Merge branch 'writeback-workqueue' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq into for-3.10/core

Tejun writes:

-----

This is the pull request for the earlier patchset[1] with the same
name.  It's only three patches (the first one was committed to
workqueue tree) but the merge strategy is a bit involved due to the
dependencies.

* Because the conversion needs features from wq/for-3.10,
  block/for-3.10/core is based on rc3, and wq/for-3.10 has conflicts
  with rc3, I pulled mainline (rc5) into wq/for-3.10 to prevent those
  workqueue conflicts from flaring up in block tree.

* Resolving the issue that Jan and Dave raised about debugging
  requires arch-wide changes.  The patchset is being worked on[2] but
  it'll have to go through -mm after these changes show up in -next,
  and not included in this pull request.

The three commits are located in the following git branch.

  git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git writeback-workqueue

Pulling it into block/for-3.10/core produces a conflict in
drivers/md/raid5.c between the following two commits.

  e3620a3ad5 ("MD RAID5: Avoid accessing gendisk or queue structs when not available")
  2f6db2a707 ("raid5: use bio_reset()")

The conflict is trivial - one removes an "if ()" conditional while the
other removes "rbi->bi_next = NULL" right above it.  We just need to
remove both.  The merged branch is available at

  git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git block-test-merge

so that you can use it for verification.  The test merge commit has
proper merge description.

While these changes are a bit of pain to route, they make code simpler
and even have, while minute, measureable performance gain[3] even on a
workload which isn't particularly favorable to showing the benefits of
this conversion.

----

Fixed up the conflict.

Conflicts:
	drivers/md/raid5.c

Signed-off-by: Jens Axboe <axboe@kernel.dk>

572 files changed, 8490 insertions, 4347 deletions

diff --git a/CREDITS b/CREDITS
index 78163cb3eb6a..afaa7cec6ea5 100644
--- a/CREDITS
+++ b/CREDITS
@@ -1510,6 +1510,14 @@ D: Natsemi ethernet
 D: Cobalt Networks (x86) support
 D: This-and-That
 
+N: Mark M. Hoffman
+E: mhoffman@lightlink.com
+D: asb100, lm93 and smsc47b397 hardware monitoring drivers
+D: hwmon subsystem core
+D: hwmon subsystem maintainer
+D: i2c-sis96x and i2c-stub SMBus drivers
+S: USA
+
 N: Dirk Hohndel
 E: hohndel@suse.de
 D: The XFree86[tm] Project
diff --git a/Documentation/hwmon/lm75 b/Documentation/hwmon/lm75
index c91a1d15fa28..69af1c7db6b7 100644
--- a/Documentation/hwmon/lm75
+++ b/Documentation/hwmon/lm75
@@ -23,7 +23,7 @@ Supported chips:
     Datasheet: Publicly available at the Maxim website
                http://www.maxim-ic.com/
   * Microchip (TelCom) TCN75
-    Prefix: 'lm75'
+    Prefix: 'tcn75'
     Addresses scanned: none
     Datasheet: Publicly available at the Microchip website
                http://www.microchip.com/
diff --git a/Documentation/i2c/busses/i2c-diolan-u2c b/Documentation/i2c/busses/i2c-diolan-u2c
index 30fe4bb9a069..0d6018c316c7 100644
--- a/Documentation/i2c/busses/i2c-diolan-u2c
+++ b/Documentation/i2c/busses/i2c-diolan-u2c
@@ -5,7 +5,7 @@ Supported adapters:
     Documentation:
         http://www.diolan.com/i2c/u2c12.html
 
-Author: Guenter Roeck <guenter.roeck@ericsson.com>
+Author: Guenter Roeck <linux@roeck-us.net>
 
 Description
 -----------
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 4609e81dbc37..c75ea0b8ec59 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -3222,6 +3222,15 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                         or other driver-specific files in the
                         Documentation/watchdog/ directory.
 
+        workqueue.disable_numa
+                        By default, all work items queued to unbound
+                        workqueues are affine to the NUMA nodes they're
+                        issued on, which results in better behavior in
+                        general.  If NUMA affinity needs to be disabled for
+                        whatever reason, this option can be used.  Note
+                        that this also can be controlled per-workqueue for
+                        workqueues visible under /sys/bus/workqueue/.
+
         x2apic_phys     [X86-64,APIC] Use x2apic physical mode instead of
                         default x2apic cluster mode on platforms
                         supporting x2apic.
diff --git a/Documentation/networking/ipvs-sysctl.txt b/Documentation/networking/ipvs-sysctl.txt
index f2a2488f1bf3..9573d0c48c6e 100644
--- a/Documentation/networking/ipvs-sysctl.txt
+++ b/Documentation/networking/ipvs-sysctl.txt
@@ -15,6 +15,13 @@ amemthresh - INTEGER
         enabled and the variable is automatically set to 2, otherwise
         the strategy is disabled and the variable is  set  to 1.
 
+backup_only - BOOLEAN
+        0 - disabled (default)
+        not 0 - enabled
+
+        If set, disable the director function while the server is
+        in backup mode to avoid packet loops for DR/TUN methods.
+
 conntrack - BOOLEAN
         0 - disabled (default)
         not 0 - enabled
diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt
index ce6581c8ca26..4499bd948860 100644
--- a/Documentation/sound/alsa/ALSA-Configuration.txt
+++ b/Documentation/sound/alsa/ALSA-Configuration.txt
@@ -912,7 +912,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
     models depending on the codec chip.  The list of available models
     is found in HD-Audio-Models.txt
 
-    The model name "genric" is treated as a special case.  When this
+    The model name "generic" is treated as a special case.  When this
     model is given, the driver uses the generic codec parser without
     "codec-patch".  It's sometimes good for testing and debugging.
 
diff --git a/Documentation/sound/alsa/seq_oss.html b/Documentation/sound/alsa/seq_oss.html
index d9776cf60c07..9663b45f6fde 100644
--- a/Documentation/sound/alsa/seq_oss.html
+++ b/Documentation/sound/alsa/seq_oss.html
@@ -285,7 +285,7 @@ sample data.
 <H4>
 7.2.4 Close Callback</H4>
 The <TT>close</TT> callback is called when this device is closed by the
-applicaion. If any private data was allocated in open callback, it must
+application. If any private data was allocated in open callback, it must
 be released in the close callback. The deletion of ALSA port should be
 done here, too. This callback must not be NULL.
 <H4>
diff --git a/MAINTAINERS b/MAINTAINERS
index 50b4d735f961..74e58a4d035b 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1338,12 +1338,6 @@ S:	Maintained
 F:      drivers/platform/x86/asus*.c
 F:      drivers/platform/x86/eeepc*.c
 
-ASUS ASB100 HARDWARE MONITOR DRIVER
-M:      "Mark M. Hoffman" <mhoffman@lightlink.com>
-L:      lm-sensors@lm-sensors.org
-S:      Maintained
-F:      drivers/hwmon/asb100.c
-
 ASYNCHRONOUS TRANSFERS/TRANSFORMS (IOAT) API
 M:      Dan Williams <djbw@fb.com>
 W:      http://sourceforge.net/projects/xscaleiop
@@ -1467,6 +1461,12 @@ F:	drivers/dma/at_hdmac.c
 F:      drivers/dma/at_hdmac_regs.h
 F:      include/linux/platform_data/dma-atmel.h
 
+ATMEL I2C DRIVER
+M:      Ludovic Desroches <ludovic.desroches@atmel.com>
+L:      linux-i2c@vger.kernel.org
+S:      Supported
+F:      drivers/i2c/busses/i2c-at91.c
+
 ATMEL ISI DRIVER
 M:      Josh Wu <josh.wu@atmel.com>
 L:      linux-media@vger.kernel.org
@@ -2629,7 +2629,7 @@ F:	include/uapi/drm/
 
 INTEL DRM DRIVERS (excluding Poulsbo, Moorestown and derivative chipsets)
 M:      Daniel Vetter <daniel.vetter@ffwll.ch>
-L:      intel-gfx@lists.freedesktop.org (subscribers-only)
+L:      intel-gfx@lists.freedesktop.org
 L:      dri-devel@lists.freedesktop.org
 T:      git git://people.freedesktop.org/~danvet/drm-intel
 S:      Supported
@@ -3242,6 +3242,12 @@ F:	Documentation/firmware_class/
 F:      drivers/base/firmware*.c
 F:      include/linux/firmware.h
 
+FLASHSYSTEM DRIVER (IBM FlashSystem 70/80 PCI SSD Flash Card)
+M:      Joshua Morris <josh.h.morris@us.ibm.com>
+M:      Philip Kelleher <pjk1939@linux.vnet.ibm.com>
+S:      Maintained
+F:      drivers/block/rsxx/
+
 FLOPPY DRIVER
 M:      Jiri Kosina <jkosina@suse.cz>
 T:      git git://git.kernel.org/pub/scm/linux/kernel/git/jikos/floppy.git
@@ -3851,7 +3857,7 @@ F:	drivers/i2c/busses/i2c-ismt.c
 F:      Documentation/i2c/busses/i2c-ismt
 
 I2C/SMBUS STUB DRIVER
-M:      "Mark M. Hoffman" <mhoffman@lightlink.com>
+M:      Jean Delvare <khali@linux-fr.org>
 L:      linux-i2c@vger.kernel.org
 S:      Maintained
 F:      drivers/i2c/i2c-stub.c
@@ -5647,6 +5653,14 @@ S:	Maintained
 F:      drivers/video/riva/
 F:      drivers/video/nvidia/
 
+NVM EXPRESS DRIVER
+M:      Matthew Wilcox <willy@linux.intel.com>
+L:      linux-nvme@lists.infradead.org
+T:      git git://git.infradead.org/users/willy/linux-nvme.git
+S:      Supported
+F:      drivers/block/nvme.c
+F:      include/linux/nvme.h
+
 OMAP SUPPORT
 M:      Tony Lindgren <tony@atomide.com>
 L:      linux-omap@vger.kernel.org
@@ -5675,7 +5689,7 @@ S:	Maintained
 F:      arch/arm/*omap*/*clock*
 
 OMAP POWER MANAGEMENT SUPPORT
-M:      Kevin Hilman <khilman@ti.com>
+M:      Kevin Hilman <khilman@deeprootsystems.com>
 L:      linux-omap@vger.kernel.org
 S:      Maintained
 F:      arch/arm/*omap*/*pm*
@@ -5769,7 +5783,7 @@ F:	arch/arm/*omap*/usb*
 
 OMAP GPIO DRIVER
 M:      Santosh Shilimkar <santosh.shilimkar@ti.com>
-M:      Kevin Hilman <khilman@ti.com>
+M:      Kevin Hilman <khilman@deeprootsystems.com>
 L:      linux-omap@vger.kernel.org
 S:      Maintained
 F:      drivers/gpio/gpio-omap.c
@@ -6201,7 +6215,7 @@ F:	include/linux/power_supply.h
 F:      drivers/power/
 
 PNP SUPPORT
-M:      Adam Belay <abelay@mit.edu>
+M:      Rafael J. Wysocki <rafael.j.wysocki@intel.com>
 M:      Bjorn Helgaas <bhelgaas@google.com>
 S:      Maintained
 F:      drivers/pnp/
@@ -6543,12 +6557,6 @@ S:	Maintained
 F:      Documentation/blockdev/ramdisk.txt
 F:      drivers/block/brd.c
 
-RAMSAM DRIVER (IBM RamSan 70/80 PCI SSD Flash Card)
-M:      Joshua Morris <josh.h.morris@us.ibm.com>
-M:      Philip Kelleher <pjk1939@linux.vnet.ibm.com>
-S:      Maintained
-F:      drivers/block/rsxx/
-
 RANDOM NUMBER DRIVER
 M:      Theodore Ts'o" <tytso@mit.edu>
 S:      Maintained
@@ -7165,7 +7173,7 @@ F:	arch/arm/mach-s3c2410/bast-irq.c
 
 TI DAVINCI MACHINE SUPPORT
 M:      Sekhar Nori <nsekhar@ti.com>
-M:      Kevin Hilman <khilman@ti.com>
+M:      Kevin Hilman <khilman@deeprootsystems.com>
 L:      davinci-linux-open-source@linux.davincidsp.com (moderated for non-subscribers)
 T:      git git://gitorious.org/linux-davinci/linux-davinci.git
 Q:      http://patchwork.kernel.org/project/linux-davinci/list/
@@ -7198,13 +7206,6 @@ L:	netdev@vger.kernel.org
 S:      Maintained
 F:      drivers/net/ethernet/sis/sis900.*
 
-SIS 96X I2C/SMBUS DRIVER
-M:      "Mark M. Hoffman" <mhoffman@lightlink.com>
-L:      linux-i2c@vger.kernel.org
-S:      Maintained
-F:      Documentation/i2c/busses/i2c-sis96x
-F:      drivers/i2c/busses/i2c-sis96x.c
-
 SIS FRAMEBUFFER DRIVER
 M:      Thomas Winischhofer <thomas@winischhofer.net>
 W:      http://www.winischhofer.net/linuxsisvga.shtml
@@ -7282,7 +7283,7 @@ F:	Documentation/hwmon/sch5627
 F:      drivers/hwmon/sch5627.c
 
 SMSC47B397 HARDWARE MONITOR DRIVER
-M:      "Mark M. Hoffman" <mhoffman@lightlink.com>
+M:      Jean Delvare <khali@linux-fr.org>
 L:      lm-sensors@lm-sensors.org
 S:      Maintained
 F:      Documentation/hwmon/smsc47b397
@@ -7705,9 +7706,10 @@ F:	include/linux/swiotlb.h
 
 SYNOPSYS ARC ARCHITECTURE
 M:      Vineet Gupta <vgupta@synopsys.com>
-L:      linux-snps-arc@vger.kernel.org
 S:      Supported
 F:      arch/arc/
+F:      Documentation/devicetree/bindings/arc/
+F:      drivers/tty/serial/arc-uart.c
 
 SYSV FILESYSTEM
 M:      Christoph Hellwig <hch@infradead.org>
diff --git a/Makefile b/Makefile
index 22113a77f8ed..58a165b02af1 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 VERSION = 3
 PATCHLEVEL = 9
 SUBLEVEL = 0
-EXTRAVERSION = -rc3
+EXTRAVERSION = -rc5
 NAME = Unicycling Gorilla
 
 # *DOCUMENTATION*
diff --git a/arch/arc/include/asm/dma-mapping.h b/arch/arc/include/asm/dma-mapping.h
index 31f77aec0823..45b8e0cea176 100644
--- a/arch/arc/include/asm/dma-mapping.h
+++ b/arch/arc/include/asm/dma-mapping.h
@@ -126,7 +126,7 @@ dma_map_sg(struct device *dev, struct scatterlist *sg,
         int i;
 
         for_each_sg(sg, s, nents, i)
-                sg->dma_address = dma_map_page(dev, sg_page(s), s->offset,
+                s->dma_address = dma_map_page(dev, sg_page(s), s->offset,
                                                s->length, dir);
 
         return nents;
diff --git a/arch/arc/include/asm/elf.h b/arch/arc/include/asm/elf.h
index f4c8d36ebecb..a26282857683 100644
--- a/arch/arc/include/asm/elf.h
+++ b/arch/arc/include/asm/elf.h
@@ -72,7 +72,4 @@ extern int elf_check_arch(const struct elf32_hdr *);
  */
 #define ELF_PLATFORM    (NULL)
 
-#define SET_PERSONALITY(ex) \
-        set_personality(PER_LINUX | (current->personality & (~PER_MASK)))
-
 #endif
diff --git a/arch/arc/include/asm/entry.h b/arch/arc/include/asm/entry.h
index 23daa326fc9b..eb2ae53187d9 100644
--- a/arch/arc/include/asm/entry.h
+++ b/arch/arc/include/asm/entry.h
@@ -415,7 +415,7 @@
  *-------------------------------------------------------------*/
 .macro SAVE_ALL_EXCEPTION   marker
 
-        st      \marker, [sp, 8]
+        st      \marker, [sp, 8]        /* orig_r8 */
         st      r0, [sp, 4]    /* orig_r0, needed only for sys calls */
 
         /* Restore r9 used to code the early prologue */
diff --git a/arch/arc/include/asm/kgdb.h b/arch/arc/include/asm/kgdb.h
index f3c4934f0ca9..4930957ca3d3 100644
--- a/arch/arc/include/asm/kgdb.h
+++ b/arch/arc/include/asm/kgdb.h
@@ -13,7 +13,7 @@
 
 #ifdef CONFIG_KGDB
 
-#include <asm/user.h>
+#include <asm/ptrace.h>
 
 /* to ensure compatibility with Linux 2.6.35, we don't implement the get/set
  * register API yet */
@@ -53,9 +53,7 @@ enum arc700_linux_regnums {
 };
 
 #else
-static inline void kgdb_trap(struct pt_regs *regs, int param)
-{
-}
+#define kgdb_trap(regs, param)
 #endif
 
 #endif  /* __ARC_KGDB_H__ */
diff --git a/arch/arc/include/asm/ptrace.h b/arch/arc/include/asm/ptrace.h
index 8ae783d20a81..6179de7e07c2 100644
--- a/arch/arc/include/asm/ptrace.h
+++ b/arch/arc/include/asm/ptrace.h
@@ -123,7 +123,7 @@ static inline long regs_return_value(struct pt_regs *regs)
 #define orig_r8_IS_SCALL                0x0001
 #define orig_r8_IS_SCALL_RESTARTED      0x0002
 #define orig_r8_IS_BRKPT                0x0004
-#define orig_r8_IS_EXCPN                0x0004
+#define orig_r8_IS_EXCPN                0x0008
 #define orig_r8_IS_IRQ1                 0x0010
 #define orig_r8_IS_IRQ2                 0x0020
 
diff --git a/arch/arc/include/asm/syscalls.h b/arch/arc/include/asm/syscalls.h
index e53a5340ba4f..dd785befe7fd 100644
--- a/arch/arc/include/asm/syscalls.h
+++ b/arch/arc/include/asm/syscalls.h
@@ -16,8 +16,6 @@
 #include <linux/types.h>
 
 int sys_clone_wrapper(int, int, int, int, int);
-int sys_fork_wrapper(void);
-int sys_vfork_wrapper(void);
 int sys_cacheflush(uint32_t, uint32_t uint32_t);
 int sys_arc_settls(void *);
 int sys_arc_gettls(void);
diff --git a/arch/arc/include/uapi/asm/ptrace.h b/arch/arc/include/uapi/asm/ptrace.h
index 6afa4f702075..30333cec0fef 100644
--- a/arch/arc/include/uapi/asm/ptrace.h
+++ b/arch/arc/include/uapi/asm/ptrace.h
@@ -28,14 +28,14 @@
 */
 struct user_regs_struct {
 
-        struct scratch {
+        struct {
                 long pad;
                 long bta, lp_start, lp_end, lp_count;
                 long status32, ret, blink, fp, gp;
                 long r12, r11, r10, r9, r8, r7, r6, r5, r4, r3, r2, r1, r0;
                 long sp;
         } scratch;
-        struct callee {
+        struct {
                 long pad;
                 long r25, r24, r23, r22, r21, r20;
                 long r19, r18, r17, r16, r15, r14, r13;
diff --git a/arch/arc/kernel/entry.S b/arch/arc/kernel/entry.S
index ef6800ba2f03..91eeab81f52d 100644
--- a/arch/arc/kernel/entry.S
+++ b/arch/arc/kernel/entry.S
@@ -452,7 +452,7 @@ tracesys:
         ; using ERET won't work since next-PC has already committed
         lr  r12, [efa]
         GET_CURR_TASK_FIELD_PTR   TASK_THREAD, r11
-        st  r12, [r11, THREAD_FAULT_ADDR]
+        st  r12, [r11, THREAD_FAULT_ADDR]       ; thread.fault_address
 
         ; PRE Sys Call Ptrace hook
         mov r0, sp                      ; pt_regs needed
@@ -792,31 +792,6 @@ ARC_EXIT ret_from_fork
 
 ;################### Special Sys Call Wrappers ##########################
 
-; TBD: call do_fork directly from here
-ARC_ENTRY sys_fork_wrapper
-        SAVE_CALLEE_SAVED_USER
-        bl  @sys_fork
-        DISCARD_CALLEE_SAVED_USER
-
-        GET_CURR_THR_INFO_FLAGS   r10
-        btst r10, TIF_SYSCALL_TRACE
-        bnz  tracesys_exit
-
-        b ret_from_system_call
-ARC_EXIT sys_fork_wrapper
-
-ARC_ENTRY sys_vfork_wrapper
-        SAVE_CALLEE_SAVED_USER
-        bl  @sys_vfork
-        DISCARD_CALLEE_SAVED_USER
-
-        GET_CURR_THR_INFO_FLAGS   r10
-        btst r10, TIF_SYSCALL_TRACE
-        bnz  tracesys_exit
-
-        b ret_from_system_call
-ARC_EXIT sys_vfork_wrapper
-
 ARC_ENTRY sys_clone_wrapper
         SAVE_CALLEE_SAVED_USER
         bl  @sys_clone
diff --git a/arch/arc/kernel/kgdb.c b/arch/arc/kernel/kgdb.c
index 2888ba5be47e..52bdc83c1495 100644
--- a/arch/arc/kernel/kgdb.c
+++ b/arch/arc/kernel/kgdb.c
@@ -9,6 +9,7 @@
  */
 
 #include <linux/kgdb.h>
+#include <linux/sched.h>
 #include <asm/disasm.h>
 #include <asm/cacheflush.h>
 
diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c
index dc0f968dae0a..2d95ac07df7b 100644
--- a/arch/arc/kernel/setup.c
+++ b/arch/arc/kernel/setup.c
@@ -232,10 +232,8 @@ char *arc_extn_mumbojumbo(int cpu_id, char *buf, int len)
 
         n += scnprintf(buf + n, len - n, "\n");
 
-#ifdef _ASM_GENERIC_UNISTD_H
         n += scnprintf(buf + n, len - n,
-                       "OS ABI [v2]\t: asm-generic/{unistd,stat,fcntl}\n");
-#endif
+                       "OS ABI [v3]\t: no-legacy-syscalls\n");
 
         return buf;
 }
diff --git a/arch/arc/kernel/sys.c b/arch/arc/kernel/sys.c
index f6bdd07583f3..9d6c1ca26af6 100644
--- a/arch/arc/kernel/sys.c
+++ b/arch/arc/kernel/sys.c
@@ -6,8 +6,6 @@
 #include <asm/syscalls.h>
 
 #define sys_clone       sys_clone_wrapper
-#define sys_fork        sys_fork_wrapper
-#define sys_vfork       sys_vfork_wrapper
 
 #undef __SYSCALL
 #define __SYSCALL(nr, call) [nr] = (call),
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 2c3bdce15134..13b739469c51 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -49,7 +49,6 @@ config ARM
         select HAVE_REGS_AND_STACK_ACCESS_API
         select HAVE_SYSCALL_TRACEPOINTS
         select HAVE_UID16
-        select VIRT_TO_BUS
         select KTIME_SCALAR
         select PERF_USE_VMALLOC
         select RTC_LIB
@@ -743,6 +742,7 @@ config ARCH_RPC
         select NEED_MACH_IO_H
         select NEED_MACH_MEMORY_H
         select NO_IOPORT
+        select VIRT_TO_BUS
         help
           On the Acorn Risc-PC, Linux can support the internal IDE disk and
           CD-ROM interface, serial and parallel port, and the floppy drive.
@@ -878,6 +878,7 @@ config ARCH_SHARK
         select ISA_DMA
         select NEED_MACH_MEMORY_H
         select PCI
+        select VIRT_TO_BUS
         select ZONE_DMA
         help
           Support for the StrongARM based Digital DNARD machine, also known
@@ -1005,12 +1006,12 @@ config ARCH_MULTI_V4_V5
         bool
 
 config ARCH_MULTI_V6
-        bool "ARMv6 based platforms (ARM11, Scorpion, ...)"
+        bool "ARMv6 based platforms (ARM11)"
         select ARCH_MULTI_V6_V7
         select CPU_V6
 
 config ARCH_MULTI_V7
-        bool "ARMv7 based platforms (Cortex-A, PJ4, Krait)"
+        bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)"
         default y
         select ARCH_MULTI_V6_V7
         select ARCH_VEXPRESS
@@ -1461,10 +1462,6 @@ config ISA_DMA
         bool
         select ISA_DMA_API
 
-config ARCH_NO_VIRT_TO_BUS
-        def_bool y
-        depends on !ARCH_RPC && !ARCH_NETWINDER && !ARCH_SHARK
-
 # Select ISA DMA interface
 config ISA_DMA_API
         bool
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index ecfcdba2d17c..9b31f4311ea2 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -495,6 +495,7 @@ config DEBUG_IMX_UART_PORT
                                                 DEBUG_IMX53_UART || \
                                                 DEBUG_IMX6Q_UART
         default 1
+        depends on ARCH_MXC
         help
           Choose UART port on which kernel low-level debug messages
           should be output.
diff --git a/arch/arm/boot/dts/at91sam9x5.dtsi b/arch/arm/boot/dts/at91sam9x5.dtsi
index aa98e641931f..a98c0d50fbbe 100644
--- a/arch/arm/boot/dts/at91sam9x5.dtsi
+++ b/arch/arm/boot/dts/at91sam9x5.dtsi
@@ -238,8 +238,32 @@
                                 nand {
                                         pinctrl_nand: nand-0 {
                                                 atmel,pins =
-                                                        <3 4 0x0 0x1    /* PD5 gpio RDY pin pull_up */
-                                                         3 5 0x0 0x1>;  /* PD4 gpio enable pin pull_up */
+                                                        <3 0 0x1 0x0    /* PD0 periph A Read Enable */
+                                                         3 1 0x1 0x0    /* PD1 periph A Write Enable */
+                                                         3 2 0x1 0x0    /* PD2 periph A Address Latch Enable */
+                                                         3 3 0x1 0x0    /* PD3 periph A Command Latch Enable */
+                                                         3 4 0x0 0x1    /* PD4 gpio Chip Enable pin pull_up */
+                                                         3 5 0x0 0x1    /* PD5 gpio RDY/BUSY pin pull_up */
+                                                         3 6 0x1 0x0    /* PD6 periph A Data bit 0 */
+                                                         3 7 0x1 0x0    /* PD7 periph A Data bit 1 */
+                                                         3 8 0x1 0x0    /* PD8 periph A Data bit 2 */
+                                                         3 9 0x1 0x0    /* PD9 periph A Data bit 3 */
+                                                         3 10 0x1 0x0   /* PD10 periph A Data bit 4 */
+                                                         3 11 0x1 0x0   /* PD11 periph A Data bit 5 */
+                                                         3 12 0x1 0x0   /* PD12 periph A Data bit 6 */
+                                                         3 13 0x1 0x0>; /* PD13 periph A Data bit 7 */
+                                        };
+
+                                        pinctrl_nand_16bits: nand_16bits-0 {
+                                                atmel,pins =
+                                                        <3 14 0x1 0x0   /* PD14 periph A Data bit 8 */
+                                                         3 15 0x1 0x0   /* PD15 periph A Data bit 9 */
+                                                         3 16 0x1 0x0   /* PD16 periph A Data bit 10 */
+                                                         3 17 0x1 0x0   /* PD17 periph A Data bit 11 */
+                                                         3 18 0x1 0x0   /* PD18 periph A Data bit 12 */
+                                                         3 19 0x1 0x0   /* PD19 periph A Data bit 13 */
+                                                         3 20 0x1 0x0   /* PD20 periph A Data bit 14 */
+                                                         3 21 0x1 0x0>; /* PD21 periph A Data bit 15 */
                                         };
                                 };
 
diff --git a/arch/arm/boot/dts/exynos4.dtsi b/arch/arm/boot/dts/exynos4.dtsi
index e1347fceb5bc..1a62bcf18aa3 100644
--- a/arch/arm/boot/dts/exynos4.dtsi
+++ b/arch/arm/boot/dts/exynos4.dtsi
@@ -275,18 +275,27 @@
                         compatible = "arm,pl330", "arm,primecell";
                         reg = <0x12680000 0x1000>;
                         interrupts = <0 35 0>;
+                        #dma-cells = <1>;
+                        #dma-channels = <8>;
+                        #dma-requests = <32>;
                 };
 
                 pdma1: pdma@12690000 {
                         compatible = "arm,pl330", "arm,primecell";
                         reg = <0x12690000 0x1000>;
                         interrupts = <0 36 0>;
+                        #dma-cells = <1>;
+                        #dma-channels = <8>;
+                        #dma-requests = <32>;
                 };
 
                 mdma1: mdma@12850000 {
                         compatible = "arm,pl330", "arm,primecell";
                         reg = <0x12850000 0x1000>;
                         interrupts = <0 34 0>;
+                        #dma-cells = <1>;
+                        #dma-channels = <8>;
+                        #dma-requests = <1>;
                 };
         };
 };
diff --git a/arch/arm/boot/dts/exynos5440.dtsi b/arch/arm/boot/dts/exynos5440.dtsi
index 5f3562ad6746..9a99755920c0 100644
--- a/arch/arm/boot/dts/exynos5440.dtsi
+++ b/arch/arm/boot/dts/exynos5440.dtsi
@@ -142,12 +142,18 @@
                         compatible = "arm,pl330", "arm,primecell";
                         reg = <0x120000 0x1000>;
                         interrupts = <0 34 0>;
+                        #dma-cells = <1>;
+                        #dma-channels = <8>;
+                        #dma-requests = <32>;
                 };
 
                 pdma1: pdma@121B0000 {
                         compatible = "arm,pl330", "arm,primecell";
                         reg = <0x121000 0x1000>;
                         interrupts = <0 35 0>;
+                        #dma-cells = <1>;
+                        #dma-channels = <8>;
+                        #dma-requests = <32>;
                 };
         };
 
diff --git a/arch/arm/boot/dts/tegra20.dtsi b/arch/arm/boot/dts/tegra20.dtsi
index 48d00a099ce3..3d3f64d2111a 100644
--- a/arch/arm/boot/dts/tegra20.dtsi
+++ b/arch/arm/boot/dts/tegra20.dtsi
@@ -385,7 +385,7 @@
 
         spi@7000d800 {
                 compatible = "nvidia,tegra20-slink";
-                reg = <0x7000d480 0x200>;
+                reg = <0x7000d800 0x200>;
                 interrupts = <0 83 0x04>;
                 nvidia,dma-request-selector = <&apbdma 17>;
                 #address-cells = <1>;
diff --git a/arch/arm/boot/dts/tegra30.dtsi b/arch/arm/boot/dts/tegra30.dtsi
index 9d87a3ffe998..dbf46c272562 100644
--- a/arch/arm/boot/dts/tegra30.dtsi
+++ b/arch/arm/boot/dts/tegra30.dtsi
@@ -372,7 +372,7 @@
 
         spi@7000d800 {
                 compatible = "nvidia,tegra30-slink", "nvidia,tegra20-slink";
-                reg = <0x7000d480 0x200>;
+                reg = <0x7000d800 0x200>;
                 interrupts = <0 83 0x04>;
                 nvidia,dma-request-selector = <&apbdma 17>;
                 #address-cells = <1>;
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 31644f1978d5..79078edbb9bc 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -480,7 +480,7 @@ static void __cpuinit broadcast_timer_setup(struct clock_event_device *evt)
         evt->features   = CLOCK_EVT_FEAT_ONESHOT |
                           CLOCK_EVT_FEAT_PERIODIC |
                           CLOCK_EVT_FEAT_DUMMY;
-        evt->rating     = 400;
+        evt->rating     = 100;
         evt->mult       = 1;
         evt->set_mode   = broadcast_timer_set_mode;
 
diff --git a/arch/arm/lib/memset.S b/arch/arm/lib/memset.S
index d912e7397ecc..94b0650ea98f 100644
--- a/arch/arm/lib/memset.S
+++ b/arch/arm/lib/memset.S
@@ -14,31 +14,15 @@
 
         .text
         .align  5
-        .word   0
-
-1:      subs    r2, r2, #4              @ 1 do we have enough
-        blt     5f                      @ 1 bytes to align with?
-        cmp     r3, #2                  @ 1
-        strltb  r1, [ip], #1            @ 1
-        strleb  r1, [ip], #1            @ 1
-        strb    r1, [ip], #1            @ 1
-        add     r2, r2, r3              @ 1 (r2 = r2 - (4 - r3))
-/*
- * The pointer is now aligned and the length is adjusted.  Try doing the
- * memset again.
- */
 
 ENTRY(memset)
-/*
- * Preserve the contents of r0 for the return value.
- */
-        mov     ip, r0
-        ands    r3, ip, #3              @ 1 unaligned?
-        bne     1b                      @ 1
+        ands    r3, r0, #3              @ 1 unaligned?
+        mov     ip, r0                  @ preserve r0 as return value
+        bne     6f                      @ 1
 /*
  * we know that the pointer in ip is aligned to a word boundary.
  */
-        orr     r1, r1, r1, lsl #8
+1:      orr     r1, r1, r1, lsl #8
         orr     r1, r1, r1, lsl #16
         mov     r3, r1
         cmp     r2, #16
@@ -127,4 +111,13 @@ ENTRY(memset)
         tst     r2, #1
         strneb  r1, [ip], #1
         mov     pc, lr
+
+6:      subs    r2, r2, #4              @ 1 do we have enough
+        blt     5b                      @ 1 bytes to align with?
+        cmp     r3, #2                  @ 1
+        strltb  r1, [ip], #1            @ 1
+        strleb  r1, [ip], #1            @ 1
+        strb    r1, [ip], #1            @ 1
+        add     r2, r2, r3              @ 1 (r2 = r2 - (4 - r3))
+        b       1b
 ENDPROC(memset)
diff --git a/arch/arm/mach-at91/include/mach/gpio.h b/arch/arm/mach-at91/include/mach/gpio.h
index eed465ab0dd7..5fc23771c154 100644
--- a/arch/arm/mach-at91/include/mach/gpio.h
+++ b/arch/arm/mach-at91/include/mach/gpio.h
@@ -209,6 +209,14 @@ extern int at91_get_gpio_value(unsigned pin);
 extern void at91_gpio_suspend(void);
 extern void at91_gpio_resume(void);
 
+#ifdef CONFIG_PINCTRL_AT91
+extern void at91_pinctrl_gpio_suspend(void);
+extern void at91_pinctrl_gpio_resume(void);
+#else
+static inline void at91_pinctrl_gpio_suspend(void) {}
+static inline void at91_pinctrl_gpio_resume(void) {}
+#endif
+
 #endif  /* __ASSEMBLY__ */
 
 #endif
diff --git a/arch/arm/mach-at91/irq.c b/arch/arm/mach-at91/irq.c
index 8e210262aeee..e0ca59171022 100644
--- a/arch/arm/mach-at91/irq.c
+++ b/arch/arm/mach-at91/irq.c
@@ -92,23 +92,21 @@ static int at91_aic_set_wake(struct irq_data *d, unsigned value)
 
 void at91_irq_suspend(void)
 {
-        int i = 0, bit;
+        int bit = -1;
 
         if (has_aic5()) {
                 /* disable enabled irqs */
-                while ((bit = find_next_bit(backups, n_irqs, i)) < n_irqs) {
+                while ((bit = find_next_bit(backups, n_irqs, bit + 1)) < n_irqs) {
                         at91_aic_write(AT91_AIC5_SSR,
                                        bit & AT91_AIC5_INTSEL_MSK);
                         at91_aic_write(AT91_AIC5_IDCR, 1);
-                        i = bit;
                 }
                 /* enable wakeup irqs */
-                i = 0;
-                while ((bit = find_next_bit(wakeups, n_irqs, i)) < n_irqs) {
+                bit = -1;
+                while ((bit = find_next_bit(wakeups, n_irqs, bit + 1)) < n_irqs) {
                         at91_aic_write(AT91_AIC5_SSR,
                                        bit & AT91_AIC5_INTSEL_MSK);
                         at91_aic_write(AT91_AIC5_IECR, 1);
-                        i = bit;
                 }
         } else {
                 at91_aic_write(AT91_AIC_IDCR, *backups);
@@ -118,23 +116,21 @@ void at91_irq_suspend(void)
 
 void at91_irq_resume(void)
 {
-        int i = 0, bit;
+        int bit = -1;
 
         if (has_aic5()) {
                 /* disable wakeup irqs */
-                while ((bit = find_next_bit(wakeups, n_irqs, i)) < n_irqs) {
+                while ((bit = find_next_bit(wakeups, n_irqs, bit + 1)) < n_irqs) {
                         at91_aic_write(AT91_AIC5_SSR,
                                        bit & AT91_AIC5_INTSEL_MSK);
                         at91_aic_write(AT91_AIC5_IDCR, 1);
-                        i = bit;
                 }
                 /* enable irqs disabled for suspend */
-                i = 0;
-                while ((bit = find_next_bit(backups, n_irqs, i)) < n_irqs) {
+                bit = -1;
+                while ((bit = find_next_bit(backups, n_irqs, bit + 1)) < n_irqs) {
                         at91_aic_write(AT91_AIC5_SSR,
                                        bit & AT91_AIC5_INTSEL_MSK);
                         at91_aic_write(AT91_AIC5_IECR, 1);
-                        i = bit;
                 }
         } else {
                 at91_aic_write(AT91_AIC_IDCR, *wakeups);
diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c
index adb6db888a1f..73f1f250403a 100644
--- a/arch/arm/mach-at91/pm.c
+++ b/arch/arm/mach-at91/pm.c
@@ -201,7 +201,10 @@ extern u32 at91_slow_clock_sz;
 
 static int at91_pm_enter(suspend_state_t state)
 {
-        at91_gpio_suspend();
+        if (of_have_populated_dt())
+                at91_pinctrl_gpio_suspend();
+        else
+                at91_gpio_suspend();
         at91_irq_suspend();
 
         pr_debug("AT91: PM - wake mask %08x, pm state %d\n",
@@ -286,7 +289,10 @@ static int at91_pm_enter(suspend_state_t state)
 error:
         target_state = PM_SUSPEND_ON;
         at91_irq_resume();
-        at91_gpio_resume();
+        if (of_have_populated_dt())
+                at91_pinctrl_gpio_resume();
+        else
+                at91_gpio_resume();
         return 0;
 }
 
diff --git a/arch/arm/mach-davinci/dma.c b/arch/arm/mach-davinci/dma.c
index a685e9706b7b..45b7c71d9cc1 100644
--- a/arch/arm/mach-davinci/dma.c
+++ b/arch/arm/mach-davinci/dma.c
@@ -743,6 +743,9 @@ EXPORT_SYMBOL(edma_free_channel);
  */
 int edma_alloc_slot(unsigned ctlr, int slot)
 {
+        if (!edma_cc[ctlr])
+                return -EINVAL;
+
         if (slot >= 0)
                 slot = EDMA_CHAN_SLOT(slot);
 
diff --git a/arch/arm/mach-footbridge/Kconfig b/arch/arm/mach-footbridge/Kconfig
index abda5a18a664..0f2111a11315 100644
--- a/arch/arm/mach-footbridge/Kconfig
+++ b/arch/arm/mach-footbridge/Kconfig
@@ -67,6 +67,7 @@ config ARCH_NETWINDER
         select ISA
         select ISA_DMA
         select PCI
+        select VIRT_TO_BUS
         help
           Say Y here if you intend to run this kernel on the Rebel.COM
           NetWinder.  Information about this machine can be found at:
diff --git a/arch/arm/mach-imx/clk-imx35.c b/arch/arm/mach-imx/clk-imx35.c
index 74e3a34d78b8..e13a8fa5e62c 100644
--- a/arch/arm/mach-imx/clk-imx35.c
+++ b/arch/arm/mach-imx/clk-imx35.c
@@ -264,6 +264,7 @@ int __init mx35_clocks_init(void)
         clk_prepare_enable(clk[gpio3_gate]);
         clk_prepare_enable(clk[iim_gate]);
         clk_prepare_enable(clk[emi_gate]);
+        clk_prepare_enable(clk[max_gate]);
 
         /*
          * SCC is needed to boot via mmc after a watchdog reset. The clock code
diff --git a/arch/arm/mach-imx/imx25-dt.c b/arch/arm/mach-imx/imx25-dt.c
index 03b65e5ea541..82348391582a 100644
--- a/arch/arm/mach-imx/imx25-dt.c
+++ b/arch/arm/mach-imx/imx25-dt.c
@@ -27,6 +27,11 @@ static const char * const imx25_dt_board_compat[] __initconst = {
         NULL
 };
 
+static void __init imx25_timer_init(void)
+{
+        mx25_clocks_init_dt();
+}
+
 DT_MACHINE_START(IMX25_DT, "Freescale i.MX25 (Device Tree Support)")
         .map_io         = mx25_map_io,
         .init_early     = imx25_init_early,
diff --git a/arch/arm/mach-mmp/gplugd.c b/arch/arm/mach-mmp/gplugd.c
index d1e2d595e79c..f62b68d926f4 100644
--- a/arch/arm/mach-mmp/gplugd.c
+++ b/arch/arm/mach-mmp/gplugd.c
@@ -9,6 +9,7 @@
  */
 
 #include <linux/init.h>
+#include <linux/platform_device.h>
 #include <linux/gpio.h>
 
 #include <asm/mach/arch.h>
diff --git a/arch/arm/mach-mxs/mach-mxs.c b/arch/arm/mach-mxs/mach-mxs.c
index 3218f1f2c0e0..e7b781d3788f 100644
--- a/arch/arm/mach-mxs/mach-mxs.c
+++ b/arch/arm/mach-mxs/mach-mxs.c
@@ -41,8 +41,6 @@ static struct fb_videomode mx23evk_video_modes[] = {
                 .lower_margin   = 4,
                 .hsync_len      = 1,
                 .vsync_len      = 1,
-                .sync           = FB_SYNC_DATA_ENABLE_HIGH_ACT |
-                                  FB_SYNC_DOTCLK_FAILING_ACT,
         },
 };
 
@@ -59,8 +57,6 @@ static struct fb_videomode mx28evk_video_modes[] = {
                 .lower_margin   = 10,
                 .hsync_len      = 10,
                 .vsync_len      = 10,
-                .sync           = FB_SYNC_DATA_ENABLE_HIGH_ACT |
-                                  FB_SYNC_DOTCLK_FAILING_ACT,
         },
 };
 
@@ -77,7 +73,6 @@ static struct fb_videomode m28evk_video_modes[] = {
                 .lower_margin   = 45,
                 .hsync_len      = 1,
                 .vsync_len      = 1,
-                .sync           = FB_SYNC_DATA_ENABLE_HIGH_ACT,
         },
 };
 
@@ -94,9 +89,7 @@ static struct fb_videomode apx4devkit_video_modes[] = {
                 .lower_margin   = 13,
                 .hsync_len      = 48,
                 .vsync_len      = 3,
-                .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT |
-                                  FB_SYNC_DATA_ENABLE_HIGH_ACT |
-                                  FB_SYNC_DOTCLK_FAILING_ACT,
+                .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
         },
 };
 
@@ -113,9 +106,7 @@ static struct fb_videomode apf28dev_video_modes[] = {
                 .lower_margin = 0x15,
                 .hsync_len = 64,
                 .vsync_len = 4,
-                .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT |
-                                FB_SYNC_DATA_ENABLE_HIGH_ACT |
-                                FB_SYNC_DOTCLK_FAILING_ACT,
+                .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
         },
 };
 
@@ -132,7 +123,6 @@ static struct fb_videomode cfa10049_video_modes[] = {
                 .lower_margin   = 2,
                 .hsync_len      = 15,
                 .vsync_len      = 15,
-                .sync           = FB_SYNC_DATA_ENABLE_HIGH_ACT
         },
 };
 
@@ -259,6 +249,8 @@ static void __init imx23_evk_init(void)
         mxsfb_pdata.mode_count = ARRAY_SIZE(mx23evk_video_modes);
         mxsfb_pdata.default_bpp = 32;
         mxsfb_pdata.ld_intf_width = STMLCDIF_24BIT;
+        mxsfb_pdata.sync = MXSFB_SYNC_DATA_ENABLE_HIGH_ACT |
+                                MXSFB_SYNC_DOTCLK_FAILING_ACT;
 }
 
 static inline void enable_clk_enet_out(void)
@@ -278,6 +270,8 @@ static void __init imx28_evk_init(void)
         mxsfb_pdata.mode_count = ARRAY_SIZE(mx28evk_video_modes);
         mxsfb_pdata.default_bpp = 32;
         mxsfb_pdata.ld_intf_width = STMLCDIF_24BIT;
+        mxsfb_pdata.sync = MXSFB_SYNC_DATA_ENABLE_HIGH_ACT |
+                                MXSFB_SYNC_DOTCLK_FAILING_ACT;
 
         mxs_saif_clkmux_select(MXS_DIGCTL_SAIF_CLKMUX_EXTMSTR0);
 }
@@ -297,6 +291,7 @@ static void __init m28evk_init(void)
         mxsfb_pdata.mode_count = ARRAY_SIZE(m28evk_video_modes);
         mxsfb_pdata.default_bpp = 16;
         mxsfb_pdata.ld_intf_width = STMLCDIF_18BIT;
+        mxsfb_pdata.sync = MXSFB_SYNC_DATA_ENABLE_HIGH_ACT;
 }
 
 static void __init sc_sps1_init(void)
@@ -322,6 +317,8 @@ static void __init apx4devkit_init(void)
         mxsfb_pdata.mode_count = ARRAY_SIZE(apx4devkit_video_modes);
         mxsfb_pdata.default_bpp = 32;
         mxsfb_pdata.ld_intf_width = STMLCDIF_24BIT;
+        mxsfb_pdata.sync = MXSFB_SYNC_DATA_ENABLE_HIGH_ACT |
+                                MXSFB_SYNC_DOTCLK_FAILING_ACT;
 }
 
 #define ENET0_MDC__GPIO_4_0     MXS_GPIO_NR(4, 0)
@@ -407,6 +404,7 @@ static void __init cfa10049_init(void)
         mxsfb_pdata.mode_count = ARRAY_SIZE(cfa10049_video_modes);
         mxsfb_pdata.default_bpp = 32;
         mxsfb_pdata.ld_intf_width = STMLCDIF_18BIT;
+        mxsfb_pdata.sync = MXSFB_SYNC_DATA_ENABLE_HIGH_ACT;
 }
 
 static void __init cfa10037_init(void)
@@ -423,6 +421,8 @@ static void __init apf28_init(void)
         mxsfb_pdata.mode_count = ARRAY_SIZE(apf28dev_video_modes);
         mxsfb_pdata.default_bpp = 16;
         mxsfb_pdata.ld_intf_width = STMLCDIF_16BIT;
+        mxsfb_pdata.sync = MXSFB_SYNC_DATA_ENABLE_HIGH_ACT |
+                                MXSFB_SYNC_DOTCLK_FAILING_ACT;
 }
 
 static void __init mxs_machine_init(void)
diff --git a/arch/arm/mach-s5pv210/clock.c b/arch/arm/mach-s5pv210/clock.c
index fcdf52dbcc49..f051f53e35b7 100644
--- a/arch/arm/mach-s5pv210/clock.c
+++ b/arch/arm/mach-s5pv210/clock.c
@@ -214,11 +214,6 @@ static struct clk clk_pcmcdclk2 = {
         .name           = "pcmcdclk",
 };
 
-static struct clk dummy_apb_pclk = {
-        .name           = "apb_pclk",
-        .id             = -1,
-};
-
 static struct clk *clkset_vpllsrc_list[] = {
         [0] = &clk_fin_vpll,
         [1] = &clk_sclk_hdmi27m,
@@ -305,18 +300,6 @@ static struct clk_ops clk_fout_apll_ops = {
 
 static struct clk init_clocks_off[] = {
         {
-                .name           = "dma",
-                .devname        = "dma-pl330.0",
-                .parent         = &clk_hclk_psys.clk,
-                .enable         = s5pv210_clk_ip0_ctrl,
-                .ctrlbit        = (1 << 3),
-        }, {
-                .name           = "dma",
-                .devname        = "dma-pl330.1",
-                .parent         = &clk_hclk_psys.clk,
-                .enable         = s5pv210_clk_ip0_ctrl,
-                .ctrlbit        = (1 << 4),
-        }, {
                 .name           = "rot",
                 .parent         = &clk_hclk_dsys.clk,
                 .enable         = s5pv210_clk_ip0_ctrl,
@@ -573,6 +556,20 @@ static struct clk clk_hsmmc3 = {
         .ctrlbit        = (1<<19),
 };
 
+static struct clk clk_pdma0 = {
+        .name           = "pdma0",
+        .parent         = &clk_hclk_psys.clk,
+        .enable         = s5pv210_clk_ip0_ctrl,
+        .ctrlbit        = (1 << 3),
+};
+
+static struct clk clk_pdma1 = {
+        .name           = "pdma1",
+        .parent         = &clk_hclk_psys.clk,
+        .enable         = s5pv210_clk_ip0_ctrl,
+        .ctrlbit        = (1 << 4),
+};
+
 static struct clk *clkset_uart_list[] = {
         [6] = &clk_mout_mpll.clk,
         [7] = &clk_mout_epll.clk,
@@ -1075,6 +1072,8 @@ static struct clk *clk_cdev[] = {
         &clk_hsmmc1,
         &clk_hsmmc2,
         &clk_hsmmc3,
+        &clk_pdma0,
+        &clk_pdma1,
 };
 
 /* Clock initialisation code */
@@ -1333,6 +1332,8 @@ static struct clk_lookup s5pv210_clk_lookup[] = {
         CLKDEV_INIT(NULL, "spi_busclk0", &clk_p),
         CLKDEV_INIT("s5pv210-spi.0", "spi_busclk1", &clk_sclk_spi0.clk),
         CLKDEV_INIT("s5pv210-spi.1", "spi_busclk1", &clk_sclk_spi1.clk),
+        CLKDEV_INIT("dma-pl330.0", "apb_pclk", &clk_pdma0),
+        CLKDEV_INIT("dma-pl330.1", "apb_pclk", &clk_pdma1),
 };
 
 void __init s5pv210_register_clocks(void)
@@ -1361,6 +1362,5 @@ void __init s5pv210_register_clocks(void)
         for (ptr = 0; ptr < ARRAY_SIZE(clk_cdev); ptr++)
                 s3c_disable_clocks(clk_cdev[ptr], 1);
 
-        s3c24xx_register_clock(&dummy_apb_pclk);
         s3c_pwmclk_init();
 }
diff --git a/arch/arm/mach-s5pv210/mach-goni.c b/arch/arm/mach-s5pv210/mach-goni.c
index 3a38f7b34b94..e373de44a8b6 100644
--- a/arch/arm/mach-s5pv210/mach-goni.c
+++ b/arch/arm/mach-s5pv210/mach-goni.c
@@ -845,7 +845,7 @@ static struct fimc_source_info goni_camera_sensors[] = {
                 .mux_id         = 0,
                 .flags          = V4L2_MBUS_PCLK_SAMPLE_FALLING |
                                   V4L2_MBUS_VSYNC_ACTIVE_LOW,
-                .bus_type       = FIMC_BUS_TYPE_ITU_601,
+                .fimc_bus_type  = FIMC_BUS_TYPE_ITU_601,
                 .board_info     = &noon010pc30_board_info,
                 .i2c_bus_num    = 0,
                 .clk_frequency  = 16000000UL,
diff --git a/arch/arm/mach-shmobile/board-marzen.c b/arch/arm/mach-shmobile/board-marzen.c
index cdcb799e802f..fec49ebc359a 100644
--- a/arch/arm/mach-shmobile/board-marzen.c
+++ b/arch/arm/mach-shmobile/board-marzen.c
@@ -32,6 +32,7 @@
 #include <linux/smsc911x.h>
 #include <linux/spi/spi.h>
 #include <linux/spi/sh_hspi.h>
+#include <linux/mmc/host.h>
 #include <linux/mmc/sh_mobile_sdhi.h>
 #include <linux/mfd/tmio.h>
 #include <linux/usb/otg.h>
diff --git a/arch/arm/net/bpf_jit_32.c b/arch/arm/net/bpf_jit_32.c
index 6828ef6ce80e..a0bd8a755bdf 100644
--- a/arch/arm/net/bpf_jit_32.c
+++ b/arch/arm/net/bpf_jit_32.c
@@ -576,7 +576,7 @@ load_ind:
                         /* x = ((*(frame + k)) & 0xf) << 2; */
                         ctx->seen |= SEEN_X | SEEN_DATA | SEEN_CALL;
                         /* the interpreter should deal with the negative K */
-                        if (k < 0)
+                        if ((int)k < 0)
                                 return -1;
                         /* offset in r1: we might have to take the slow path */
                         emit_mov_i(r_off, k, ctx);
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index fd70a68387eb..9b6d19f74078 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -9,7 +9,6 @@ config ARM64
         select CLONE_BACKWARDS
         select COMMON_CLK
         select GENERIC_CLOCKEVENTS
-        select GENERIC_HARDIRQS_NO_DEPRECATED
         select GENERIC_IOMAP
         select GENERIC_IRQ_PROBE
         select GENERIC_IRQ_SHOW
diff --git a/arch/arm64/Kconfig.debug b/arch/arm64/Kconfig.debug
index 51493430f142..1a6bfe954d49 100644
--- a/arch/arm64/Kconfig.debug
+++ b/arch/arm64/Kconfig.debug
@@ -6,17 +6,6 @@ config FRAME_POINTER
         bool
         default y
 
-config DEBUG_ERRORS
-        bool "Verbose kernel error messages"
-        depends on DEBUG_KERNEL
-        help
-          This option controls verbose debugging information which can be
-          printed when the kernel detects an internal error. This debugging
-          information is useful to kernel hackers when tracking down problems,
-          but mostly meaningless to other people. It's safe to say Y unless
-          you are concerned with the code size or don't want to see these
-          messages.
-
 config DEBUG_STACK_USAGE
         bool "Enable stack utilization instrumentation"
         depends on DEBUG_KERNEL
diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index 9212c7880da7..09bef29f3a09 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -82,4 +82,3 @@ CONFIG_DEBUG_KERNEL=y
 CONFIG_DEBUG_INFO=y
 # CONFIG_FTRACE is not set
 CONFIG_ATOMIC64_SELFTEST=y
-CONFIG_DEBUG_ERRORS=y
diff --git a/arch/arm64/include/asm/ucontext.h b/arch/arm64/include/asm/ucontext.h
index bde960720892..42e04c877428 100644
--- a/arch/arm64/include/asm/ucontext.h
+++ b/arch/arm64/include/asm/ucontext.h
@@ -22,7 +22,7 @@ struct ucontext {
         stack_t           uc_stack;
         sigset_t          uc_sigmask;
         /* glibc uses a 1024-bit sigset_t */
-        __u8              __unused[(1024 - sizeof(sigset_t)) / 8];
+        __u8              __unused[1024 / 8 - sizeof(sigset_t)];
         /* last for future expansion */
         struct sigcontext uc_mcontext;
 };
diff --git a/arch/arm64/kernel/arm64ksyms.c b/arch/arm64/kernel/arm64ksyms.c
index cef3925eaf60..aa3e948f7885 100644
--- a/arch/arm64/kernel/arm64ksyms.c
+++ b/arch/arm64/kernel/arm64ksyms.c
@@ -40,7 +40,9 @@ EXPORT_SYMBOL(__copy_to_user);
 EXPORT_SYMBOL(__clear_user);
 
         /* bitops */
+#ifdef CONFIG_SMP
 EXPORT_SYMBOL(__atomic_hash);
+#endif
 
         /* physical memory */
 EXPORT_SYMBOL(memstart_addr);
diff --git a/arch/arm64/kernel/signal32.c b/arch/arm64/kernel/signal32.c
index 7f4f3673f2bc..e393174fe859 100644
--- a/arch/arm64/kernel/signal32.c
+++ b/arch/arm64/kernel/signal32.c
@@ -549,7 +549,6 @@ int compat_setup_rt_frame(int usig, struct k_sigaction *ka, siginfo_t *info,
                           sigset_t *set, struct pt_regs *regs)
 {
         struct compat_rt_sigframe __user *frame;
-        compat_stack_t stack;
         int err = 0;
 
         frame = compat_get_sigframe(ka, regs, sizeof(*frame));
diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c
index 224b44ab534e..70b8cd4021c4 100644
--- a/arch/arm64/mm/mmu.c
+++ b/arch/arm64/mm/mmu.c
@@ -261,7 +261,7 @@ static void __init create_mapping(phys_addr_t phys, unsigned long virt,
 void __iomem * __init early_io_map(phys_addr_t phys, unsigned long virt)
 {
         unsigned long size, mask;
-        bool page64k = IS_ENABLED(ARM64_64K_PAGES);
+        bool page64k = IS_ENABLED(CONFIG_ARM64_64K_PAGES);
         pgd_t *pgd;
         pud_t *pud;
         pmd_t *pmd;
diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c
index e34f565f595a..6f7dc8b7b35c 100644
--- a/arch/ia64/kernel/process.c
+++ b/arch/ia64/kernel/process.c
@@ -291,7 +291,6 @@ cpu_idle (void)
                 }
 
                 if (!need_resched()) {
-                        void (*idle)(void);
 #ifdef CONFIG_SMP
                         min_xtp();
 #endif
@@ -299,9 +298,7 @@ cpu_idle (void)
                         if (mark_idle)
                                 (*mark_idle)(1);
 
-                        if (!idle)
-                                idle = default_idle;
-                        (*idle)();
+                        default_idle();
                         if (mark_idle)
                                 (*mark_idle)(0);
 #ifdef CONFIG_SMP
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 80821512e9cc..ea5bb045983a 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -90,6 +90,7 @@ config GENERIC_GPIO
 config PPC
         bool
         default y
+        select BINFMT_ELF
         select OF
         select OF_EARLY_FLATTREE
         select HAVE_FTRACE_MCOUNT_RECORD
diff --git a/arch/powerpc/include/asm/mmu-hash64.h b/arch/powerpc/include/asm/mmu-hash64.h
index 2fdb47a19efd..b59e06f507ea 100644
--- a/arch/powerpc/include/asm/mmu-hash64.h
+++ b/arch/powerpc/include/asm/mmu-hash64.h
@@ -343,17 +343,16 @@ extern void slb_set_size(u16 size);
 /*
  * VSID allocation (256MB segment)
  *
- * We first generate a 38-bit "proto-VSID".  For kernel addresses this
- * is equal to the ESID | 1 << 37, for user addresses it is:
- *      (context << USER_ESID_BITS) | (esid & ((1U << USER_ESID_BITS) - 1)
+ * We first generate a 37-bit "proto-VSID". Proto-VSIDs are generated
+ * from mmu context id and effective segment id of the address.
  *
- * This splits the proto-VSID into the below range
- *  0 - (2^(CONTEXT_BITS + USER_ESID_BITS) - 1) : User proto-VSID range
- *  2^(CONTEXT_BITS + USER_ESID_BITS) - 2^(VSID_BITS) : Kernel proto-VSID range
- *
- * We also have CONTEXT_BITS + USER_ESID_BITS = VSID_BITS - 1
- * That is, we assign half of the space to user processes and half
- * to the kernel.
+ * For user processes max context id is limited to ((1ul << 19) - 5)
+ * for kernel space, we use the top 4 context ids to map address as below
+ * NOTE: each context only support 64TB now.
+ * 0x7fffc -  [ 0xc000000000000000 - 0xc0003fffffffffff ]
+ * 0x7fffd -  [ 0xd000000000000000 - 0xd0003fffffffffff ]
+ * 0x7fffe -  [ 0xe000000000000000 - 0xe0003fffffffffff ]
+ * 0x7ffff -  [ 0xf000000000000000 - 0xf0003fffffffffff ]
  *
  * The proto-VSIDs are then scrambled into real VSIDs with the
  * multiplicative hash:
@@ -363,41 +362,49 @@ extern void slb_set_size(u16 size);
  * VSID_MULTIPLIER is prime, so in particular it is
  * co-prime to VSID_MODULUS, making this a 1:1 scrambling function.
  * Because the modulus is 2^n-1 we can compute it efficiently without
- * a divide or extra multiply (see below).
- *
- * This scheme has several advantages over older methods:
- *
- *      - We have VSIDs allocated for every kernel address
- * (i.e. everything above 0xC000000000000000), except the very top
- * segment, which simplifies several things.
+ * a divide or extra multiply (see below). The scramble function gives
+ * robust scattering in the hash table (at least based on some initial
+ * results).
  *
- *      - We allow for USER_ESID_BITS significant bits of ESID and
- * CONTEXT_BITS  bits of context for user addresses.
- *  i.e. 64T (46 bits) of address space for up to half a million contexts.
+ * We also consider VSID 0 special. We use VSID 0 for slb entries mapping
+ * bad address. This enables us to consolidate bad address handling in
+ * hash_page.
  *
- *      - The scramble function gives robust scattering in the hash
- * table (at least based on some initial results).  The previous
- * method was more susceptible to pathological cases giving excessive
- * hash collisions.
+ * We also need to avoid the last segment of the last context, because that
+ * would give a protovsid of 0x1fffffffff. That will result in a VSID 0
+ * because of the modulo operation in vsid scramble. But the vmemmap
+ * (which is what uses region 0xf) will never be close to 64TB in size
+ * (it's 56 bytes per page of system memory).
  */
 
+#define CONTEXT_BITS            19
+#define ESID_BITS               18
+#define ESID_BITS_1T            6
+
+/*
+ * 256MB segment
+ * The proto-VSID space has 2^(CONTEX_BITS + ESID_BITS) - 1 segments
+ * available for user + kernel mapping. The top 4 contexts are used for
+ * kernel mapping. Each segment contains 2^28 bytes. Each
+ * context maps 2^46 bytes (64TB) so we can support 2^19-1 contexts
+ * (19 == 37 + 28 - 46).
+ */
+#define MAX_USER_CONTEXT        ((ASM_CONST(1) << CONTEXT_BITS) - 5)
+
 /*
  * This should be computed such that protovosid * vsid_mulitplier
  * doesn't overflow 64 bits. It should also be co-prime to vsid_modulus
  */
 #define VSID_MULTIPLIER_256M    ASM_CONST(12538073)     /* 24-bit prime */
-#define VSID_BITS_256M          38
+#define VSID_BITS_256M          (CONTEXT_BITS + ESID_BITS)
 #define VSID_MODULUS_256M       ((1UL<<VSID_BITS_256M)-1)
 
 #define VSID_MULTIPLIER_1T      ASM_CONST(12538073)     /* 24-bit prime */
-#define VSID_BITS_1T            26
+#define VSID_BITS_1T            (CONTEXT_BITS + ESID_BITS_1T)
 #define VSID_MODULUS_1T         ((1UL<<VSID_BITS_1T)-1)
 
-#define CONTEXT_BITS            19
-#define USER_ESID_BITS          18
-#define USER_ESID_BITS_1T       6
 
-#define USER_VSID_RANGE (1UL << (USER_ESID_BITS + SID_SHIFT))
+#define USER_VSID_RANGE (1UL << (ESID_BITS + SID_SHIFT))
 
 /*
  * This macro generates asm code to compute the VSID scramble
@@ -421,7 +428,8 @@ extern void slb_set_size(u16 size);
         srdi    rx,rt,VSID_BITS_##size;                                 \
         clrldi  rt,rt,(64-VSID_BITS_##size);                            \
         add     rt,rt,rx;               /* add high and low bits */     \
-        /* Now, r3 == VSID (mod 2^36-1), and lies between 0 and         \
+        /* NOTE: explanation based on VSID_BITS_##size = 36             \
+         * Now, r3 == VSID (mod 2^36-1), and lies between 0 and         \
          * 2^36-1+2^28-1.  That in particular means that if r3 >=       \
          * 2^36-1, then r3+1 has the 2^36 bit set.  So, if r3+1 has     \
          * the bit clear, r3 already has the answer we want, if it      \
@@ -513,34 +521,6 @@ typedef struct {
         })
 #endif /* 1 */
 
-/*
- * This is only valid for addresses >= PAGE_OFFSET
- * The proto-VSID space is divided into two class
- * User:   0 to 2^(CONTEXT_BITS + USER_ESID_BITS) -1
- * kernel: 2^(CONTEXT_BITS + USER_ESID_BITS) to 2^(VSID_BITS) - 1
- *
- * With KERNEL_START at 0xc000000000000000, the proto vsid for
- * the kernel ends up with 0xc00000000 (36 bits). With 64TB
- * support we need to have kernel proto-VSID in the
- * [2^37 to 2^38 - 1] range due to the increased USER_ESID_BITS.
- */
-static inline unsigned long get_kernel_vsid(unsigned long ea, int ssize)
-{
-        unsigned long proto_vsid;
-        /*
-         * We need to make sure proto_vsid for the kernel is
-         * >= 2^(CONTEXT_BITS + USER_ESID_BITS[_1T])
-         */
-        if (ssize == MMU_SEGSIZE_256M) {
-                proto_vsid = ea >> SID_SHIFT;
-                proto_vsid |= (1UL << (CONTEXT_BITS + USER_ESID_BITS));
-                return vsid_scramble(proto_vsid, 256M);
-        }
-        proto_vsid = ea >> SID_SHIFT_1T;
-        proto_vsid |= (1UL << (CONTEXT_BITS + USER_ESID_BITS_1T));
-        return vsid_scramble(proto_vsid, 1T);
-}
-
 /* Returns the segment size indicator for a user address */
 static inline int user_segment_size(unsigned long addr)
 {
@@ -550,17 +530,41 @@ static inline int user_segment_size(unsigned long addr)
         return MMU_SEGSIZE_256M;
 }
 
-/* This is only valid for user addresses (which are below 2^44) */
 static inline unsigned long get_vsid(unsigned long context, unsigned long ea,
                                      int ssize)
 {
+        /*
+         * Bad address. We return VSID 0 for that
+         */
+        if ((ea & ~REGION_MASK) >= PGTABLE_RANGE)
+                return 0;
+
         if (ssize == MMU_SEGSIZE_256M)
-                return vsid_scramble((context << USER_ESID_BITS)
+                return vsid_scramble((context << ESID_BITS)
                                      | (ea >> SID_SHIFT), 256M);
-        return vsid_scramble((context << USER_ESID_BITS_1T)
+        return vsid_scramble((context << ESID_BITS_1T)
                              | (ea >> SID_SHIFT_1T), 1T);
 }
 
+/*
+ * This is only valid for addresses >= PAGE_OFFSET
+ *
+ * For kernel space, we use the top 4 context ids to map address as below
+ * 0x7fffc -  [ 0xc000000000000000 - 0xc0003fffffffffff ]
+ * 0x7fffd -  [ 0xd000000000000000 - 0xd0003fffffffffff ]
+ * 0x7fffe -  [ 0xe000000000000000 - 0xe0003fffffffffff ]
+ * 0x7ffff -  [ 0xf000000000000000 - 0xf0003fffffffffff ]
+ */
+static inline unsigned long get_kernel_vsid(unsigned long ea, int ssize)
+{
+        unsigned long context;
+
+        /*
+         * kernel take the top 4 context from the available range
+         */
+        context = (MAX_USER_CONTEXT) + ((ea >> 60) - 0xc) + 1;
+        return get_vsid(context, ea, ssize);
+}
 #endif /* __ASSEMBLY__ */
 
 #endif /* _ASM_POWERPC_MMU_HASH64_H_ */
diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index 75a3d71b895d..19599ef352bc 100644
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c
@@ -275,7 +275,7 @@ static struct cpu_spec __initdata cpu_specs[] = {
                 .cpu_features           = CPU_FTRS_PPC970,
                 .cpu_user_features      = COMMON_USER_POWER4 |
                         PPC_FEATURE_HAS_ALTIVEC_COMP,
-                .mmu_features           = MMU_FTR_HPTE_TABLE,
+                .mmu_features           = MMU_FTRS_PPC970,
                 .icache_bsize           = 128,
                 .dcache_bsize           = 128,
                 .num_pmcs               = 8,
diff --git a/arch/powerpc/kernel/epapr_paravirt.c b/arch/powerpc/kernel/epapr_paravirt.c
index f3eab8594d9f..d44a571e45a7 100644
--- a/arch/powerpc/kernel/epapr_paravirt.c
+++ b/arch/powerpc/kernel/epapr_paravirt.c
@@ -23,8 +23,10 @@
 #include <asm/code-patching.h>
 #include <asm/machdep.h>
 
+#if !defined(CONFIG_64BIT) || defined(CONFIG_PPC_BOOK3E_64)
 extern void epapr_ev_idle(void);
 extern u32 epapr_ev_idle_start[];
+#endif
 
 bool epapr_paravirt_enabled;
 
@@ -47,11 +49,15 @@ static int __init epapr_paravirt_init(void)
 
         for (i = 0; i < (len / 4); i++) {
                 patch_instruction(epapr_hypercall_start + i, insts[i]);
+#if !defined(CONFIG_64BIT) || defined(CONFIG_PPC_BOOK3E_64)
                 patch_instruction(epapr_ev_idle_start + i, insts[i]);
+#endif
         }
 
+#if !defined(CONFIG_64BIT) || defined(CONFIG_PPC_BOOK3E_64)
         if (of_get_property(hyper_node, "has-idle", NULL))
                 ppc_md.power_save = epapr_ev_idle;
+#endif
 
         epapr_paravirt_enabled = true;
 
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index 87ef8f5ee5bc..56bd92362ce1 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -1066,78 +1066,6 @@ unrecov_user_slb:
 #endif /* __DISABLED__ */
 
 
-/*
- * r13 points to the PACA, r9 contains the saved CR,
- * r12 contain the saved SRR1, SRR0 is still ready for return
- * r3 has the faulting address
- * r9 - r13 are saved in paca->exslb.
- * r3 is saved in paca->slb_r3
- * We assume we aren't going to take any exceptions during this procedure.
- */
-_GLOBAL(slb_miss_realmode)
-        mflr    r10
-#ifdef CONFIG_RELOCATABLE
-        mtctr   r11
-#endif
-
-        stw     r9,PACA_EXSLB+EX_CCR(r13)       /* save CR in exc. frame */
-        std     r10,PACA_EXSLB+EX_LR(r13)       /* save LR */
-
-        bl      .slb_allocate_realmode
-
-        /* All done -- return from exception. */
-
-        ld      r10,PACA_EXSLB+EX_LR(r13)
-        ld      r3,PACA_EXSLB+EX_R3(r13)
-        lwz     r9,PACA_EXSLB+EX_CCR(r13)       /* get saved CR */
-
-        mtlr    r10
-
-        andi.   r10,r12,MSR_RI  /* check for unrecoverable exception */
-        beq-    2f
-
-.machine        push
-.machine        "power4"
-        mtcrf   0x80,r9
-        mtcrf   0x01,r9         /* slb_allocate uses cr0 and cr7 */
-.machine        pop
-
-        RESTORE_PPR_PACA(PACA_EXSLB, r9)
-        ld      r9,PACA_EXSLB+EX_R9(r13)
-        ld      r10,PACA_EXSLB+EX_R10(r13)
-        ld      r11,PACA_EXSLB+EX_R11(r13)
-        ld      r12,PACA_EXSLB+EX_R12(r13)
-        ld      r13,PACA_EXSLB+EX_R13(r13)
-        rfid
-        b       .       /* prevent speculative execution */
-
-2:      mfspr   r11,SPRN_SRR0
-        ld      r10,PACAKBASE(r13)
-        LOAD_HANDLER(r10,unrecov_slb)
-        mtspr   SPRN_SRR0,r10
-        ld      r10,PACAKMSR(r13)
-        mtspr   SPRN_SRR1,r10
-        rfid
-        b       .
-
-unrecov_slb:
-        EXCEPTION_PROLOG_COMMON(0x4100, PACA_EXSLB)
-        DISABLE_INTS
-        bl      .save_nvgprs
-1:      addi    r3,r1,STACK_FRAME_OVERHEAD
-        bl      .unrecoverable_exception
-        b       1b
-
-
-#ifdef CONFIG_PPC_970_NAP
-power4_fixup_nap:
-        andc    r9,r9,r10
-        std     r9,TI_LOCAL_FLAGS(r11)
-        ld      r10,_LINK(r1)           /* make idle task do the */
-        std     r10,_NIP(r1)            /* equivalent of a blr */
-        blr
-#endif
-
         .align  7
         .globl alignment_common
 alignment_common:
@@ -1336,6 +1264,78 @@ _GLOBAL(opal_mc_secondary_handler)
 
 
 /*
+ * r13 points to the PACA, r9 contains the saved CR,
+ * r12 contain the saved SRR1, SRR0 is still ready for return
+ * r3 has the faulting address
+ * r9 - r13 are saved in paca->exslb.
+ * r3 is saved in paca->slb_r3
+ * We assume we aren't going to take any exceptions during this procedure.
+ */
+_GLOBAL(slb_miss_realmode)
+        mflr    r10
+#ifdef CONFIG_RELOCATABLE
+        mtctr   r11
+#endif
+
+        stw     r9,PACA_EXSLB+EX_CCR(r13)       /* save CR in exc. frame */
+        std     r10,PACA_EXSLB+EX_LR(r13)       /* save LR */
+
+        bl      .slb_allocate_realmode
+
+        /* All done -- return from exception. */
+
+        ld      r10,PACA_EXSLB+EX_LR(r13)
+        ld      r3,PACA_EXSLB+EX_R3(r13)
+        lwz     r9,PACA_EXSLB+EX_CCR(r13)       /* get saved CR */
+
+        mtlr    r10
+
+        andi.   r10,r12,MSR_RI  /* check for unrecoverable exception */
+        beq-    2f
+
+.machine        push
+.machine        "power4"
+        mtcrf   0x80,r9
+        mtcrf   0x01,r9         /* slb_allocate uses cr0 and cr7 */
+.machine        pop
+
+        RESTORE_PPR_PACA(PACA_EXSLB, r9)
+        ld      r9,PACA_EXSLB+EX_R9(r13)
+        ld      r10,PACA_EXSLB+EX_R10(r13)
+        ld      r11,PACA_EXSLB+EX_R11(r13)
+        ld      r12,PACA_EXSLB+EX_R12(r13)
+        ld      r13,PACA_EXSLB+EX_R13(r13)
+        rfid
+        b       .       /* prevent speculative execution */
+
+2:      mfspr   r11,SPRN_SRR0
+        ld      r10,PACAKBASE(r13)
+        LOAD_HANDLER(r10,unrecov_slb)
+        mtspr   SPRN_SRR0,r10
+        ld      r10,PACAKMSR(r13)
+        mtspr   SPRN_SRR1,r10
+        rfid
+        b       .
+
+unrecov_slb:
+        EXCEPTION_PROLOG_COMMON(0x4100, PACA_EXSLB)
+        DISABLE_INTS
+        bl      .save_nvgprs
+1:      addi    r3,r1,STACK_FRAME_OVERHEAD
+        bl      .unrecoverable_exception
+        b       1b
+
+
+#ifdef CONFIG_PPC_970_NAP
+power4_fixup_nap:
+        andc    r9,r9,r10
+        std     r9,TI_LOCAL_FLAGS(r11)
+        ld      r10,_LINK(r1)           /* make idle task do the */
+        std     r10,_NIP(r1)            /* equivalent of a blr */
+        blr
+#endif
+
+/*
  * Hash table stuff
  */
         .align  7
@@ -1452,20 +1452,36 @@ do_ste_alloc:
 _GLOBAL(do_stab_bolted)
         stw     r9,PACA_EXSLB+EX_CCR(r13)       /* save CR in exc. frame */
         std     r11,PACA_EXSLB+EX_SRR0(r13)     /* save SRR0 in exc. frame */
+        mfspr   r11,SPRN_DAR                    /* ea */
 
+        /*
+         * check for bad kernel/user address
+         * (ea & ~REGION_MASK) >= PGTABLE_RANGE
+         */
+        rldicr. r9,r11,4,(63 - 46 - 4)
+        li      r9,0    /* VSID = 0 for bad address */
+        bne-    0f
+
+        /*
+         * Calculate VSID:
+         * This is the kernel vsid, we take the top for context from
+         * the range. context = (MAX_USER_CONTEXT) + ((ea >> 60) - 0xc) + 1
+         * Here we know that (ea >> 60) == 0xc
+         */
+        lis     r9,(MAX_USER_CONTEXT + 1)@ha
+        addi    r9,r9,(MAX_USER_CONTEXT + 1)@l
+
+        srdi    r10,r11,SID_SHIFT
+        rldimi  r10,r9,ESID_BITS,0 /* proto vsid */
+        ASM_VSID_SCRAMBLE(r10, r9, 256M)
+        rldic   r9,r10,12,16    /* r9 = vsid << 12 */
+
+0:
         /* Hash to the primary group */
         ld      r10,PACASTABVIRT(r13)
-        mfspr   r11,SPRN_DAR
-        srdi    r11,r11,28
+        srdi    r11,r11,SID_SHIFT
         rldimi  r10,r11,7,52    /* r10 = first ste of the group */
 
-        /* Calculate VSID */
-        /* This is a kernel address, so protovsid = ESID | 1 << 37 */
-        li      r9,0x1
-        rldimi  r11,r9,(CONTEXT_BITS + USER_ESID_BITS),0
-        ASM_VSID_SCRAMBLE(r11, r9, 256M)
-        rldic   r9,r11,12,16    /* r9 = vsid << 12 */
-
         /* Search the primary group for a free entry */
 1:      ld      r11,0(r10)      /* Test valid bit of the current ste    */
         andi.   r11,r11,0x80
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 7f7fb7fd991b..13f8d168b3f1 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -2832,11 +2832,13 @@ static void unreloc_toc(void)
 {
 }
 #else
-static void __reloc_toc(void *tocstart, unsigned long offset,
-                        unsigned long nr_entries)
+static void __reloc_toc(unsigned long offset, unsigned long nr_entries)
 {
         unsigned long i;
-        unsigned long *toc_entry = (unsigned long *)tocstart;
+        unsigned long *toc_entry;
+
+        /* Get the start of the TOC by using r2 directly. */
+        asm volatile("addi %0,2,-0x8000" : "=b" (toc_entry));
 
         for (i = 0; i < nr_entries; i++) {
                 *toc_entry = *toc_entry + offset;
@@ -2850,8 +2852,7 @@ static void reloc_toc(void)
         unsigned long nr_entries =
                 (__prom_init_toc_end - __prom_init_toc_start) / sizeof(long);
 
-        /* Need to add offset to get at __prom_init_toc_start */
-        __reloc_toc(__prom_init_toc_start + offset, offset, nr_entries);
+        __reloc_toc(offset, nr_entries);
 
         mb();
 }
@@ -2864,8 +2865,7 @@ static void unreloc_toc(void)
 
         mb();
 
-        /* __prom_init_toc_start has been relocated, no need to add offset */
-        __reloc_toc(__prom_init_toc_start, -offset, nr_entries);
+        __reloc_toc(-offset, nr_entries);
 }
 #endif
 #endif
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index 245c1b6a0858..f9b30c68ba47 100644
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -1428,6 +1428,7 @@ static long ppc_set_hwdebug(struct task_struct *child,
 
         brk.address = bp_info->addr & ~7UL;
         brk.type = HW_BRK_TYPE_TRANSLATE;
+        brk.len = 8;
         if (bp_info->trigger_type & PPC_BREAKPOINT_TRIGGER_READ)
                 brk.type |= HW_BRK_TYPE_READ;
         if (bp_info->trigger_type & PPC_BREAKPOINT_TRIGGER_WRITE)
diff --git a/arch/powerpc/kvm/book3s_64_mmu_host.c b/arch/powerpc/kvm/book3s_64_mmu_host.c
index ead58e317294..5d7d29a313eb 100644
--- a/arch/powerpc/kvm/book3s_64_mmu_host.c
+++ b/arch/powerpc/kvm/book3s_64_mmu_host.c
@@ -326,8 +326,8 @@ int kvmppc_mmu_init(struct kvm_vcpu *vcpu)
         vcpu3s->context_id[0] = err;
 
         vcpu3s->proto_vsid_max = ((vcpu3s->context_id[0] + 1)
-                                  << USER_ESID_BITS) - 1;
-        vcpu3s->proto_vsid_first = vcpu3s->context_id[0] << USER_ESID_BITS;
+                                  << ESID_BITS) - 1;
+        vcpu3s->proto_vsid_first = vcpu3s->context_id[0] << ESID_BITS;
         vcpu3s->proto_vsid_next = vcpu3s->proto_vsid_first;
 
         kvmppc_mmu_hpte_init(vcpu);
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index 1b6e1271719f..f410c3e12c1e 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -195,6 +195,11 @@ int htab_bolt_mapping(unsigned long vstart, unsigned long vend,
                 unsigned long vpn  = hpt_vpn(vaddr, vsid, ssize);
                 unsigned long tprot = prot;
 
+                /*
+                 * If we hit a bad address return error.
+                 */
+                if (!vsid)
+                        return -1;
                 /* Make kernel text executable */
                 if (overlaps_kernel_text(vaddr, vaddr + step))
                         tprot &= ~HPTE_R_N;
@@ -759,6 +764,8 @@ void __init early_init_mmu(void)
         /* Initialize stab / SLB management */
         if (mmu_has_feature(MMU_FTR_SLB))
                 slb_initialize();
+        else
+                stab_initialize(get_paca()->stab_real);
 }
 
 #ifdef CONFIG_SMP
@@ -922,11 +929,6 @@ int hash_page(unsigned long ea, unsigned long access, unsigned long trap)
         DBG_LOW("hash_page(ea=%016lx, access=%lx, trap=%lx\n",
                 ea, access, trap);
 
-        if ((ea & ~REGION_MASK) >= PGTABLE_RANGE) {
-                DBG_LOW(" out of pgtable range !\n");
-                return 1;
-        }
-
         /* Get region & vsid */
         switch (REGION_ID(ea)) {
         case USER_REGION_ID:
@@ -957,6 +959,11 @@ int hash_page(unsigned long ea, unsigned long access, unsigned long trap)
         }
         DBG_LOW(" mm=%p, mm->pgdir=%p, vsid=%016lx\n", mm, mm->pgd, vsid);
 
+        /* Bad address. */
+        if (!vsid) {
+                DBG_LOW("Bad address!\n");
+                return 1;
+        }
         /* Get pgdir */
         pgdir = mm->pgd;
         if (pgdir == NULL)
@@ -1126,6 +1133,8 @@ void hash_preload(struct mm_struct *mm, unsigned long ea,
         /* Get VSID */
         ssize = user_segment_size(ea);
         vsid = get_vsid(mm->context.id, ea, ssize);
+        if (!vsid)
+                return;
 
         /* Hash doesn't like irqs */
         local_irq_save(flags);
@@ -1233,6 +1242,9 @@ static void kernel_map_linear_page(unsigned long vaddr, unsigned long lmi)
         hash = hpt_hash(vpn, PAGE_SHIFT, mmu_kernel_ssize);
         hpteg = ((hash & htab_hash_mask) * HPTES_PER_GROUP);
 
+        /* Don't create HPTE entries for bad address */
+        if (!vsid)
+                return;
         ret = ppc_md.hpte_insert(hpteg, vpn, __pa(vaddr),
                                  mode, HPTE_V_BOLTED,
                                  mmu_linear_psize, mmu_kernel_ssize);
diff --git a/arch/powerpc/mm/mmu_context_hash64.c b/arch/powerpc/mm/mmu_context_hash64.c
index 40bc5b0ace54..d1d1b92c5b99 100644
--- a/arch/powerpc/mm/mmu_context_hash64.c
+++ b/arch/powerpc/mm/mmu_context_hash64.c
@@ -29,15 +29,6 @@
 static DEFINE_SPINLOCK(mmu_context_lock);
 static DEFINE_IDA(mmu_context_ida);
 
-/*
- * 256MB segment
- * The proto-VSID space has 2^(CONTEX_BITS + USER_ESID_BITS) - 1 segments
- * available for user mappings. Each segment contains 2^28 bytes. Each
- * context maps 2^46 bytes (64TB) so we can support 2^19-1 contexts
- * (19 == 37 + 28 - 46).
- */
-#define MAX_CONTEXT     ((1UL << CONTEXT_BITS) - 1)
-
 int __init_new_context(void)
 {
         int index;
@@ -56,7 +47,7 @@ again:
         else if (err)
                 return err;
 
-        if (index > MAX_CONTEXT) {
+        if (index > MAX_USER_CONTEXT) {
                 spin_lock(&mmu_context_lock);
                 ida_remove(&mmu_context_ida, index);
                 spin_unlock(&mmu_context_lock);
diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c
index e212a271c7a4..654258f165ae 100644
--- a/arch/powerpc/mm/pgtable_64.c
+++ b/arch/powerpc/mm/pgtable_64.c
@@ -61,7 +61,7 @@
 #endif
 
 #ifdef CONFIG_PPC_STD_MMU_64
-#if TASK_SIZE_USER64 > (1UL << (USER_ESID_BITS + SID_SHIFT))
+#if TASK_SIZE_USER64 > (1UL << (ESID_BITS + SID_SHIFT))
 #error TASK_SIZE_USER64 exceeds user VSID range
 #endif
 #endif
diff --git a/arch/powerpc/mm/slb_low.S b/arch/powerpc/mm/slb_low.S
index 1a16ca227757..17aa6dfceb34 100644
--- a/arch/powerpc/mm/slb_low.S
+++ b/arch/powerpc/mm/slb_low.S
@@ -31,10 +31,15 @@
  * No other registers are examined or changed.
  */
 _GLOBAL(slb_allocate_realmode)
-        /* r3 = faulting address */
+        /*
+         * check for bad kernel/user address
+         * (ea & ~REGION_MASK) >= PGTABLE_RANGE
+         */
+        rldicr. r9,r3,4,(63 - 46 - 4)
+        bne-    8f
 
         srdi    r9,r3,60                /* get region */
-        srdi    r10,r3,28               /* get esid */
+        srdi    r10,r3,SID_SHIFT        /* get esid */
         cmpldi  cr7,r9,0xc              /* cmp PAGE_OFFSET for later use */
 
         /* r3 = address, r10 = esid, cr7 = <> PAGE_OFFSET */
@@ -56,12 +61,14 @@ _GLOBAL(slb_allocate_realmode)
          */
 _GLOBAL(slb_miss_kernel_load_linear)
         li      r11,0
-        li      r9,0x1
         /*
-         * for 1T we shift 12 bits more.  slb_finish_load_1T will do
-         * the necessary adjustment
+         * context = (MAX_USER_CONTEXT) + ((ea >> 60) - 0xc) + 1
+         * r9 = region id.
          */
-        rldimi  r10,r9,(CONTEXT_BITS + USER_ESID_BITS),0
+        addis   r9,r9,(MAX_USER_CONTEXT - 0xc + 1)@ha
+        addi    r9,r9,(MAX_USER_CONTEXT - 0xc + 1)@l
+
+
 BEGIN_FTR_SECTION
         b       slb_finish_load
 END_MMU_FTR_SECTION_IFCLR(MMU_FTR_1T_SEGMENT)
@@ -91,24 +98,19 @@ _GLOBAL(slb_miss_kernel_load_vmemmap)
         _GLOBAL(slb_miss_kernel_load_io)
         li      r11,0
 6:
-        li      r9,0x1
         /*
-         * for 1T we shift 12 bits more.  slb_finish_load_1T will do
-         * the necessary adjustment
+         * context = (MAX_USER_CONTEXT) + ((ea >> 60) - 0xc) + 1
+         * r9 = region id.
          */
-        rldimi  r10,r9,(CONTEXT_BITS + USER_ESID_BITS),0
+        addis   r9,r9,(MAX_USER_CONTEXT - 0xc + 1)@ha
+        addi    r9,r9,(MAX_USER_CONTEXT - 0xc + 1)@l
+
 BEGIN_FTR_SECTION
         b       slb_finish_load
 END_MMU_FTR_SECTION_IFCLR(MMU_FTR_1T_SEGMENT)
         b       slb_finish_load_1T
 
-0:      /* user address: proto-VSID = context << 15 | ESID. First check
-         * if the address is within the boundaries of the user region
-         */
-        srdi.   r9,r10,USER_ESID_BITS
-        bne-    8f                      /* invalid ea bits set */
-
-
+0:
         /* when using slices, we extract the psize off the slice bitmaps
          * and then we need to get the sllp encoding off the mmu_psize_defs
          * array.
@@ -164,15 +166,13 @@ END_MMU_FTR_SECTION_IFCLR(MMU_FTR_1T_SEGMENT)
         ld      r9,PACACONTEXTID(r13)
 BEGIN_FTR_SECTION
         cmpldi  r10,0x1000
-END_MMU_FTR_SECTION_IFSET(MMU_FTR_1T_SEGMENT)
-        rldimi  r10,r9,USER_ESID_BITS,0
-BEGIN_FTR_SECTION
         bge     slb_finish_load_1T
 END_MMU_FTR_SECTION_IFSET(MMU_FTR_1T_SEGMENT)
         b       slb_finish_load
 
 8:      /* invalid EA */
         li      r10,0                   /* BAD_VSID */
+        li      r9,0                    /* BAD_VSID */
         li      r11,SLB_VSID_USER       /* flags don't much matter */
         b       slb_finish_load
 
@@ -221,8 +221,6 @@ _GLOBAL(slb_allocate_user)
 
         /* get context to calculate proto-VSID */
         ld      r9,PACACONTEXTID(r13)
-        rldimi  r10,r9,USER_ESID_BITS,0
-
         /* fall through slb_finish_load */
 
 #endif /* __DISABLED__ */
@@ -231,9 +229,10 @@ _GLOBAL(slb_allocate_user)
 /*
  * Finish loading of an SLB entry and return
  *
- * r3 = EA, r10 = proto-VSID, r11 = flags, clobbers r9, cr7 = <> PAGE_OFFSET
+ * r3 = EA, r9 = context, r10 = ESID, r11 = flags, clobbers r9, cr7 = <> PAGE_OFFSET
  */
 slb_finish_load:
+        rldimi  r10,r9,ESID_BITS,0
         ASM_VSID_SCRAMBLE(r10,r9,256M)
         /*
          * bits above VSID_BITS_256M need to be ignored from r10
@@ -298,10 +297,11 @@ _GLOBAL(slb_compare_rr_to_size)
 /*
  * Finish loading of a 1T SLB entry (for the kernel linear mapping) and return.
  *
- * r3 = EA, r10 = proto-VSID, r11 = flags, clobbers r9
+ * r3 = EA, r9 = context, r10 = ESID(256MB), r11 = flags, clobbers r9
  */
 slb_finish_load_1T:
-        srdi    r10,r10,40-28           /* get 1T ESID */
+        srdi    r10,r10,(SID_SHIFT_1T - SID_SHIFT)      /* get 1T ESID */
+        rldimi  r10,r9,ESID_BITS_1T,0
         ASM_VSID_SCRAMBLE(r10,r9,1T)
         /*
          * bits above VSID_BITS_1T need to be ignored from r10
diff --git a/arch/powerpc/mm/tlb_hash64.c b/arch/powerpc/mm/tlb_hash64.c
index 0d82ef50dc3f..023ec8a13f38 100644
--- a/arch/powerpc/mm/tlb_hash64.c
+++ b/arch/powerpc/mm/tlb_hash64.c
@@ -82,11 +82,11 @@ void hpte_need_flush(struct mm_struct *mm, unsigned long addr,
         if (!is_kernel_addr(addr)) {
                 ssize = user_segment_size(addr);
                 vsid = get_vsid(mm->context.id, addr, ssize);
-                WARN_ON(vsid == 0);
         } else {
                 vsid = get_kernel_vsid(addr, mmu_kernel_ssize);
                 ssize = mmu_kernel_ssize;
         }
+        WARN_ON(vsid == 0);
         vpn = hpt_vpn(addr, vsid, ssize);
         rpte = __real_pte(__pte(pte), ptep);
 
diff --git a/arch/powerpc/perf/power7-pmu.c b/arch/powerpc/perf/power7-pmu.c
index b554879bd31e..3c475d6267c7 100644
--- a/arch/powerpc/perf/power7-pmu.c
+++ b/arch/powerpc/perf/power7-pmu.c
@@ -420,7 +420,20 @@ static struct attribute_group power7_pmu_events_group = {
         .attrs = power7_events_attr,
 };
 
+PMU_FORMAT_ATTR(event, "config:0-19");
+
+static struct attribute *power7_pmu_format_attr[] = {
+        &format_attr_event.attr,
+        NULL,
+};
+
+struct attribute_group power7_pmu_format_group = {
+        .name = "format",
+        .attrs = power7_pmu_format_attr,
+};
+
 static const struct attribute_group *power7_pmu_attr_groups[] = {
+        &power7_pmu_format_group,
         &power7_pmu_events_group,
         NULL,
 };
diff --git a/arch/powerpc/platforms/85xx/sgy_cts1000.c b/arch/powerpc/platforms/85xx/sgy_cts1000.c
index 611e92f291c4..7179726ba5c5 100644
--- a/arch/powerpc/platforms/85xx/sgy_cts1000.c
+++ b/arch/powerpc/platforms/85xx/sgy_cts1000.c
@@ -69,7 +69,7 @@ static irqreturn_t gpio_halt_irq(int irq, void *__data)
         return IRQ_HANDLED;
 };
 
-static int __devinit gpio_halt_probe(struct platform_device *pdev)
+static int gpio_halt_probe(struct platform_device *pdev)
 {
         enum of_gpio_flags flags;
         struct device_node *node = pdev->dev.of_node;
@@ -128,7 +128,7 @@ static int __devinit gpio_halt_probe(struct platform_device *pdev)
         return 0;
 }
 
-static int __devexit gpio_halt_remove(struct platform_device *pdev)
+static int gpio_halt_remove(struct platform_device *pdev)
 {
         if (halt_node) {
                 int gpio = of_get_gpio(halt_node, 0);
@@ -165,7 +165,7 @@ static struct platform_driver gpio_halt_driver = {
                 .of_match_table = gpio_halt_match,
         },
         .probe          = gpio_halt_probe,
-        .remove         = __devexit_p(gpio_halt_remove),
+        .remove         = gpio_halt_remove,
 };
 
 module_platform_driver(gpio_halt_driver);
diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index cea2f09c4241..18e3b76c78d7 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -124,9 +124,8 @@ config 6xx
         select PPC_HAVE_PMU_SUPPORT
 
 config POWER3
-        bool
         depends on PPC64 && PPC_BOOK3S
-        default y if !POWER4_ONLY
+        def_bool y
 
 config POWER4
         depends on PPC64 && PPC_BOOK3S
@@ -145,8 +144,7 @@ config TUNE_CELL
           but somewhat slower on other machines. This option only changes
           the scheduling of instructions, not the selection of instructions
           itself, so the resulting kernel will keep running on all other
-          machines. When building a kernel that is supposed to run only
-          on Cell, you should also select the POWER4_ONLY option.
+          machines.
 
 # this is temp to handle compat with arch=ppc
 config 8xx
diff --git a/arch/s390/include/asm/eadm.h b/arch/s390/include/asm/eadm.h
index 8d4847191ecc..dc9200ca32ed 100644
--- a/arch/s390/include/asm/eadm.h
+++ b/arch/s390/include/asm/eadm.h
@@ -34,6 +34,8 @@ struct arsb {
         u32 reserved[4];
 } __packed;
 
+#define EQC_WR_PROHIBIT 22
+
 struct msb {
         u8 fmt:4;
         u8 oc:4;
@@ -96,11 +98,13 @@ struct scm_device {
 #define OP_STATE_TEMP_ERR       2
 #define OP_STATE_PERM_ERR       3
 
+enum scm_event {SCM_CHANGE, SCM_AVAIL};
+
 struct scm_driver {
         struct device_driver drv;
         int (*probe) (struct scm_device *scmdev);
         int (*remove) (struct scm_device *scmdev);
-        void (*notify) (struct scm_device *scmdev);
+        void (*notify) (struct scm_device *scmdev, enum scm_event event);
         void (*handler) (struct scm_device *scmdev, void *data, int error);
 };
 
diff --git a/arch/s390/include/asm/tlbflush.h b/arch/s390/include/asm/tlbflush.h
index 1d8fe2b17ef6..6b32af30878c 100644
--- a/arch/s390/include/asm/tlbflush.h
+++ b/arch/s390/include/asm/tlbflush.h
@@ -74,8 +74,6 @@ static inline void __tlb_flush_idte(unsigned long asce)
 
 static inline void __tlb_flush_mm(struct mm_struct * mm)
 {
-        if (unlikely(cpumask_empty(mm_cpumask(mm))))
-                return;
         /*
          * If the machine has IDTE we prefer to do a per mm flush
          * on all cpus instead of doing a local flush if the mm
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index 550228523267..94feff7d6132 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -636,7 +636,8 @@ ENTRY(mcck_int_handler)
         UPDATE_VTIME %r14,%r15,__LC_MCCK_ENTER_TIMER
 mcck_skip:
         SWITCH_ASYNC __LC_GPREGS_SAVE_AREA+32,__LC_PANIC_STACK,PAGE_SHIFT
-        mvc     __PT_R0(64,%r11),__LC_GPREGS_SAVE_AREA
+        stm     %r0,%r7,__PT_R0(%r11)
+        mvc     __PT_R8(32,%r11),__LC_GPREGS_SAVE_AREA+32
         stm     %r8,%r9,__PT_PSW(%r11)
         xc      __SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15)
         l       %r1,BASED(.Ldo_machine_check)
diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S
index 9c837c101297..2e6d60c55f90 100644
--- a/arch/s390/kernel/entry64.S
+++ b/arch/s390/kernel/entry64.S
@@ -678,8 +678,9 @@ ENTRY(mcck_int_handler)
         UPDATE_VTIME %r14,__LC_MCCK_ENTER_TIMER
         LAST_BREAK %r14
 mcck_skip:
-        lghi    %r14,__LC_GPREGS_SAVE_AREA
-        mvc     __PT_R0(128,%r11),0(%r14)
+        lghi    %r14,__LC_GPREGS_SAVE_AREA+64
+        stmg    %r0,%r7,__PT_R0(%r11)
+        mvc     __PT_R8(64,%r11),0(%r14)
         stmg    %r8,%r9,__PT_PSW(%r11)
         xc      __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
         lgr     %r2,%r11                # pass pointer to pt_regs
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index a5360de85ec7..29268859d8ee 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -571,6 +571,8 @@ static void __init setup_memory_end(void)
 
         /* Split remaining virtual space between 1:1 mapping & vmemmap array */
         tmp = VMALLOC_START / (PAGE_SIZE + sizeof(struct page));
+        /* vmemmap contains a multiple of PAGES_PER_SECTION struct pages */
+        tmp = SECTION_ALIGN_UP(tmp);
         tmp = VMALLOC_START - tmp * sizeof(struct page);
         tmp &= ~((vmax >> 11) - 1);     /* align to page table level */
         tmp = min(tmp, 1UL << MAX_PHYSMEM_BITS);
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 289127d5241c..3d361f236308 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -84,12 +84,6 @@ config ARCH_DEFCONFIG
         default "arch/sparc/configs/sparc32_defconfig" if SPARC32
         default "arch/sparc/configs/sparc64_defconfig" if SPARC64
 
-# CONFIG_BITS can be used at source level to get 32/64 bits
-config BITS
-        int
-        default 32 if SPARC32
-        default 64 if SPARC64
-
 config IOMMU_HELPER
         bool
         default y if SPARC64
@@ -197,7 +191,7 @@ config RWSEM_XCHGADD_ALGORITHM
 
 config GENERIC_HWEIGHT
         bool
-        default y if !ULTRA_HAS_POPULATION_COUNT
+        default y
 
 config GENERIC_CALIBRATE_DELAY
         bool
diff --git a/arch/sparc/include/asm/spitfire.h b/arch/sparc/include/asm/spitfire.h
index d06a26601753..6b67e50fb9b4 100644
--- a/arch/sparc/include/asm/spitfire.h
+++ b/arch/sparc/include/asm/spitfire.h
@@ -45,6 +45,7 @@
 #define SUN4V_CHIP_NIAGARA3     0x03
 #define SUN4V_CHIP_NIAGARA4     0x04
 #define SUN4V_CHIP_NIAGARA5     0x05
+#define SUN4V_CHIP_SPARC64X     0x8a
 #define SUN4V_CHIP_UNKNOWN      0xff
 
 #ifndef __ASSEMBLY__
diff --git a/arch/sparc/kernel/cpu.c b/arch/sparc/kernel/cpu.c
index a6c94a2bf9d4..5c5125895db8 100644
--- a/arch/sparc/kernel/cpu.c
+++ b/arch/sparc/kernel/cpu.c
@@ -493,6 +493,12 @@ static void __init sun4v_cpu_probe(void)
                 sparc_pmu_type = "niagara5";
                 break;
 
+        case SUN4V_CHIP_SPARC64X:
+                sparc_cpu_type = "SPARC64-X";
+                sparc_fpu_type = "SPARC64-X integrated FPU";
+                sparc_pmu_type = "sparc64-x";
+                break;
+
         default:
                 printk(KERN_WARNING "CPU: Unknown sun4v cpu type [%s]\n",
                        prom_cpu_compatible);
diff --git a/arch/sparc/kernel/head_64.S b/arch/sparc/kernel/head_64.S
index 2feb15c35d9e..26b706a1867d 100644
--- a/arch/sparc/kernel/head_64.S
+++ b/arch/sparc/kernel/head_64.S
@@ -134,6 +134,8 @@ prom_niagara_prefix:
         .asciz  "SUNW,UltraSPARC-T"
 prom_sparc_prefix:
         .asciz  "SPARC-"
+prom_sparc64x_prefix:
+        .asciz  "SPARC64-X"
         .align  4
 prom_root_compatible:
         .skip   64
@@ -412,7 +414,7 @@ sun4v_chip_type:
         cmp     %g2, 'T'
         be,pt   %xcc, 70f
          cmp    %g2, 'M'
-        bne,pn  %xcc, 4f
+        bne,pn  %xcc, 49f
          nop
 
 70:     ldub    [%g1 + 7], %g2
@@ -425,7 +427,7 @@ sun4v_chip_type:
         cmp     %g2, '5'
         be,pt   %xcc, 5f
          mov    SUN4V_CHIP_NIAGARA5, %g4
-        ba,pt   %xcc, 4f
+        ba,pt   %xcc, 49f
          nop
 
 91:     sethi   %hi(prom_cpu_compatible), %g1
@@ -439,6 +441,25 @@ sun4v_chip_type:
          mov    SUN4V_CHIP_NIAGARA2, %g4
         
 4:
+        /* Athena */
+        sethi   %hi(prom_cpu_compatible), %g1
+        or      %g1, %lo(prom_cpu_compatible), %g1
+        sethi   %hi(prom_sparc64x_prefix), %g7
+        or      %g7, %lo(prom_sparc64x_prefix), %g7
+        mov     9, %g3
+41:     ldub    [%g7], %g2
+        ldub    [%g1], %g4
+        cmp     %g2, %g4
+        bne,pn  %icc, 49f
+        add     %g7, 1, %g7
+        subcc   %g3, 1, %g3
+        bne,pt  %xcc, 41b
+        add     %g1, 1, %g1
+        mov     SUN4V_CHIP_SPARC64X, %g4
+        ba,pt   %xcc, 5f
+        nop
+
+49:
         mov     SUN4V_CHIP_UNKNOWN, %g4
 5:      sethi   %hi(sun4v_chip_type), %g2
         or      %g2, %lo(sun4v_chip_type), %g2
diff --git a/arch/sparc/kernel/leon_pci_grpci2.c b/arch/sparc/kernel/leon_pci_grpci2.c
index fc4320886a3a..4d1487138d26 100644
--- a/arch/sparc/kernel/leon_pci_grpci2.c
+++ b/arch/sparc/kernel/leon_pci_grpci2.c
@@ -186,6 +186,8 @@ struct grpci2_cap_first {
 #define CAP9_IOMAP_OFS 0x20
 #define CAP9_BARSIZE_OFS 0x24
 
+#define TGT 256
+
 struct grpci2_priv {
         struct leon_pci_info    info; /* must be on top of this structure */
         struct grpci2_regs      *regs;
@@ -237,8 +239,12 @@ static int grpci2_cfg_r32(struct grpci2_priv *priv, unsigned int bus,
         if (where & 0x3)
                 return -EINVAL;
 
-        if (bus == 0 && PCI_SLOT(devfn) != 0)
-                devfn += (0x8 * 6);
+        if (bus == 0) {
+                devfn += (0x8 * 6); /* start at AD16=Device0 */
+        } else if (bus == TGT) {
+                bus = 0;
+                devfn = 0; /* special case: bridge controller itself */
+        }
 
         /* Select bus */
         spin_lock_irqsave(&grpci2_dev_lock, flags);
@@ -303,8 +309,12 @@ static int grpci2_cfg_w32(struct grpci2_priv *priv, unsigned int bus,
         if (where & 0x3)
                 return -EINVAL;
 
-        if (bus == 0 && PCI_SLOT(devfn) != 0)
-                devfn += (0x8 * 6);
+        if (bus == 0) {
+                devfn += (0x8 * 6); /* start at AD16=Device0 */
+        } else if (bus == TGT) {
+                bus = 0;
+                devfn = 0; /* special case: bridge controller itself */
+        }
 
         /* Select bus */
         spin_lock_irqsave(&grpci2_dev_lock, flags);
@@ -368,7 +378,7 @@ static int grpci2_read_config(struct pci_bus *bus, unsigned int devfn,
         unsigned int busno = bus->number;
         int ret;
 
-        if (PCI_SLOT(devfn) > 15 || (PCI_SLOT(devfn) == 0 && busno == 0)) {
+        if (PCI_SLOT(devfn) > 15 || busno > 255) {
                 *val = ~0;
                 return 0;
         }
@@ -406,7 +416,7 @@ static int grpci2_write_config(struct pci_bus *bus, unsigned int devfn,
         struct grpci2_priv *priv = grpci2priv;
         unsigned int busno = bus->number;
 
-        if (PCI_SLOT(devfn) > 15 || (PCI_SLOT(devfn) == 0 && busno == 0))
+        if (PCI_SLOT(devfn) > 15 || busno > 255)
                 return 0;
 
 #ifdef GRPCI2_DEBUG_CFGACCESS
@@ -578,15 +588,15 @@ void grpci2_hw_init(struct grpci2_priv *priv)
                 REGSTORE(regs->ahbmst_map[i], priv->pci_area);
 
         /* Get the GRPCI2 Host PCI ID */
-        grpci2_cfg_r32(priv, 0, 0, PCI_VENDOR_ID, &priv->pciid);
+        grpci2_cfg_r32(priv, TGT, 0, PCI_VENDOR_ID, &priv->pciid);
 
         /* Get address to first (always defined) capability structure */
-        grpci2_cfg_r8(priv, 0, 0, PCI_CAPABILITY_LIST, &capptr);
+        grpci2_cfg_r8(priv, TGT, 0, PCI_CAPABILITY_LIST, &capptr);
 
         /* Enable/Disable Byte twisting */
-        grpci2_cfg_r32(priv, 0, 0, capptr+CAP9_IOMAP_OFS, &io_map);
+        grpci2_cfg_r32(priv, TGT, 0, capptr+CAP9_IOMAP_OFS, &io_map);
         io_map = (io_map & ~0x1) | (priv->bt_enabled ? 1 : 0);
-        grpci2_cfg_w32(priv, 0, 0, capptr+CAP9_IOMAP_OFS, io_map);
+        grpci2_cfg_w32(priv, TGT, 0, capptr+CAP9_IOMAP_OFS, io_map);
 
         /* Setup the Host's PCI Target BARs for other peripherals to access,
          * and do DMA to the host's memory. The target BARs can be sized and
@@ -617,17 +627,18 @@ void grpci2_hw_init(struct grpci2_priv *priv)
                                 pciadr = 0;
                         }
                 }
-                grpci2_cfg_w32(priv, 0, 0, capptr+CAP9_BARSIZE_OFS+i*4, bar_sz);
-                grpci2_cfg_w32(priv, 0, 0, PCI_BASE_ADDRESS_0+i*4, pciadr);
-                grpci2_cfg_w32(priv, 0, 0, capptr+CAP9_BAR_OFS+i*4, ahbadr);
+                grpci2_cfg_w32(priv, TGT, 0, capptr+CAP9_BARSIZE_OFS+i*4,
+                                bar_sz);
+                grpci2_cfg_w32(priv, TGT, 0, PCI_BASE_ADDRESS_0+i*4, pciadr);
+                grpci2_cfg_w32(priv, TGT, 0, capptr+CAP9_BAR_OFS+i*4, ahbadr);
                 printk(KERN_INFO "        TGT BAR[%d]: 0x%08x (PCI)-> 0x%08x\n",
                         i, pciadr, ahbadr);
         }
 
         /* set as bus master and enable pci memory responses */
-        grpci2_cfg_r32(priv, 0, 0, PCI_COMMAND, &data);
+        grpci2_cfg_r32(priv, TGT, 0, PCI_COMMAND, &data);
         data |= (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
-        grpci2_cfg_w32(priv, 0, 0, PCI_COMMAND, data);
+        grpci2_cfg_w32(priv, TGT, 0, PCI_COMMAND, data);
 
         /* Enable Error respone (CPU-TRAP) on illegal memory access. */
         REGSTORE(regs->ctrl, CTRL_ER | CTRL_PE);
diff --git a/arch/tile/configs/tilegx_defconfig b/arch/tile/configs/tilegx_defconfig
index 8c5eff6d6df5..47684815e5c8 100644
--- a/arch/tile/configs/tilegx_defconfig
+++ b/arch/tile/configs/tilegx_defconfig
@@ -330,7 +330,6 @@ CONFIG_MD_RAID0=m
 CONFIG_MD_RAID1=m
 CONFIG_MD_RAID10=m
 CONFIG_MD_RAID456=m
-CONFIG_MULTICORE_RAID456=y
 CONFIG_MD_FAULTY=m
 CONFIG_BLK_DEV_DM=m
 CONFIG_DM_DEBUG=y
diff --git a/arch/tile/configs/tilepro_defconfig b/arch/tile/configs/tilepro_defconfig
index e7a3dfcbcda7..dd2b8f0c631f 100644
--- a/arch/tile/configs/tilepro_defconfig
+++ b/arch/tile/configs/tilepro_defconfig
@@ -324,7 +324,6 @@ CONFIG_MD_RAID0=m
 CONFIG_MD_RAID1=m
 CONFIG_MD_RAID10=m
 CONFIG_MD_RAID456=m
-CONFIG_MULTICORE_RAID456=y
 CONFIG_MD_FAULTY=m
 CONFIG_BLK_DEV_DM=m
 CONFIG_DM_DEBUG=y
diff --git a/arch/x86/include/asm/kprobes.h b/arch/x86/include/asm/kprobes.h
index d3ddd17405d0..5a6d2873f80e 100644
--- a/arch/x86/include/asm/kprobes.h
+++ b/arch/x86/include/asm/kprobes.h
@@ -77,6 +77,7 @@ struct arch_specific_insn {
          * a post_handler or break_handler).
          */
         int boostable;
+        bool if_modifier;
 };
 
 struct arch_optimized_insn {
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 635a74d22409..4979778cc7fb 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -414,8 +414,8 @@ struct kvm_vcpu_arch {
         gpa_t time;
         struct pvclock_vcpu_time_info hv_clock;
         unsigned int hw_tsc_khz;
-        unsigned int time_offset;
-        struct page *time_page;
+        struct gfn_to_hva_cache pv_time;
+        bool pv_time_enabled;
         /* set guest stopped flag in pvclock flags field */
         bool pvclock_set_guest_stopped_request;
 
diff --git a/arch/x86/include/asm/xen/hypercall.h b/arch/x86/include/asm/xen/hypercall.h
index c20d1ce62dc6..e709884d0ef9 100644
--- a/arch/x86/include/asm/xen/hypercall.h
+++ b/arch/x86/include/asm/xen/hypercall.h
@@ -382,14 +382,14 @@ HYPERVISOR_console_io(int cmd, int count, char *str)
         return _hypercall3(int, console_io, cmd, count, str);
 }
 
-extern int __must_check HYPERVISOR_physdev_op_compat(int, void *);
+extern int __must_check xen_physdev_op_compat(int, void *);
 
 static inline int
 HYPERVISOR_physdev_op(int cmd, void *arg)
 {
         int rc = _hypercall2(int, physdev_op, cmd, arg);
         if (unlikely(rc == -ENOSYS))
-                rc = HYPERVISOR_physdev_op_compat(cmd, arg);
+                rc = xen_physdev_op_compat(cmd, arg);
         return rc;
 }
 
diff --git a/arch/x86/include/uapi/asm/msr-index.h b/arch/x86/include/uapi/asm/msr-index.h
index 892ce40a7470..7a060f4b411f 100644
--- a/arch/x86/include/uapi/asm/msr-index.h
+++ b/arch/x86/include/uapi/asm/msr-index.h
@@ -44,6 +44,7 @@
 #define SNB_C1_AUTO_UNDEMOTE            (1UL << 27)
 #define SNB_C3_AUTO_UNDEMOTE            (1UL << 28)
 
+#define MSR_PLATFORM_INFO               0x000000ce
 #define MSR_MTRRcap                     0x000000fe
 #define MSR_IA32_BBL_CR_CTL             0x00000119
 #define MSR_IA32_BBL_CR_CTL3            0x0000011e
diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c
index 529c8931fc02..dab7580c47ae 100644
--- a/arch/x86/kernel/cpu/perf_event_intel.c
+++ b/arch/x86/kernel/cpu/perf_event_intel.c
@@ -101,6 +101,10 @@ static struct event_constraint intel_snb_event_constraints[] __read_mostly =
         FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */
         FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */
         FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */
+        INTEL_UEVENT_CONSTRAINT(0x04a3, 0xf), /* CYCLE_ACTIVITY.CYCLES_NO_DISPATCH */
+        INTEL_UEVENT_CONSTRAINT(0x05a3, 0xf), /* CYCLE_ACTIVITY.STALLS_L2_PENDING */
+        INTEL_UEVENT_CONSTRAINT(0x02a3, 0x4), /* CYCLE_ACTIVITY.CYCLES_L1D_PENDING */
+        INTEL_UEVENT_CONSTRAINT(0x06a3, 0x4), /* CYCLE_ACTIVITY.STALLS_L1D_PENDING */
         INTEL_EVENT_CONSTRAINT(0x48, 0x4), /* L1D_PEND_MISS.PENDING */
         INTEL_UEVENT_CONSTRAINT(0x01c0, 0x2), /* INST_RETIRED.PREC_DIST */
         INTEL_EVENT_CONSTRAINT(0xcd, 0x8), /* MEM_TRANS_RETIRED.LOAD_LATENCY */
diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c
index 3f06e6149981..7bfe318d3d8a 100644
--- a/arch/x86/kernel/kprobes/core.c
+++ b/arch/x86/kernel/kprobes/core.c
@@ -375,6 +375,9 @@ static void __kprobes arch_copy_kprobe(struct kprobe *p)
         else
                 p->ainsn.boostable = -1;
 
+        /* Check whether the instruction modifies Interrupt Flag or not */
+        p->ainsn.if_modifier = is_IF_modifier(p->ainsn.insn);
+
         /* Also, displacement change doesn't affect the first byte */
         p->opcode = p->ainsn.insn[0];
 }
@@ -434,7 +437,7 @@ static void __kprobes set_current_kprobe(struct kprobe *p, struct pt_regs *regs,
         __this_cpu_write(current_kprobe, p);
         kcb->kprobe_saved_flags = kcb->kprobe_old_flags
                 = (regs->flags & (X86_EFLAGS_TF | X86_EFLAGS_IF));
-        if (is_IF_modifier(p->ainsn.insn))
+        if (p->ainsn.if_modifier)
                 kcb->kprobe_saved_flags &= ~X86_EFLAGS_IF;
 }
 
diff --git a/arch/x86/kernel/microcode_intel_early.c b/arch/x86/kernel/microcode_intel_early.c
index 7890bc838952..d893e8ed8ac9 100644
--- a/arch/x86/kernel/microcode_intel_early.c
+++ b/arch/x86/kernel/microcode_intel_early.c
@@ -90,13 +90,13 @@ microcode_phys(struct microcode_intel **mc_saved_tmp,
         struct microcode_intel ***mc_saved;
 
         mc_saved = (struct microcode_intel ***)
-                   __pa_symbol(&mc_saved_data->mc_saved);
+                   __pa_nodebug(&mc_saved_data->mc_saved);
         for (i = 0; i < mc_saved_data->mc_saved_count; i++) {
                 struct microcode_intel *p;
 
                 p = *(struct microcode_intel **)
-                        __pa(mc_saved_data->mc_saved + i);
-                mc_saved_tmp[i] = (struct microcode_intel *)__pa(p);
+                        __pa_nodebug(mc_saved_data->mc_saved + i);
+                mc_saved_tmp[i] = (struct microcode_intel *)__pa_nodebug(p);
         }
 }
 #endif
@@ -562,7 +562,7 @@ scan_microcode(unsigned long start, unsigned long end,
         struct cpio_data cd;
         long offset = 0;
 #ifdef CONFIG_X86_32
-        char *p = (char *)__pa_symbol(ucode_name);
+        char *p = (char *)__pa_nodebug(ucode_name);
 #else
         char *p = ucode_name;
 #endif
@@ -630,8 +630,8 @@ static void __cpuinit print_ucode(struct ucode_cpu_info *uci)
         if (mc_intel == NULL)
                 return;
 
-        delay_ucode_info_p = (int *)__pa_symbol(&delay_ucode_info);
-        current_mc_date_p = (int *)__pa_symbol(&current_mc_date);
+        delay_ucode_info_p = (int *)__pa_nodebug(&delay_ucode_info);
+        current_mc_date_p = (int *)__pa_nodebug(&current_mc_date);
 
         *delay_ucode_info_p = 1;
         *current_mc_date_p = mc_intel->hdr.date;
@@ -659,8 +659,8 @@ static inline void __cpuinit print_ucode(struct ucode_cpu_info *uci)
 }
 #endif
 
-static int apply_microcode_early(struct mc_saved_data *mc_saved_data,
-                                 struct ucode_cpu_info *uci)
+static int __cpuinit apply_microcode_early(struct mc_saved_data *mc_saved_data,
+                                           struct ucode_cpu_info *uci)
 {
         struct microcode_intel *mc_intel;
         unsigned int val[2];
@@ -741,15 +741,15 @@ load_ucode_intel_bsp(void)
 #ifdef CONFIG_X86_32
         struct boot_params *boot_params_p;
 
-        boot_params_p = (struct boot_params *)__pa_symbol(&boot_params);
+        boot_params_p = (struct boot_params *)__pa_nodebug(&boot_params);
         ramdisk_image = boot_params_p->hdr.ramdisk_image;
         ramdisk_size  = boot_params_p->hdr.ramdisk_size;
         initrd_start_early = ramdisk_image;
         initrd_end_early = initrd_start_early + ramdisk_size;
 
         _load_ucode_intel_bsp(
-                (struct mc_saved_data *)__pa_symbol(&mc_saved_data),
-                (unsigned long *)__pa_symbol(&mc_saved_in_initrd),
+                (struct mc_saved_data *)__pa_nodebug(&mc_saved_data),
+                (unsigned long *)__pa_nodebug(&mc_saved_in_initrd),
                 initrd_start_early, initrd_end_early, &uci);
 #else
         ramdisk_image = boot_params.hdr.ramdisk_image;
@@ -772,10 +772,10 @@ void __cpuinit load_ucode_intel_ap(void)
         unsigned long *initrd_start_p;
 
         mc_saved_in_initrd_p =
-                (unsigned long *)__pa_symbol(mc_saved_in_initrd);
-        mc_saved_data_p = (struct mc_saved_data *)__pa_symbol(&mc_saved_data);
-        initrd_start_p = (unsigned long *)__pa_symbol(&initrd_start);
-        initrd_start_addr = (unsigned long)__pa_symbol(*initrd_start_p);
+                (unsigned long *)__pa_nodebug(mc_saved_in_initrd);
+        mc_saved_data_p = (struct mc_saved_data *)__pa_nodebug(&mc_saved_data);
+        initrd_start_p = (unsigned long *)__pa_nodebug(&initrd_start);
+        initrd_start_addr = (unsigned long)__pa_nodebug(*initrd_start_p);
 #else
         mc_saved_data_p = &mc_saved_data;
         mc_saved_in_initrd_p = mc_saved_in_initrd;
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index f71500af1f81..f19ac0aca60d 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -1406,25 +1406,15 @@ static int kvm_guest_time_update(struct kvm_vcpu *v)
         unsigned long flags, this_tsc_khz;
         struct kvm_vcpu_arch *vcpu = &v->arch;
         struct kvm_arch *ka = &v->kvm->arch;
-        void *shared_kaddr;
         s64 kernel_ns, max_kernel_ns;
         u64 tsc_timestamp, host_tsc;
-        struct pvclock_vcpu_time_info *guest_hv_clock;
+        struct pvclock_vcpu_time_info guest_hv_clock;
         u8 pvclock_flags;
         bool use_master_clock;
 
         kernel_ns = 0;
         host_tsc = 0;
 
-        /* Keep irq disabled to prevent changes to the clock */
-        local_irq_save(flags);
-        this_tsc_khz = __get_cpu_var(cpu_tsc_khz);
-        if (unlikely(this_tsc_khz == 0)) {
-                local_irq_restore(flags);
-                kvm_make_request(KVM_REQ_CLOCK_UPDATE, v);
-                return 1;
-        }
-
         /*
          * If the host uses TSC clock, then passthrough TSC as stable
          * to the guest.
@@ -1436,6 +1426,15 @@ static int kvm_guest_time_update(struct kvm_vcpu *v)
                 kernel_ns = ka->master_kernel_ns;
         }
         spin_unlock(&ka->pvclock_gtod_sync_lock);
+
+        /* Keep irq disabled to prevent changes to the clock */
+        local_irq_save(flags);
+        this_tsc_khz = __get_cpu_var(cpu_tsc_khz);
+        if (unlikely(this_tsc_khz == 0)) {
+                local_irq_restore(flags);
+                kvm_make_request(KVM_REQ_CLOCK_UPDATE, v);
+                return 1;
+        }
         if (!use_master_clock) {
                 host_tsc = native_read_tsc();
                 kernel_ns = get_kernel_ns();
@@ -1463,7 +1462,7 @@ static int kvm_guest_time_update(struct kvm_vcpu *v)
 
         local_irq_restore(flags);
 
-        if (!vcpu->time_page)
+        if (!vcpu->pv_time_enabled)
                 return 0;
 
         /*
@@ -1525,12 +1524,12 @@ static int kvm_guest_time_update(struct kvm_vcpu *v)
          */
         vcpu->hv_clock.version += 2;
 
-        shared_kaddr = kmap_atomic(vcpu->time_page);
-
-        guest_hv_clock = shared_kaddr + vcpu->time_offset;
+        if (unlikely(kvm_read_guest_cached(v->kvm, &vcpu->pv_time,
+                &guest_hv_clock, sizeof(guest_hv_clock))))
+                return 0;
 
         /* retain PVCLOCK_GUEST_STOPPED if set in guest copy */
-        pvclock_flags = (guest_hv_clock->flags & PVCLOCK_GUEST_STOPPED);
+        pvclock_flags = (guest_hv_clock.flags & PVCLOCK_GUEST_STOPPED);
 
         if (vcpu->pvclock_set_guest_stopped_request) {
                 pvclock_flags |= PVCLOCK_GUEST_STOPPED;
@@ -1543,12 +1542,9 @@ static int kvm_guest_time_update(struct kvm_vcpu *v)
 
         vcpu->hv_clock.flags = pvclock_flags;
 
-        memcpy(shared_kaddr + vcpu->time_offset, &vcpu->hv_clock,
-               sizeof(vcpu->hv_clock));
-
-        kunmap_atomic(shared_kaddr);
-
-        mark_page_dirty(v->kvm, vcpu->time >> PAGE_SHIFT);
+        kvm_write_guest_cached(v->kvm, &vcpu->pv_time,
+                                &vcpu->hv_clock,
+                                sizeof(vcpu->hv_clock));
         return 0;
 }
 
@@ -1837,10 +1833,7 @@ static int kvm_pv_enable_async_pf(struct kvm_vcpu *vcpu, u64 data)
 
 static void kvmclock_reset(struct kvm_vcpu *vcpu)
 {
-        if (vcpu->arch.time_page) {
-                kvm_release_page_dirty(vcpu->arch.time_page);
-                vcpu->arch.time_page = NULL;
-        }
+        vcpu->arch.pv_time_enabled = false;
 }
 
 static void accumulate_steal_time(struct kvm_vcpu *vcpu)
@@ -1947,6 +1940,7 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
                 break;
         case MSR_KVM_SYSTEM_TIME_NEW:
         case MSR_KVM_SYSTEM_TIME: {
+                u64 gpa_offset;
                 kvmclock_reset(vcpu);
 
                 vcpu->arch.time = data;
@@ -1956,14 +1950,17 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
                 if (!(data & 1))
                         break;
 
-                /* ...but clean it before doing the actual write */
-                vcpu->arch.time_offset = data & ~(PAGE_MASK | 1);
+                gpa_offset = data & ~(PAGE_MASK | 1);
 
-                vcpu->arch.time_page =
-                                gfn_to_page(vcpu->kvm, data >> PAGE_SHIFT);
+                /* Check that the address is 32-byte aligned. */
+                if (gpa_offset & (sizeof(struct pvclock_vcpu_time_info) - 1))
+                        break;
 
-                if (is_error_page(vcpu->arch.time_page))
-                        vcpu->arch.time_page = NULL;
+                if (kvm_gfn_to_hva_cache_init(vcpu->kvm,
+                     &vcpu->arch.pv_time, data & ~1ULL))
+                        vcpu->arch.pv_time_enabled = false;
+                else
+                        vcpu->arch.pv_time_enabled = true;
 
                 break;
         }
@@ -2967,7 +2964,7 @@ static int kvm_vcpu_ioctl_x86_set_xcrs(struct kvm_vcpu *vcpu,
  */
 static int kvm_set_guest_paused(struct kvm_vcpu *vcpu)
 {
-        if (!vcpu->arch.time_page)
+        if (!vcpu->arch.pv_time_enabled)
                 return -EINVAL;
         vcpu->arch.pvclock_set_guest_stopped_request = true;
         kvm_make_request(KVM_REQ_CLOCK_UPDATE, vcpu);
@@ -6718,6 +6715,7 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
                 goto fail_free_wbinvd_dirty_mask;
 
         vcpu->arch.ia32_tsc_adjust_msr = 0x0;
+        vcpu->arch.pv_time_enabled = false;
         kvm_async_pf_hash_reset(vcpu);
         kvm_pmu_init(vcpu);
 
diff --git a/arch/x86/lib/usercopy_64.c b/arch/x86/lib/usercopy_64.c
index 05928aae911e..906fea315791 100644
--- a/arch/x86/lib/usercopy_64.c
+++ b/arch/x86/lib/usercopy_64.c
@@ -74,10 +74,10 @@ copy_user_handle_tail(char *to, char *from, unsigned len, unsigned zerorest)
         char c;
         unsigned zero_len;
 
-        for (; len; --len) {
+        for (; len; --len, to++) {
                 if (__get_user_nocheck(c, from++, sizeof(char)))
                         break;
-                if (__put_user_nocheck(c, to++, sizeof(char)))
+                if (__put_user_nocheck(c, to, sizeof(char)))
                         break;
         }
 
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index e8e34938c57d..6afbb2ca9a0a 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -1467,8 +1467,6 @@ static void __init xen_write_cr3_init(unsigned long cr3)
         __xen_write_cr3(true, cr3);
 
         xen_mc_issue(PARAVIRT_LAZY_CPU);  /* interrupts restored */
-
-        pv_mmu_ops.write_cr3 = &xen_write_cr3;
 }
 #endif
 
@@ -2122,6 +2120,7 @@ static void __init xen_post_allocator_init(void)
 #endif
 
 #ifdef CONFIG_X86_64
+        pv_mmu_ops.write_cr3 = &xen_write_cr3;
         SetPagePinned(virt_to_page(level3_user_vsyscall));
 #endif
         xen_mark_init_mm_pinned();
diff --git a/block/blk-flush.c b/block/blk-flush.c
index db8f1b507857..cc2b827a853c 100644
--- a/block/blk-flush.c
+++ b/block/blk-flush.c
@@ -444,7 +444,7 @@ int blkdev_issue_flush(struct block_device *bdev, gfp_t gfp_mask,
          * copied from blk_rq_pos(rq).
          */
         if (error_sector)
-               *error_sector = bio->bi_sector;
+                *error_sector = bio->bi_sector;
 
         if (!bio_flagged(bio, BIO_UPTODATE))
                 ret = -EIO;
diff --git a/block/partition-generic.c b/block/partition-generic.c
index 789cdea05893..ae95ee6a58aa 100644
--- a/block/partition-generic.c
+++ b/block/partition-generic.c
@@ -257,6 +257,7 @@ void delete_partition(struct gendisk *disk, int partno)
 
         hd_struct_put(part);
 }
+EXPORT_SYMBOL(delete_partition);
 
 static ssize_t whole_disk_show(struct device *dev,
                                struct device_attribute *attr, char *buf)
diff --git a/drivers/acpi/apei/cper.c b/drivers/acpi/apei/cper.c
index 1e5d8a40101e..fefc2ca7cc3e 100644
--- a/drivers/acpi/apei/cper.c
+++ b/drivers/acpi/apei/cper.c
@@ -405,7 +405,7 @@ int apei_estatus_check(const struct acpi_hest_generic_status *estatus)
                 return rc;
         data_len = estatus->data_length;
         gdata = (struct acpi_hest_generic_data *)(estatus + 1);
-        while (data_len > sizeof(*gdata)) {
+        while (data_len >= sizeof(*gdata)) {
                 gedata_len = gdata->error_data_length;
                 if (gedata_len > data_len - sizeof(*gdata))
                         return -EINVAL;
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index 0ac546d5e53f..5ff173066127 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -646,6 +646,7 @@ static void handle_root_bridge_insertion(acpi_handle handle)
 
 static void handle_root_bridge_removal(struct acpi_device *device)
 {
+        acpi_status status;
         struct acpi_eject_event *ej_event;
 
         ej_event = kmalloc(sizeof(*ej_event), GFP_KERNEL);
@@ -661,7 +662,9 @@ static void handle_root_bridge_removal(struct acpi_device *device)
         ej_event->device = device;
         ej_event->event = ACPI_NOTIFY_EJECT_REQUEST;
 
-        acpi_bus_hot_remove_device(ej_event);
+        status = acpi_os_hotplug_execute(acpi_bus_hot_remove_device, ej_event);
+        if (ACPI_FAILURE(status))
+                kfree(ej_event);
 }
 
 static void _handle_hotplug_event_root(struct work_struct *work)
@@ -676,8 +679,9 @@ static void _handle_hotplug_event_root(struct work_struct *work)
         handle = hp_work->handle;
         type = hp_work->type;
 
-        root = acpi_pci_find_root(handle);
+        acpi_scan_lock_acquire();
 
+        root = acpi_pci_find_root(handle);
         acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
 
         switch (type) {
@@ -711,6 +715,7 @@ static void _handle_hotplug_event_root(struct work_struct *work)
                 break;
         }
 
+        acpi_scan_lock_release();
         kfree(hp_work); /* allocated in handle_hotplug_event_bridge */
         kfree(buffer.pointer);
 }
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 24213033fbae..9c1a435d10e6 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -193,6 +193,14 @@ static struct dmi_system_id __initdata acpisleep_dmi_table[] = {
         },
         {
         .callback = init_nvs_nosave,
+        .ident = "Sony Vaio VGN-FW21M",
+        .matches = {
+                DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
+                DMI_MATCH(DMI_PRODUCT_NAME, "VGN-FW21M"),
+                },
+        },
+        {
+        .callback = init_nvs_nosave,
         .ident = "Sony Vaio VPCEB17FX",
         .matches = {
                 DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
diff --git a/drivers/amba/tegra-ahb.c b/drivers/amba/tegra-ahb.c
index 093c43554963..1f44e56cc65d 100644
--- a/drivers/amba/tegra-ahb.c
+++ b/drivers/amba/tegra-ahb.c
@@ -158,7 +158,7 @@ int tegra_ahb_enable_smmu(struct device_node *dn)
 EXPORT_SYMBOL(tegra_ahb_enable_smmu);
 #endif
 
-#ifdef CONFIG_PM_SLEEP
+#ifdef CONFIG_PM
 static int tegra_ahb_suspend(struct device *dev)
 {
         int i;
diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
index 3e751b74615e..a5a3ebcbdd2c 100644
--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
@@ -59,15 +59,16 @@ config ATA_ACPI
           option libata.noacpi=1
 
 config SATA_ZPODD
-        bool "SATA Zero Power ODD Support"
+        bool "SATA Zero Power Optical Disc Drive (ZPODD) support"
         depends on ATA_ACPI
         default n
         help
-          This option adds support for SATA ZPODD. It requires both
-          ODD and the platform support, and if enabled, will automatically
-          power on/off the ODD when certain condition is satisfied. This
-          does not impact user's experience of the ODD, only power is saved
-          when ODD is not in use(i.e. no disc inside).
+          This option adds support for SATA Zero Power Optical Disc
+          Drive (ZPODD). It requires both the ODD and the platform
+          support, and if enabled, will automatically power on/off the
+          ODD when certain condition is satisfied. This does not impact
+          end user's experience of the ODD, only power is saved when
+          the ODD is not in use (i.e. no disc inside).
 
           If unsure, say N.
 
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index a99112cfd8b1..6a67b07de494 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -281,6 +281,8 @@ static const struct pci_device_id ahci_pci_tbl[] = {
         { PCI_VDEVICE(INTEL, 0x1f37), board_ahci }, /* Avoton RAID */
         { PCI_VDEVICE(INTEL, 0x1f3e), board_ahci }, /* Avoton RAID */
         { PCI_VDEVICE(INTEL, 0x1f3f), board_ahci }, /* Avoton RAID */
+        { PCI_VDEVICE(INTEL, 0x2823), board_ahci }, /* Wellsburg RAID */
+        { PCI_VDEVICE(INTEL, 0x2827), board_ahci }, /* Wellsburg RAID */
         { PCI_VDEVICE(INTEL, 0x8d02), board_ahci }, /* Wellsburg AHCI */
         { PCI_VDEVICE(INTEL, 0x8d04), board_ahci }, /* Wellsburg RAID */
         { PCI_VDEVICE(INTEL, 0x8d06), board_ahci }, /* Wellsburg RAID */
diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index d2ba439cfe54..ffdd32d22602 100644
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -1547,6 +1547,10 @@ static bool piix_broken_system_poweroff(struct pci_dev *pdev)
 
 static int prefer_ms_hyperv = 1;
 module_param(prefer_ms_hyperv, int, 0);
+MODULE_PARM_DESC(prefer_ms_hyperv,
+        "Prefer Hyper-V paravirtualization drivers instead of ATA, "
+        "0 - Use ATA drivers, "
+        "1 (Default) - Use the paravirtualization drivers.");
 
 static void piix_ignore_devices_quirk(struct ata_host *host)
 {
diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c
index beea3115577e..8a52dab412e2 100644
--- a/drivers/ata/libata-acpi.c
+++ b/drivers/ata/libata-acpi.c
@@ -1027,7 +1027,7 @@ static void ata_acpi_register_power_resource(struct ata_device *dev)
 
         handle = ata_dev_acpi_handle(dev);
         if (handle)
-                acpi_dev_pm_remove_dependent(handle, &sdev->sdev_gendev);
+                acpi_dev_pm_add_dependent(handle, &sdev->sdev_gendev);
 }
 
 static void ata_acpi_unregister_power_resource(struct ata_device *dev)
diff --git a/drivers/ata/pata_samsung_cf.c b/drivers/ata/pata_samsung_cf.c
index 70b0e01372b3..6ef27e98c508 100644
--- a/drivers/ata/pata_samsung_cf.c
+++ b/drivers/ata/pata_samsung_cf.c
@@ -661,18 +661,7 @@ static struct platform_driver pata_s3c_driver = {
         },
 };
 
-static int __init pata_s3c_init(void)
-{
-        return platform_driver_probe(&pata_s3c_driver, pata_s3c_probe);
-}
-
-static void __exit pata_s3c_exit(void)
-{
-        platform_driver_unregister(&pata_s3c_driver);
-}
-
-module_init(pata_s3c_init);
-module_exit(pata_s3c_exit);
+module_platform_driver_probe(pata_s3c_driver, pata_s3c_probe);
 
 MODULE_AUTHOR("Abhilash Kesavan, <a.kesavan@samsung.com>");
 MODULE_DESCRIPTION("low-level driver for Samsung PATA controller");
diff --git a/drivers/ata/sata_fsl.c b/drivers/ata/sata_fsl.c
index 124b2c1d9c0b..608f82fed632 100644
--- a/drivers/ata/sata_fsl.c
+++ b/drivers/ata/sata_fsl.c
@@ -1511,8 +1511,7 @@ error_exit_with_cleanup:
 
         if (hcr_base)
                 iounmap(hcr_base);
-        if (host_priv)
-                kfree(host_priv);
+        kfree(host_priv);
 
         return retval;
 }
diff --git a/drivers/base/base.h b/drivers/base/base.h
index 6ee17bb391a9..b8bdfe61daa6 100644
--- a/drivers/base/base.h
+++ b/drivers/base/base.h
@@ -101,6 +101,8 @@ static inline int hypervisor_init(void) { return 0; }
 extern int platform_bus_init(void);
 extern void cpu_dev_init(void);
 
+struct kobject *virtual_device_parent(struct device *dev);
+
 extern int bus_add_device(struct device *dev);
 extern void bus_probe_device(struct device *dev);
 extern void bus_remove_device(struct device *dev);
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 519865b53f76..2ae2d2f92b6b 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -1205,26 +1205,10 @@ static void system_root_device_release(struct device *dev)
 {
         kfree(dev);
 }
-/**
- * subsys_system_register - register a subsystem at /sys/devices/system/
- * @subsys: system subsystem
- * @groups: default attributes for the root device
- *
- * All 'system' subsystems have a /sys/devices/system/<name> root device
- * with the name of the subsystem. The root device can carry subsystem-
- * wide attributes. All registered devices are below this single root
- * device and are named after the subsystem with a simple enumeration
- * number appended. The registered devices are not explicitely named;
- * only 'id' in the device needs to be set.
- *
- * Do not use this interface for anything new, it exists for compatibility
- * with bad ideas only. New subsystems should use plain subsystems; and
- * add the subsystem-wide attributes should be added to the subsystem
- * directory itself and not some create fake root-device placed in
- * /sys/devices/system/<name>.
- */
-int subsys_system_register(struct bus_type *subsys,
-                           const struct attribute_group **groups)
+
+static int subsys_register(struct bus_type *subsys,
+                           const struct attribute_group **groups,
+                           struct kobject *parent_of_root)
 {
         struct device *dev;
         int err;
@@ -1243,7 +1227,7 @@ int subsys_system_register(struct bus_type *subsys,
         if (err < 0)
                 goto err_name;
 
-        dev->kobj.parent = &system_kset->kobj;
+        dev->kobj.parent = parent_of_root;
         dev->groups = groups;
         dev->release = system_root_device_release;
 
@@ -1263,8 +1247,55 @@ err_dev:
         bus_unregister(subsys);
         return err;
 }
+
+/**
+ * subsys_system_register - register a subsystem at /sys/devices/system/
+ * @subsys: system subsystem
+ * @groups: default attributes for the root device
+ *
+ * All 'system' subsystems have a /sys/devices/system/<name> root device
+ * with the name of the subsystem. The root device can carry subsystem-
+ * wide attributes. All registered devices are below this single root
+ * device and are named after the subsystem with a simple enumeration
+ * number appended. The registered devices are not explicitely named;
+ * only 'id' in the device needs to be set.
+ *
+ * Do not use this interface for anything new, it exists for compatibility
+ * with bad ideas only. New subsystems should use plain subsystems; and
+ * add the subsystem-wide attributes should be added to the subsystem
+ * directory itself and not some create fake root-device placed in
+ * /sys/devices/system/<name>.
+ */
+int subsys_system_register(struct bus_type *subsys,
+                           const struct attribute_group **groups)
+{
+        return subsys_register(subsys, groups, &system_kset->kobj);
+}
 EXPORT_SYMBOL_GPL(subsys_system_register);
 
+/**
+ * subsys_virtual_register - register a subsystem at /sys/devices/virtual/
+ * @subsys: virtual subsystem
+ * @groups: default attributes for the root device
+ *
+ * All 'virtual' subsystems have a /sys/devices/system/<name> root device
+ * with the name of the subystem.  The root device can carry subsystem-wide
+ * attributes.  All registered devices are below this single root device.
+ * There's no restriction on device naming.  This is for kernel software
+ * constructs which need sysfs interface.
+ */
+int subsys_virtual_register(struct bus_type *subsys,
+                            const struct attribute_group **groups)
+{
+        struct kobject *virtual_dir;
+
+        virtual_dir = virtual_device_parent(NULL);
+        if (!virtual_dir)
+                return -ENOMEM;
+
+        return subsys_register(subsys, groups, virtual_dir);
+}
+
 int __init buses_init(void)
 {
         bus_kset = kset_create_and_add("bus", &bus_uevent_ops, NULL);
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 56536f4b0f6b..f58084a86e8c 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -690,7 +690,7 @@ void device_initialize(struct device *dev)
         set_dev_node(dev, -1);
 }
 
-static struct kobject *virtual_device_parent(struct device *dev)
+struct kobject *virtual_device_parent(struct device *dev)
 {
         static struct kobject *virtual_dir = NULL;
 
diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig
index 5dc0daed8fac..b81ddfea1da0 100644
--- a/drivers/block/Kconfig
+++ b/drivers/block/Kconfig
@@ -532,11 +532,11 @@ config BLK_DEV_RBD
           If unsure, say N.
 
 config BLK_DEV_RSXX
-        tristate "RamSam PCIe Flash SSD Device Driver"
+        tristate "IBM FlashSystem 70/80 PCIe SSD Device Driver"
         depends on PCI
         help
           Device driver for IBM's high speed PCIe SSD
-          storage devices: RamSan-70 and RamSan-80.
+          storage devices: FlashSystem-70 and FlashSystem-80.
 
           To compile this driver as a module, choose M here: the
           module will be called rsxx.
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index ade58bc8f3c4..1c1b8e544aa2 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -4206,7 +4206,7 @@ static int cciss_find_cfgtables(ctlr_info_t *h)
         if (rc)
                 return rc;
         h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev,
-                cfg_base_addr_index) + cfg_offset, sizeof(h->cfgtable));
+                cfg_base_addr_index) + cfg_offset, sizeof(*h->cfgtable));
         if (!h->cfgtable)
                 return -ENOMEM;
         rc = write_driver_ver_to_cfgtable(h->cfgtable);
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 747bb2af69dc..fe5f6403417f 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -1044,12 +1044,29 @@ static int loop_clr_fd(struct loop_device *lo)
         lo->lo_state = Lo_unbound;
         /* This is safe: open() is still holding a reference. */
         module_put(THIS_MODULE);
-        if (lo->lo_flags & LO_FLAGS_PARTSCAN && bdev)
-                ioctl_by_bdev(bdev, BLKRRPART, 0);
         lo->lo_flags = 0;
         if (!part_shift)
                 lo->lo_disk->flags |= GENHD_FL_NO_PART_SCAN;
         mutex_unlock(&lo->lo_ctl_mutex);
+
+        /*
+         * Remove all partitions, since BLKRRPART won't remove user
+         * added partitions when max_part=0
+         */
+        if (bdev) {
+                struct disk_part_iter piter;
+                struct hd_struct *part;
+
+                mutex_lock_nested(&bdev->bd_mutex, 1);
+                invalidate_partition(bdev->bd_disk, 0);
+                disk_part_iter_init(&piter, bdev->bd_disk,
+                                        DISK_PITER_INCL_EMPTY);
+                while ((part = disk_part_iter_next(&piter)))
+                        delete_partition(bdev->bd_disk, part->partno);
+                disk_part_iter_exit(&piter);
+                mutex_unlock(&bdev->bd_mutex);
+        }
+
         /*
          * Need not hold lo_ctl_mutex to fput backing file.
          * Calling fput holding lo_ctl_mutex triggers a circular
@@ -1623,6 +1640,7 @@ static int loop_add(struct loop_device **l, int i)
                 goto out_free_dev;
         i = err;
 
+        err = -ENOMEM;
         lo->lo_queue = blk_alloc_queue(GFP_KERNEL);
         if (!lo->lo_queue)
                 goto out_free_dev;
diff --git a/drivers/block/mg_disk.c b/drivers/block/mg_disk.c
index 1788f491e0fb..076ae7f1b781 100644
--- a/drivers/block/mg_disk.c
+++ b/drivers/block/mg_disk.c
@@ -890,8 +890,10 @@ static int mg_probe(struct platform_device *plat_dev)
         gpio_direction_output(host->rst, 1);
 
         /* reset out pin */
-        if (!(prv_data->dev_attr & MG_DEV_MASK))
+        if (!(prv_data->dev_attr & MG_DEV_MASK)) {
+                err = -EINVAL;
                 goto probe_err_3a;
+        }
 
         if (prv_data->dev_attr != MG_BOOT_DEV) {
                 rsc = platform_get_resource_byname(plat_dev, IORESOURCE_IO,
diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c
index 11cc9522cdd4..92250af84e7d 100644
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -4224,6 +4224,7 @@ static int mtip_pci_probe(struct pci_dev *pdev,
         dd->isr_workq = create_workqueue(dd->workq_name);
         if (!dd->isr_workq) {
                 dev_warn(&pdev->dev, "Can't create wq %d\n", dd->instance);
+                rv = -ENOMEM;
                 goto block_initialize_err;
         }
 
@@ -4282,7 +4283,8 @@ static int mtip_pci_probe(struct pci_dev *pdev,
         INIT_WORK(&dd->work[7].work, mtip_workq_sdbf7);
 
         pci_set_master(pdev);
-        if (pci_enable_msi(pdev)) {
+        rv = pci_enable_msi(pdev);
+        if (rv) {
                 dev_warn(&pdev->dev,
                         "Unable to enable MSI interrupt.\n");
                 goto block_initialize_err;
diff --git a/drivers/block/nvme.c b/drivers/block/nvme.c
index 07fb2dfaae13..9dcefe40380b 100644
--- a/drivers/block/nvme.c
+++ b/drivers/block/nvme.c
@@ -135,6 +135,7 @@ static inline void _nvme_check_size(void)
         BUILD_BUG_ON(sizeof(struct nvme_id_ctrl) != 4096);
         BUILD_BUG_ON(sizeof(struct nvme_id_ns) != 4096);
         BUILD_BUG_ON(sizeof(struct nvme_lba_range_type) != 64);
+        BUILD_BUG_ON(sizeof(struct nvme_smart_log) != 512);
 }
 
 typedef void (*nvme_completion_fn)(struct nvme_dev *, void *,
@@ -237,7 +238,8 @@ static void *free_cmdid(struct nvme_queue *nvmeq, int cmdid,
                 *fn = special_completion;
                 return CMD_CTX_INVALID;
         }
-        *fn = info[cmdid].fn;
+        if (fn)
+                *fn = info[cmdid].fn;
         ctx = info[cmdid].ctx;
         info[cmdid].fn = special_completion;
         info[cmdid].ctx = CMD_CTX_COMPLETED;
@@ -335,6 +337,7 @@ nvme_alloc_iod(unsigned nseg, unsigned nbytes, gfp_t gfp)
                 iod->offset = offsetof(struct nvme_iod, sg[nseg]);
                 iod->npages = -1;
                 iod->length = nbytes;
+                iod->nents = 0;
         }
 
         return iod;
@@ -375,7 +378,8 @@ static void bio_completion(struct nvme_dev *dev, void *ctx,
         struct bio *bio = iod->private;
         u16 status = le16_to_cpup(&cqe->status) >> 1;
 
-        dma_unmap_sg(&dev->pci_dev->dev, iod->sg, iod->nents,
+        if (iod->nents)
+                dma_unmap_sg(&dev->pci_dev->dev, iod->sg, iod->nents,
                         bio_data_dir(bio) ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
         nvme_free_iod(dev, iod);
         if (status) {
@@ -589,7 +593,7 @@ static int nvme_submit_bio_queue(struct nvme_queue *nvmeq, struct nvme_ns *ns,
 
         result = nvme_map_bio(nvmeq->q_dmadev, iod, bio, dma_dir, psegs);
         if (result < 0)
-                goto free_iod;
+                goto free_cmdid;
         length = result;
 
         cmnd->rw.command_id = cmdid;
@@ -609,6 +613,8 @@ static int nvme_submit_bio_queue(struct nvme_queue *nvmeq, struct nvme_ns *ns,
 
         return 0;
 
+ free_cmdid:
+        free_cmdid(nvmeq, cmdid, NULL);
  free_iod:
         nvme_free_iod(nvmeq->dev, iod);
  nomem:
@@ -835,8 +841,8 @@ static int nvme_identify(struct nvme_dev *dev, unsigned nsid, unsigned cns,
         return nvme_submit_admin_cmd(dev, &c, NULL);
 }
 
-static int nvme_get_features(struct nvme_dev *dev, unsigned fid,
-                                unsigned nsid, dma_addr_t dma_addr)
+static int nvme_get_features(struct nvme_dev *dev, unsigned fid, unsigned nsid,
+                                        dma_addr_t dma_addr, u32 *result)
 {
         struct nvme_command c;
 
@@ -846,7 +852,7 @@ static int nvme_get_features(struct nvme_dev *dev, unsigned fid,
         c.features.prp1 = cpu_to_le64(dma_addr);
         c.features.fid = cpu_to_le32(fid);
 
-        return nvme_submit_admin_cmd(dev, &c, NULL);
+        return nvme_submit_admin_cmd(dev, &c, result);
 }
 
 static int nvme_set_features(struct nvme_dev *dev, unsigned fid,
@@ -906,6 +912,10 @@ static void nvme_free_queue(struct nvme_dev *dev, int qid)
 
         spin_lock_irq(&nvmeq->q_lock);
         nvme_cancel_ios(nvmeq, false);
+        while (bio_list_peek(&nvmeq->sq_cong)) {
+                struct bio *bio = bio_list_pop(&nvmeq->sq_cong);
+                bio_endio(bio, -EIO);
+        }
         spin_unlock_irq(&nvmeq->q_lock);
 
         irq_set_affinity_hint(vector, NULL);
@@ -1230,12 +1240,17 @@ static int nvme_user_admin_cmd(struct nvme_dev *dev,
         if (length != cmd.data_len)
                 status = -ENOMEM;
         else
-                status = nvme_submit_admin_cmd(dev, &c, NULL);
+                status = nvme_submit_admin_cmd(dev, &c, &cmd.result);
 
         if (cmd.data_len) {
                 nvme_unmap_user_pages(dev, cmd.opcode & 1, iod);
                 nvme_free_iod(dev, iod);
         }
+
+        if (!status && copy_to_user(&ucmd->result, &cmd.result,
+                                                        sizeof(cmd.result)))
+                status = -EFAULT;
+
         return status;
 }
 
@@ -1523,9 +1538,9 @@ static int nvme_dev_add(struct nvme_dev *dev)
                         continue;
 
                 res = nvme_get_features(dev, NVME_FEAT_LBA_RANGE, i,
-                                                        dma_addr + 4096);
+                                                        dma_addr + 4096, NULL);
                 if (res)
-                        continue;
+                        memset(mem + 4096, 0, 4096);
 
                 ns = nvme_alloc_ns(dev, i, mem, mem + 4096);
                 if (ns)
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 11e179826b60..6b2b039c191f 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -1264,6 +1264,32 @@ static bool obj_request_done_test(struct rbd_obj_request *obj_request)
         return atomic_read(&obj_request->done) != 0;
 }
 
+static void
+rbd_img_obj_request_read_callback(struct rbd_obj_request *obj_request)
+{
+        dout("%s: obj %p img %p result %d %llu/%llu\n", __func__,
+                obj_request, obj_request->img_request, obj_request->result,
+                obj_request->xferred, obj_request->length);
+        /*
+         * ENOENT means a hole in the image.  We zero-fill the
+         * entire length of the request.  A short read also implies
+         * zero-fill to the end of the request.  Either way we
+         * update the xferred count to indicate the whole request
+         * was satisfied.
+         */
+        BUG_ON(obj_request->type != OBJ_REQUEST_BIO);
+        if (obj_request->result == -ENOENT) {
+                zero_bio_chain(obj_request->bio_list, 0);
+                obj_request->result = 0;
+                obj_request->xferred = obj_request->length;
+        } else if (obj_request->xferred < obj_request->length &&
+                        !obj_request->result) {
+                zero_bio_chain(obj_request->bio_list, obj_request->xferred);
+                obj_request->xferred = obj_request->length;
+        }
+        obj_request_done_set(obj_request);
+}
+
 static void rbd_obj_request_complete(struct rbd_obj_request *obj_request)
 {
         dout("%s: obj %p cb %p\n", __func__, obj_request,
@@ -1284,23 +1310,10 @@ static void rbd_osd_read_callback(struct rbd_obj_request *obj_request)
 {
         dout("%s: obj %p result %d %llu/%llu\n", __func__, obj_request,
                 obj_request->result, obj_request->xferred, obj_request->length);
-        /*
-         * ENOENT means a hole in the object.  We zero-fill the
-         * entire length of the request.  A short read also implies
-         * zero-fill to the end of the request.  Either way we
-         * update the xferred count to indicate the whole request
-         * was satisfied.
-         */
-        if (obj_request->result == -ENOENT) {
-                zero_bio_chain(obj_request->bio_list, 0);
-                obj_request->result = 0;
-                obj_request->xferred = obj_request->length;
-        } else if (obj_request->xferred < obj_request->length &&
-                        !obj_request->result) {
-                zero_bio_chain(obj_request->bio_list, obj_request->xferred);
-                obj_request->xferred = obj_request->length;
-        }
-        obj_request_done_set(obj_request);
+        if (obj_request->img_request)
+                rbd_img_obj_request_read_callback(obj_request);
+        else
+                obj_request_done_set(obj_request);
 }
 
 static void rbd_osd_write_callback(struct rbd_obj_request *obj_request)
diff --git a/drivers/block/rsxx/Makefile b/drivers/block/rsxx/Makefile
index f35cd0b71f7b..b1c53c0aa450 100644
--- a/drivers/block/rsxx/Makefile
+++ b/drivers/block/rsxx/Makefile
@@ -1,2 +1,2 @@
 obj-$(CONFIG_BLK_DEV_RSXX) += rsxx.o
-rsxx-y := config.o core.o cregs.o dev.o dma.o
+rsxx-objs := config.o core.o cregs.o dev.o dma.o
diff --git a/drivers/block/rsxx/config.c b/drivers/block/rsxx/config.c
index a295e7e9ee41..10cd530d3e10 100644
--- a/drivers/block/rsxx/config.c
+++ b/drivers/block/rsxx/config.c
@@ -29,15 +29,13 @@
 #include "rsxx_priv.h"
 #include "rsxx_cfg.h"
 
-static void initialize_config(void *config)
+static void initialize_config(struct rsxx_card_cfg *cfg)
 {
-        struct rsxx_card_cfg *cfg = config;
-
         cfg->hdr.version = RSXX_CFG_VERSION;
 
         cfg->data.block_size        = RSXX_HW_BLK_SIZE;
         cfg->data.stripe_size       = RSXX_HW_BLK_SIZE;
-        cfg->data.vendor_id         = RSXX_VENDOR_ID_TMS_IBM;
+        cfg->data.vendor_id         = RSXX_VENDOR_ID_IBM;
         cfg->data.cache_order       = (-1);
         cfg->data.intr_coal.mode    = RSXX_INTR_COAL_DISABLED;
         cfg->data.intr_coal.count   = 0;
@@ -181,7 +179,7 @@ int rsxx_load_config(struct rsxx_cardinfo *card)
         } else {
                 dev_info(CARD_TO_DEV(card),
                         "Initializing card configuration.\n");
-                initialize_config(card);
+                initialize_config(&card->config);
                 st = rsxx_save_config(card);
                 if (st)
                         return st;
diff --git a/drivers/block/rsxx/core.c b/drivers/block/rsxx/core.c
index e5162487686a..5af21f2db29c 100644
--- a/drivers/block/rsxx/core.c
+++ b/drivers/block/rsxx/core.c
@@ -30,6 +30,7 @@
 #include <linux/reboot.h>
 #include <linux/slab.h>
 #include <linux/bitops.h>
+#include <linux/delay.h>
 
 #include <linux/genhd.h>
 #include <linux/idr.h>
@@ -39,8 +40,8 @@
 
 #define NO_LEGACY 0
 
-MODULE_DESCRIPTION("IBM RamSan PCIe Flash SSD Device Driver");
-MODULE_AUTHOR("IBM <support@ramsan.com>");
+MODULE_DESCRIPTION("IBM FlashSystem 70/80 PCIe SSD Device Driver");
+MODULE_AUTHOR("Joshua Morris/Philip Kelleher, IBM");
 MODULE_LICENSE("GPL");
 MODULE_VERSION(DRIVER_VERSION);
 
@@ -52,6 +53,13 @@ static DEFINE_IDA(rsxx_disk_ida);
 static DEFINE_SPINLOCK(rsxx_ida_lock);
 
 /*----------------- Interrupt Control & Handling -------------------*/
+
+static void rsxx_mask_interrupts(struct rsxx_cardinfo *card)
+{
+        card->isr_mask = 0;
+        card->ier_mask = 0;
+}
+
 static void __enable_intr(unsigned int *mask, unsigned int intr)
 {
         *mask |= intr;
@@ -71,7 +79,8 @@ static void __disable_intr(unsigned int *mask, unsigned int intr)
  */
 void rsxx_enable_ier(struct rsxx_cardinfo *card, unsigned int intr)
 {
-        if (unlikely(card->halt))
+        if (unlikely(card->halt) ||
+            unlikely(card->eeh_state))
                 return;
 
         __enable_intr(&card->ier_mask, intr);
@@ -80,6 +89,9 @@ void rsxx_enable_ier(struct rsxx_cardinfo *card, unsigned int intr)
 
 void rsxx_disable_ier(struct rsxx_cardinfo *card, unsigned int intr)
 {
+        if (unlikely(card->eeh_state))
+                return;
+
         __disable_intr(&card->ier_mask, intr);
         iowrite32(card->ier_mask, card->regmap + IER);
 }
@@ -87,7 +99,8 @@ void rsxx_disable_ier(struct rsxx_cardinfo *card, unsigned int intr)
 void rsxx_enable_ier_and_isr(struct rsxx_cardinfo *card,
                                  unsigned int intr)
 {
-        if (unlikely(card->halt))
+        if (unlikely(card->halt) ||
+            unlikely(card->eeh_state))
                 return;
 
         __enable_intr(&card->isr_mask, intr);
@@ -97,6 +110,9 @@ void rsxx_enable_ier_and_isr(struct rsxx_cardinfo *card,
 void rsxx_disable_ier_and_isr(struct rsxx_cardinfo *card,
                                   unsigned int intr)
 {
+        if (unlikely(card->eeh_state))
+                return;
+
         __disable_intr(&card->isr_mask, intr);
         __disable_intr(&card->ier_mask, intr);
         iowrite32(card->ier_mask, card->regmap + IER);
@@ -115,6 +131,9 @@ static irqreturn_t rsxx_isr(int irq, void *pdata)
         do {
                 reread_isr = 0;
 
+                if (unlikely(card->eeh_state))
+                        break;
+
                 isr = ioread32(card->regmap + ISR);
                 if (isr == 0xffffffff) {
                         /*
@@ -161,9 +180,9 @@ static irqreturn_t rsxx_isr(int irq, void *pdata)
 }
 
 /*----------------- Card Event Handler -------------------*/
-static char *rsxx_card_state_to_str(unsigned int state)
+static const char * const rsxx_card_state_to_str(unsigned int state)
 {
-        static char *state_strings[] = {
+        static const char * const state_strings[] = {
                 "Unknown", "Shutdown", "Starting", "Formatting",
                 "Uninitialized", "Good", "Shutting Down",
                 "Fault", "Read Only Fault", "dStroying"
@@ -304,6 +323,192 @@ static int card_shutdown(struct rsxx_cardinfo *card)
         return 0;
 }
 
+static int rsxx_eeh_frozen(struct pci_dev *dev)
+{
+        struct rsxx_cardinfo *card = pci_get_drvdata(dev);
+        int i;
+        int st;
+
+        dev_warn(&dev->dev, "IBM FlashSystem PCI: preparing for slot reset.\n");
+
+        card->eeh_state = 1;
+        rsxx_mask_interrupts(card);
+
+        /*
+         * We need to guarantee that the write for eeh_state and masking
+         * interrupts does not become reordered. This will prevent a possible
+         * race condition with the EEH code.
+         */
+        wmb();
+
+        pci_disable_device(dev);
+
+        st = rsxx_eeh_save_issued_dmas(card);
+        if (st)
+                return st;
+
+        rsxx_eeh_save_issued_creg(card);
+
+        for (i = 0; i < card->n_targets; i++) {
+                if (card->ctrl[i].status.buf)
+                        pci_free_consistent(card->dev, STATUS_BUFFER_SIZE8,
+                                            card->ctrl[i].status.buf,
+                                            card->ctrl[i].status.dma_addr);
+                if (card->ctrl[i].cmd.buf)
+                        pci_free_consistent(card->dev, COMMAND_BUFFER_SIZE8,
+                                            card->ctrl[i].cmd.buf,
+                                            card->ctrl[i].cmd.dma_addr);
+        }
+
+        return 0;
+}
+
+static void rsxx_eeh_failure(struct pci_dev *dev)
+{
+        struct rsxx_cardinfo *card = pci_get_drvdata(dev);
+        int i;
+
+        dev_err(&dev->dev, "IBM FlashSystem PCI: disabling failed card.\n");
+
+        card->eeh_state = 1;
+
+        for (i = 0; i < card->n_targets; i++)
+                del_timer_sync(&card->ctrl[i].activity_timer);
+
+        rsxx_eeh_cancel_dmas(card);
+}
+
+static int rsxx_eeh_fifo_flush_poll(struct rsxx_cardinfo *card)
+{
+        unsigned int status;
+        int iter = 0;
+
+        /* We need to wait for the hardware to reset */
+        while (iter++ < 10) {
+                status = ioread32(card->regmap + PCI_RECONFIG);
+
+                if (status & RSXX_FLUSH_BUSY) {
+                        ssleep(1);
+                        continue;
+                }
+
+                if (status & RSXX_FLUSH_TIMEOUT)
+                        dev_warn(CARD_TO_DEV(card), "HW: flash controller timeout\n");
+                return 0;
+        }
+
+        /* Hardware failed resetting itself. */
+        return -1;
+}
+
+static pci_ers_result_t rsxx_error_detected(struct pci_dev *dev,
+                                            enum pci_channel_state error)
+{
+        int st;
+
+        if (dev->revision < RSXX_EEH_SUPPORT)
+                return PCI_ERS_RESULT_NONE;
+
+        if (error == pci_channel_io_perm_failure) {
+                rsxx_eeh_failure(dev);
+                return PCI_ERS_RESULT_DISCONNECT;
+        }
+
+        st = rsxx_eeh_frozen(dev);
+        if (st) {
+                dev_err(&dev->dev, "Slot reset setup failed\n");
+                rsxx_eeh_failure(dev);
+                return PCI_ERS_RESULT_DISCONNECT;
+        }
+
+        return PCI_ERS_RESULT_NEED_RESET;
+}
+
+static pci_ers_result_t rsxx_slot_reset(struct pci_dev *dev)
+{
+        struct rsxx_cardinfo *card = pci_get_drvdata(dev);
+        unsigned long flags;
+        int i;
+        int st;
+
+        dev_warn(&dev->dev,
+                "IBM FlashSystem PCI: recovering from slot reset.\n");
+
+        st = pci_enable_device(dev);
+        if (st)
+                goto failed_hw_setup;
+
+        pci_set_master(dev);
+
+        st = rsxx_eeh_fifo_flush_poll(card);
+        if (st)
+                goto failed_hw_setup;
+
+        rsxx_dma_queue_reset(card);
+
+        for (i = 0; i < card->n_targets; i++) {
+                st = rsxx_hw_buffers_init(dev, &card->ctrl[i]);
+                if (st)
+                        goto failed_hw_buffers_init;
+        }
+
+        if (card->config_valid)
+                rsxx_dma_configure(card);
+
+        /* Clears the ISR register from spurious interrupts */
+        st = ioread32(card->regmap + ISR);
+
+        card->eeh_state = 0;
+
+        st = rsxx_eeh_remap_dmas(card);
+        if (st)
+                goto failed_remap_dmas;
+
+        spin_lock_irqsave(&card->irq_lock, flags);
+        if (card->n_targets & RSXX_MAX_TARGETS)
+                rsxx_enable_ier_and_isr(card, CR_INTR_ALL_G);
+        else
+                rsxx_enable_ier_and_isr(card, CR_INTR_ALL_C);
+        spin_unlock_irqrestore(&card->irq_lock, flags);
+
+        rsxx_kick_creg_queue(card);
+
+        for (i = 0; i < card->n_targets; i++) {
+                spin_lock(&card->ctrl[i].queue_lock);
+                if (list_empty(&card->ctrl[i].queue)) {
+                        spin_unlock(&card->ctrl[i].queue_lock);
+                        continue;
+                }
+                spin_unlock(&card->ctrl[i].queue_lock);
+
+                queue_work(card->ctrl[i].issue_wq,
+                                &card->ctrl[i].issue_dma_work);
+        }
+
+        dev_info(&dev->dev, "IBM FlashSystem PCI: recovery complete.\n");
+
+        return PCI_ERS_RESULT_RECOVERED;
+
+failed_hw_buffers_init:
+failed_remap_dmas:
+        for (i = 0; i < card->n_targets; i++) {
+                if (card->ctrl[i].status.buf)
+                        pci_free_consistent(card->dev,
+                                        STATUS_BUFFER_SIZE8,
+                                        card->ctrl[i].status.buf,
+                                        card->ctrl[i].status.dma_addr);
+                if (card->ctrl[i].cmd.buf)
+                        pci_free_consistent(card->dev,
+                                        COMMAND_BUFFER_SIZE8,
+                                        card->ctrl[i].cmd.buf,
+                                        card->ctrl[i].cmd.dma_addr);
+        }
+failed_hw_setup:
+        rsxx_eeh_failure(dev);
+        return PCI_ERS_RESULT_DISCONNECT;
+
+}
+
 /*----------------- Driver Initialization & Setup -------------------*/
 /* Returns:   0 if the driver is compatible with the device
              -1 if the driver is NOT compatible with the device */
@@ -383,6 +588,7 @@ static int rsxx_pci_probe(struct pci_dev *dev,
 
         spin_lock_init(&card->irq_lock);
         card->halt = 0;
+        card->eeh_state = 0;
 
         spin_lock_irq(&card->irq_lock);
         rsxx_disable_ier_and_isr(card, CR_INTR_ALL);
@@ -538,9 +744,6 @@ static void rsxx_pci_remove(struct pci_dev *dev)
         rsxx_disable_ier_and_isr(card, CR_INTR_EVENT);
         spin_unlock_irqrestore(&card->irq_lock, flags);
 
-        /* Prevent work_structs from re-queuing themselves. */
-        card->halt = 1;
-
         cancel_work_sync(&card->event_work);
 
         rsxx_destroy_dev(card);
@@ -549,6 +752,10 @@ static void rsxx_pci_remove(struct pci_dev *dev)
         spin_lock_irqsave(&card->irq_lock, flags);
         rsxx_disable_ier_and_isr(card, CR_INTR_ALL);
         spin_unlock_irqrestore(&card->irq_lock, flags);
+
+        /* Prevent work_structs from re-queuing themselves. */
+        card->halt = 1;
+
         free_irq(dev->irq, card);
 
         if (!force_legacy)
@@ -592,11 +799,14 @@ static void rsxx_pci_shutdown(struct pci_dev *dev)
         card_shutdown(card);
 }
 
+static const struct pci_error_handlers rsxx_err_handler = {
+        .error_detected = rsxx_error_detected,
+        .slot_reset     = rsxx_slot_reset,
+};
+
 static DEFINE_PCI_DEVICE_TABLE(rsxx_pci_ids) = {
-        {PCI_DEVICE(PCI_VENDOR_ID_TMS_IBM, PCI_DEVICE_ID_RS70_FLASH)},
-        {PCI_DEVICE(PCI_VENDOR_ID_TMS_IBM, PCI_DEVICE_ID_RS70D_FLASH)},
-        {PCI_DEVICE(PCI_VENDOR_ID_TMS_IBM, PCI_DEVICE_ID_RS80_FLASH)},
-        {PCI_DEVICE(PCI_VENDOR_ID_TMS_IBM, PCI_DEVICE_ID_RS81_FLASH)},
+        {PCI_DEVICE(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_FS70_FLASH)},
+        {PCI_DEVICE(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_FS80_FLASH)},
         {0,},
 };
 
@@ -609,6 +819,7 @@ static struct pci_driver rsxx_pci_driver = {
         .remove         = rsxx_pci_remove,
         .suspend        = rsxx_pci_suspend,
         .shutdown       = rsxx_pci_shutdown,
+        .err_handler    = &rsxx_err_handler,
 };
 
 static int __init rsxx_core_init(void)
diff --git a/drivers/block/rsxx/cregs.c b/drivers/block/rsxx/cregs.c
index 80bbe639fccd..4b5c020a0a65 100644
--- a/drivers/block/rsxx/cregs.c
+++ b/drivers/block/rsxx/cregs.c
@@ -58,7 +58,7 @@ static struct kmem_cache *creg_cmd_pool;
 #error Unknown endianess!!! Aborting...
 #endif
 
-static void copy_to_creg_data(struct rsxx_cardinfo *card,
+static int copy_to_creg_data(struct rsxx_cardinfo *card,
                               int cnt8,
                               void *buf,
                               unsigned int stream)
@@ -66,6 +66,9 @@ static void copy_to_creg_data(struct rsxx_cardinfo *card,
         int i = 0;
         u32 *data = buf;
 
+        if (unlikely(card->eeh_state))
+                return -EIO;
+
         for (i = 0; cnt8 > 0; i++, cnt8 -= 4) {
                 /*
                  * Firmware implementation makes it necessary to byte swap on
@@ -76,10 +79,12 @@ static void copy_to_creg_data(struct rsxx_cardinfo *card,
                 else
                         iowrite32(data[i], card->regmap + CREG_DATA(i));
         }
+
+        return 0;
 }
 
 
-static void copy_from_creg_data(struct rsxx_cardinfo *card,
+static int copy_from_creg_data(struct rsxx_cardinfo *card,
                                 int cnt8,
                                 void *buf,
                                 unsigned int stream)
@@ -87,6 +92,9 @@ static void copy_from_creg_data(struct rsxx_cardinfo *card,
         int i = 0;
         u32 *data = buf;
 
+        if (unlikely(card->eeh_state))
+                return -EIO;
+
         for (i = 0; cnt8 > 0; i++, cnt8 -= 4) {
                 /*
                  * Firmware implementation makes it necessary to byte swap on
@@ -97,41 +105,31 @@ static void copy_from_creg_data(struct rsxx_cardinfo *card,
                 else
                         data[i] = ioread32(card->regmap + CREG_DATA(i));
         }
-}
-
-static struct creg_cmd *pop_active_cmd(struct rsxx_cardinfo *card)
-{
-        struct creg_cmd *cmd;
 
-        /*
-         * Spin lock is needed because this can be called in atomic/interrupt
-         * context.
-         */
-        spin_lock_bh(&card->creg_ctrl.lock);
-        cmd = card->creg_ctrl.active_cmd;
-        card->creg_ctrl.active_cmd = NULL;
-        spin_unlock_bh(&card->creg_ctrl.lock);
-
-        return cmd;
+        return 0;
 }
 
 static void creg_issue_cmd(struct rsxx_cardinfo *card, struct creg_cmd *cmd)
 {
+        int st;
+
+        if (unlikely(card->eeh_state))
+                return;
+
         iowrite32(cmd->addr, card->regmap + CREG_ADD);
         iowrite32(cmd->cnt8, card->regmap + CREG_CNT);
 
         if (cmd->op == CREG_OP_WRITE) {
-                if (cmd->buf)
-                        copy_to_creg_data(card, cmd->cnt8,
-                                          cmd->buf, cmd->stream);
+                if (cmd->buf) {
+                        st = copy_to_creg_data(card, cmd->cnt8,
+                                               cmd->buf, cmd->stream);
+                        if (st)
+                                return;
+                }
         }
 
-        /*
-         * Data copy must complete before initiating the command. This is
-         * needed for weakly ordered processors (i.e. PowerPC), so that all
-         * neccessary registers are written before we kick the hardware.
-         */
-        wmb();
+        if (unlikely(card->eeh_state))
+                return;
 
         /* Setting the valid bit will kick off the command. */
         iowrite32(cmd->op, card->regmap + CREG_CMD);
@@ -196,11 +194,11 @@ static int creg_queue_cmd(struct rsxx_cardinfo *card,
         cmd->cb_private = cb_private;
         cmd->status     = 0;
 
-        spin_lock(&card->creg_ctrl.lock);
+        spin_lock_bh(&card->creg_ctrl.lock);
         list_add_tail(&cmd->list, &card->creg_ctrl.queue);
         card->creg_ctrl.q_depth++;
         creg_kick_queue(card);
-        spin_unlock(&card->creg_ctrl.lock);
+        spin_unlock_bh(&card->creg_ctrl.lock);
 
         return 0;
 }
@@ -210,7 +208,11 @@ static void creg_cmd_timed_out(unsigned long data)
         struct rsxx_cardinfo *card = (struct rsxx_cardinfo *) data;
         struct creg_cmd *cmd;
 
-        cmd = pop_active_cmd(card);
+        spin_lock(&card->creg_ctrl.lock);
+        cmd = card->creg_ctrl.active_cmd;
+        card->creg_ctrl.active_cmd = NULL;
+        spin_unlock(&card->creg_ctrl.lock);
+
         if (cmd == NULL) {
                 card->creg_ctrl.creg_stats.creg_timeout++;
                 dev_warn(CARD_TO_DEV(card),
@@ -247,7 +249,11 @@ static void creg_cmd_done(struct work_struct *work)
         if (del_timer_sync(&card->creg_ctrl.cmd_timer) == 0)
                 card->creg_ctrl.creg_stats.failed_cancel_timer++;
 
-        cmd = pop_active_cmd(card);
+        spin_lock_bh(&card->creg_ctrl.lock);
+        cmd = card->creg_ctrl.active_cmd;
+        card->creg_ctrl.active_cmd = NULL;
+        spin_unlock_bh(&card->creg_ctrl.lock);
+
         if (cmd == NULL) {
                 dev_err(CARD_TO_DEV(card),
                         "Spurious creg interrupt!\n");
@@ -287,7 +293,7 @@ static void creg_cmd_done(struct work_struct *work)
                         goto creg_done;
                 }
 
-                copy_from_creg_data(card, cnt8, cmd->buf, cmd->stream);
+                st = copy_from_creg_data(card, cnt8, cmd->buf, cmd->stream);
         }
 
 creg_done:
@@ -296,10 +302,10 @@ creg_done:
 
         kmem_cache_free(creg_cmd_pool, cmd);
 
-        spin_lock(&card->creg_ctrl.lock);
+        spin_lock_bh(&card->creg_ctrl.lock);
         card->creg_ctrl.active = 0;
         creg_kick_queue(card);
-        spin_unlock(&card->creg_ctrl.lock);
+        spin_unlock_bh(&card->creg_ctrl.lock);
 }
 
 static void creg_reset(struct rsxx_cardinfo *card)
@@ -324,7 +330,7 @@ static void creg_reset(struct rsxx_cardinfo *card)
                 "Resetting creg interface for recovery\n");
 
         /* Cancel outstanding commands */
-        spin_lock(&card->creg_ctrl.lock);
+        spin_lock_bh(&card->creg_ctrl.lock);
         list_for_each_entry_safe(cmd, tmp, &card->creg_ctrl.queue, list) {
                 list_del(&cmd->list);
                 card->creg_ctrl.q_depth--;
@@ -345,7 +351,7 @@ static void creg_reset(struct rsxx_cardinfo *card)
 
                 card->creg_ctrl.active = 0;
         }
-        spin_unlock(&card->creg_ctrl.lock);
+        spin_unlock_bh(&card->creg_ctrl.lock);
 
         card->creg_ctrl.reset = 0;
         spin_lock_irqsave(&card->irq_lock, flags);
@@ -399,12 +405,12 @@ static int __issue_creg_rw(struct rsxx_cardinfo *card,
                 return st;
 
         /*
-         * This timeout is neccessary for unresponsive hardware. The additional
+         * This timeout is necessary for unresponsive hardware. The additional
          * 20 seconds to used to guarantee that each cregs requests has time to
          * complete.
          */
-        timeout = msecs_to_jiffies((CREG_TIMEOUT_MSEC *
-                                card->creg_ctrl.q_depth) + 20000);
+        timeout = msecs_to_jiffies(CREG_TIMEOUT_MSEC *
+                                   card->creg_ctrl.q_depth + 20000);
 
         /*
          * The creg interface is guaranteed to complete. It has a timeout
@@ -690,6 +696,32 @@ int rsxx_reg_access(struct rsxx_cardinfo *card,
         return 0;
 }
 
+void rsxx_eeh_save_issued_creg(struct rsxx_cardinfo *card)
+{
+        struct creg_cmd *cmd = NULL;
+
+        cmd = card->creg_ctrl.active_cmd;
+        card->creg_ctrl.active_cmd = NULL;
+
+        if (cmd) {
+                del_timer_sync(&card->creg_ctrl.cmd_timer);
+
+                spin_lock_bh(&card->creg_ctrl.lock);
+                list_add(&cmd->list, &card->creg_ctrl.queue);
+                card->creg_ctrl.q_depth++;
+                card->creg_ctrl.active = 0;
+                spin_unlock_bh(&card->creg_ctrl.lock);
+        }
+}
+
+void rsxx_kick_creg_queue(struct rsxx_cardinfo *card)
+{
+        spin_lock_bh(&card->creg_ctrl.lock);
+        if (!list_empty(&card->creg_ctrl.queue))
+                creg_kick_queue(card);
+        spin_unlock_bh(&card->creg_ctrl.lock);
+}
+
 /*------------ Initialization & Setup --------------*/
 int rsxx_creg_setup(struct rsxx_cardinfo *card)
 {
@@ -712,7 +744,7 @@ void rsxx_creg_destroy(struct rsxx_cardinfo *card)
         int cnt = 0;
 
         /* Cancel outstanding commands */
-        spin_lock(&card->creg_ctrl.lock);
+        spin_lock_bh(&card->creg_ctrl.lock);
         list_for_each_entry_safe(cmd, tmp, &card->creg_ctrl.queue, list) {
                 list_del(&cmd->list);
                 if (cmd->cb)
@@ -737,7 +769,7 @@ void rsxx_creg_destroy(struct rsxx_cardinfo *card)
                         "Canceled active creg command\n");
                 kmem_cache_free(creg_cmd_pool, cmd);
         }
-        spin_unlock(&card->creg_ctrl.lock);
+        spin_unlock_bh(&card->creg_ctrl.lock);
 
         cancel_work_sync(&card->creg_ctrl.done_work);
 }
diff --git a/drivers/block/rsxx/dma.c b/drivers/block/rsxx/dma.c
index 63176e67662f..0607513cfb41 100644
--- a/drivers/block/rsxx/dma.c
+++ b/drivers/block/rsxx/dma.c
@@ -28,7 +28,7 @@
 struct rsxx_dma {
         struct list_head         list;
         u8                       cmd;
-        unsigned int             laddr;     /* Logical address on the ramsan */
+        unsigned int             laddr;     /* Logical address */
         struct {
                 u32              off;
                 u32              cnt;
@@ -81,9 +81,6 @@ enum rsxx_hw_status {
         HW_STATUS_FAULT         = 0x08,
 };
 
-#define STATUS_BUFFER_SIZE8     4096
-#define COMMAND_BUFFER_SIZE8    4096
-
 static struct kmem_cache *rsxx_dma_pool;
 
 struct dma_tracker {
@@ -122,7 +119,7 @@ static unsigned int rsxx_get_dma_tgt(struct rsxx_cardinfo *card, u64 addr8)
         return tgt;
 }
 
-static void rsxx_dma_queue_reset(struct rsxx_cardinfo *card)
+void rsxx_dma_queue_reset(struct rsxx_cardinfo *card)
 {
         /* Reset all DMA Command/Status Queues */
         iowrite32(DMA_QUEUE_RESET, card->regmap + RESET);
@@ -210,7 +207,8 @@ static void dma_intr_coal_auto_tune(struct rsxx_cardinfo *card)
         u32 q_depth = 0;
         u32 intr_coal;
 
-        if (card->config.data.intr_coal.mode != RSXX_INTR_COAL_AUTO_TUNE)
+        if (card->config.data.intr_coal.mode != RSXX_INTR_COAL_AUTO_TUNE ||
+            unlikely(card->eeh_state))
                 return;
 
         for (i = 0; i < card->n_targets; i++)
@@ -223,31 +221,26 @@ static void dma_intr_coal_auto_tune(struct rsxx_cardinfo *card)
 }
 
 /*----------------- RSXX DMA Handling -------------------*/
-static void rsxx_complete_dma(struct rsxx_cardinfo *card,
+static void rsxx_complete_dma(struct rsxx_dma_ctrl *ctrl,
                                   struct rsxx_dma *dma,
                                   unsigned int status)
 {
         if (status & DMA_SW_ERR)
-                printk_ratelimited(KERN_ERR
-                                   "SW Error in DMA(cmd x%02x, laddr x%08x)\n",
-                                   dma->cmd, dma->laddr);
+                ctrl->stats.dma_sw_err++;
         if (status & DMA_HW_FAULT)
-                printk_ratelimited(KERN_ERR
-                                   "HW Fault in DMA(cmd x%02x, laddr x%08x)\n",
-                                   dma->cmd, dma->laddr);
+                ctrl->stats.dma_hw_fault++;
         if (status & DMA_CANCELLED)
-                printk_ratelimited(KERN_ERR
-                                   "DMA Cancelled(cmd x%02x, laddr x%08x)\n",
-                                   dma->cmd, dma->laddr);
+                ctrl->stats.dma_cancelled++;
 
         if (dma->dma_addr)
-                pci_unmap_page(card->dev, dma->dma_addr, get_dma_size(dma),
+                pci_unmap_page(ctrl->card->dev, dma->dma_addr,
+                               get_dma_size(dma),
                                dma->cmd == HW_CMD_BLK_WRITE ?
                                            PCI_DMA_TODEVICE :
                                            PCI_DMA_FROMDEVICE);
 
         if (dma->cb)
-                dma->cb(card, dma->cb_data, status ? 1 : 0);
+                dma->cb(ctrl->card, dma->cb_data, status ? 1 : 0);
 
         kmem_cache_free(rsxx_dma_pool, dma);
 }
@@ -330,14 +323,15 @@ static void rsxx_handle_dma_error(struct rsxx_dma_ctrl *ctrl,
         if (requeue_cmd)
                 rsxx_requeue_dma(ctrl, dma);
         else
-                rsxx_complete_dma(ctrl->card, dma, status);
+                rsxx_complete_dma(ctrl, dma, status);
 }
 
 static void dma_engine_stalled(unsigned long data)
 {
         struct rsxx_dma_ctrl *ctrl = (struct rsxx_dma_ctrl *)data;
 
-        if (atomic_read(&ctrl->stats.hw_q_depth) == 0)
+        if (atomic_read(&ctrl->stats.hw_q_depth) == 0 ||
+            unlikely(ctrl->card->eeh_state))
                 return;
 
         if (ctrl->cmd.idx != ioread32(ctrl->regmap + SW_CMD_IDX)) {
@@ -369,7 +363,8 @@ static void rsxx_issue_dmas(struct work_struct *work)
         ctrl = container_of(work, struct rsxx_dma_ctrl, issue_dma_work);
         hw_cmd_buf = ctrl->cmd.buf;
 
-        if (unlikely(ctrl->card->halt))
+        if (unlikely(ctrl->card->halt) ||
+            unlikely(ctrl->card->eeh_state))
                 return;
 
         while (1) {
@@ -397,7 +392,7 @@ static void rsxx_issue_dmas(struct work_struct *work)
                  */
                 if (unlikely(ctrl->card->dma_fault)) {
                         push_tracker(ctrl->trackers, tag);
-                        rsxx_complete_dma(ctrl->card, dma, DMA_CANCELLED);
+                        rsxx_complete_dma(ctrl, dma, DMA_CANCELLED);
                         continue;
                 }
 
@@ -432,19 +427,15 @@ static void rsxx_issue_dmas(struct work_struct *work)
 
         /* Let HW know we've queued commands. */
         if (cmds_pending) {
-                /*
-                 * We must guarantee that the CPU writes to 'ctrl->cmd.buf'
-                 * (which is in PCI-consistent system-memory) from the loop
-                 * above make it into the coherency domain before the
-                 * following PIO "trigger" updating the cmd.idx.  A WMB is
-                 * sufficient. We need not explicitly CPU cache-flush since
-                 * the memory is a PCI-consistent (ie; coherent) mapping.
-                 */
-                wmb();
-
                 atomic_add(cmds_pending, &ctrl->stats.hw_q_depth);
                 mod_timer(&ctrl->activity_timer,
                           jiffies + DMA_ACTIVITY_TIMEOUT);
+
+                if (unlikely(ctrl->card->eeh_state)) {
+                        del_timer_sync(&ctrl->activity_timer);
+                        return;
+                }
+
                 iowrite32(ctrl->cmd.idx, ctrl->regmap + SW_CMD_IDX);
         }
 }
@@ -463,7 +454,8 @@ static void rsxx_dma_done(struct work_struct *work)
         hw_st_buf = ctrl->status.buf;
 
         if (unlikely(ctrl->card->halt) ||
-            unlikely(ctrl->card->dma_fault))
+            unlikely(ctrl->card->dma_fault) ||
+            unlikely(ctrl->card->eeh_state))
                 return;
 
         count = le16_to_cpu(hw_st_buf[ctrl->status.idx].count);
@@ -508,7 +500,7 @@ static void rsxx_dma_done(struct work_struct *work)
                 if (status)
                         rsxx_handle_dma_error(ctrl, dma, status);
                 else
-                        rsxx_complete_dma(ctrl->card, dma, 0);
+                        rsxx_complete_dma(ctrl, dma, 0);
 
                 push_tracker(ctrl->trackers, tag);
 
@@ -727,20 +719,54 @@ bvec_err:
 
 
 /*----------------- DMA Engine Initialization & Setup -------------------*/
+int rsxx_hw_buffers_init(struct pci_dev *dev, struct rsxx_dma_ctrl *ctrl)
+{
+        ctrl->status.buf = pci_alloc_consistent(dev, STATUS_BUFFER_SIZE8,
+                                &ctrl->status.dma_addr);
+        ctrl->cmd.buf = pci_alloc_consistent(dev, COMMAND_BUFFER_SIZE8,
+                                &ctrl->cmd.dma_addr);
+        if (ctrl->status.buf == NULL || ctrl->cmd.buf == NULL)
+                return -ENOMEM;
+
+        memset(ctrl->status.buf, 0xac, STATUS_BUFFER_SIZE8);
+        iowrite32(lower_32_bits(ctrl->status.dma_addr),
+                ctrl->regmap + SB_ADD_LO);
+        iowrite32(upper_32_bits(ctrl->status.dma_addr),
+                ctrl->regmap + SB_ADD_HI);
+
+        memset(ctrl->cmd.buf, 0x83, COMMAND_BUFFER_SIZE8);
+        iowrite32(lower_32_bits(ctrl->cmd.dma_addr), ctrl->regmap + CB_ADD_LO);
+        iowrite32(upper_32_bits(ctrl->cmd.dma_addr), ctrl->regmap + CB_ADD_HI);
+
+        ctrl->status.idx = ioread32(ctrl->regmap + HW_STATUS_CNT);
+        if (ctrl->status.idx > RSXX_MAX_OUTSTANDING_CMDS) {
+                dev_crit(&dev->dev, "Failed reading status cnt x%x\n",
+                        ctrl->status.idx);
+                return -EINVAL;
+        }
+        iowrite32(ctrl->status.idx, ctrl->regmap + HW_STATUS_CNT);
+        iowrite32(ctrl->status.idx, ctrl->regmap + SW_STATUS_CNT);
+
+        ctrl->cmd.idx = ioread32(ctrl->regmap + HW_CMD_IDX);
+        if (ctrl->cmd.idx > RSXX_MAX_OUTSTANDING_CMDS) {
+                dev_crit(&dev->dev, "Failed reading cmd cnt x%x\n",
+                        ctrl->status.idx);
+                return -EINVAL;
+        }
+        iowrite32(ctrl->cmd.idx, ctrl->regmap + HW_CMD_IDX);
+        iowrite32(ctrl->cmd.idx, ctrl->regmap + SW_CMD_IDX);
+
+        return 0;
+}
+
 static int rsxx_dma_ctrl_init(struct pci_dev *dev,
                                   struct rsxx_dma_ctrl *ctrl)
 {
         int i;
+        int st;
 
         memset(&ctrl->stats, 0, sizeof(ctrl->stats));
 
-        ctrl->status.buf = pci_alloc_consistent(dev, STATUS_BUFFER_SIZE8,
-                                                &ctrl->status.dma_addr);
-        ctrl->cmd.buf = pci_alloc_consistent(dev, COMMAND_BUFFER_SIZE8,
-                                             &ctrl->cmd.dma_addr);
-        if (ctrl->status.buf == NULL || ctrl->cmd.buf == NULL)
-                return -ENOMEM;
-
         ctrl->trackers = vmalloc(DMA_TRACKER_LIST_SIZE8);
         if (!ctrl->trackers)
                 return -ENOMEM;
@@ -770,35 +796,9 @@ static int rsxx_dma_ctrl_init(struct pci_dev *dev,
         INIT_WORK(&ctrl->issue_dma_work, rsxx_issue_dmas);
         INIT_WORK(&ctrl->dma_done_work, rsxx_dma_done);
 
-        memset(ctrl->status.buf, 0xac, STATUS_BUFFER_SIZE8);
-        iowrite32(lower_32_bits(ctrl->status.dma_addr),
-                  ctrl->regmap + SB_ADD_LO);
-        iowrite32(upper_32_bits(ctrl->status.dma_addr),
-                  ctrl->regmap + SB_ADD_HI);
-
-        memset(ctrl->cmd.buf, 0x83, COMMAND_BUFFER_SIZE8);
-        iowrite32(lower_32_bits(ctrl->cmd.dma_addr), ctrl->regmap + CB_ADD_LO);
-        iowrite32(upper_32_bits(ctrl->cmd.dma_addr), ctrl->regmap + CB_ADD_HI);
-
-        ctrl->status.idx = ioread32(ctrl->regmap + HW_STATUS_CNT);
-        if (ctrl->status.idx > RSXX_MAX_OUTSTANDING_CMDS) {
-                dev_crit(&dev->dev, "Failed reading status cnt x%x\n",
-                         ctrl->status.idx);
-                return -EINVAL;
-        }
-        iowrite32(ctrl->status.idx, ctrl->regmap + HW_STATUS_CNT);
-        iowrite32(ctrl->status.idx, ctrl->regmap + SW_STATUS_CNT);
-
-        ctrl->cmd.idx = ioread32(ctrl->regmap + HW_CMD_IDX);
-        if (ctrl->cmd.idx > RSXX_MAX_OUTSTANDING_CMDS) {
-                dev_crit(&dev->dev, "Failed reading cmd cnt x%x\n",
-                         ctrl->status.idx);
-                return -EINVAL;
-        }
-        iowrite32(ctrl->cmd.idx, ctrl->regmap + HW_CMD_IDX);
-        iowrite32(ctrl->cmd.idx, ctrl->regmap + SW_CMD_IDX);
-
-        wmb();
+        st = rsxx_hw_buffers_init(dev, ctrl);
+        if (st)
+                return st;
 
         return 0;
 }
@@ -834,7 +834,7 @@ static int rsxx_dma_stripe_setup(struct rsxx_cardinfo *card,
         return 0;
 }
 
-static int rsxx_dma_configure(struct rsxx_cardinfo *card)
+int rsxx_dma_configure(struct rsxx_cardinfo *card)
 {
         u32 intr_coal;
 
@@ -980,6 +980,103 @@ void rsxx_dma_destroy(struct rsxx_cardinfo *card)
         }
 }
 
+int rsxx_eeh_save_issued_dmas(struct rsxx_cardinfo *card)
+{
+        int i;
+        int j;
+        int cnt;
+        struct rsxx_dma *dma;
+        struct list_head *issued_dmas;
+
+        issued_dmas = kzalloc(sizeof(*issued_dmas) * card->n_targets,
+                              GFP_KERNEL);
+        if (!issued_dmas)
+                return -ENOMEM;
+
+        for (i = 0; i < card->n_targets; i++) {
+                INIT_LIST_HEAD(&issued_dmas[i]);
+                cnt = 0;
+                for (j = 0; j < RSXX_MAX_OUTSTANDING_CMDS; j++) {
+                        dma = get_tracker_dma(card->ctrl[i].trackers, j);
+                        if (dma == NULL)
+                                continue;
+
+                        if (dma->cmd == HW_CMD_BLK_WRITE)
+                                card->ctrl[i].stats.writes_issued--;
+                        else if (dma->cmd == HW_CMD_BLK_DISCARD)
+                                card->ctrl[i].stats.discards_issued--;
+                        else
+                                card->ctrl[i].stats.reads_issued--;
+
+                        list_add_tail(&dma->list, &issued_dmas[i]);
+                        push_tracker(card->ctrl[i].trackers, j);
+                        cnt++;
+                }
+
+                spin_lock(&card->ctrl[i].queue_lock);
+                list_splice(&issued_dmas[i], &card->ctrl[i].queue);
+
+                atomic_sub(cnt, &card->ctrl[i].stats.hw_q_depth);
+                card->ctrl[i].stats.sw_q_depth += cnt;
+                card->ctrl[i].e_cnt = 0;
+
+                list_for_each_entry(dma, &card->ctrl[i].queue, list) {
+                        if (dma->dma_addr)
+                                pci_unmap_page(card->dev, dma->dma_addr,
+                                               get_dma_size(dma),
+                                               dma->cmd == HW_CMD_BLK_WRITE ?
+                                               PCI_DMA_TODEVICE :
+                                               PCI_DMA_FROMDEVICE);
+                }
+                spin_unlock(&card->ctrl[i].queue_lock);
+        }
+
+        kfree(issued_dmas);
+
+        return 0;
+}
+
+void rsxx_eeh_cancel_dmas(struct rsxx_cardinfo *card)
+{
+        struct rsxx_dma *dma;
+        struct rsxx_dma *tmp;
+        int i;
+
+        for (i = 0; i < card->n_targets; i++) {
+                spin_lock(&card->ctrl[i].queue_lock);
+                list_for_each_entry_safe(dma, tmp, &card->ctrl[i].queue, list) {
+                        list_del(&dma->list);
+
+                        rsxx_complete_dma(&card->ctrl[i], dma, DMA_CANCELLED);
+                }
+                spin_unlock(&card->ctrl[i].queue_lock);
+        }
+}
+
+int rsxx_eeh_remap_dmas(struct rsxx_cardinfo *card)
+{
+        struct rsxx_dma *dma;
+        int i;
+
+        for (i = 0; i < card->n_targets; i++) {
+                spin_lock(&card->ctrl[i].queue_lock);
+                list_for_each_entry(dma, &card->ctrl[i].queue, list) {
+                        dma->dma_addr = pci_map_page(card->dev, dma->page,
+                                        dma->pg_off, get_dma_size(dma),
+                                        dma->cmd == HW_CMD_BLK_WRITE ?
+                                        PCI_DMA_TODEVICE :
+                                        PCI_DMA_FROMDEVICE);
+                        if (!dma->dma_addr) {
+                                spin_unlock(&card->ctrl[i].queue_lock);
+                                kmem_cache_free(rsxx_dma_pool, dma);
+                                return -ENOMEM;
+                        }
+                }
+                spin_unlock(&card->ctrl[i].queue_lock);
+        }
+
+        return 0;
+}
 
 int rsxx_dma_init(void)
 {
diff --git a/drivers/block/rsxx/rsxx.h b/drivers/block/rsxx/rsxx.h
index 2e50b65902b7..24ba3642bd89 100644
--- a/drivers/block/rsxx/rsxx.h
+++ b/drivers/block/rsxx/rsxx.h
@@ -27,15 +27,17 @@
 
 /*----------------- IOCTL Definitions -------------------*/
 
+#define RSXX_MAX_DATA 8
+
 struct rsxx_reg_access {
         __u32 addr;
         __u32 cnt;
         __u32 stat;
         __u32 stream;
-        __u32 data[8];
+        __u32 data[RSXX_MAX_DATA];
 };
 
-#define RSXX_MAX_REG_CNT        (8 * (sizeof(__u32)))
+#define RSXX_MAX_REG_CNT        (RSXX_MAX_DATA * (sizeof(__u32)))
 
 #define RSXX_IOC_MAGIC 'r'
 
diff --git a/drivers/block/rsxx/rsxx_cfg.h b/drivers/block/rsxx/rsxx_cfg.h
index c025fe5fdb70..f384c943846d 100644
--- a/drivers/block/rsxx/rsxx_cfg.h
+++ b/drivers/block/rsxx/rsxx_cfg.h
@@ -58,7 +58,7 @@ struct rsxx_card_cfg {
 };
 
 /* Vendor ID Values */
-#define RSXX_VENDOR_ID_TMS_IBM          0
+#define RSXX_VENDOR_ID_IBM              0
 #define RSXX_VENDOR_ID_DSI              1
 #define RSXX_VENDOR_COUNT               2
 
diff --git a/drivers/block/rsxx/rsxx_priv.h b/drivers/block/rsxx/rsxx_priv.h
index a1ac907d8f4c..382e8bf5c03b 100644
--- a/drivers/block/rsxx/rsxx_priv.h
+++ b/drivers/block/rsxx/rsxx_priv.h
@@ -45,16 +45,13 @@
 
 struct proc_cmd;
 
-#define PCI_VENDOR_ID_TMS_IBM           0x15B6
-#define PCI_DEVICE_ID_RS70_FLASH        0x0019
-#define PCI_DEVICE_ID_RS70D_FLASH       0x001A
-#define PCI_DEVICE_ID_RS80_FLASH        0x001C
-#define PCI_DEVICE_ID_RS81_FLASH        0x001E
+#define PCI_DEVICE_ID_FS70_FLASH        0x04A9
+#define PCI_DEVICE_ID_FS80_FLASH        0x04AA
 
 #define RS70_PCI_REV_SUPPORTED  4
 
 #define DRIVER_NAME "rsxx"
-#define DRIVER_VERSION "3.7"
+#define DRIVER_VERSION "4.0"
 
 /* Block size is 4096 */
 #define RSXX_HW_BLK_SHIFT               12
@@ -67,6 +64,9 @@ struct proc_cmd;
 #define RSXX_MAX_OUTSTANDING_CMDS       255
 #define RSXX_CS_IDX_MASK                0xff
 
+#define STATUS_BUFFER_SIZE8     4096
+#define COMMAND_BUFFER_SIZE8    4096
+
 #define RSXX_MAX_TARGETS        8
 
 struct dma_tracker_list;
@@ -91,6 +91,9 @@ struct rsxx_dma_stats {
         u32 discards_failed;
         u32 done_rescheduled;
         u32 issue_rescheduled;
+        u32 dma_sw_err;
+        u32 dma_hw_fault;
+        u32 dma_cancelled;
         u32 sw_q_depth;         /* Number of DMAs on the SW queue. */
         atomic_t hw_q_depth;    /* Number of DMAs queued to HW. */
 };
@@ -116,6 +119,7 @@ struct rsxx_dma_ctrl {
 struct rsxx_cardinfo {
         struct pci_dev          *dev;
         unsigned int            halt;
+        unsigned int            eeh_state;
 
         void                    __iomem *regmap;
         spinlock_t              irq_lock;
@@ -224,6 +228,7 @@ enum rsxx_pci_regmap {
         PERF_RD512_HI   = 0xac,
         PERF_WR512_LO   = 0xb0,
         PERF_WR512_HI   = 0xb4,
+        PCI_RECONFIG    = 0xb8,
 };
 
 enum rsxx_intr {
@@ -237,6 +242,8 @@ enum rsxx_intr {
         CR_INTR_DMA5    = 0x00000080,
         CR_INTR_DMA6    = 0x00000100,
         CR_INTR_DMA7    = 0x00000200,
+        CR_INTR_ALL_C   = 0x0000003f,
+        CR_INTR_ALL_G   = 0x000003ff,
         CR_INTR_DMA_ALL = 0x000003f5,
         CR_INTR_ALL     = 0xffffffff,
 };
@@ -253,8 +260,14 @@ enum rsxx_pci_reset {
         DMA_QUEUE_RESET         = 0x00000001,
 };
 
+enum rsxx_hw_fifo_flush {
+        RSXX_FLUSH_BUSY         = 0x00000002,
+        RSXX_FLUSH_TIMEOUT      = 0x00000004,
+};
+
 enum rsxx_pci_revision {
         RSXX_DISCARD_SUPPORT = 2,
+        RSXX_EEH_SUPPORT     = 3,
 };
 
 enum rsxx_creg_cmd {
@@ -360,11 +373,17 @@ int rsxx_dma_setup(struct rsxx_cardinfo *card);
 void rsxx_dma_destroy(struct rsxx_cardinfo *card);
 int rsxx_dma_init(void);
 void rsxx_dma_cleanup(void);
+void rsxx_dma_queue_reset(struct rsxx_cardinfo *card);
+int rsxx_dma_configure(struct rsxx_cardinfo *card);
 int rsxx_dma_queue_bio(struct rsxx_cardinfo *card,
                            struct bio *bio,
                            atomic_t *n_dmas,
                            rsxx_dma_cb cb,
                            void *cb_data);
+int rsxx_hw_buffers_init(struct pci_dev *dev, struct rsxx_dma_ctrl *ctrl);
+int rsxx_eeh_save_issued_dmas(struct rsxx_cardinfo *card);
+void rsxx_eeh_cancel_dmas(struct rsxx_cardinfo *card);
+int rsxx_eeh_remap_dmas(struct rsxx_cardinfo *card);
 
 /***** cregs.c *****/
 int rsxx_creg_write(struct rsxx_cardinfo *card, u32 addr,
@@ -389,10 +408,11 @@ int rsxx_creg_setup(struct rsxx_cardinfo *card);
 void rsxx_creg_destroy(struct rsxx_cardinfo *card);
 int rsxx_creg_init(void);
 void rsxx_creg_cleanup(void);
-
 int rsxx_reg_access(struct rsxx_cardinfo *card,
                         struct rsxx_reg_access __user *ucmd,
                         int read);
+void rsxx_eeh_save_issued_creg(struct rsxx_cardinfo *card);
+void rsxx_kick_creg_queue(struct rsxx_cardinfo *card);
 
 
 
diff --git a/drivers/block/xen-blkback/blkback.c b/drivers/block/xen-blkback/blkback.c
index de1f319f7bd7..dd5b2fed97e9 100644
--- a/drivers/block/xen-blkback/blkback.c
+++ b/drivers/block/xen-blkback/blkback.c
@@ -164,7 +164,7 @@ static void make_response(struct xen_blkif *blkif, u64 id,
 
 #define foreach_grant_safe(pos, n, rbtree, node) \
         for ((pos) = container_of(rb_first((rbtree)), typeof(*(pos)), node), \
-             (n) = rb_next(&(pos)->node); \
+             (n) = (&(pos)->node != NULL) ? rb_next(&(pos)->node) : NULL; \
              &(pos)->node != NULL; \
              (pos) = container_of(n, typeof(*(pos)), node), \
              (n) = (&(pos)->node != NULL) ? rb_next(&(pos)->node) : NULL)
@@ -381,8 +381,8 @@ irqreturn_t xen_blkif_be_int(int irq, void *dev_id)
 
 static void print_stats(struct xen_blkif *blkif)
 {
-        pr_info("xen-blkback (%s): oo %3d  |  rd %4d  |  wr %4d  |  f %4d"
-                 "  |  ds %4d\n",
+        pr_info("xen-blkback (%s): oo %3llu  |  rd %4llu  |  wr %4llu  |  f %4llu"
+                 "  |  ds %4llu\n",
                  current->comm, blkif->st_oo_req,
                  blkif->st_rd_req, blkif->st_wr_req,
                  blkif->st_f_req, blkif->st_ds_req);
@@ -442,7 +442,7 @@ int xen_blkif_schedule(void *arg)
 }
 
 struct seg_buf {
-        unsigned long buf;
+        unsigned int offset;
         unsigned int nsec;
 };
 /*
@@ -621,30 +621,21 @@ static int xen_blkbk_map(struct blkif_request *req,
                                  * If this is a new persistent grant
                                  * save the handler
                                  */
-                                persistent_gnts[i]->handle = map[j].handle;
-                                persistent_gnts[i]->dev_bus_addr =
-                                        map[j++].dev_bus_addr;
+                                persistent_gnts[i]->handle = map[j++].handle;
                         }
                         pending_handle(pending_req, i) =
                                 persistent_gnts[i]->handle;
 
                         if (ret)
                                 continue;
-
-                        seg[i].buf = persistent_gnts[i]->dev_bus_addr |
-                                (req->u.rw.seg[i].first_sect << 9);
                 } else {
-                        pending_handle(pending_req, i) = map[j].handle;
+                        pending_handle(pending_req, i) = map[j++].handle;
                         bitmap_set(pending_req->unmap_seg, i, 1);
 
-                        if (ret) {
-                                j++;
+                        if (ret)
                                 continue;
-                        }
-
-                        seg[i].buf = map[j++].dev_bus_addr |
-                                (req->u.rw.seg[i].first_sect << 9);
                 }
+                seg[i].offset = (req->u.rw.seg[i].first_sect << 9);
         }
         return ret;
 }
@@ -679,6 +670,16 @@ static int dispatch_discard_io(struct xen_blkif *blkif,
         return err;
 }
 
+static int dispatch_other_io(struct xen_blkif *blkif,
+                             struct blkif_request *req,
+                             struct pending_req *pending_req)
+{
+        free_req(pending_req);
+        make_response(blkif, req->u.other.id, req->operation,
+                      BLKIF_RSP_EOPNOTSUPP);
+        return -EIO;
+}
+
 static void xen_blk_drain_io(struct xen_blkif *blkif)
 {
         atomic_set(&blkif->drain, 1);
@@ -800,17 +801,30 @@ __do_block_io_op(struct xen_blkif *blkif)
 
                 /* Apply all sanity checks to /private copy/ of request. */
                 barrier();
-                if (unlikely(req.operation == BLKIF_OP_DISCARD)) {
+
+                switch (req.operation) {
+                case BLKIF_OP_READ:
+                case BLKIF_OP_WRITE:
+                case BLKIF_OP_WRITE_BARRIER:
+                case BLKIF_OP_FLUSH_DISKCACHE:
+                        if (dispatch_rw_block_io(blkif, &req, pending_req))
+                                goto done;
+                        break;
+                case BLKIF_OP_DISCARD:
                         free_req(pending_req);
                         if (dispatch_discard_io(blkif, &req))
-                                break;
-                } else if (dispatch_rw_block_io(blkif, &req, pending_req))
+                                goto done;
                         break;
+                default:
+                        if (dispatch_other_io(blkif, &req, pending_req))
+                                goto done;
+                        break;
+                }
 
                 /* Yield point for this unbounded loop. */
                 cond_resched();
         }
-
+done:
         return more_to_do;
 }
 
@@ -904,7 +918,8 @@ static int dispatch_rw_block_io(struct xen_blkif *blkif,
                 pr_debug(DRV_PFX "access denied: %s of [%llu,%llu] on dev=%04x\n",
                          operation == READ ? "read" : "write",
                          preq.sector_number,
-                         preq.sector_number + preq.nr_sects, preq.dev);
+                         preq.sector_number + preq.nr_sects,
+                         blkif->vbd.pdevice);
                 goto fail_response;
         }
 
@@ -947,7 +962,7 @@ static int dispatch_rw_block_io(struct xen_blkif *blkif,
                        (bio_add_page(bio,
                                      pages[i],
                                      seg[i].nsec << 9,
-                                     seg[i].buf & ~PAGE_MASK) == 0)) {
+                                     seg[i].offset) == 0)) {
 
                         bio = bio_alloc(GFP_KERNEL, nseg-i);
                         if (unlikely(bio == NULL))
@@ -977,13 +992,7 @@ static int dispatch_rw_block_io(struct xen_blkif *blkif,
                 bio->bi_end_io  = end_block_io_op;
         }
 
-        /*
-         * We set it one so that the last submit_bio does not have to call
-         * atomic_inc.
-         */
         atomic_set(&pending_req->pendcnt, nbio);
-
-        /* Get a reference count for the disk queue and start sending I/O */
         blk_start_plug(&plug);
 
         for (i = 0; i < nbio; i++)
@@ -1011,6 +1020,7 @@ static int dispatch_rw_block_io(struct xen_blkif *blkif,
  fail_put_bio:
         for (i = 0; i < nbio; i++)
                 bio_put(biolist[i]);
+        atomic_set(&pending_req->pendcnt, 1);
         __end_block_io_op(pending_req, -EINVAL);
         msleep(1); /* back off a bit */
         return -EIO;
diff --git a/drivers/block/xen-blkback/common.h b/drivers/block/xen-blkback/common.h
index 6072390c7f57..60103e2517ba 100644
--- a/drivers/block/xen-blkback/common.h
+++ b/drivers/block/xen-blkback/common.h
@@ -77,11 +77,18 @@ struct blkif_x86_32_request_discard {
         uint64_t       nr_sectors;
 } __attribute__((__packed__));
 
+struct blkif_x86_32_request_other {
+        uint8_t        _pad1;
+        blkif_vdev_t   _pad2;
+        uint64_t       id;           /* private guest value, echoed in resp  */
+} __attribute__((__packed__));
+
 struct blkif_x86_32_request {
         uint8_t        operation;    /* BLKIF_OP_???                         */
         union {
                 struct blkif_x86_32_request_rw rw;
                 struct blkif_x86_32_request_discard discard;
+                struct blkif_x86_32_request_other other;
         } u;
 } __attribute__((__packed__));
 
@@ -113,11 +120,19 @@ struct blkif_x86_64_request_discard {
         uint64_t       nr_sectors;
 } __attribute__((__packed__));
 
+struct blkif_x86_64_request_other {
+        uint8_t        _pad1;
+        blkif_vdev_t   _pad2;
+        uint32_t       _pad3;        /* offsetof(blkif_..,u.discard.id)==8   */
+        uint64_t       id;           /* private guest value, echoed in resp  */
+} __attribute__((__packed__));
+
 struct blkif_x86_64_request {
         uint8_t        operation;    /* BLKIF_OP_???                         */
         union {
                 struct blkif_x86_64_request_rw rw;
                 struct blkif_x86_64_request_discard discard;
+                struct blkif_x86_64_request_other other;
         } u;
 } __attribute__((__packed__));
 
@@ -172,7 +187,6 @@ struct persistent_gnt {
         struct page *page;
         grant_ref_t gnt;
         grant_handle_t handle;
-        uint64_t dev_bus_addr;
         struct rb_node node;
 };
 
@@ -208,13 +222,13 @@ struct xen_blkif {
 
         /* statistics */
         unsigned long           st_print;
-        int                     st_rd_req;
-        int                     st_wr_req;
-        int                     st_oo_req;
-        int                     st_f_req;
-        int                     st_ds_req;
-        int                     st_rd_sect;
-        int                     st_wr_sect;
+        unsigned long long                      st_rd_req;
+        unsigned long long                      st_wr_req;
+        unsigned long long                      st_oo_req;
+        unsigned long long                      st_f_req;
+        unsigned long long                      st_ds_req;
+        unsigned long long                      st_rd_sect;
+        unsigned long long                      st_wr_sect;
 
         wait_queue_head_t       waiting_to_free;
 };
@@ -278,6 +292,11 @@ static inline void blkif_get_x86_32_req(struct blkif_request *dst,
                 dst->u.discard.nr_sectors = src->u.discard.nr_sectors;
                 break;
         default:
+                /*
+                 * Don't know how to translate this op. Only get the
+                 * ID so failure can be reported to the frontend.
+                 */
+                dst->u.other.id = src->u.other.id;
                 break;
         }
 }
@@ -309,6 +328,11 @@ static inline void blkif_get_x86_64_req(struct blkif_request *dst,
                 dst->u.discard.nr_sectors = src->u.discard.nr_sectors;
                 break;
         default:
+                /*
+                 * Don't know how to translate this op. Only get the
+                 * ID so failure can be reported to the frontend.
+                 */
+                dst->u.other.id = src->u.other.id;
                 break;
         }
 }
diff --git a/drivers/block/xen-blkback/xenbus.c b/drivers/block/xen-blkback/xenbus.c
index 5e237f630c47..8bfd1bcf95ec 100644
--- a/drivers/block/xen-blkback/xenbus.c
+++ b/drivers/block/xen-blkback/xenbus.c
@@ -230,13 +230,13 @@ int __init xen_blkif_interface_init(void)
         }                                                               \
         static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL)
 
-VBD_SHOW(oo_req,  "%d\n", be->blkif->st_oo_req);
-VBD_SHOW(rd_req,  "%d\n", be->blkif->st_rd_req);
-VBD_SHOW(wr_req,  "%d\n", be->blkif->st_wr_req);
-VBD_SHOW(f_req,  "%d\n", be->blkif->st_f_req);
-VBD_SHOW(ds_req,  "%d\n", be->blkif->st_ds_req);
-VBD_SHOW(rd_sect, "%d\n", be->blkif->st_rd_sect);
-VBD_SHOW(wr_sect, "%d\n", be->blkif->st_wr_sect);
+VBD_SHOW(oo_req,  "%llu\n", be->blkif->st_oo_req);
+VBD_SHOW(rd_req,  "%llu\n", be->blkif->st_rd_req);
+VBD_SHOW(wr_req,  "%llu\n", be->blkif->st_wr_req);
+VBD_SHOW(f_req,  "%llu\n", be->blkif->st_f_req);
+VBD_SHOW(ds_req,  "%llu\n", be->blkif->st_ds_req);
+VBD_SHOW(rd_sect, "%llu\n", be->blkif->st_rd_sect);
+VBD_SHOW(wr_sect, "%llu\n", be->blkif->st_wr_sect);
 
 static struct attribute *xen_vbdstat_attrs[] = {
         &dev_attr_oo_req.attr,
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index c3dae2e0f290..a894f88762d8 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -44,7 +44,7 @@
 #include <linux/mutex.h>
 #include <linux/scatterlist.h>
 #include <linux/bitmap.h>
-#include <linux/llist.h>
+#include <linux/list.h>
 
 #include <xen/xen.h>
 #include <xen/xenbus.h>
@@ -68,13 +68,12 @@ enum blkif_state {
 struct grant {
         grant_ref_t gref;
         unsigned long pfn;
-        struct llist_node node;
+        struct list_head node;
 };
 
 struct blk_shadow {
         struct blkif_request req;
         struct request *request;
-        unsigned long frame[BLKIF_MAX_SEGMENTS_PER_REQUEST];
         struct grant *grants_used[BLKIF_MAX_SEGMENTS_PER_REQUEST];
 };
 
@@ -105,7 +104,7 @@ struct blkfront_info
         struct work_struct work;
         struct gnttab_free_callback callback;
         struct blk_shadow shadow[BLK_RING_SIZE];
-        struct llist_head persistent_gnts;
+        struct list_head persistent_gnts;
         unsigned int persistent_gnts_c;
         unsigned long shadow_free;
         unsigned int feature_flush;
@@ -165,6 +164,69 @@ static int add_id_to_freelist(struct blkfront_info *info,
         return 0;
 }
 
+static int fill_grant_buffer(struct blkfront_info *info, int num)
+{
+        struct page *granted_page;
+        struct grant *gnt_list_entry, *n;
+        int i = 0;
+
+        while(i < num) {
+                gnt_list_entry = kzalloc(sizeof(struct grant), GFP_NOIO);
+                if (!gnt_list_entry)
+                        goto out_of_memory;
+
+                granted_page = alloc_page(GFP_NOIO);
+                if (!granted_page) {
+                        kfree(gnt_list_entry);
+                        goto out_of_memory;
+                }
+
+                gnt_list_entry->pfn = page_to_pfn(granted_page);
+                gnt_list_entry->gref = GRANT_INVALID_REF;
+                list_add(&gnt_list_entry->node, &info->persistent_gnts);
+                i++;
+        }
+
+        return 0;
+
+out_of_memory:
+        list_for_each_entry_safe(gnt_list_entry, n,
+                                 &info->persistent_gnts, node) {
+                list_del(&gnt_list_entry->node);
+                __free_page(pfn_to_page(gnt_list_entry->pfn));
+                kfree(gnt_list_entry);
+                i--;
+        }
+        BUG_ON(i != 0);
+        return -ENOMEM;
+}
+
+static struct grant *get_grant(grant_ref_t *gref_head,
+                               struct blkfront_info *info)
+{
+        struct grant *gnt_list_entry;
+        unsigned long buffer_mfn;
+
+        BUG_ON(list_empty(&info->persistent_gnts));
+        gnt_list_entry = list_first_entry(&info->persistent_gnts, struct grant,
+                                          node);
+        list_del(&gnt_list_entry->node);
+
+        if (gnt_list_entry->gref != GRANT_INVALID_REF) {
+                info->persistent_gnts_c--;
+                return gnt_list_entry;
+        }
+
+        /* Assign a gref to this page */
+        gnt_list_entry->gref = gnttab_claim_grant_reference(gref_head);
+        BUG_ON(gnt_list_entry->gref == -ENOSPC);
+        buffer_mfn = pfn_to_mfn(gnt_list_entry->pfn);
+        gnttab_grant_foreign_access_ref(gnt_list_entry->gref,
+                                        info->xbdev->otherend_id,
+                                        buffer_mfn, 0);
+        return gnt_list_entry;
+}
+
 static const char *op_name(int op)
 {
         static const char *const names[] = {
@@ -293,7 +355,6 @@ static int blkif_ioctl(struct block_device *bdev, fmode_t mode,
 static int blkif_queue_request(struct request *req)
 {
         struct blkfront_info *info = req->rq_disk->private_data;
-        unsigned long buffer_mfn;
         struct blkif_request *ring_req;
         unsigned long id;
         unsigned int fsect, lsect;
@@ -306,7 +367,6 @@ static int blkif_queue_request(struct request *req)
          */
         bool new_persistent_gnts;
         grant_ref_t gref_head;
-        struct page *granted_page;
         struct grant *gnt_list_entry = NULL;
         struct scatterlist *sg;
 
@@ -370,41 +430,8 @@ static int blkif_queue_request(struct request *req)
                         fsect = sg->offset >> 9;
                         lsect = fsect + (sg->length >> 9) - 1;
 
-                        if (info->persistent_gnts_c) {
-                                BUG_ON(llist_empty(&info->persistent_gnts));
-                                gnt_list_entry = llist_entry(
-                                        llist_del_first(&info->persistent_gnts),
-                                        struct grant, node);
-
-                                ref = gnt_list_entry->gref;
-                                buffer_mfn = pfn_to_mfn(gnt_list_entry->pfn);
-                                info->persistent_gnts_c--;
-                        } else {
-                                ref = gnttab_claim_grant_reference(&gref_head);
-                                BUG_ON(ref == -ENOSPC);
-
-                                gnt_list_entry =
-                                        kmalloc(sizeof(struct grant),
-                                                         GFP_ATOMIC);
-                                if (!gnt_list_entry)
-                                        return -ENOMEM;
-
-                                granted_page = alloc_page(GFP_ATOMIC);
-                                if (!granted_page) {
-                                        kfree(gnt_list_entry);
-                                        return -ENOMEM;
-                                }
-
-                                gnt_list_entry->pfn =
-                                        page_to_pfn(granted_page);
-                                gnt_list_entry->gref = ref;
-
-                                buffer_mfn = pfn_to_mfn(page_to_pfn(
-                                                                granted_page));
-                                gnttab_grant_foreign_access_ref(ref,
-                                        info->xbdev->otherend_id,
-                                        buffer_mfn, 0);
-                        }
+                        gnt_list_entry = get_grant(&gref_head, info);
+                        ref = gnt_list_entry->gref;
 
                         info->shadow[id].grants_used[i] = gnt_list_entry;
 
@@ -435,7 +462,6 @@ static int blkif_queue_request(struct request *req)
                                 kunmap_atomic(shared_data);
                         }
 
-                        info->shadow[id].frame[i] = mfn_to_pfn(buffer_mfn);
                         ring_req->u.rw.seg[i] =
                                         (struct blkif_request_segment) {
                                                 .gref       = ref,
@@ -790,9 +816,8 @@ static void blkif_restart_queue(struct work_struct *work)
 
 static void blkif_free(struct blkfront_info *info, int suspend)
 {
-        struct llist_node *all_gnts;
-        struct grant *persistent_gnt, *tmp;
-        struct llist_node *n;
+        struct grant *persistent_gnt;
+        struct grant *n;
 
         /* Prevent new requests being issued until we fix things up. */
         spin_lock_irq(&info->io_lock);
@@ -803,22 +828,20 @@ static void blkif_free(struct blkfront_info *info, int suspend)
                 blk_stop_queue(info->rq);
 
         /* Remove all persistent grants */
-        if (info->persistent_gnts_c) {
-                all_gnts = llist_del_all(&info->persistent_gnts);
-                persistent_gnt = llist_entry(all_gnts, typeof(*(persistent_gnt)), node);
-                while (persistent_gnt) {
-                        gnttab_end_foreign_access(persistent_gnt->gref, 0, 0UL);
+        if (!list_empty(&info->persistent_gnts)) {
+                list_for_each_entry_safe(persistent_gnt, n,
+                                         &info->persistent_gnts, node) {
+                        list_del(&persistent_gnt->node);
+                        if (persistent_gnt->gref != GRANT_INVALID_REF) {
+                                gnttab_end_foreign_access(persistent_gnt->gref,
+                                                          0, 0UL);
+                                info->persistent_gnts_c--;
+                        }
                         __free_page(pfn_to_page(persistent_gnt->pfn));
-                        tmp = persistent_gnt;
-                        n = persistent_gnt->node.next;
-                        if (n)
-                                persistent_gnt = llist_entry(n, typeof(*(persistent_gnt)), node);
-                        else
-                                persistent_gnt = NULL;
-                        kfree(tmp);
+                        kfree(persistent_gnt);
                 }
-                info->persistent_gnts_c = 0;
         }
+        BUG_ON(info->persistent_gnts_c != 0);
 
         /* No more gnttab callback work. */
         gnttab_cancel_free_callback(&info->callback);
@@ -875,7 +898,7 @@ static void blkif_completion(struct blk_shadow *s, struct blkfront_info *info,
         }
         /* Add the persistent grant into the list of free grants */
         for (i = 0; i < s->req.u.rw.nr_segments; i++) {
-                llist_add(&s->grants_used[i]->node, &info->persistent_gnts);
+                list_add(&s->grants_used[i]->node, &info->persistent_gnts);
                 info->persistent_gnts_c++;
         }
 }
@@ -1013,6 +1036,12 @@ static int setup_blkring(struct xenbus_device *dev,
 
         sg_init_table(info->sg, BLKIF_MAX_SEGMENTS_PER_REQUEST);
 
+        /* Allocate memory for grants */
+        err = fill_grant_buffer(info, BLK_RING_SIZE *
+                                      BLKIF_MAX_SEGMENTS_PER_REQUEST);
+        if (err)
+                goto fail;
+
         err = xenbus_grant_ring(dev, virt_to_mfn(info->ring.sring));
         if (err < 0) {
                 free_page((unsigned long)sring);
@@ -1171,7 +1200,7 @@ static int blkfront_probe(struct xenbus_device *dev,
         spin_lock_init(&info->io_lock);
         info->xbdev = dev;
         info->vdevice = vdevice;
-        init_llist_head(&info->persistent_gnts);
+        INIT_LIST_HEAD(&info->persistent_gnts);
         info->persistent_gnts_c = 0;
         info->connected = BLKIF_STATE_DISCONNECTED;
         INIT_WORK(&info->work, blkif_restart_queue);
@@ -1203,11 +1232,10 @@ static int blkif_recover(struct blkfront_info *info)
         int j;
 
         /* Stage 1: Make a safe copy of the shadow state. */
-        copy = kmalloc(sizeof(info->shadow),
+        copy = kmemdup(info->shadow, sizeof(info->shadow),
                        GFP_NOIO | __GFP_REPEAT | __GFP_HIGH);
         if (!copy)
                 return -ENOMEM;
-        memcpy(copy, info->shadow, sizeof(info->shadow));
 
         /* Stage 2: Set up free list. */
         memset(&info->shadow, 0, sizeof(info->shadow));
@@ -1236,7 +1264,7 @@ static int blkif_recover(struct blkfront_info *info)
                                 gnttab_grant_foreign_access_ref(
                                         req->u.rw.seg[j].gref,
                                         info->xbdev->otherend_id,
-                                        pfn_to_mfn(info->shadow[req->u.rw.id].frame[j]),
+                                        pfn_to_mfn(copy[i].grants_used[j]->pfn),
                                         0);
                 }
                 info->shadow[req->u.rw.id].req = *req;
diff --git a/drivers/bluetooth/ath3k.c b/drivers/bluetooth/ath3k.c
index a8a41e07a221..6aab00ef4379 100644
--- a/drivers/bluetooth/ath3k.c
+++ b/drivers/bluetooth/ath3k.c
@@ -73,9 +73,13 @@ static struct usb_device_id ath3k_table[] = {
         { USB_DEVICE(0x03F0, 0x311D) },
 
         /* Atheros AR3012 with sflash firmware*/
+        { USB_DEVICE(0x0CF3, 0x0036) },
         { USB_DEVICE(0x0CF3, 0x3004) },
+        { USB_DEVICE(0x0CF3, 0x3008) },
         { USB_DEVICE(0x0CF3, 0x311D) },
+        { USB_DEVICE(0x0CF3, 0x817a) },
         { USB_DEVICE(0x13d3, 0x3375) },
+        { USB_DEVICE(0x04CA, 0x3004) },
         { USB_DEVICE(0x04CA, 0x3005) },
         { USB_DEVICE(0x04CA, 0x3006) },
         { USB_DEVICE(0x04CA, 0x3008) },
@@ -105,9 +109,13 @@ MODULE_DEVICE_TABLE(usb, ath3k_table);
 static struct usb_device_id ath3k_blist_tbl[] = {
 
         /* Atheros AR3012 with sflash firmware*/
+        { USB_DEVICE(0x0CF3, 0x0036), .driver_info = BTUSB_ATH3012 },
         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
+        { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
         { USB_DEVICE(0x0cf3, 0x311D), .driver_info = BTUSB_ATH3012 },
+        { USB_DEVICE(0x0CF3, 0x817a), .driver_info = BTUSB_ATH3012 },
         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
+        { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 7e351e345476..2cc5f774a29c 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -131,9 +131,13 @@ static struct usb_device_id blacklist_table[] = {
         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 
         /* Atheros 3012 with sflash firmware */
+        { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
+        { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
+        { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
+        { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
diff --git a/drivers/clk/clk-vt8500.c b/drivers/clk/clk-vt8500.c
index b5538bba7a10..09c63315e579 100644
--- a/drivers/clk/clk-vt8500.c
+++ b/drivers/clk/clk-vt8500.c
@@ -157,7 +157,7 @@ static int vt8500_dclk_set_rate(struct clk_hw *hw, unsigned long rate,
         divisor =  parent_rate / rate;
 
         /* If prate / rate would be decimal, incr the divisor */
-        if (rate * divisor < *prate)
+        if (rate * divisor < parent_rate)
                 divisor++;
 
         if (divisor == cdev->div_mask + 1)
diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c
index 937bc286591f..57a8774f0b4e 100644
--- a/drivers/cpufreq/acpi-cpufreq.c
+++ b/drivers/cpufreq/acpi-cpufreq.c
@@ -730,7 +730,6 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
             policy->shared_type == CPUFREQ_SHARED_TYPE_ANY) {
                 cpumask_copy(policy->cpus, perf->shared_cpu_map);
         }
-        cpumask_copy(policy->related_cpus, perf->shared_cpu_map);
 
 #ifdef CONFIG_SMP
         dmi_check_system(sw_any_bug_dmi_table);
@@ -742,7 +741,6 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
         if (check_amd_hwpstate_cpu(cpu) && !acpi_pstate_strict) {
                 cpumask_clear(policy->cpus);
                 cpumask_set_cpu(cpu, policy->cpus);
-                cpumask_copy(policy->related_cpus, cpu_sibling_mask(cpu));
                 policy->shared_type = CPUFREQ_SHARED_TYPE_HW;
                 pr_info_once(PFX "overriding BIOS provided _PSD data\n");
         }
diff --git a/drivers/cpufreq/cpufreq_stats.c b/drivers/cpufreq/cpufreq_stats.c
index 2fd779eb1ed1..bfd6273fd873 100644
--- a/drivers/cpufreq/cpufreq_stats.c
+++ b/drivers/cpufreq/cpufreq_stats.c
@@ -180,15 +180,19 @@ static void cpufreq_stats_free_sysfs(unsigned int cpu)
 {
         struct cpufreq_policy *policy = cpufreq_cpu_get(cpu);
 
-        if (!cpufreq_frequency_get_table(cpu))
+        if (!policy)
                 return;
 
-        if (policy && !policy_is_shared(policy)) {
+        if (!cpufreq_frequency_get_table(cpu))
+                goto put_ref;
+
+        if (!policy_is_shared(policy)) {
                 pr_debug("%s: Free sysfs stat\n", __func__);
                 sysfs_remove_group(&policy->kobj, &stats_attr_group);
         }
-        if (policy)
-                cpufreq_cpu_put(policy);
+
+put_ref:
+        cpufreq_cpu_put(policy);
 }
 
 static int cpufreq_stats_create_table(struct cpufreq_policy *policy,
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index f6dd1e761129..ad72922919ed 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -358,14 +358,14 @@ static void intel_pstate_sysfs_expose_params(void)
 static int intel_pstate_min_pstate(void)
 {
         u64 value;
-        rdmsrl(0xCE, value);
+        rdmsrl(MSR_PLATFORM_INFO, value);
         return (value >> 40) & 0xFF;
 }
 
 static int intel_pstate_max_pstate(void)
 {
         u64 value;
-        rdmsrl(0xCE, value);
+        rdmsrl(MSR_PLATFORM_INFO, value);
         return (value >> 8) & 0xFF;
 }
 
@@ -373,7 +373,7 @@ static int intel_pstate_turbo_pstate(void)
 {
         u64 value;
         int nont, ret;
-        rdmsrl(0x1AD, value);
+        rdmsrl(MSR_NHM_TURBO_RATIO_LIMIT, value);
         nont = intel_pstate_max_pstate();
         ret = ((value) & 255);
         if (ret <= nont)
@@ -454,7 +454,7 @@ static inline void intel_pstate_calc_busy(struct cpudata *cpu,
                                         sample->idletime_us * 100,
                                         sample->duration_us);
         core_pct = div64_u64(sample->aperf * 100, sample->mperf);
-        sample->freq = cpu->pstate.turbo_pstate * core_pct * 1000;
+        sample->freq = cpu->pstate.max_pstate * core_pct * 1000;
 
         sample->core_pct_busy = div_s64((sample->pstate_pct_busy * core_pct),
                                         100);
@@ -752,6 +752,29 @@ static struct cpufreq_driver intel_pstate_driver = {
 
 static int __initdata no_load;
 
+static int intel_pstate_msrs_not_valid(void)
+{
+        /* Check that all the msr's we are using are valid. */
+        u64 aperf, mperf, tmp;
+
+        rdmsrl(MSR_IA32_APERF, aperf);
+        rdmsrl(MSR_IA32_MPERF, mperf);
+
+        if (!intel_pstate_min_pstate() ||
+                !intel_pstate_max_pstate() ||
+                !intel_pstate_turbo_pstate())
+                return -ENODEV;
+
+        rdmsrl(MSR_IA32_APERF, tmp);
+        if (!(tmp - aperf))
+                return -ENODEV;
+
+        rdmsrl(MSR_IA32_MPERF, tmp);
+        if (!(tmp - mperf))
+                return -ENODEV;
+
+        return 0;
+}
 static int __init intel_pstate_init(void)
 {
         int cpu, rc = 0;
@@ -764,6 +787,9 @@ static int __init intel_pstate_init(void)
         if (!id)
                 return -ENODEV;
 
+        if (intel_pstate_msrs_not_valid())
+                return -ENODEV;
+
         pr_info("Intel P-state driver initializing.\n");
 
         all_cpu_data = vmalloc(sizeof(void *) * num_possible_cpus());
diff --git a/drivers/crypto/caam/caamalg.c b/drivers/crypto/caam/caamalg.c
index b2a0a0726a54..cf268b14ae9a 100644
--- a/drivers/crypto/caam/caamalg.c
+++ b/drivers/crypto/caam/caamalg.c
@@ -1650,11 +1650,7 @@ struct caam_alg_template {
 };
 
 static struct caam_alg_template driver_algs[] = {
-        /*
-         * single-pass ipsec_esp descriptor
-         * authencesn(*,*) is also registered, although not present
-         * explicitly here.
-         */
+        /* single-pass ipsec_esp descriptor */
         {
                 .name = "authenc(hmac(md5),cbc(aes))",
                 .driver_name = "authenc-hmac-md5-cbc-aes-caam",
@@ -2217,9 +2213,7 @@ static int __init caam_algapi_init(void)
         for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
                 /* TODO: check if h/w supports alg */
                 struct caam_crypto_alg *t_alg;
-                bool done = false;
 
-authencesn:
                 t_alg = caam_alg_alloc(ctrldev, &driver_algs[i]);
                 if (IS_ERR(t_alg)) {
                         err = PTR_ERR(t_alg);
@@ -2233,25 +2227,8 @@ authencesn:
                         dev_warn(ctrldev, "%s alg registration failed\n",
                                 t_alg->crypto_alg.cra_driver_name);
                         kfree(t_alg);
-                } else {
+                } else
                         list_add_tail(&t_alg->entry, &priv->alg_list);
-                        if (driver_algs[i].type == CRYPTO_ALG_TYPE_AEAD &&
-                            !memcmp(driver_algs[i].name, "authenc", 7) &&
-                            !done) {
-                                char *name;
-
-                                name = driver_algs[i].name;
-                                memmove(name + 10, name + 7, strlen(name) - 7);
-                                memcpy(name + 7, "esn", 3);
-
-                                name = driver_algs[i].driver_name;
-                                memmove(name + 10, name + 7, strlen(name) - 7);
-                                memcpy(name + 7, "esn", 3);
-
-                                done = true;
-                                goto authencesn;
-                        }
-                }
         }
         if (!list_empty(&priv->alg_list))
                 dev_info(ctrldev, "%s algorithms registered in /proc/crypto\n",
diff --git a/drivers/crypto/caam/compat.h b/drivers/crypto/caam/compat.h
index cf15e7813801..762aeff626ac 100644
--- a/drivers/crypto/caam/compat.h
+++ b/drivers/crypto/caam/compat.h
@@ -23,7 +23,6 @@
 #include <linux/types.h>
 #include <linux/debugfs.h>
 #include <linux/circ_buf.h>
-#include <linux/string.h>
 #include <net/xfrm.h>
 
 #include <crypto/algapi.h>
diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c
index 09b184adf31b..5b2b5e61e4f9 100644
--- a/drivers/crypto/talitos.c
+++ b/drivers/crypto/talitos.c
@@ -38,7 +38,6 @@
 #include <linux/spinlock.h>
 #include <linux/rtnetlink.h>
 #include <linux/slab.h>
-#include <linux/string.h>
 
 #include <crypto/algapi.h>
 #include <crypto/aes.h>
@@ -1974,11 +1973,7 @@ struct talitos_alg_template {
 };
 
 static struct talitos_alg_template driver_algs[] = {
-        /*
-         * AEAD algorithms. These use a single-pass ipsec_esp descriptor.
-         * authencesn(*,*) is also registered, although not present
-         * explicitly here.
-         */
+        /* AEAD algorithms.  These use a single-pass ipsec_esp descriptor */
         {       .type = CRYPTO_ALG_TYPE_AEAD,
                 .alg.crypto = {
                         .cra_name = "authenc(hmac(sha1),cbc(aes))",
@@ -2820,9 +2815,7 @@ static int talitos_probe(struct platform_device *ofdev)
                 if (hw_supports(dev, driver_algs[i].desc_hdr_template)) {
                         struct talitos_crypto_alg *t_alg;
                         char *name = NULL;
-                        bool authenc = false;
 
-authencesn:
                         t_alg = talitos_alg_alloc(dev, &driver_algs[i]);
                         if (IS_ERR(t_alg)) {
                                 err = PTR_ERR(t_alg);
@@ -2837,8 +2830,6 @@ authencesn:
                                 err = crypto_register_alg(
                                                 &t_alg->algt.alg.crypto);
                                 name = t_alg->algt.alg.crypto.cra_driver_name;
-                                authenc = authenc ? !authenc :
-                                          !(bool)memcmp(name, "authenc", 7);
                                 break;
                         case CRYPTO_ALG_TYPE_AHASH:
                                 err = crypto_register_ahash(
@@ -2851,25 +2842,8 @@ authencesn:
                                 dev_err(dev, "%s alg registration failed\n",
                                         name);
                                 kfree(t_alg);
-                        } else {
+                        } else
                                 list_add_tail(&t_alg->entry, &priv->alg_list);
-                                if (authenc) {
-                                        struct crypto_alg *alg =
-                                                &driver_algs[i].alg.crypto;
-
-                                        name = alg->cra_name;
-                                        memmove(name + 10, name + 7,
-                                                strlen(name) - 7);
-                                        memcpy(name + 7, "esn", 3);
-
-                                        name = alg->cra_driver_name;
-                                        memmove(name + 10, name + 7,
-                                                strlen(name) - 7);
-                                        memcpy(name + 7, "esn", 3);
-
-                                        goto authencesn;
-                                }
-                        }
                 }
         }
         if (!list_empty(&priv->alg_list))
diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c
index c599558faeda..43a5329d4483 100644
--- a/drivers/dma/dw_dmac.c
+++ b/drivers/dma/dw_dmac.c
@@ -1001,6 +1001,13 @@ static inline void convert_burst(u32 *maxburst)
                 *maxburst = 0;
 }
 
+static inline void convert_slave_id(struct dw_dma_chan *dwc)
+{
+        struct dw_dma *dw = to_dw_dma(dwc->chan.device);
+
+        dwc->dma_sconfig.slave_id -= dw->request_line_base;
+}
+
 static int
 set_runtime_config(struct dma_chan *chan, struct dma_slave_config *sconfig)
 {
@@ -1015,6 +1022,7 @@ set_runtime_config(struct dma_chan *chan, struct dma_slave_config *sconfig)
 
         convert_burst(&dwc->dma_sconfig.src_maxburst);
         convert_burst(&dwc->dma_sconfig.dst_maxburst);
+        convert_slave_id(dwc);
 
         return 0;
 }
@@ -1276,9 +1284,9 @@ static struct dma_chan *dw_dma_xlate(struct of_phandle_args *dma_spec,
         if (dma_spec->args_count != 3)
                 return NULL;
 
-        fargs.req = be32_to_cpup(dma_spec->args+0);
-        fargs.src = be32_to_cpup(dma_spec->args+1);
-        fargs.dst = be32_to_cpup(dma_spec->args+2);
+        fargs.req = dma_spec->args[0];
+        fargs.src = dma_spec->args[1];
+        fargs.dst = dma_spec->args[2];
 
         if (WARN_ON(fargs.req >= DW_DMA_MAX_NR_REQUESTS ||
                     fargs.src >= dw->nr_masters ||
@@ -1628,6 +1636,7 @@ dw_dma_parse_dt(struct platform_device *pdev)
 
 static int dw_probe(struct platform_device *pdev)
 {
+        const struct platform_device_id *match;
         struct dw_dma_platform_data *pdata;
         struct resource         *io;
         struct dw_dma           *dw;
@@ -1711,6 +1720,11 @@ static int dw_probe(struct platform_device *pdev)
                 memcpy(dw->data_width, pdata->data_width, 4);
         }
 
+        /* Get the base request line if set */
+        match = platform_get_device_id(pdev);
+        if (match)
+                dw->request_line_base = (unsigned int)match->driver_data;
+
         /* Calculate all channel mask before DMA setup */
         dw->all_chan_mask = (1 << nr_channels) - 1;
 
@@ -1906,7 +1920,8 @@ MODULE_DEVICE_TABLE(of, dw_dma_id_table);
 #endif
 
 static const struct platform_device_id dw_dma_ids[] = {
-        { "INTL9C60", 0 },
+        /* Name,        Request Line Base */
+        { "INTL9C60",   (kernel_ulong_t)16 },
         { }
 };
 
diff --git a/drivers/dma/dw_dmac_regs.h b/drivers/dma/dw_dmac_regs.h
index cf0ce5c77d60..4d02c3669b75 100644
--- a/drivers/dma/dw_dmac_regs.h
+++ b/drivers/dma/dw_dmac_regs.h
@@ -247,6 +247,7 @@ struct dw_dma {
         /* hardware configuration */
         unsigned char           nr_masters;
         unsigned char           data_width[4];
+        unsigned int            request_line_base;
 
         struct dw_dma_chan      chan[0];
 };
diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index 910b0116c128..e1d13c463c90 100644
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -2048,12 +2048,18 @@ static int init_csrows(struct mem_ctl_info *mci)
                 edac_dbg(1, "MC node: %d, csrow: %d\n",
                             pvt->mc_node_id, i);
 
-                if (row_dct0)
+                if (row_dct0) {
                         nr_pages = amd64_csrow_nr_pages(pvt, 0, i);
+                        csrow->channels[0]->dimm->nr_pages = nr_pages;
+                }
 
                 /* K8 has only one DCT */
-                if (boot_cpu_data.x86 != 0xf && row_dct1)
-                        nr_pages += amd64_csrow_nr_pages(pvt, 1, i);
+                if (boot_cpu_data.x86 != 0xf && row_dct1) {
+                        int row_dct1_pages = amd64_csrow_nr_pages(pvt, 1, i);
+
+                        csrow->channels[1]->dimm->nr_pages = row_dct1_pages;
+                        nr_pages += row_dct1_pages;
+                }
 
                 mtype = amd64_determine_memory_type(pvt, i);
 
@@ -2072,9 +2078,7 @@ static int init_csrows(struct mem_ctl_info *mci)
                         dimm = csrow->channels[j]->dimm;
                         dimm->mtype = mtype;
                         dimm->edac_mode = edac_mode;
-                        dimm->nr_pages = nr_pages;
                 }
-                csrow->nr_pages = nr_pages;
         }
 
         return empty;
@@ -2419,7 +2423,6 @@ static int amd64_init_one_instance(struct pci_dev *F2)
 
         mci->pvt_info = pvt;
         mci->pdev = &pvt->F2->dev;
-        mci->csbased = 1;
 
         setup_mci_misc_attrs(mci, fam_type);
 
diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c
index cdb81aa73ab7..27e86d938262 100644
--- a/drivers/edac/edac_mc.c
+++ b/drivers/edac/edac_mc.c
@@ -86,7 +86,7 @@ static void edac_mc_dump_dimm(struct dimm_info *dimm, int number)
         edac_dimm_info_location(dimm, location, sizeof(location));
 
         edac_dbg(4, "%s%i: %smapped as virtual row %d, chan %d\n",
-                 dimm->mci->mem_is_per_rank ? "rank" : "dimm",
+                 dimm->mci->csbased ? "rank" : "dimm",
                  number, location, dimm->csrow, dimm->cschannel);
         edac_dbg(4, "  dimm = %p\n", dimm);
         edac_dbg(4, "  dimm->label = '%s'\n", dimm->label);
@@ -341,7 +341,7 @@ struct mem_ctl_info *edac_mc_alloc(unsigned mc_num,
         memcpy(mci->layers, layers, sizeof(*layer) * n_layers);
         mci->nr_csrows = tot_csrows;
         mci->num_cschannel = tot_channels;
-        mci->mem_is_per_rank = per_rank;
+        mci->csbased = per_rank;
 
         /*
          * Alocate and fill the csrow/channels structs
@@ -1235,7 +1235,7 @@ void edac_mc_handle_error(const enum hw_event_mc_err_type type,
                          * incrementing the compat API counters
                          */
                         edac_dbg(4, "%s csrows map: (%d,%d)\n",
-                                 mci->mem_is_per_rank ? "rank" : "dimm",
+                                 mci->csbased ? "rank" : "dimm",
                                  dimm->csrow, dimm->cschannel);
                         if (row == -1)
                                 row = dimm->csrow;
diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c
index 4f4b6137d74e..5899a76eec3b 100644
--- a/drivers/edac/edac_mc_sysfs.c
+++ b/drivers/edac/edac_mc_sysfs.c
@@ -143,7 +143,7 @@ static const char *edac_caps[] = {
  * and the per-dimm/per-rank one
  */
 #define DEVICE_ATTR_LEGACY(_name, _mode, _show, _store) \
-        struct device_attribute dev_attr_legacy_##_name = __ATTR(_name, _mode, _show, _store)
+        static struct device_attribute dev_attr_legacy_##_name = __ATTR(_name, _mode, _show, _store)
 
 struct dev_ch_attribute {
         struct device_attribute attr;
@@ -180,9 +180,6 @@ static ssize_t csrow_size_show(struct device *dev,
         int i;
         u32 nr_pages = 0;
 
-        if (csrow->mci->csbased)
-                return sprintf(data, "%u\n", PAGES_TO_MiB(csrow->nr_pages));
-
         for (i = 0; i < csrow->nr_channels; i++)
                 nr_pages += csrow->channels[i]->dimm->nr_pages;
         return sprintf(data, "%u\n", PAGES_TO_MiB(nr_pages));
@@ -612,7 +609,7 @@ static int edac_create_dimm_object(struct mem_ctl_info *mci,
         device_initialize(&dimm->dev);
 
         dimm->dev.parent = &mci->dev;
-        if (mci->mem_is_per_rank)
+        if (mci->csbased)
                 dev_set_name(&dimm->dev, "rank%d", index);
         else
                 dev_set_name(&dimm->dev, "dimm%d", index);
@@ -778,14 +775,10 @@ static ssize_t mci_size_mb_show(struct device *dev,
         for (csrow_idx = 0; csrow_idx < mci->nr_csrows; csrow_idx++) {
                 struct csrow_info *csrow = mci->csrows[csrow_idx];
 
-                if (csrow->mci->csbased) {
-                        total_pages += csrow->nr_pages;
-                } else {
-                        for (j = 0; j < csrow->nr_channels; j++) {
-                                struct dimm_info *dimm = csrow->channels[j]->dimm;
+                for (j = 0; j < csrow->nr_channels; j++) {
+                        struct dimm_info *dimm = csrow->channels[j]->dimm;
 
-                                total_pages += dimm->nr_pages;
-                        }
+                        total_pages += dimm->nr_pages;
                 }
         }
 
diff --git a/drivers/extcon/extcon-max77693.c b/drivers/extcon/extcon-max77693.c
index b70e3815c459..8f3c947b0029 100644
--- a/drivers/extcon/extcon-max77693.c
+++ b/drivers/extcon/extcon-max77693.c
@@ -32,6 +32,38 @@
 #define DEV_NAME                        "max77693-muic"
 #define DELAY_MS_DEFAULT                20000           /* unit: millisecond */
 
+/*
+ * Default value of MAX77693 register to bring up MUIC device.
+ * If user don't set some initial value for MUIC device through platform data,
+ * extcon-max77693 driver use 'default_init_data' to bring up base operation
+ * of MAX77693 MUIC device.
+ */
+struct max77693_reg_data default_init_data[] = {
+        {
+                /* STATUS2 - [3]ChgDetRun */
+                .addr = MAX77693_MUIC_REG_STATUS2,
+                .data = STATUS2_CHGDETRUN_MASK,
+        }, {
+                /* INTMASK1 - Unmask [3]ADC1KM,[0]ADCM */
+                .addr = MAX77693_MUIC_REG_INTMASK1,
+                .data = INTMASK1_ADC1K_MASK
+                        | INTMASK1_ADC_MASK,
+        }, {
+                /* INTMASK2 - Unmask [0]ChgTypM */
+                .addr = MAX77693_MUIC_REG_INTMASK2,
+                .data = INTMASK2_CHGTYP_MASK,
+        }, {
+                /* INTMASK3 - Mask all of interrupts */
+                .addr = MAX77693_MUIC_REG_INTMASK3,
+                .data = 0x0,
+        }, {
+                /* CDETCTRL2 */
+                .addr = MAX77693_MUIC_REG_CDETCTRL2,
+                .data = CDETCTRL2_VIDRMEN_MASK
+                        | CDETCTRL2_DXOVPEN_MASK,
+        },
+};
+
 enum max77693_muic_adc_debounce_time {
         ADC_DEBOUNCE_TIME_5MS = 0,
         ADC_DEBOUNCE_TIME_10MS,
@@ -1045,8 +1077,9 @@ static int max77693_muic_probe(struct platform_device *pdev)
 {
         struct max77693_dev *max77693 = dev_get_drvdata(pdev->dev.parent);
         struct max77693_platform_data *pdata = dev_get_platdata(max77693->dev);
-        struct max77693_muic_platform_data *muic_pdata = pdata->muic_data;
         struct max77693_muic_info *info;
+        struct max77693_reg_data *init_data;
+        int num_init_data;
         int delay_jiffies;
         int ret;
         int i;
@@ -1145,15 +1178,25 @@ static int max77693_muic_probe(struct platform_device *pdev)
                 goto err_irq;
         }
 
-        /* Initialize MUIC register by using platform data */
-        for (i = 0 ; i < muic_pdata->num_init_data ; i++) {
-                enum max77693_irq_source irq_src = MAX77693_IRQ_GROUP_NR;
+
+        /* Initialize MUIC register by using platform data or default data */
+        if (pdata->muic_data) {
+                init_data = pdata->muic_data->init_data;
+                num_init_data = pdata->muic_data->num_init_data;
+        } else {
+                init_data = default_init_data;
+                num_init_data = ARRAY_SIZE(default_init_data);
+        }
+
+        for (i = 0 ; i < num_init_data ; i++) {
+                enum max77693_irq_source irq_src
+                                = MAX77693_IRQ_GROUP_NR;
 
                 max77693_write_reg(info->max77693->regmap_muic,
-                                muic_pdata->init_data[i].addr,
-                                muic_pdata->init_data[i].data);
+                                init_data[i].addr,
+                                init_data[i].data);
 
-                switch (muic_pdata->init_data[i].addr) {
+                switch (init_data[i].addr) {
                 case MAX77693_MUIC_REG_INTMASK1:
                         irq_src = MUIC_INT1;
                         break;
@@ -1167,22 +1210,40 @@ static int max77693_muic_probe(struct platform_device *pdev)
 
                 if (irq_src < MAX77693_IRQ_GROUP_NR)
                         info->max77693->irq_masks_cur[irq_src]
-                                = muic_pdata->init_data[i].data;
+                                = init_data[i].data;
         }
 
-        /*
-         * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB
-         * h/w path of COMP2/COMN1 on CONTROL1 register.
-         */
-        if (muic_pdata->path_uart)
-                info->path_uart = muic_pdata->path_uart;
-        else
-                info->path_uart = CONTROL1_SW_UART;
+        if (pdata->muic_data) {
+                struct max77693_muic_platform_data *muic_pdata = pdata->muic_data;
 
-        if (muic_pdata->path_usb)
-                info->path_usb = muic_pdata->path_usb;
-        else
+                /*
+                 * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB
+                 * h/w path of COMP2/COMN1 on CONTROL1 register.
+                 */
+                if (muic_pdata->path_uart)
+                        info->path_uart = muic_pdata->path_uart;
+                else
+                        info->path_uart = CONTROL1_SW_UART;
+
+                if (muic_pdata->path_usb)
+                        info->path_usb = muic_pdata->path_usb;
+                else
+                        info->path_usb = CONTROL1_SW_USB;
+
+                /*
+                 * Default delay time for detecting cable state
+                 * after certain time.
+                 */
+                if (muic_pdata->detcable_delay_ms)
+                        delay_jiffies =
+                                msecs_to_jiffies(muic_pdata->detcable_delay_ms);
+                else
+                        delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT);
+        } else {
                 info->path_usb = CONTROL1_SW_USB;
+                info->path_uart = CONTROL1_SW_UART;
+                delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT);
+        }
 
         /* Set initial path for UART */
          max77693_muic_set_path(info, info->path_uart, true);
@@ -1208,10 +1269,6 @@ static int max77693_muic_probe(struct platform_device *pdev)
          * driver should notify cable state to upper layer.
          */
         INIT_DELAYED_WORK(&info->wq_detcable, max77693_muic_detect_cable_wq);
-        if (muic_pdata->detcable_delay_ms)
-                delay_jiffies = msecs_to_jiffies(muic_pdata->detcable_delay_ms);
-        else
-                delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT);
         schedule_delayed_work(&info->wq_detcable, delay_jiffies);
 
         return ret;
diff --git a/drivers/extcon/extcon-max8997.c b/drivers/extcon/extcon-max8997.c
index e636d950ad6c..69641bcae325 100644
--- a/drivers/extcon/extcon-max8997.c
+++ b/drivers/extcon/extcon-max8997.c
@@ -712,29 +712,45 @@ static int max8997_muic_probe(struct platform_device *pdev)
                 goto err_irq;
         }
 
-        /* Initialize registers according to platform data */
         if (pdata->muic_pdata) {
-                struct max8997_muic_platform_data *mdata = info->muic_pdata;
-
-                for (i = 0; i < mdata->num_init_data; i++) {
-                        max8997_write_reg(info->muic, mdata->init_data[i].addr,
-                                        mdata->init_data[i].data);
+                struct max8997_muic_platform_data *muic_pdata
+                        = pdata->muic_pdata;
+
+                /* Initialize registers according to platform data */
+                for (i = 0; i < muic_pdata->num_init_data; i++) {
+                        max8997_write_reg(info->muic,
+                                        muic_pdata->init_data[i].addr,
+                                        muic_pdata->init_data[i].data);
                 }
-        }
 
-        /*
-         * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB
-         * h/w path of COMP2/COMN1 on CONTROL1 register.
-         */
-        if (pdata->muic_pdata->path_uart)
-                info->path_uart = pdata->muic_pdata->path_uart;
-        else
-                info->path_uart = CONTROL1_SW_UART;
+                /*
+                 * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB
+                 * h/w path of COMP2/COMN1 on CONTROL1 register.
+                 */
+                if (muic_pdata->path_uart)
+                        info->path_uart = muic_pdata->path_uart;
+                else
+                        info->path_uart = CONTROL1_SW_UART;
 
-        if (pdata->muic_pdata->path_usb)
-                info->path_usb = pdata->muic_pdata->path_usb;
-        else
+                if (muic_pdata->path_usb)
+                        info->path_usb = muic_pdata->path_usb;
+                else
+                        info->path_usb = CONTROL1_SW_USB;
+
+                /*
+                 * Default delay time for detecting cable state
+                 * after certain time.
+                 */
+                if (muic_pdata->detcable_delay_ms)
+                        delay_jiffies =
+                                msecs_to_jiffies(muic_pdata->detcable_delay_ms);
+                else
+                        delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT);
+        } else {
+                info->path_uart = CONTROL1_SW_UART;
                 info->path_usb = CONTROL1_SW_USB;
+                delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT);
+        }
 
         /* Set initial path for UART */
          max8997_muic_set_path(info, info->path_uart, true);
@@ -751,10 +767,6 @@ static int max8997_muic_probe(struct platform_device *pdev)
          * driver should notify cable state to upper layer.
          */
         INIT_DELAYED_WORK(&info->wq_detcable, max8997_muic_detect_cable_wq);
-        if (pdata->muic_pdata->detcable_delay_ms)
-                delay_jiffies = msecs_to_jiffies(pdata->muic_pdata->detcable_delay_ms);
-        else
-                delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT);
         schedule_delayed_work(&info->wq_detcable, delay_jiffies);
 
         return 0;
diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index 9b00072a020f..42c759a4d047 100644
--- a/drivers/firmware/Kconfig
+++ b/drivers/firmware/Kconfig
@@ -53,6 +53,24 @@ config EFI_VARS
           Subsequent efibootmgr releases may be found at:
           <http://linux.dell.com/efibootmgr>
 
+config EFI_VARS_PSTORE
+        bool "Register efivars backend for pstore"
+        depends on EFI_VARS && PSTORE
+        default y
+        help
+          Say Y here to enable use efivars as a backend to pstore. This
+          will allow writing console messages, crash dumps, or anything
+          else supported by pstore to EFI variables.
+
+config EFI_VARS_PSTORE_DEFAULT_DISABLE
+        bool "Disable using efivars as a pstore backend by default"
+        depends on EFI_VARS_PSTORE
+        default n
+        help
+          Saying Y here will disable the use of efivars as a storage
+          backend for pstore by default. This setting can be overridden
+          using the efivars module's pstore_disable parameter.
+
 config EFI_PCDP
         bool "Console device selection via EFI PCDP or HCDP table"
         depends on ACPI && EFI && IA64
diff --git a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c
index fe62aa392239..7acafb80fd4c 100644
--- a/drivers/firmware/efivars.c
+++ b/drivers/firmware/efivars.c
@@ -103,6 +103,11 @@ MODULE_VERSION(EFIVARS_VERSION);
  */
 #define GUID_LEN 36
 
+static bool efivars_pstore_disable =
+        IS_ENABLED(CONFIG_EFI_VARS_PSTORE_DEFAULT_DISABLE);
+
+module_param_named(pstore_disable, efivars_pstore_disable, bool, 0644);
+
 /*
  * The maximum size of VariableName + Data = 1024
  * Therefore, it's reasonable to save that much
@@ -165,6 +170,7 @@ efivar_create_sysfs_entry(struct efivars *efivars,
 
 static void efivar_update_sysfs_entries(struct work_struct *);
 static DECLARE_WORK(efivar_work, efivar_update_sysfs_entries);
+static bool efivar_wq_enabled = true;
 
 /* Return the number of unicode characters in data */
 static unsigned long
@@ -1309,9 +1315,7 @@ static const struct inode_operations efivarfs_dir_inode_operations = {
         .create = efivarfs_create,
 };
 
-static struct pstore_info efi_pstore_info;
-
-#ifdef CONFIG_PSTORE
+#ifdef CONFIG_EFI_VARS_PSTORE
 
 static int efi_pstore_open(struct pstore_info *psi)
 {
@@ -1441,7 +1445,7 @@ static int efi_pstore_write(enum pstore_type_id type,
 
         spin_unlock_irqrestore(&efivars->lock, flags);
 
-        if (reason == KMSG_DUMP_OOPS)
+        if (reason == KMSG_DUMP_OOPS && efivar_wq_enabled)
                 schedule_work(&efivar_work);
 
         *id = part;
@@ -1514,38 +1518,6 @@ static int efi_pstore_erase(enum pstore_type_id type, u64 id, int count,
 
         return 0;
 }
-#else
-static int efi_pstore_open(struct pstore_info *psi)
-{
-        return 0;
-}
-
-static int efi_pstore_close(struct pstore_info *psi)
-{
-        return 0;
-}
-
-static ssize_t efi_pstore_read(u64 *id, enum pstore_type_id *type, int *count,
-                               struct timespec *timespec,
-                               char **buf, struct pstore_info *psi)
-{
-        return -1;
-}
-
-static int efi_pstore_write(enum pstore_type_id type,
-                enum kmsg_dump_reason reason, u64 *id,
-                unsigned int part, int count, size_t size,
-                struct pstore_info *psi)
-{
-        return 0;
-}
-
-static int efi_pstore_erase(enum pstore_type_id type, u64 id, int count,
-                            struct timespec time, struct pstore_info *psi)
-{
-        return 0;
-}
-#endif
 
 static struct pstore_info efi_pstore_info = {
         .owner          = THIS_MODULE,
@@ -1557,6 +1529,24 @@ static struct pstore_info efi_pstore_info = {
         .erase          = efi_pstore_erase,
 };
 
+static void efivar_pstore_register(struct efivars *efivars)
+{
+        efivars->efi_pstore_info = efi_pstore_info;
+        efivars->efi_pstore_info.buf = kmalloc(4096, GFP_KERNEL);
+        if (efivars->efi_pstore_info.buf) {
+                efivars->efi_pstore_info.bufsize = 1024;
+                efivars->efi_pstore_info.data = efivars;
+                spin_lock_init(&efivars->efi_pstore_info.buf_lock);
+                pstore_register(&efivars->efi_pstore_info);
+        }
+}
+#else
+static void efivar_pstore_register(struct efivars *efivars)
+{
+        return;
+}
+#endif
+
 static ssize_t efivar_create(struct file *filp, struct kobject *kobj,
                              struct bin_attribute *bin_attr,
                              char *buf, loff_t pos, size_t count)
@@ -1716,6 +1706,31 @@ static bool variable_is_present(efi_char16_t *variable_name, efi_guid_t *vendor)
         return found;
 }
 
+/*
+ * Returns the size of variable_name, in bytes, including the
+ * terminating NULL character, or variable_name_size if no NULL
+ * character is found among the first variable_name_size bytes.
+ */
+static unsigned long var_name_strnsize(efi_char16_t *variable_name,
+                                       unsigned long variable_name_size)
+{
+        unsigned long len;
+        efi_char16_t c;
+
+        /*
+         * The variable name is, by definition, a NULL-terminated
+         * string, so make absolutely sure that variable_name_size is
+         * the value we expect it to be. If not, return the real size.
+         */
+        for (len = 2; len <= variable_name_size; len += sizeof(c)) {
+                c = variable_name[(len / sizeof(c)) - 1];
+                if (!c)
+                        break;
+        }
+
+        return min(len, variable_name_size);
+}
+
 static void efivar_update_sysfs_entries(struct work_struct *work)
 {
         struct efivars *efivars = &__efivars;
@@ -1756,10 +1771,13 @@ static void efivar_update_sysfs_entries(struct work_struct *work)
                 if (!found) {
                         kfree(variable_name);
                         break;
-                } else
+                } else {
+                        variable_name_size = var_name_strnsize(variable_name,
+                                                               variable_name_size);
                         efivar_create_sysfs_entry(efivars,
                                                   variable_name_size,
                                                   variable_name, &vendor);
+                }
         }
 }
 
@@ -1958,6 +1976,35 @@ void unregister_efivars(struct efivars *efivars)
 }
 EXPORT_SYMBOL_GPL(unregister_efivars);
 
+/*
+ * Print a warning when duplicate EFI variables are encountered and
+ * disable the sysfs workqueue since the firmware is buggy.
+ */
+static void dup_variable_bug(efi_char16_t *s16, efi_guid_t *vendor_guid,
+                             unsigned long len16)
+{
+        size_t i, len8 = len16 / sizeof(efi_char16_t);
+        char *s8;
+
+        /*
+         * Disable the workqueue since the algorithm it uses for
+         * detecting new variables won't work with this buggy
+         * implementation of GetNextVariableName().
+         */
+        efivar_wq_enabled = false;
+
+        s8 = kzalloc(len8, GFP_KERNEL);
+        if (!s8)
+                return;
+
+        for (i = 0; i < len8; i++)
+                s8[i] = s16[i];
+
+        printk(KERN_WARNING "efivars: duplicate variable: %s-%pUl\n",
+               s8, vendor_guid);
+        kfree(s8);
+}
+
 int register_efivars(struct efivars *efivars,
                      const struct efivar_operations *ops,
                      struct kobject *parent_kobj)
@@ -2006,6 +2053,24 @@ int register_efivars(struct efivars *efivars,
                                                 &vendor_guid);
                 switch (status) {
                 case EFI_SUCCESS:
+                        variable_name_size = var_name_strnsize(variable_name,
+                                                               variable_name_size);
+
+                        /*
+                         * Some firmware implementations return the
+                         * same variable name on multiple calls to
+                         * get_next_variable(). Terminate the loop
+                         * immediately as there is no guarantee that
+                         * we'll ever see a different variable name,
+                         * and may end up looping here forever.
+                         */
+                        if (variable_is_present(variable_name, &vendor_guid)) {
+                                dup_variable_bug(variable_name, &vendor_guid,
+                                                 variable_name_size);
+                                status = EFI_NOT_FOUND;
+                                break;
+                        }
+
                         efivar_create_sysfs_entry(efivars,
                                                   variable_name_size,
                                                   variable_name,
@@ -2025,15 +2090,8 @@ int register_efivars(struct efivars *efivars,
         if (error)
                 unregister_efivars(efivars);
 
-        efivars->efi_pstore_info = efi_pstore_info;
-
-        efivars->efi_pstore_info.buf = kmalloc(4096, GFP_KERNEL);
-        if (efivars->efi_pstore_info.buf) {
-                efivars->efi_pstore_info.bufsize = 1024;
-                efivars->efi_pstore_info.data = efivars;
-                spin_lock_init(&efivars->efi_pstore_info.buf_lock);
-                pstore_register(&efivars->efi_pstore_info);
-        }
+        if (!efivars_pstore_disable)
+                efivar_pstore_register(efivars);
 
         register_filesystem(&efivarfs_type);
 
diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c
index a71a54a3e3f7..5150df6cba08 100644
--- a/drivers/gpio/gpiolib-of.c
+++ b/drivers/gpio/gpiolib-of.c
@@ -193,7 +193,7 @@ static void of_gpiochip_add_pin_range(struct gpio_chip *chip)
         if (!np)
                 return;
 
-        do {
+        for (;; index++) {
                 ret = of_parse_phandle_with_args(np, "gpio-ranges",
                                 "#gpio-range-cells", index, &pinspec);
                 if (ret)
@@ -222,8 +222,7 @@ static void of_gpiochip_add_pin_range(struct gpio_chip *chip)
 
                 if (ret)
                         break;
-
-        } while (index++);
+        }
 }
 
 #else
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index c194f4e680ad..e2acfdbf7d3c 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -1634,7 +1634,7 @@ static struct drm_display_mode *drm_mode_detailed(struct drm_device *dev,
         unsigned vblank = (pt->vactive_vblank_hi & 0xf) << 8 | pt->vblank_lo;
         unsigned hsync_offset = (pt->hsync_vsync_offset_pulse_width_hi & 0xc0) << 2 | pt->hsync_offset_lo;
         unsigned hsync_pulse_width = (pt->hsync_vsync_offset_pulse_width_hi & 0x30) << 4 | pt->hsync_pulse_width_lo;
-        unsigned vsync_offset = (pt->hsync_vsync_offset_pulse_width_hi & 0xc) >> 2 | pt->vsync_offset_pulse_width_lo >> 4;
+        unsigned vsync_offset = (pt->hsync_vsync_offset_pulse_width_hi & 0xc) << 2 | pt->vsync_offset_pulse_width_lo >> 4;
         unsigned vsync_pulse_width = (pt->hsync_vsync_offset_pulse_width_hi & 0x3) << 4 | (pt->vsync_offset_pulse_width_lo & 0xf);
 
         /* ignore tiny modes */
@@ -1715,6 +1715,7 @@ set_size:
         }
 
         mode->type = DRM_MODE_TYPE_DRIVER;
+        mode->vrefresh = drm_mode_vrefresh(mode);
         drm_mode_set_name(mode);
 
         return mode;
diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
index 36493ce71f9a..98cc14725ba9 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
@@ -38,11 +38,12 @@
 /* position control register for hardware window 0, 2 ~ 4.*/
 #define VIDOSD_A(win)           (VIDOSD_BASE + 0x00 + (win) * 16)
 #define VIDOSD_B(win)           (VIDOSD_BASE + 0x04 + (win) * 16)
-/* size control register for hardware window 0. */
-#define VIDOSD_C_SIZE_W0        (VIDOSD_BASE + 0x08)
-/* alpha control register for hardware window 1 ~ 4. */
-#define VIDOSD_C(win)           (VIDOSD_BASE + 0x18 + (win) * 16)
-/* size control register for hardware window 1 ~ 4. */
+/*
+ * size control register for hardware windows 0 and alpha control register
+ * for hardware windows 1 ~ 4
+ */
+#define VIDOSD_C(win)           (VIDOSD_BASE + 0x08 + (win) * 16)
+/* size control register for hardware windows 1 ~ 2. */
 #define VIDOSD_D(win)           (VIDOSD_BASE + 0x0C + (win) * 16)
 
 #define VIDWx_BUF_START(win, buf)       (VIDW_BUF_START(buf) + (win) * 8)
@@ -50,9 +51,9 @@
 #define VIDWx_BUF_SIZE(win, buf)        (VIDW_BUF_SIZE(buf) + (win) * 4)
 
 /* color key control register for hardware window 1 ~ 4. */
-#define WKEYCON0_BASE(x)                ((WKEYCON0 + 0x140) + (x * 8))
+#define WKEYCON0_BASE(x)                ((WKEYCON0 + 0x140) + ((x - 1) * 8))
 /* color key value register for hardware window 1 ~ 4. */
-#define WKEYCON1_BASE(x)                ((WKEYCON1 + 0x140) + (x * 8))
+#define WKEYCON1_BASE(x)                ((WKEYCON1 + 0x140) + ((x - 1) * 8))
 
 /* FIMD has totally five hardware windows. */
 #define WINDOWS_NR      5
@@ -109,9 +110,9 @@ struct fimd_context {
 
 #ifdef CONFIG_OF
 static const struct of_device_id fimd_driver_dt_match[] = {
-        { .compatible = "samsung,exynos4-fimd",
+        { .compatible = "samsung,exynos4210-fimd",
           .data = &exynos4_fimd_driver_data },
-        { .compatible = "samsung,exynos5-fimd",
+        { .compatible = "samsung,exynos5250-fimd",
           .data = &exynos5_fimd_driver_data },
         {},
 };
@@ -581,7 +582,7 @@ static void fimd_win_commit(struct device *dev, int zpos)
         if (win != 3 && win != 4) {
                 u32 offset = VIDOSD_D(win);
                 if (win == 0)
-                        offset = VIDOSD_C_SIZE_W0;
+                        offset = VIDOSD_C(win);
                 val = win_data->ovl_width * win_data->ovl_height;
                 writel(val, ctx->regs + offset);
 
diff --git a/drivers/gpu/drm/exynos/exynos_drm_g2d.c b/drivers/gpu/drm/exynos/exynos_drm_g2d.c
index 3b0da0378acf..47a493c8a71f 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_g2d.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_g2d.c
@@ -48,8 +48,14 @@
 
 /* registers for base address */
 #define G2D_SRC_BASE_ADDR               0x0304
+#define G2D_SRC_COLOR_MODE              0x030C
+#define G2D_SRC_LEFT_TOP                0x0310
+#define G2D_SRC_RIGHT_BOTTOM            0x0314
 #define G2D_SRC_PLANE2_BASE_ADDR        0x0318
 #define G2D_DST_BASE_ADDR               0x0404
+#define G2D_DST_COLOR_MODE              0x040C
+#define G2D_DST_LEFT_TOP                0x0410
+#define G2D_DST_RIGHT_BOTTOM            0x0414
 #define G2D_DST_PLANE2_BASE_ADDR        0x0418
 #define G2D_PAT_BASE_ADDR               0x0500
 #define G2D_MSK_BASE_ADDR               0x0520
@@ -82,7 +88,7 @@
 #define G2D_DMA_LIST_DONE_COUNT_OFFSET  17
 
 /* G2D_DMA_HOLD_CMD */
-#define G2D_USET_HOLD                   (1 << 2)
+#define G2D_USER_HOLD                   (1 << 2)
 #define G2D_LIST_HOLD                   (1 << 1)
 #define G2D_BITBLT_HOLD                 (1 << 0)
 
@@ -91,13 +97,27 @@
 #define G2D_START_NHOLT                 (1 << 1)
 #define G2D_START_BITBLT                (1 << 0)
 
+/* buffer color format */
+#define G2D_FMT_XRGB8888                0
+#define G2D_FMT_ARGB8888                1
+#define G2D_FMT_RGB565                  2
+#define G2D_FMT_XRGB1555                3
+#define G2D_FMT_ARGB1555                4
+#define G2D_FMT_XRGB4444                5
+#define G2D_FMT_ARGB4444                6
+#define G2D_FMT_PACKED_RGB888           7
+#define G2D_FMT_A8                      11
+#define G2D_FMT_L8                      12
+
+/* buffer valid length */
+#define G2D_LEN_MIN                     1
+#define G2D_LEN_MAX                     8000
+
 #define G2D_CMDLIST_SIZE                (PAGE_SIZE / 4)
 #define G2D_CMDLIST_NUM                 64
 #define G2D_CMDLIST_POOL_SIZE           (G2D_CMDLIST_SIZE * G2D_CMDLIST_NUM)
 #define G2D_CMDLIST_DATA_NUM            (G2D_CMDLIST_SIZE / sizeof(u32) - 2)
 
-#define MAX_BUF_ADDR_NR                 6
-
 /* maximum buffer pool size of userptr is 64MB as default */
 #define MAX_POOL                (64 * 1024 * 1024)
 
@@ -106,6 +126,17 @@ enum {
         BUF_TYPE_USERPTR,
 };
 
+enum g2d_reg_type {
+        REG_TYPE_NONE = -1,
+        REG_TYPE_SRC,
+        REG_TYPE_SRC_PLANE2,
+        REG_TYPE_DST,
+        REG_TYPE_DST_PLANE2,
+        REG_TYPE_PAT,
+        REG_TYPE_MSK,
+        MAX_REG_TYPE_NR
+};
+
 /* cmdlist data structure */
 struct g2d_cmdlist {
         u32             head;
@@ -113,6 +144,42 @@ struct g2d_cmdlist {
         u32             last;   /* last data offset */
 };
 
+/*
+ * A structure of buffer description
+ *
+ * @format: color format
+ * @left_x: the x coordinates of left top corner
+ * @top_y: the y coordinates of left top corner
+ * @right_x: the x coordinates of right bottom corner
+ * @bottom_y: the y coordinates of right bottom corner
+ *
+ */
+struct g2d_buf_desc {
+        unsigned int    format;
+        unsigned int    left_x;
+        unsigned int    top_y;
+        unsigned int    right_x;
+        unsigned int    bottom_y;
+};
+
+/*
+ * A structure of buffer information
+ *
+ * @map_nr: manages the number of mapped buffers
+ * @reg_types: stores regitster type in the order of requested command
+ * @handles: stores buffer handle in its reg_type position
+ * @types: stores buffer type in its reg_type position
+ * @descs: stores buffer description in its reg_type position
+ *
+ */
+struct g2d_buf_info {
+        unsigned int            map_nr;
+        enum g2d_reg_type       reg_types[MAX_REG_TYPE_NR];
+        unsigned long           handles[MAX_REG_TYPE_NR];
+        unsigned int            types[MAX_REG_TYPE_NR];
+        struct g2d_buf_desc     descs[MAX_REG_TYPE_NR];
+};
+
 struct drm_exynos_pending_g2d_event {
         struct drm_pending_event        base;
         struct drm_exynos_g2d_event     event;
@@ -131,14 +198,11 @@ struct g2d_cmdlist_userptr {
         bool                    in_pool;
         bool                    out_of_list;
 };
-
 struct g2d_cmdlist_node {
         struct list_head        list;
         struct g2d_cmdlist      *cmdlist;
-        unsigned int            map_nr;
-        unsigned long           handles[MAX_BUF_ADDR_NR];
-        unsigned int            obj_type[MAX_BUF_ADDR_NR];
         dma_addr_t              dma_addr;
+        struct g2d_buf_info     buf_info;
 
         struct drm_exynos_pending_g2d_event     *event;
 };
@@ -188,6 +252,7 @@ static int g2d_init_cmdlist(struct g2d_data *g2d)
         struct exynos_drm_subdrv *subdrv = &g2d->subdrv;
         int nr;
         int ret;
+        struct g2d_buf_info *buf_info;
 
         init_dma_attrs(&g2d->cmdlist_dma_attrs);
         dma_set_attr(DMA_ATTR_WRITE_COMBINE, &g2d->cmdlist_dma_attrs);
@@ -209,11 +274,17 @@ static int g2d_init_cmdlist(struct g2d_data *g2d)
         }
 
         for (nr = 0; nr < G2D_CMDLIST_NUM; nr++) {
+                unsigned int i;
+
                 node[nr].cmdlist =
                         g2d->cmdlist_pool_virt + nr * G2D_CMDLIST_SIZE;
                 node[nr].dma_addr =
                         g2d->cmdlist_pool + nr * G2D_CMDLIST_SIZE;
 
+                buf_info = &node[nr].buf_info;
+                for (i = 0; i < MAX_REG_TYPE_NR; i++)
+                        buf_info->reg_types[i] = REG_TYPE_NONE;
+
                 list_add_tail(&node[nr].list, &g2d->free_cmdlist);
         }
 
@@ -450,7 +521,7 @@ static dma_addr_t *g2d_userptr_get_dma_addr(struct drm_device *drm_dev,
                                                 DMA_BIDIRECTIONAL);
         if (ret < 0) {
                 DRM_ERROR("failed to map sgt with dma region.\n");
-                goto err_free_sgt;
+                goto err_sg_free_table;
         }
 
         g2d_userptr->dma_addr = sgt->sgl[0].dma_address;
@@ -467,8 +538,10 @@ static dma_addr_t *g2d_userptr_get_dma_addr(struct drm_device *drm_dev,
 
         return &g2d_userptr->dma_addr;
 
-err_free_sgt:
+err_sg_free_table:
         sg_free_table(sgt);
+
+err_free_sgt:
         kfree(sgt);
         sgt = NULL;
 
@@ -506,36 +579,172 @@ static void g2d_userptr_free_all(struct drm_device *drm_dev,
         g2d->current_pool = 0;
 }
 
+static enum g2d_reg_type g2d_get_reg_type(int reg_offset)
+{
+        enum g2d_reg_type reg_type;
+
+        switch (reg_offset) {
+        case G2D_SRC_BASE_ADDR:
+        case G2D_SRC_COLOR_MODE:
+        case G2D_SRC_LEFT_TOP:
+        case G2D_SRC_RIGHT_BOTTOM:
+                reg_type = REG_TYPE_SRC;
+                break;
+        case G2D_SRC_PLANE2_BASE_ADDR:
+                reg_type = REG_TYPE_SRC_PLANE2;
+                break;
+        case G2D_DST_BASE_ADDR:
+        case G2D_DST_COLOR_MODE:
+        case G2D_DST_LEFT_TOP:
+        case G2D_DST_RIGHT_BOTTOM:
+                reg_type = REG_TYPE_DST;
+                break;
+        case G2D_DST_PLANE2_BASE_ADDR:
+                reg_type = REG_TYPE_DST_PLANE2;
+                break;
+        case G2D_PAT_BASE_ADDR:
+                reg_type = REG_TYPE_PAT;
+                break;
+        case G2D_MSK_BASE_ADDR:
+                reg_type = REG_TYPE_MSK;
+                break;
+        default:
+                reg_type = REG_TYPE_NONE;
+                DRM_ERROR("Unknown register offset![%d]\n", reg_offset);
+                break;
+        };
+
+        return reg_type;
+}
+
+static unsigned long g2d_get_buf_bpp(unsigned int format)
+{
+        unsigned long bpp;
+
+        switch (format) {
+        case G2D_FMT_XRGB8888:
+        case G2D_FMT_ARGB8888:
+                bpp = 4;
+                break;
+        case G2D_FMT_RGB565:
+        case G2D_FMT_XRGB1555:
+        case G2D_FMT_ARGB1555:
+        case G2D_FMT_XRGB4444:
+        case G2D_FMT_ARGB4444:
+                bpp = 2;
+                break;
+        case G2D_FMT_PACKED_RGB888:
+                bpp = 3;
+                break;
+        default:
+                bpp = 1;
+                break;
+        }
+
+        return bpp;
+}
+
+static bool g2d_check_buf_desc_is_valid(struct g2d_buf_desc *buf_desc,
+                                                enum g2d_reg_type reg_type,
+                                                unsigned long size)
+{
+        unsigned int width, height;
+        unsigned long area;
+
+        /*
+         * check source and destination buffers only.
+         * so the others are always valid.
+         */
+        if (reg_type != REG_TYPE_SRC && reg_type != REG_TYPE_DST)
+                return true;
+
+        width = buf_desc->right_x - buf_desc->left_x;
+        if (width < G2D_LEN_MIN || width > G2D_LEN_MAX) {
+                DRM_ERROR("width[%u] is out of range!\n", width);
+                return false;
+        }
+
+        height = buf_desc->bottom_y - buf_desc->top_y;
+        if (height < G2D_LEN_MIN || height > G2D_LEN_MAX) {
+                DRM_ERROR("height[%u] is out of range!\n", height);
+                return false;
+        }
+
+        area = (unsigned long)width * (unsigned long)height *
+                                        g2d_get_buf_bpp(buf_desc->format);
+        if (area > size) {
+                DRM_ERROR("area[%lu] is out of range[%lu]!\n", area, size);
+                return false;
+        }
+
+        return true;
+}
+
 static int g2d_map_cmdlist_gem(struct g2d_data *g2d,
                                 struct g2d_cmdlist_node *node,
                                 struct drm_device *drm_dev,
                                 struct drm_file *file)
 {
         struct g2d_cmdlist *cmdlist = node->cmdlist;
+        struct g2d_buf_info *buf_info = &node->buf_info;
         int offset;
+        int ret;
         int i;
 
-        for (i = 0; i < node->map_nr; i++) {
+        for (i = 0; i < buf_info->map_nr; i++) {
+                struct g2d_buf_desc *buf_desc;
+                enum g2d_reg_type reg_type;
+                int reg_pos;
                 unsigned long handle;
                 dma_addr_t *addr;
 
-                offset = cmdlist->last - (i * 2 + 1);
-                handle = cmdlist->data[offset];
+                reg_pos = cmdlist->last - 2 * (i + 1);
+
+                offset = cmdlist->data[reg_pos];
+                handle = cmdlist->data[reg_pos + 1];
+
+                reg_type = g2d_get_reg_type(offset);
+                if (reg_type == REG_TYPE_NONE) {
+                        ret = -EFAULT;
+                        goto err;
+                }
+
+                buf_desc = &buf_info->descs[reg_type];
+
+                if (buf_info->types[reg_type] == BUF_TYPE_GEM) {
+                        unsigned long size;
+
+                        size = exynos_drm_gem_get_size(drm_dev, handle, file);
+                        if (!size) {
+                                ret = -EFAULT;
+                                goto err;
+                        }
+
+                        if (!g2d_check_buf_desc_is_valid(buf_desc, reg_type,
+                                                                        size)) {
+                                ret = -EFAULT;
+                                goto err;
+                        }
 
-                if (node->obj_type[i] == BUF_TYPE_GEM) {
                         addr = exynos_drm_gem_get_dma_addr(drm_dev, handle,
                                                                 file);
                         if (IS_ERR(addr)) {
-                                node->map_nr = i;
-                                return -EFAULT;
+                                ret = -EFAULT;
+                                goto err;
                         }
                 } else {
                         struct drm_exynos_g2d_userptr g2d_userptr;
 
                         if (copy_from_user(&g2d_userptr, (void __user *)handle,
                                 sizeof(struct drm_exynos_g2d_userptr))) {
-                                node->map_nr = i;
-                                return -EFAULT;
+                                ret = -EFAULT;
+                                goto err;
+                        }
+
+                        if (!g2d_check_buf_desc_is_valid(buf_desc, reg_type,
+                                                        g2d_userptr.size)) {
+                                ret = -EFAULT;
+                                goto err;
                         }
 
                         addr = g2d_userptr_get_dma_addr(drm_dev,
@@ -544,16 +753,21 @@ static int g2d_map_cmdlist_gem(struct g2d_data *g2d,
                                                         file,
                                                         &handle);
                         if (IS_ERR(addr)) {
-                                node->map_nr = i;
-                                return -EFAULT;
+                                ret = -EFAULT;
+                                goto err;
                         }
                 }
 
-                cmdlist->data[offset] = *addr;
-                node->handles[i] = handle;
+                cmdlist->data[reg_pos + 1] = *addr;
+                buf_info->reg_types[i] = reg_type;
+                buf_info->handles[reg_type] = handle;
         }
 
         return 0;
+
+err:
+        buf_info->map_nr = i;
+        return ret;
 }
 
 static void g2d_unmap_cmdlist_gem(struct g2d_data *g2d,
@@ -561,22 +775,33 @@ static void g2d_unmap_cmdlist_gem(struct g2d_data *g2d,
                                   struct drm_file *filp)
 {
         struct exynos_drm_subdrv *subdrv = &g2d->subdrv;
+        struct g2d_buf_info *buf_info = &node->buf_info;
         int i;
 
-        for (i = 0; i < node->map_nr; i++) {
-                unsigned long handle = node->handles[i];
+        for (i = 0; i < buf_info->map_nr; i++) {
+                struct g2d_buf_desc *buf_desc;
+                enum g2d_reg_type reg_type;
+                unsigned long handle;
+
+                reg_type = buf_info->reg_types[i];
+
+                buf_desc = &buf_info->descs[reg_type];
+                handle = buf_info->handles[reg_type];
 
-                if (node->obj_type[i] == BUF_TYPE_GEM)
+                if (buf_info->types[reg_type] == BUF_TYPE_GEM)
                         exynos_drm_gem_put_dma_addr(subdrv->drm_dev, handle,
                                                         filp);
                 else
                         g2d_userptr_put_dma_addr(subdrv->drm_dev, handle,
                                                         false);
 
-                node->handles[i] = 0;
+                buf_info->reg_types[i] = REG_TYPE_NONE;
+                buf_info->handles[reg_type] = 0;
+                buf_info->types[reg_type] = 0;
+                memset(buf_desc, 0x00, sizeof(*buf_desc));
         }
 
-        node->map_nr = 0;
+        buf_info->map_nr = 0;
 }
 
 static void g2d_dma_start(struct g2d_data *g2d,
@@ -589,10 +814,6 @@ static void g2d_dma_start(struct g2d_data *g2d,
         pm_runtime_get_sync(g2d->dev);
         clk_enable(g2d->gate_clk);
 
-        /* interrupt enable */
-        writel_relaxed(G2D_INTEN_ACF | G2D_INTEN_UCF | G2D_INTEN_GCF,
-                        g2d->regs + G2D_INTEN);
-
         writel_relaxed(node->dma_addr, g2d->regs + G2D_DMA_SFR_BASE_ADDR);
         writel_relaxed(G2D_DMA_START, g2d->regs + G2D_DMA_COMMAND);
 }
@@ -643,7 +864,6 @@ static void g2d_runqueue_worker(struct work_struct *work)
         struct g2d_data *g2d = container_of(work, struct g2d_data,
                                             runqueue_work);
 
-
         mutex_lock(&g2d->runqueue_mutex);
         clk_disable(g2d->gate_clk);
         pm_runtime_put_sync(g2d->dev);
@@ -724,20 +944,14 @@ static int g2d_check_reg_offset(struct device *dev,
         int i;
 
         for (i = 0; i < nr; i++) {
-                index = cmdlist->last - 2 * (i + 1);
+                struct g2d_buf_info *buf_info = &node->buf_info;
+                struct g2d_buf_desc *buf_desc;
+                enum g2d_reg_type reg_type;
+                unsigned long value;
 
-                if (for_addr) {
-                        /* check userptr buffer type. */
-                        reg_offset = (cmdlist->data[index] &
-                                        ~0x7fffffff) >> 31;
-                        if (reg_offset) {
-                                node->obj_type[i] = BUF_TYPE_USERPTR;
-                                cmdlist->data[index] &= ~G2D_BUF_USERPTR;
-                        }
-                }
+                index = cmdlist->last - 2 * (i + 1);
 
                 reg_offset = cmdlist->data[index] & ~0xfffff000;
-
                 if (reg_offset < G2D_VALID_START || reg_offset > G2D_VALID_END)
                         goto err;
                 if (reg_offset % 4)
@@ -753,8 +967,60 @@ static int g2d_check_reg_offset(struct device *dev,
                         if (!for_addr)
                                 goto err;
 
-                        if (node->obj_type[i] != BUF_TYPE_USERPTR)
-                                node->obj_type[i] = BUF_TYPE_GEM;
+                        reg_type = g2d_get_reg_type(reg_offset);
+                        if (reg_type == REG_TYPE_NONE)
+                                goto err;
+
+                        /* check userptr buffer type. */
+                        if ((cmdlist->data[index] & ~0x7fffffff) >> 31) {
+                                buf_info->types[reg_type] = BUF_TYPE_USERPTR;
+                                cmdlist->data[index] &= ~G2D_BUF_USERPTR;
+                        } else
+                                buf_info->types[reg_type] = BUF_TYPE_GEM;
+                        break;
+                case G2D_SRC_COLOR_MODE:
+                case G2D_DST_COLOR_MODE:
+                        if (for_addr)
+                                goto err;
+
+                        reg_type = g2d_get_reg_type(reg_offset);
+                        if (reg_type == REG_TYPE_NONE)
+                                goto err;
+
+                        buf_desc = &buf_info->descs[reg_type];
+                        value = cmdlist->data[index + 1];
+
+                        buf_desc->format = value & 0xf;
+                        break;
+                case G2D_SRC_LEFT_TOP:
+                case G2D_DST_LEFT_TOP:
+                        if (for_addr)
+                                goto err;
+
+                        reg_type = g2d_get_reg_type(reg_offset);
+                        if (reg_type == REG_TYPE_NONE)
+                                goto err;
+
+                        buf_desc = &buf_info->descs[reg_type];
+                        value = cmdlist->data[index + 1];
+
+                        buf_desc->left_x = value & 0x1fff;
+                        buf_desc->top_y = (value & 0x1fff0000) >> 16;
+                        break;
+                case G2D_SRC_RIGHT_BOTTOM:
+                case G2D_DST_RIGHT_BOTTOM:
+                        if (for_addr)
+                                goto err;
+
+                        reg_type = g2d_get_reg_type(reg_offset);
+                        if (reg_type == REG_TYPE_NONE)
+                                goto err;
+
+                        buf_desc = &buf_info->descs[reg_type];
+                        value = cmdlist->data[index + 1];
+
+                        buf_desc->right_x = value & 0x1fff;
+                        buf_desc->bottom_y = (value & 0x1fff0000) >> 16;
                         break;
                 default:
                         if (for_addr)
@@ -860,9 +1126,23 @@ int exynos_g2d_set_cmdlist_ioctl(struct drm_device *drm_dev, void *data,
         cmdlist->data[cmdlist->last++] = G2D_SRC_BASE_ADDR;
         cmdlist->data[cmdlist->last++] = 0;
 
+        /*
+         * 'LIST_HOLD' command should be set to the DMA_HOLD_CMD_REG
+         * and GCF bit should be set to INTEN register if user wants
+         * G2D interrupt event once current command list execution is
+         * finished.
+         * Otherwise only ACF bit should be set to INTEN register so
+         * that one interrupt is occured after all command lists
+         * have been completed.
+         */
         if (node->event) {
+                cmdlist->data[cmdlist->last++] = G2D_INTEN;
+                cmdlist->data[cmdlist->last++] = G2D_INTEN_ACF | G2D_INTEN_GCF;
                 cmdlist->data[cmdlist->last++] = G2D_DMA_HOLD_CMD;
                 cmdlist->data[cmdlist->last++] = G2D_LIST_HOLD;
+        } else {
+                cmdlist->data[cmdlist->last++] = G2D_INTEN;
+                cmdlist->data[cmdlist->last++] = G2D_INTEN_ACF;
         }
 
         /* Check size of cmdlist: last 2 is about G2D_BITBLT_START */
@@ -887,7 +1167,7 @@ int exynos_g2d_set_cmdlist_ioctl(struct drm_device *drm_dev, void *data,
         if (ret < 0)
                 goto err_free_event;
 
-        node->map_nr = req->cmd_buf_nr;
+        node->buf_info.map_nr = req->cmd_buf_nr;
         if (req->cmd_buf_nr) {
                 struct drm_exynos_g2d_cmd *cmd_buf;
 
diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c b/drivers/gpu/drm/exynos/exynos_drm_gem.c
index 67e17ce112b6..0e6fe000578c 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_gem.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c
@@ -164,6 +164,27 @@ out:
         exynos_gem_obj = NULL;
 }
 
+unsigned long exynos_drm_gem_get_size(struct drm_device *dev,
+                                                unsigned int gem_handle,
+                                                struct drm_file *file_priv)
+{
+        struct exynos_drm_gem_obj *exynos_gem_obj;
+        struct drm_gem_object *obj;
+
+        obj = drm_gem_object_lookup(dev, file_priv, gem_handle);
+        if (!obj) {
+                DRM_ERROR("failed to lookup gem object.\n");
+                return 0;
+        }
+
+        exynos_gem_obj = to_exynos_gem_obj(obj);
+
+        drm_gem_object_unreference_unlocked(obj);
+
+        return exynos_gem_obj->buffer->size;
+}
+
+
 struct exynos_drm_gem_obj *exynos_drm_gem_init(struct drm_device *dev,
                                                       unsigned long size)
 {
diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.h b/drivers/gpu/drm/exynos/exynos_drm_gem.h
index 35ebac47dc2b..468766bee450 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_gem.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_gem.h
@@ -130,6 +130,11 @@ int exynos_drm_gem_userptr_ioctl(struct drm_device *dev, void *data,
 int exynos_drm_gem_get_ioctl(struct drm_device *dev, void *data,
                                       struct drm_file *file_priv);
 
+/* get buffer size to gem handle. */
+unsigned long exynos_drm_gem_get_size(struct drm_device *dev,
+                                                unsigned int gem_handle,
+                                                struct drm_file *file_priv);
+
 /* initialize gem object. */
 int exynos_drm_gem_init_object(struct drm_gem_object *obj);
 
diff --git a/drivers/gpu/drm/exynos/exynos_drm_vidi.c b/drivers/gpu/drm/exynos/exynos_drm_vidi.c
index 13ccbd4bcfaa..9504b0cd825a 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_vidi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_vidi.c
@@ -117,13 +117,12 @@ static struct edid *vidi_get_edid(struct device *dev,
         }
 
         edid_len = (1 + ctx->raw_edid->extensions) * EDID_LENGTH;
-        edid = kzalloc(edid_len, GFP_KERNEL);
+        edid = kmemdup(ctx->raw_edid, edid_len, GFP_KERNEL);
         if (!edid) {
                 DRM_DEBUG_KMS("failed to allocate edid\n");
                 return ERR_PTR(-ENOMEM);
         }
 
-        memcpy(edid, ctx->raw_edid, edid_len);
         return edid;
 }
 
@@ -563,12 +562,11 @@ int vidi_connection_ioctl(struct drm_device *drm_dev, void *data,
                         return -EINVAL;
                 }
                 edid_len = (1 + raw_edid->extensions) * EDID_LENGTH;
-                ctx->raw_edid = kzalloc(edid_len, GFP_KERNEL);
+                ctx->raw_edid = kmemdup(raw_edid, edid_len, GFP_KERNEL);
                 if (!ctx->raw_edid) {
                         DRM_DEBUG_KMS("failed to allocate raw_edid.\n");
                         return -ENOMEM;
                 }
-                memcpy(ctx->raw_edid, raw_edid, edid_len);
         } else {
                 /*
                  * with connection = 0, free raw_edid
diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
index e919aba29b3d..2f4f72f07047 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -818,7 +818,7 @@ static void mixer_win_disable(void *ctx, int win)
         mixer_ctx->win_data[win].enabled = false;
 }
 
-int mixer_check_timing(void *ctx, struct fb_videomode *timing)
+static int mixer_check_timing(void *ctx, struct fb_videomode *timing)
 {
         struct mixer_context *mixer_ctx = ctx;
         u32 w, h;
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index aae31489c893..7299ea45dd03 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -103,7 +103,7 @@ static const char *cache_level_str(int type)
 static void
 describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
 {
-        seq_printf(m, "%p: %s%s %8zdKiB %02x %02x %d %d %d%s%s%s",
+        seq_printf(m, "%pK: %s%s %8zdKiB %02x %02x %d %d %d%s%s%s",
                    &obj->base,
                    get_pin_flag(obj),
                    get_tiling_flag(obj),
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 0a8eceb75902..e9b57893db2b 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -125,6 +125,11 @@ MODULE_PARM_DESC(preliminary_hw_support,
                 "Enable Haswell and ValleyView Support. "
                 "(default: false)");
 
+int i915_disable_power_well __read_mostly = 0;
+module_param_named(disable_power_well, i915_disable_power_well, int, 0600);
+MODULE_PARM_DESC(disable_power_well,
+                 "Disable the power well when possible (default: false)");
+
 static struct drm_driver driver;
 extern int intel_agp_enabled;
 
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index e95337c97459..01769e2a9953 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1398,6 +1398,7 @@ extern int i915_enable_fbc __read_mostly;
 extern bool i915_enable_hangcheck __read_mostly;
 extern int i915_enable_ppgtt __read_mostly;
 extern unsigned int i915_preliminary_hw_support __read_mostly;
+extern int i915_disable_power_well __read_mostly;
 
 extern int i915_suspend(struct drm_device *dev, pm_message_t state);
 extern int i915_resume(struct drm_device *dev);
diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
index 2f2daebd0eef..3b11ab0fbc96 100644
--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
@@ -732,6 +732,8 @@ validate_exec_list(struct drm_i915_gem_exec_object2 *exec,
                    int count)
 {
         int i;
+        int relocs_total = 0;
+        int relocs_max = INT_MAX / sizeof(struct drm_i915_gem_relocation_entry);
 
         for (i = 0; i < count; i++) {
                 char __user *ptr = (char __user *)(uintptr_t)exec[i].relocs_ptr;
@@ -740,10 +742,13 @@ validate_exec_list(struct drm_i915_gem_exec_object2 *exec,
                 if (exec[i].flags & __EXEC_OBJECT_UNKNOWN_FLAGS)
                         return -EINVAL;
 
-                /* First check for malicious input causing overflow */
-                if (exec[i].relocation_count >
-                    INT_MAX / sizeof(struct drm_i915_gem_relocation_entry))
+                /* First check for malicious input causing overflow in
+                 * the worst case where we need to allocate the entire
+                 * relocation tree as a single array.
+                 */
+                if (exec[i].relocation_count > relocs_max - relocs_total)
                         return -EINVAL;
+                relocs_total += exec[i].relocation_count;
 
                 length = exec[i].relocation_count *
                         sizeof(struct drm_i915_gem_relocation_entry);
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 287b42c9d1a8..b20d50192fcc 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5771,6 +5771,11 @@ static int haswell_crtc_mode_set(struct drm_crtc *crtc,
                 num_connectors++;
         }
 
+        if (is_cpu_edp)
+                intel_crtc->cpu_transcoder = TRANSCODER_EDP;
+        else
+                intel_crtc->cpu_transcoder = pipe;
+
         /* We are not sure yet this won't happen. */
         WARN(!HAS_PCH_LPT(dev), "Unexpected PCH type %d\n",
              INTEL_PCH_TYPE(dev));
@@ -5837,11 +5842,6 @@ static int intel_crtc_mode_set(struct drm_crtc *crtc,
         int pipe = intel_crtc->pipe;
         int ret;
 
-        if (IS_HASWELL(dev) && intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP))
-                intel_crtc->cpu_transcoder = TRANSCODER_EDP;
-        else
-                intel_crtc->cpu_transcoder = pipe;
-
         drm_vblank_pre_modeset(dev, pipe);
 
         ret = dev_priv->display.crtc_mode_set(crtc, mode, adjusted_mode,
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 6f728e5ee793..d7d4afe01341 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -820,6 +820,7 @@ intel_dp_set_m_n(struct drm_crtc *crtc, struct drm_display_mode *mode,
         struct intel_link_m_n m_n;
         int pipe = intel_crtc->pipe;
         enum transcoder cpu_transcoder = intel_crtc->cpu_transcoder;
+        int target_clock;
 
         /*
          * Find the lane count in the intel_encoder private
@@ -835,13 +836,22 @@ intel_dp_set_m_n(struct drm_crtc *crtc, struct drm_display_mode *mode,
                 }
         }
 
+        target_clock = mode->clock;
+        for_each_encoder_on_crtc(dev, crtc, intel_encoder) {
+                if (intel_encoder->type == INTEL_OUTPUT_EDP) {
+                        target_clock = intel_edp_target_clock(intel_encoder,
+                                                              mode);
+                        break;
+                }
+        }
+
         /*
          * Compute the GMCH and Link ratios. The '3' here is
          * the number of bytes_per_pixel post-LUT, which we always
          * set up for 8-bits of R/G/B, or 3 bytes total.
          */
         intel_link_compute_m_n(intel_crtc->bpp, lane_count,
-                               mode->clock, adjusted_mode->clock, &m_n);
+                               target_clock, adjusted_mode->clock, &m_n);
 
         if (IS_HASWELL(dev)) {
                 I915_WRITE(PIPE_DATA_M1(cpu_transcoder),
@@ -1930,7 +1940,7 @@ intel_dp_start_link_train(struct intel_dp *intel_dp)
                 for (i = 0; i < intel_dp->lane_count; i++)
                         if ((intel_dp->train_set[i] & DP_TRAIN_MAX_SWING_REACHED) == 0)
                                 break;
-                if (i == intel_dp->lane_count && voltage_tries == 5) {
+                if (i == intel_dp->lane_count) {
                         ++loop_tries;
                         if (loop_tries == 5) {
                                 DRM_DEBUG_KMS("too many full retries, give up\n");
diff --git a/drivers/gpu/drm/i915/intel_i2c.c b/drivers/gpu/drm/i915/intel_i2c.c
index acf8aec9ada7..ef4744e1bf0b 100644
--- a/drivers/gpu/drm/i915/intel_i2c.c
+++ b/drivers/gpu/drm/i915/intel_i2c.c
@@ -203,7 +203,13 @@ intel_gpio_setup(struct intel_gmbus *bus, u32 pin)
         algo->data = bus;
 }
 
-#define HAS_GMBUS_IRQ(dev) (INTEL_INFO(dev)->gen >= 4)
+/*
+ * gmbus on gen4 seems to be able to generate legacy interrupts even when in MSI
+ * mode. This results in spurious interrupt warnings if the legacy irq no. is
+ * shared with another device. The kernel then disables that interrupt source
+ * and so prevents the other device from working properly.
+ */
+#define HAS_GMBUS_IRQ(dev) (INTEL_INFO(dev)->gen >= 5)
 static int
 gmbus_wait_hw_status(struct drm_i915_private *dev_priv,
                      u32 gmbus2_status,
@@ -214,6 +220,9 @@ gmbus_wait_hw_status(struct drm_i915_private *dev_priv,
         u32 gmbus2 = 0;
         DEFINE_WAIT(wait);
 
+        if (!HAS_GMBUS_IRQ(dev_priv->dev))
+                gmbus4_irq_en = 0;
+
         /* Important: The hw handles only the first bit, so set only one! Since
          * we also need to check for NAKs besides the hw ready/idle signal, we
          * need to wake up periodically and check that ourselves. */
diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
index a3730e0289e5..bee8cb6108a7 100644
--- a/drivers/gpu/drm/i915/intel_panel.c
+++ b/drivers/gpu/drm/i915/intel_panel.c
@@ -321,9 +321,6 @@ void intel_panel_enable_backlight(struct drm_device *dev,
         if (dev_priv->backlight_level == 0)
                 dev_priv->backlight_level = intel_panel_get_max_backlight(dev);
 
-        dev_priv->backlight_enabled = true;
-        intel_panel_actually_set_backlight(dev, dev_priv->backlight_level);
-
         if (INTEL_INFO(dev)->gen >= 4) {
                 uint32_t reg, tmp;
 
@@ -359,12 +356,12 @@ void intel_panel_enable_backlight(struct drm_device *dev,
         }
 
 set_level:
-        /* Check the current backlight level and try to set again if it's zero.
-         * On some machines, BLC_PWM_CPU_CTL is cleared to zero automatically
-         * when BLC_PWM_CPU_CTL2 and BLC_PWM_PCH_CTL1 are written.
+        /* Call below after setting BLC_PWM_CPU_CTL2 and BLC_PWM_PCH_CTL1.
+         * BLC_PWM_CPU_CTL may be cleared to zero automatically when these
+         * registers are set.
          */
-        if (!intel_panel_get_backlight(dev))
-                intel_panel_actually_set_backlight(dev, dev_priv->backlight_level);
+        dev_priv->backlight_enabled = true;
+        intel_panel_actually_set_backlight(dev, dev_priv->backlight_level);
 }
 
 static void intel_panel_init_backlight(struct drm_device *dev)
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index a1794c6df1bf..adca00783e61 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4079,6 +4079,9 @@ void intel_set_power_well(struct drm_device *dev, bool enable)
         if (!IS_HASWELL(dev))
                 return;
 
+        if (!i915_disable_power_well && !enable)
+                return;
+
         tmp = I915_READ(HSW_PWR_WELL_DRIVER);
         is_enabled = tmp & HSW_PWR_WELL_STATE;
         enable_requested = tmp & HSW_PWR_WELL_ENABLE;
diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c
index a274b9906ef8..fe22bb780e1d 100644
--- a/drivers/gpu/drm/mgag200/mgag200_mode.c
+++ b/drivers/gpu/drm/mgag200/mgag200_mode.c
@@ -382,19 +382,19 @@ static int mga_g200eh_set_plls(struct mga_device *mdev, long clock)
         m = n = p = 0;
         vcomax = 800000;
         vcomin = 400000;
-        pllreffreq = 3333;
+        pllreffreq = 33333;
 
         delta = 0xffffffff;
         permitteddelta = clock * 5 / 1000;
 
-        for (testp = 16; testp > 0; testp--) {
+        for (testp = 16; testp > 0; testp >>= 1) {
                 if (clock * testp > vcomax)
                         continue;
                 if (clock * testp < vcomin)
                         continue;
 
                 for (testm = 1; testm < 33; testm++) {
-                        for (testn = 1; testn < 257; testn++) {
+                        for (testn = 17; testn < 257; testn++) {
                                 computed = (pllreffreq * testn) /
                                         (testm * testp);
                                 if (computed > clock)
@@ -404,11 +404,11 @@ static int mga_g200eh_set_plls(struct mga_device *mdev, long clock)
                                 if (tmpdelta < delta) {
                                         delta = tmpdelta;
                                         n = testn - 1;
-                                        m = (testm - 1) | ((n >> 1) & 0x80);
+                                        m = (testm - 1);
                                         p = testp - 1;
                                 }
                                 if ((clock * testp) >= 600000)
-                                        p |= 80;
+                                        p |= 0x80;
                         }
                 }
         }
diff --git a/drivers/gpu/drm/nouveau/core/core/object.c b/drivers/gpu/drm/nouveau/core/core/object.c
index 0daab62ea14c..3b2e7b6304d3 100644
--- a/drivers/gpu/drm/nouveau/core/core/object.c
+++ b/drivers/gpu/drm/nouveau/core/core/object.c
@@ -278,7 +278,6 @@ nouveau_object_del(struct nouveau_object *client, u32 _parent, u32 _handle)
         struct nouveau_object *parent = NULL;
         struct nouveau_object *namedb = NULL;
         struct nouveau_handle *handle = NULL;
-        int ret = -EINVAL;
 
         parent = nouveau_handle_ref(client, _parent);
         if (!parent)
@@ -295,7 +294,7 @@ nouveau_object_del(struct nouveau_object *client, u32 _parent, u32 _handle)
         }
 
         nouveau_object_ref(NULL, &parent);
-        return ret;
+        return handle ? 0 : -EINVAL;
 }
 
 int
diff --git a/drivers/gpu/drm/nouveau/core/include/subdev/therm.h b/drivers/gpu/drm/nouveau/core/include/subdev/therm.h
index 6b17b614629f..0b20fc0d19c1 100644
--- a/drivers/gpu/drm/nouveau/core/include/subdev/therm.h
+++ b/drivers/gpu/drm/nouveau/core/include/subdev/therm.h
@@ -4,7 +4,7 @@
 #include <core/device.h>
 #include <core/subdev.h>
 
-enum nouveau_therm_mode {
+enum nouveau_therm_fan_mode {
         NOUVEAU_THERM_CTRL_NONE = 0,
         NOUVEAU_THERM_CTRL_MANUAL = 1,
         NOUVEAU_THERM_CTRL_AUTO = 2,
diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/base.c b/drivers/gpu/drm/nouveau/core/subdev/therm/base.c
index f794dc89a3b2..a00a5a76e2d6 100644
--- a/drivers/gpu/drm/nouveau/core/subdev/therm/base.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/therm/base.c
@@ -134,7 +134,7 @@ nouveau_therm_alarm(struct nouveau_alarm *alarm)
 }
 
 int
-nouveau_therm_mode(struct nouveau_therm *therm, int mode)
+nouveau_therm_fan_mode(struct nouveau_therm *therm, int mode)
 {
         struct nouveau_therm_priv *priv = (void *)therm;
         struct nouveau_device *device = nv_device(therm);
@@ -149,10 +149,15 @@ nouveau_therm_mode(struct nouveau_therm *therm, int mode)
             (mode != NOUVEAU_THERM_CTRL_NONE && device->card_type >= NV_C0))
                 return -EINVAL;
 
+        /* do not allow automatic fan management if the thermal sensor is
+         * not available */
+        if (priv->mode == 2 && therm->temp_get(therm) < 0)
+                return -EINVAL;
+
         if (priv->mode == mode)
                 return 0;
 
-        nv_info(therm, "Thermal management: %s\n", name[mode]);
+        nv_info(therm, "fan management: %s\n", name[mode]);
         nouveau_therm_update(therm, mode);
         return 0;
 }
@@ -213,7 +218,7 @@ nouveau_therm_attr_set(struct nouveau_therm *therm,
                 priv->fan->bios.max_duty = value;
                 return 0;
         case NOUVEAU_THERM_ATTR_FAN_MODE:
-                return nouveau_therm_mode(therm, value);
+                return nouveau_therm_fan_mode(therm, value);
         case NOUVEAU_THERM_ATTR_THRS_FAN_BOOST:
                 priv->bios_sensor.thrs_fan_boost.temp = value;
                 priv->sensor.program_alarms(therm);
@@ -263,7 +268,7 @@ _nouveau_therm_init(struct nouveau_object *object)
                 return ret;
 
         if (priv->suspend >= 0)
-                nouveau_therm_mode(therm, priv->mode);
+                nouveau_therm_fan_mode(therm, priv->mode);
         priv->sensor.program_alarms(therm);
         return 0;
 }
@@ -313,11 +318,12 @@ nouveau_therm_create_(struct nouveau_object *parent,
 int
 nouveau_therm_preinit(struct nouveau_therm *therm)
 {
-        nouveau_therm_ic_ctor(therm);
         nouveau_therm_sensor_ctor(therm);
+        nouveau_therm_ic_ctor(therm);
         nouveau_therm_fan_ctor(therm);
 
-        nouveau_therm_mode(therm, NOUVEAU_THERM_CTRL_NONE);
+        nouveau_therm_fan_mode(therm, NOUVEAU_THERM_CTRL_NONE);
+        nouveau_therm_sensor_preinit(therm);
         return 0;
 }
 
diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/ic.c b/drivers/gpu/drm/nouveau/core/subdev/therm/ic.c
index e24090bac195..8b3adec5fbb1 100644
--- a/drivers/gpu/drm/nouveau/core/subdev/therm/ic.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/therm/ic.c
@@ -32,6 +32,7 @@ probe_monitoring_device(struct nouveau_i2c_port *i2c,
                         struct i2c_board_info *info)
 {
         struct nouveau_therm_priv *priv = (void *)nouveau_therm(i2c);
+        struct nvbios_therm_sensor *sensor = &priv->bios_sensor;
         struct i2c_client *client;
 
         request_module("%s%s", I2C_MODULE_PREFIX, info->type);
@@ -46,8 +47,9 @@ probe_monitoring_device(struct nouveau_i2c_port *i2c,
         }
 
         nv_info(priv,
-                "Found an %s at address 0x%x (controlled by lm_sensors)\n",
-                info->type, info->addr);
+                "Found an %s at address 0x%x (controlled by lm_sensors, "
+                "temp offset %+i C)\n",
+                info->type, info->addr, sensor->offset_constant);
         priv->ic = client;
 
         return true;
diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/nv40.c b/drivers/gpu/drm/nouveau/core/subdev/therm/nv40.c
index 0f5363edb964..a70d1b7e397b 100644
--- a/drivers/gpu/drm/nouveau/core/subdev/therm/nv40.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/therm/nv40.c
@@ -29,54 +29,83 @@ struct nv40_therm_priv {
         struct nouveau_therm_priv base;
 };
 
+enum nv40_sensor_style { INVALID_STYLE = -1, OLD_STYLE = 0, NEW_STYLE = 1 };
+
+static enum nv40_sensor_style
+nv40_sensor_style(struct nouveau_therm *therm)
+{
+        struct nouveau_device *device = nv_device(therm);
+
+        switch (device->chipset) {
+        case 0x43:
+        case 0x44:
+        case 0x4a:
+        case 0x47:
+                return OLD_STYLE;
+
+        case 0x46:
+        case 0x49:
+        case 0x4b:
+        case 0x4e:
+        case 0x4c:
+        case 0x67:
+        case 0x68:
+        case 0x63:
+                return NEW_STYLE;
+        default:
+                return INVALID_STYLE;
+        }
+}
+
 static int
 nv40_sensor_setup(struct nouveau_therm *therm)
 {
-        struct nouveau_device *device = nv_device(therm);
+        enum nv40_sensor_style style = nv40_sensor_style(therm);
 
         /* enable ADC readout and disable the ALARM threshold */
-        if (device->chipset >= 0x46) {
+        if (style == NEW_STYLE) {
                 nv_mask(therm, 0x15b8, 0x80000000, 0);
                 nv_wr32(therm, 0x15b0, 0x80003fff);
-                mdelay(10); /* wait for the temperature to stabilize */
+                mdelay(20); /* wait for the temperature to stabilize */
                 return nv_rd32(therm, 0x15b4) & 0x3fff;
-        } else {
+        } else if (style == OLD_STYLE) {
                 nv_wr32(therm, 0x15b0, 0xff);
+                mdelay(20); /* wait for the temperature to stabilize */
                 return nv_rd32(therm, 0x15b4) & 0xff;
-        }
+        } else
+                return -ENODEV;
 }
 
 static int
 nv40_temp_get(struct nouveau_therm *therm)
 {
         struct nouveau_therm_priv *priv = (void *)therm;
-        struct nouveau_device *device = nv_device(therm);
         struct nvbios_therm_sensor *sensor = &priv->bios_sensor;
+        enum nv40_sensor_style style = nv40_sensor_style(therm);
         int core_temp;
 
-        if (device->chipset >= 0x46) {
+        if (style == NEW_STYLE) {
                 nv_wr32(therm, 0x15b0, 0x80003fff);
                 core_temp = nv_rd32(therm, 0x15b4) & 0x3fff;
-        } else {
+        } else if (style == OLD_STYLE) {
                 nv_wr32(therm, 0x15b0, 0xff);
                 core_temp = nv_rd32(therm, 0x15b4) & 0xff;
-        }
-
-        /* Setup the sensor if the temperature is 0 */
-        if (core_temp == 0)
-                core_temp = nv40_sensor_setup(therm);
+        } else
+                return -ENODEV;
 
-        if (sensor->slope_div == 0)
-                sensor->slope_div = 1;
-        if (sensor->offset_den == 0)
-                sensor->offset_den = 1;
-        if (sensor->slope_mult < 1)
-                sensor->slope_mult = 1;
+        /* if the slope or the offset is unset, do no use the sensor */
+        if (!sensor->slope_div || !sensor->slope_mult ||
+            !sensor->offset_num || !sensor->offset_den)
+            return -ENODEV;
 
         core_temp = core_temp * sensor->slope_mult / sensor->slope_div;
         core_temp = core_temp + sensor->offset_num / sensor->offset_den;
         core_temp = core_temp + sensor->offset_constant - 8;
 
+        /* reserve negative temperatures for errors */
+        if (core_temp < 0)
+                core_temp = 0;
+
         return core_temp;
 }
 
diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/priv.h b/drivers/gpu/drm/nouveau/core/subdev/therm/priv.h
index 06b98706b3fc..438d9824b774 100644
--- a/drivers/gpu/drm/nouveau/core/subdev/therm/priv.h
+++ b/drivers/gpu/drm/nouveau/core/subdev/therm/priv.h
@@ -102,7 +102,7 @@ struct nouveau_therm_priv {
         struct i2c_client *ic;
 };
 
-int nouveau_therm_mode(struct nouveau_therm *therm, int mode);
+int nouveau_therm_fan_mode(struct nouveau_therm *therm, int mode);
 int nouveau_therm_attr_get(struct nouveau_therm *therm,
                        enum nouveau_therm_attr_type type);
 int nouveau_therm_attr_set(struct nouveau_therm *therm,
@@ -122,6 +122,7 @@ int nouveau_therm_fan_sense(struct nouveau_therm *therm);
 
 int nouveau_therm_preinit(struct nouveau_therm *);
 
+void nouveau_therm_sensor_preinit(struct nouveau_therm *);
 void nouveau_therm_sensor_set_threshold_state(struct nouveau_therm *therm,
                                              enum nouveau_therm_thrs thrs,
                                              enum nouveau_therm_thrs_state st);
diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c b/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c
index b37624af8297..470f6a47b656 100644
--- a/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c
@@ -34,10 +34,6 @@ nouveau_therm_temp_set_defaults(struct nouveau_therm *therm)
 {
         struct nouveau_therm_priv *priv = (void *)therm;
 
-        priv->bios_sensor.slope_mult = 1;
-        priv->bios_sensor.slope_div = 1;
-        priv->bios_sensor.offset_num = 0;
-        priv->bios_sensor.offset_den = 1;
         priv->bios_sensor.offset_constant = 0;
 
         priv->bios_sensor.thrs_fan_boost.temp = 90;
@@ -60,11 +56,6 @@ nouveau_therm_temp_safety_checks(struct nouveau_therm *therm)
         struct nouveau_therm_priv *priv = (void *)therm;
         struct nvbios_therm_sensor *s = &priv->bios_sensor;
 
-        if (!priv->bios_sensor.slope_div)
-                priv->bios_sensor.slope_div = 1;
-        if (!priv->bios_sensor.offset_den)
-                priv->bios_sensor.offset_den = 1;
-
         /* enforce a minimum hysteresis on thresholds */
         s->thrs_fan_boost.hysteresis = max_t(u8, s->thrs_fan_boost.hysteresis, 2);
         s->thrs_down_clock.hysteresis = max_t(u8, s->thrs_down_clock.hysteresis, 2);
@@ -106,16 +97,16 @@ void nouveau_therm_sensor_event(struct nouveau_therm *therm,
         const char *thresolds[] = {
                 "fanboost", "downclock", "critical", "shutdown"
         };
-        uint8_t temperature = therm->temp_get(therm);
+        int temperature = therm->temp_get(therm);
 
         if (thrs < 0 || thrs > 3)
                 return;
 
         if (dir == NOUVEAU_THERM_THRS_FALLING)
-                nv_info(therm, "temperature (%u C) went below the '%s' threshold\n",
+                nv_info(therm, "temperature (%i C) went below the '%s' threshold\n",
                         temperature, thresolds[thrs]);
         else
-                nv_info(therm, "temperature (%u C) hit the '%s' threshold\n",
+                nv_info(therm, "temperature (%i C) hit the '%s' threshold\n",
                         temperature, thresolds[thrs]);
 
         active = (dir == NOUVEAU_THERM_THRS_RISING);
@@ -123,7 +114,7 @@ void nouveau_therm_sensor_event(struct nouveau_therm *therm,
         case NOUVEAU_THERM_THRS_FANBOOST:
                 if (active) {
                         nouveau_therm_fan_set(therm, true, 100);
-                        nouveau_therm_mode(therm, NOUVEAU_THERM_CTRL_AUTO);
+                        nouveau_therm_fan_mode(therm, NOUVEAU_THERM_CTRL_AUTO);
                 }
                 break;
         case NOUVEAU_THERM_THRS_DOWNCLOCK:
@@ -202,7 +193,7 @@ alarm_timer_callback(struct nouveau_alarm *alarm)
                                              NOUVEAU_THERM_THRS_SHUTDOWN);
 
         /* schedule the next poll in one second */
-        if (list_empty(&alarm->head))
+        if (therm->temp_get(therm) >= 0 && list_empty(&alarm->head))
                 ptimer->alarm(ptimer, 1000 * 1000 * 1000, alarm);
 
         spin_unlock_irqrestore(&priv->sensor.alarm_program_lock, flags);
@@ -225,6 +216,17 @@ nouveau_therm_program_alarms_polling(struct nouveau_therm *therm)
         alarm_timer_callback(&priv->sensor.therm_poll_alarm);
 }
 
+void
+nouveau_therm_sensor_preinit(struct nouveau_therm *therm)
+{
+        const char *sensor_avail = "yes";
+
+        if (therm->temp_get(therm) < 0)
+                sensor_avail = "no";
+
+        nv_info(therm, "internal sensor: %s\n", sensor_avail);
+}
+
 int
 nouveau_therm_sensor_ctor(struct nouveau_therm *therm)
 {
diff --git a/drivers/gpu/drm/nouveau/nouveau_pm.c b/drivers/gpu/drm/nouveau/nouveau_pm.c
index bb54098c6d97..936b442a6ab7 100644
--- a/drivers/gpu/drm/nouveau/nouveau_pm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_pm.c
@@ -402,8 +402,12 @@ nouveau_hwmon_show_temp(struct device *d, struct device_attribute *a, char *buf)
         struct drm_device *dev = dev_get_drvdata(d);
         struct nouveau_drm *drm = nouveau_drm(dev);
         struct nouveau_therm *therm = nouveau_therm(drm->device);
+        int temp = therm->temp_get(therm);
 
-        return snprintf(buf, PAGE_SIZE, "%d\n", therm->temp_get(therm) * 1000);
+        if (temp < 0)
+                return temp;
+
+        return snprintf(buf, PAGE_SIZE, "%d\n", temp * 1000);
 }
 static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, nouveau_hwmon_show_temp,
                                                   NULL, 0);
@@ -871,7 +875,12 @@ static SENSOR_DEVICE_ATTR(pwm1_max, S_IRUGO | S_IWUSR,
                           nouveau_hwmon_get_pwm1_max,
                           nouveau_hwmon_set_pwm1_max, 0);
 
-static struct attribute *hwmon_attributes[] = {
+static struct attribute *hwmon_default_attributes[] = {
+        &sensor_dev_attr_name.dev_attr.attr,
+        &sensor_dev_attr_update_rate.dev_attr.attr,
+        NULL
+};
+static struct attribute *hwmon_temp_attributes[] = {
         &sensor_dev_attr_temp1_input.dev_attr.attr,
         &sensor_dev_attr_temp1_auto_point1_pwm.dev_attr.attr,
         &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr,
@@ -882,8 +891,6 @@ static struct attribute *hwmon_attributes[] = {
         &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
         &sensor_dev_attr_temp1_emergency.dev_attr.attr,
         &sensor_dev_attr_temp1_emergency_hyst.dev_attr.attr,
-        &sensor_dev_attr_name.dev_attr.attr,
-        &sensor_dev_attr_update_rate.dev_attr.attr,
         NULL
 };
 static struct attribute *hwmon_fan_rpm_attributes[] = {
@@ -898,8 +905,11 @@ static struct attribute *hwmon_pwm_fan_attributes[] = {
         NULL
 };
 
-static const struct attribute_group hwmon_attrgroup = {
-        .attrs = hwmon_attributes,
+static const struct attribute_group hwmon_default_attrgroup = {
+        .attrs = hwmon_default_attributes,
+};
+static const struct attribute_group hwmon_temp_attrgroup = {
+        .attrs = hwmon_temp_attributes,
 };
 static const struct attribute_group hwmon_fan_rpm_attrgroup = {
         .attrs = hwmon_fan_rpm_attributes,
@@ -931,13 +941,22 @@ nouveau_hwmon_init(struct drm_device *dev)
         }
         dev_set_drvdata(hwmon_dev, dev);
 
-        /* default sysfs entries */
-        ret = sysfs_create_group(&hwmon_dev->kobj, &hwmon_attrgroup);
+        /* set the default attributes */
+        ret = sysfs_create_group(&hwmon_dev->kobj, &hwmon_default_attrgroup);
         if (ret) {
                 if (ret)
                         goto error;
         }
 
+        /* if the card has a working thermal sensor */
+        if (therm->temp_get(therm) >= 0) {
+                ret = sysfs_create_group(&hwmon_dev->kobj, &hwmon_temp_attrgroup);
+                if (ret) {
+                        if (ret)
+                                goto error;
+                }
+        }
+
         /* if the card has a pwm fan */
         /*XXX: incorrect, need better detection for this, some boards have
          *     the gpio entries for pwm fan control even when there's no
@@ -979,11 +998,10 @@ nouveau_hwmon_fini(struct drm_device *dev)
         struct nouveau_pm *pm = nouveau_pm(dev);
 
         if (pm->hwmon) {
-                sysfs_remove_group(&pm->hwmon->kobj, &hwmon_attrgroup);
-                sysfs_remove_group(&pm->hwmon->kobj,
-                                   &hwmon_pwm_fan_attrgroup);
-                sysfs_remove_group(&pm->hwmon->kobj,
-                                   &hwmon_fan_rpm_attrgroup);
+                sysfs_remove_group(&pm->hwmon->kobj, &hwmon_default_attrgroup);
+                sysfs_remove_group(&pm->hwmon->kobj, &hwmon_temp_attrgroup);
+                sysfs_remove_group(&pm->hwmon->kobj, &hwmon_pwm_fan_attrgroup);
+                sysfs_remove_group(&pm->hwmon->kobj, &hwmon_fan_rpm_attrgroup);
 
                 hwmon_device_unregister(pm->hwmon);
         }
diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c
index 2db57990f65c..7f0e6c3f37d1 100644
--- a/drivers/gpu/drm/nouveau/nv50_display.c
+++ b/drivers/gpu/drm/nouveau/nv50_display.c
@@ -524,6 +524,8 @@ nv50_display_flip_next(struct drm_crtc *crtc, struct drm_framebuffer *fb,
         swap_interval <<= 4;
         if (swap_interval == 0)
                 swap_interval |= 0x100;
+        if (chan == NULL)
+                evo_sync(crtc->dev);
 
         push = evo_wait(sync, 128);
         if (unlikely(push == NULL))
@@ -586,8 +588,6 @@ nv50_display_flip_next(struct drm_crtc *crtc, struct drm_framebuffer *fb,
                 sync->addr ^= 0x10;
                 sync->data++;
                 FIRE_RING (chan);
-        } else {
-                evo_sync(crtc->dev);
         }
 
         /* queue the flip */
diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c
index d4c633e12863..27769e724b6d 100644
--- a/drivers/gpu/drm/radeon/ni.c
+++ b/drivers/gpu/drm/radeon/ni.c
@@ -468,13 +468,19 @@ static void cayman_gpu_init(struct radeon_device *rdev)
                     (rdev->pdev->device == 0x9907) ||
                     (rdev->pdev->device == 0x9908) ||
                     (rdev->pdev->device == 0x9909) ||
+                    (rdev->pdev->device == 0x990B) ||
+                    (rdev->pdev->device == 0x990C) ||
+                    (rdev->pdev->device == 0x990F) ||
                     (rdev->pdev->device == 0x9910) ||
-                    (rdev->pdev->device == 0x9917)) {
+                    (rdev->pdev->device == 0x9917) ||
+                    (rdev->pdev->device == 0x9999)) {
                         rdev->config.cayman.max_simds_per_se = 6;
                         rdev->config.cayman.max_backends_per_se = 2;
                 } else if ((rdev->pdev->device == 0x9903) ||
                            (rdev->pdev->device == 0x9904) ||
                            (rdev->pdev->device == 0x990A) ||
+                           (rdev->pdev->device == 0x990D) ||
+                           (rdev->pdev->device == 0x990E) ||
                            (rdev->pdev->device == 0x9913) ||
                            (rdev->pdev->device == 0x9918)) {
                         rdev->config.cayman.max_simds_per_se = 4;
@@ -483,6 +489,9 @@ static void cayman_gpu_init(struct radeon_device *rdev)
                            (rdev->pdev->device == 0x9990) ||
                            (rdev->pdev->device == 0x9991) ||
                            (rdev->pdev->device == 0x9994) ||
+                           (rdev->pdev->device == 0x9995) ||
+                           (rdev->pdev->device == 0x9996) ||
+                           (rdev->pdev->device == 0x999A) ||
                            (rdev->pdev->device == 0x99A0)) {
                         rdev->config.cayman.max_simds_per_se = 3;
                         rdev->config.cayman.max_backends_per_se = 1;
@@ -616,11 +625,22 @@ static void cayman_gpu_init(struct radeon_device *rdev)
         WREG32(DMA_TILING_CONFIG + DMA0_REGISTER_OFFSET, gb_addr_config);
         WREG32(DMA_TILING_CONFIG + DMA1_REGISTER_OFFSET, gb_addr_config);
 
-        tmp = gb_addr_config & NUM_PIPES_MASK;
-        tmp = r6xx_remap_render_backend(rdev, tmp,
-                                        rdev->config.cayman.max_backends_per_se *
-                                        rdev->config.cayman.max_shader_engines,
-                                        CAYMAN_MAX_BACKENDS, disabled_rb_mask);
+        if ((rdev->config.cayman.max_backends_per_se == 1) &&
+            (rdev->flags & RADEON_IS_IGP)) {
+                if ((disabled_rb_mask & 3) == 1) {
+                        /* RB0 disabled, RB1 enabled */
+                        tmp = 0x11111111;
+                } else {
+                        /* RB1 disabled, RB0 enabled */
+                        tmp = 0x00000000;
+                }
+        } else {
+                tmp = gb_addr_config & NUM_PIPES_MASK;
+                tmp = r6xx_remap_render_backend(rdev, tmp,
+                                                rdev->config.cayman.max_backends_per_se *
+                                                rdev->config.cayman.max_shader_engines,
+                                                CAYMAN_MAX_BACKENDS, disabled_rb_mask);
+        }
         WREG32(GB_BACKEND_MAP, tmp);
 
         cgts_tcc_disable = 0xffff0000;
@@ -1771,6 +1791,7 @@ int cayman_resume(struct radeon_device *rdev)
 int cayman_suspend(struct radeon_device *rdev)
 {
         r600_audio_fini(rdev);
+        radeon_vm_manager_fini(rdev);
         cayman_cp_enable(rdev, false);
         cayman_dma_stop(rdev);
         evergreen_irq_suspend(rdev);
diff --git a/drivers/gpu/drm/radeon/radeon_benchmark.c b/drivers/gpu/drm/radeon/radeon_benchmark.c
index bedda9caadd9..6e05a2e75a46 100644
--- a/drivers/gpu/drm/radeon/radeon_benchmark.c
+++ b/drivers/gpu/drm/radeon/radeon_benchmark.c
@@ -122,10 +122,7 @@ static void radeon_benchmark_move(struct radeon_device *rdev, unsigned size,
                 goto out_cleanup;
         }
 
-        /* r100 doesn't have dma engine so skip the test */
-        /* also, VRAM-to-VRAM test doesn't make much sense for DMA */
-        /* skip it as well if domains are the same */
-        if ((rdev->asic->copy.dma) && (sdomain != ddomain)) {
+        if (rdev->asic->copy.dma) {
                 time = radeon_benchmark_do_move(rdev, size, saddr, daddr,
                                                 RADEON_BENCHMARK_COPY_DMA, n);
                 if (time < 0)
@@ -135,13 +132,15 @@ static void radeon_benchmark_move(struct radeon_device *rdev, unsigned size,
                                                      sdomain, ddomain, "dma");
         }
 
-        time = radeon_benchmark_do_move(rdev, size, saddr, daddr,
-                                        RADEON_BENCHMARK_COPY_BLIT, n);
-        if (time < 0)
-                goto out_cleanup;
-        if (time > 0)
-                radeon_benchmark_log_results(n, size, time,
-                                             sdomain, ddomain, "blit");
+        if (rdev->asic->copy.blit) {
+                time = radeon_benchmark_do_move(rdev, size, saddr, daddr,
+                                                RADEON_BENCHMARK_COPY_BLIT, n);
+                if (time < 0)
+                        goto out_cleanup;
+                if (time > 0)
+                        radeon_benchmark_log_results(n, size, time,
+                                                     sdomain, ddomain, "blit");
+        }
 
 out_cleanup:
         if (sobj) {
diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
index 9128120da044..bafbe3216952 100644
--- a/drivers/gpu/drm/radeon/si.c
+++ b/drivers/gpu/drm/radeon/si.c
@@ -4469,6 +4469,7 @@ int si_resume(struct radeon_device *rdev)
 
 int si_suspend(struct radeon_device *rdev)
 {
+        radeon_vm_manager_fini(rdev);
         si_cp_enable(rdev, false);
         cayman_dma_stop(rdev);
         si_irq_suspend(rdev);
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 92e47e5c9564..c4388776f4e4 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -590,6 +590,9 @@
 #define USB_VENDOR_ID_MONTEREY          0x0566
 #define USB_DEVICE_ID_GENIUS_KB29E      0x3004
 
+#define USB_VENDOR_ID_MSI               0x1770
+#define USB_DEVICE_ID_MSI_GX680R_LED_PANEL      0xff00
+
 #define USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR 0x0400
 #define USB_DEVICE_ID_N_S_HARMONY       0xc359
 
@@ -684,6 +687,9 @@
 #define USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001         0x3001
 #define USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3008         0x3008
 
+#define USB_VENDOR_ID_REALTEK           0x0bda
+#define USB_DEVICE_ID_REALTEK_READER    0x0152
+
 #define USB_VENDOR_ID_ROCCAT            0x1e7d
 #define USB_DEVICE_ID_ROCCAT_ARVO       0x30d4
 #define USB_DEVICE_ID_ROCCAT_ISKU       0x319c
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 7a1ebb867cf4..82e9211b3ca9 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -621,6 +621,7 @@ static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field,
 {
         struct mt_device *td = hid_get_drvdata(hid);
         __s32 quirks = td->mtclass.quirks;
+        struct input_dev *input = field->hidinput->input;
 
         if (hid->claimed & HID_CLAIMED_INPUT) {
                 switch (usage->hid) {
@@ -670,13 +671,16 @@ static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field,
                         break;
 
                 default:
+                        if (usage->type)
+                                input_event(input, usage->type, usage->code,
+                                                value);
                         return;
                 }
 
                 if (usage->usage_index + 1 == field->report_count) {
                         /* we only take into account the last report. */
                         if (usage->hid == td->last_slot_field)
-                                mt_complete_slot(td, field->hidinput->input);
+                                mt_complete_slot(td, input);
 
                         if (field->index == td->last_field_index
                                 && td->num_received >= td->num_expected)
diff --git a/drivers/hid/usbhid/hid-quirks.c b/drivers/hid/usbhid/hid-quirks.c
index e0e6abf1cd3b..19b8360f2330 100644
--- a/drivers/hid/usbhid/hid-quirks.c
+++ b/drivers/hid/usbhid/hid-quirks.c
@@ -73,6 +73,7 @@ static const struct hid_blacklist {
         { USB_VENDOR_ID_FORMOSA, USB_DEVICE_ID_FORMOSA_IR_RECEIVER, HID_QUIRK_NO_INIT_REPORTS },
         { USB_VENDOR_ID_FREESCALE, USB_DEVICE_ID_FREESCALE_MX28, HID_QUIRK_NOGET },
         { USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS, HID_QUIRK_NOGET },
+        { USB_VENDOR_ID_MSI, USB_DEVICE_ID_MSI_GX680R_LED_PANEL, HID_QUIRK_NO_INIT_REPORTS },
         { USB_VENDOR_ID_NOVATEK, USB_DEVICE_ID_NOVATEK_MOUSE, HID_QUIRK_NO_INIT_REPORTS },
         { USB_VENDOR_ID_PIXART, USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN, HID_QUIRK_NO_INIT_REPORTS },
         { USB_VENDOR_ID_PIXART, USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1, HID_QUIRK_NO_INIT_REPORTS },
@@ -80,6 +81,7 @@ static const struct hid_blacklist {
         { USB_VENDOR_ID_PRODIGE, USB_DEVICE_ID_PRODIGE_CORDLESS, HID_QUIRK_NOGET },
         { USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001, HID_QUIRK_NOGET },
         { USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3008, HID_QUIRK_NOGET },
+        { USB_VENDOR_ID_REALTEK, USB_DEVICE_ID_REALTEK_READER, HID_QUIRK_NO_INIT_REPORTS },
         { USB_VENDOR_ID_SENNHEISER, USB_DEVICE_ID_SENNHEISER_BTD500USB, HID_QUIRK_NOGET },
         { USB_VENDOR_ID_SIGMATEL, USB_DEVICE_ID_SIGMATEL_STMP3780, HID_QUIRK_NOGET },
         { USB_VENDOR_ID_SUN, USB_DEVICE_ID_RARITAN_KVM_DONGLE, HID_QUIRK_NOGET },
diff --git a/drivers/hwmon/lm75.h b/drivers/hwmon/lm75.h
index 668ff4721323..5cde94e56f17 100644
--- a/drivers/hwmon/lm75.h
+++ b/drivers/hwmon/lm75.h
@@ -25,7 +25,7 @@
     which contains this code, we don't worry about the wasted space.
 */
 
-#include <linux/hwmon.h>
+#include <linux/kernel.h>
 
 /* straight from the datasheet */
 #define LM75_TEMP_MIN (-55000)
diff --git a/drivers/i2c/Kconfig b/drivers/i2c/Kconfig
index 46cde098c11c..e380c6eef3af 100644
--- a/drivers/i2c/Kconfig
+++ b/drivers/i2c/Kconfig
@@ -4,7 +4,6 @@
 
 menuconfig I2C
         tristate "I2C support"
-        depends on !S390
         select RT_MUTEXES
         ---help---
           I2C (pronounce: I-squared-C) is a slow serial bus protocol used in
@@ -76,6 +75,7 @@ config I2C_HELPER_AUTO
 
 config I2C_SMBUS
         tristate "SMBus-specific protocols" if !I2C_HELPER_AUTO
+        depends on GENERIC_HARDIRQS
         help
           Say Y here if you want support for SMBus extensions to the I2C
           specification. At the moment, the only supported extension is
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index a3725de92384..adfee98486b1 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -114,7 +114,7 @@ config I2C_I801
 
 config I2C_ISCH
         tristate "Intel SCH SMBus 1.0"
-        depends on PCI
+        depends on PCI && GENERIC_HARDIRQS
         select LPC_SCH
         help
           Say Y here if you want to use SMBus controller on the Intel SCH
@@ -543,6 +543,7 @@ config I2C_NUC900
 
 config I2C_OCORES
         tristate "OpenCores I2C Controller"
+        depends on GENERIC_HARDIRQS
         help
           If you say yes to this option, support will be included for the
           OpenCores I2C controller. For details see
@@ -777,7 +778,7 @@ config I2C_DIOLAN_U2C
 
 config I2C_PARPORT
         tristate "Parallel port adapter"
-        depends on PARPORT
+        depends on PARPORT && GENERIC_HARDIRQS
         select I2C_ALGOBIT
         select I2C_SMBUS
         help
@@ -802,6 +803,7 @@ config I2C_PARPORT
 
 config I2C_PARPORT_LIGHT
         tristate "Parallel port adapter (light)"
+        depends on GENERIC_HARDIRQS
         select I2C_ALGOBIT
         select I2C_SMBUS
         help
diff --git a/drivers/i2c/busses/i2c-ismt.c b/drivers/i2c/busses/i2c-ismt.c
index e9205ee8cf94..130f02cc9d94 100644
--- a/drivers/i2c/busses/i2c-ismt.c
+++ b/drivers/i2c/busses/i2c-ismt.c
@@ -80,6 +80,7 @@
 /* PCI DIDs for the Intel SMBus Message Transport (SMT) Devices */
 #define PCI_DEVICE_ID_INTEL_S1200_SMT0  0x0c59
 #define PCI_DEVICE_ID_INTEL_S1200_SMT1  0x0c5a
+#define PCI_DEVICE_ID_INTEL_AVOTON_SMT  0x1f15
 
 #define ISMT_DESC_ENTRIES       32      /* number of descriptor entries */
 #define ISMT_MAX_RETRIES        3       /* number of SMBus retries to attempt */
@@ -185,6 +186,7 @@ struct ismt_priv {
 static const DEFINE_PCI_DEVICE_TABLE(ismt_ids) = {
         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_S1200_SMT0) },
         { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_S1200_SMT1) },
+        { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_AVOTON_SMT) },
         { 0, }
 };
 
diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
index 36704e3ab3fa..b714776b6ddd 100644
--- a/drivers/i2c/busses/i2c-tegra.c
+++ b/drivers/i2c/busses/i2c-tegra.c
@@ -411,7 +411,11 @@ static int tegra_i2c_init(struct tegra_i2c_dev *i2c_dev)
         int clk_multiplier = I2C_CLK_MULTIPLIER_STD_FAST_MODE;
         u32 clk_divisor;
 
-        tegra_i2c_clock_enable(i2c_dev);
+        err = tegra_i2c_clock_enable(i2c_dev);
+        if (err < 0) {
+                dev_err(i2c_dev->dev, "Clock enable failed %d\n", err);
+                return err;
+        }
 
         tegra_periph_reset_assert(i2c_dev->div_clk);
         udelay(2);
@@ -628,7 +632,12 @@ static int tegra_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[],
         if (i2c_dev->is_suspended)
                 return -EBUSY;
 
-        tegra_i2c_clock_enable(i2c_dev);
+        ret = tegra_i2c_clock_enable(i2c_dev);
+        if (ret < 0) {
+                dev_err(i2c_dev->dev, "Clock enable failed %d\n", ret);
+                return ret;
+        }
+
         for (i = 0; i < num; i++) {
                 enum msg_end_type end_type = MSG_END_STOP;
                 if (i < (num - 1)) {
diff --git a/drivers/i2c/muxes/i2c-mux-pca9541.c b/drivers/i2c/muxes/i2c-mux-pca9541.c
index f3b8f9a6a89b..966a18a5d12d 100644
--- a/drivers/i2c/muxes/i2c-mux-pca9541.c
+++ b/drivers/i2c/muxes/i2c-mux-pca9541.c
@@ -3,7 +3,7 @@
  *
  * Copyright (c) 2010 Ericsson AB.
  *
- * Author: Guenter Roeck <guenter.roeck@ericsson.com>
+ * Author: Guenter Roeck <linux@roeck-us.net>
  *
  * Derived from:
  *  pca954x.c
diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c
index 565bfb161c1a..a3fde52840ca 100644
--- a/drivers/infiniband/hw/cxgb4/cm.c
+++ b/drivers/infiniband/hw/cxgb4/cm.c
@@ -1575,6 +1575,12 @@ static int c4iw_reconnect(struct c4iw_ep *ep)
 
         neigh = dst_neigh_lookup(ep->dst,
                         &ep->com.cm_id->remote_addr.sin_addr.s_addr);
+        if (!neigh) {
+                pr_err("%s - cannot alloc neigh.\n", __func__);
+                err = -ENOMEM;
+                goto fail4;
+        }
+
         /* get a l2t entry */
         if (neigh->dev->flags & IFF_LOOPBACK) {
                 PDBG("%s LOOPBACK\n", __func__);
@@ -3053,6 +3059,12 @@ static int rx_pkt(struct c4iw_dev *dev, struct sk_buff *skb)
         dst = &rt->dst;
         neigh = dst_neigh_lookup_skb(dst, skb);
 
+        if (!neigh) {
+                pr_err("%s - failed to allocate neigh!\n",
+                       __func__);
+                goto free_dst;
+        }
+
         if (neigh->dev->flags & IFF_LOOPBACK) {
                 pdev = ip_dev_find(&init_net, iph->daddr);
                 e = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh,
diff --git a/drivers/infiniband/hw/cxgb4/qp.c b/drivers/infiniband/hw/cxgb4/qp.c
index 17ba4f8bc12d..70b1808a08f4 100644
--- a/drivers/infiniband/hw/cxgb4/qp.c
+++ b/drivers/infiniband/hw/cxgb4/qp.c
@@ -186,8 +186,10 @@ static int create_qp(struct c4iw_rdev *rdev, struct t4_wq *wq,
         wq->rq.queue = dma_alloc_coherent(&(rdev->lldi.pdev->dev),
                                           wq->rq.memsize, &(wq->rq.dma_addr),
                                           GFP_KERNEL);
-        if (!wq->rq.queue)
+        if (!wq->rq.queue) {
+                ret = -ENOMEM;
                 goto free_sq;
+        }
         PDBG("%s sq base va 0x%p pa 0x%llx rq base va 0x%p pa 0x%llx\n",
                 __func__, wq->sq.queue,
                 (unsigned long long)virt_to_phys(wq->sq.queue),
diff --git a/drivers/infiniband/hw/ipath/ipath_verbs.c b/drivers/infiniband/hw/ipath/ipath_verbs.c
index 439c35d4a669..ea93870266eb 100644
--- a/drivers/infiniband/hw/ipath/ipath_verbs.c
+++ b/drivers/infiniband/hw/ipath/ipath_verbs.c
@@ -620,7 +620,7 @@ void ipath_ib_rcv(struct ipath_ibdev *dev, void *rhdr, void *data,
                 goto bail;
         }
 
-        opcode = be32_to_cpu(ohdr->bth[0]) >> 24;
+        opcode = (be32_to_cpu(ohdr->bth[0]) >> 24) & 0x7f;
         dev->opstats[opcode].n_bytes += tlen;
         dev->opstats[opcode].n_packets++;
 
diff --git a/drivers/infiniband/hw/qib/Kconfig b/drivers/infiniband/hw/qib/Kconfig
index 8349f9c5064c..1e603a375069 100644
--- a/drivers/infiniband/hw/qib/Kconfig
+++ b/drivers/infiniband/hw/qib/Kconfig
@@ -1,7 +1,7 @@
 config INFINIBAND_QIB
-        tristate "QLogic PCIe HCA support"
+        tristate "Intel PCIe HCA support"
         depends on 64BIT
         ---help---
-        This is a low-level driver for QLogic PCIe QLE InfiniBand host
-        channel adapters.  This driver does not support the QLogic
+        This is a low-level driver for Intel PCIe QLE InfiniBand host
+        channel adapters.  This driver does not support the Intel
         HyperTransport card (model QHT7140).
diff --git a/drivers/infiniband/hw/qib/qib_driver.c b/drivers/infiniband/hw/qib/qib_driver.c
index 5423edcab51f..216092477dfc 100644
--- a/drivers/infiniband/hw/qib/qib_driver.c
+++ b/drivers/infiniband/hw/qib/qib_driver.c
@@ -1,4 +1,5 @@
 /*
+ * Copyright (c) 2013 Intel Corporation. All rights reserved.
  * Copyright (c) 2006, 2007, 2008, 2009 QLogic Corporation. All rights reserved.
  * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved.
  *
@@ -63,8 +64,8 @@ MODULE_PARM_DESC(compat_ddr_negotiate,
                  "Attempt pre-IBTA 1.2 DDR speed negotiation");
 
 MODULE_LICENSE("Dual BSD/GPL");
-MODULE_AUTHOR("QLogic <support@qlogic.com>");
-MODULE_DESCRIPTION("QLogic IB driver");
+MODULE_AUTHOR("Intel <ibsupport@intel.com>");
+MODULE_DESCRIPTION("Intel IB driver");
 MODULE_VERSION(QIB_DRIVER_VERSION);
 
 /*
diff --git a/drivers/infiniband/hw/qib/qib_iba6120.c b/drivers/infiniband/hw/qib/qib_iba6120.c
index a099ac171e22..0232ae56b1fa 100644
--- a/drivers/infiniband/hw/qib/qib_iba6120.c
+++ b/drivers/infiniband/hw/qib/qib_iba6120.c
@@ -1,4 +1,5 @@
 /*
+ * Copyright (c) 2013 Intel Corporation. All rights reserved.
  * Copyright (c) 2006, 2007, 2008, 2009, 2010 QLogic Corporation.
  * All rights reserved.
  * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved.
@@ -51,7 +52,7 @@ static u32 qib_6120_iblink_state(u64);
 
 /*
  * This file contains all the chip-specific register information and
- * access functions for the QLogic QLogic_IB PCI-Express chip.
+ * access functions for the Intel Intel_IB PCI-Express chip.
  *
  */
 
diff --git a/drivers/infiniband/hw/qib/qib_init.c b/drivers/infiniband/hw/qib/qib_init.c
index 50e33aa0b4e3..173f805790da 100644
--- a/drivers/infiniband/hw/qib/qib_init.c
+++ b/drivers/infiniband/hw/qib/qib_init.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012 Intel Corporation.  All rights reserved.
+ * Copyright (c) 2012, 2013 Intel Corporation.  All rights reserved.
  * Copyright (c) 2006 - 2012 QLogic Corporation. All rights reserved.
  * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved.
  *
@@ -1138,7 +1138,7 @@ void qib_disable_after_error(struct qib_devdata *dd)
 static void qib_remove_one(struct pci_dev *);
 static int qib_init_one(struct pci_dev *, const struct pci_device_id *);
 
-#define DRIVER_LOAD_MSG "QLogic " QIB_DRV_NAME " loaded: "
+#define DRIVER_LOAD_MSG "Intel " QIB_DRV_NAME " loaded: "
 #define PFX QIB_DRV_NAME ": "
 
 static DEFINE_PCI_DEVICE_TABLE(qib_pci_tbl) = {
@@ -1355,7 +1355,7 @@ static int qib_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
                 dd = qib_init_iba6120_funcs(pdev, ent);
 #else
                 qib_early_err(&pdev->dev,
-                        "QLogic PCIE device 0x%x cannot work if CONFIG_PCI_MSI is not enabled\n",
+                        "Intel PCIE device 0x%x cannot work if CONFIG_PCI_MSI is not enabled\n",
                         ent->device);
                 dd = ERR_PTR(-ENODEV);
 #endif
@@ -1371,7 +1371,7 @@ static int qib_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 
         default:
                 qib_early_err(&pdev->dev,
-                        "Failing on unknown QLogic deviceid 0x%x\n",
+                        "Failing on unknown Intel deviceid 0x%x\n",
                         ent->device);
                 ret = -ENODEV;
         }
diff --git a/drivers/infiniband/hw/qib/qib_sd7220.c b/drivers/infiniband/hw/qib/qib_sd7220.c
index 50a8a0d4fe67..08a6c6d39e56 100644
--- a/drivers/infiniband/hw/qib/qib_sd7220.c
+++ b/drivers/infiniband/hw/qib/qib_sd7220.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012 Intel Corporation. All rights reserved.
+ * Copyright (c) 2013 Intel Corporation. All rights reserved.
  * Copyright (c) 2006 - 2012 QLogic Corporation. All rights reserved.
  * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved.
  *
@@ -44,7 +44,7 @@
 #include "qib.h"
 #include "qib_7220.h"
 
-#define SD7220_FW_NAME "qlogic/sd7220.fw"
+#define SD7220_FW_NAME "intel/sd7220.fw"
 MODULE_FIRMWARE(SD7220_FW_NAME);
 
 /*
diff --git a/drivers/infiniband/hw/qib/qib_verbs.c b/drivers/infiniband/hw/qib/qib_verbs.c
index ba51a4715a1d..7c0ab16a2fe2 100644
--- a/drivers/infiniband/hw/qib/qib_verbs.c
+++ b/drivers/infiniband/hw/qib/qib_verbs.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012 Intel Corporation.  All rights reserved.
+ * Copyright (c) 2012, 2013 Intel Corporation.  All rights reserved.
  * Copyright (c) 2006 - 2012 QLogic Corporation. All rights reserved.
  * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved.
  *
@@ -2224,7 +2224,7 @@ int qib_register_ib_device(struct qib_devdata *dd)
         ibdev->dma_ops = &qib_dma_mapping_ops;
 
         snprintf(ibdev->node_desc, sizeof(ibdev->node_desc),
-                 "QLogic Infiniband HCA %s", init_utsname()->nodename);
+                 "Intel Infiniband HCA %s", init_utsname()->nodename);
 
         ret = ib_register_device(ibdev, qib_create_port_files);
         if (ret)
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_cm.c b/drivers/infiniband/ulp/ipoib/ipoib_cm.c
index 67b0c1d23678..1ef880de3a41 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_cm.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_cm.c
@@ -758,9 +758,13 @@ void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_
                 if (++priv->tx_outstanding == ipoib_sendq_size) {
                         ipoib_dbg(priv, "TX ring 0x%x full, stopping kernel net queue\n",
                                   tx->qp->qp_num);
-                        if (ib_req_notify_cq(priv->send_cq, IB_CQ_NEXT_COMP))
-                                ipoib_warn(priv, "request notify on send CQ failed\n");
                         netif_stop_queue(dev);
+                        rc = ib_req_notify_cq(priv->send_cq,
+                                IB_CQ_NEXT_COMP | IB_CQ_REPORT_MISSED_EVENTS);
+                        if (rc < 0)
+                                ipoib_warn(priv, "request notify on send CQ failed\n");
+                        else if (rc)
+                                ipoib_send_comp_handler(priv->send_cq, dev);
                 }
         }
 }
diff --git a/drivers/input/joystick/analog.c b/drivers/input/joystick/analog.c
index 7cd74e29cbc8..9135606c8649 100644
--- a/drivers/input/joystick/analog.c
+++ b/drivers/input/joystick/analog.c
@@ -158,14 +158,10 @@ static unsigned int get_time_pit(void)
 #define GET_TIME(x)     rdtscl(x)
 #define DELTA(x,y)      ((y)-(x))
 #define TIME_NAME       "TSC"
-#elif defined(__alpha__)
+#elif defined(__alpha__) || defined(CONFIG_MN10300) || defined(CONFIG_ARM) || defined(CONFIG_TILE)
 #define GET_TIME(x)     do { x = get_cycles(); } while (0)
 #define DELTA(x,y)      ((y)-(x))
-#define TIME_NAME       "PCC"
-#elif defined(CONFIG_MN10300) || defined(CONFIG_TILE)
-#define GET_TIME(x)     do { x = get_cycles(); } while (0)
-#define DELTA(x, y)     ((x) - (y))
-#define TIME_NAME       "TSC"
+#define TIME_NAME       "get_cycles"
 #else
 #define FAKE_TIME
 static unsigned long analog_faketime = 0;
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index 5c514d0711d1..c332fb98480d 100644
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig
@@ -130,7 +130,7 @@ config IRQ_REMAP
 # OMAP IOMMU support
 config OMAP_IOMMU
         bool "OMAP IOMMU Support"
-        depends on ARCH_OMAP
+        depends on ARCH_OMAP2PLUS
         select IOMMU_API
 
 config OMAP_IOVMM
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 98f555dafb55..b287ca33833d 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -2466,18 +2466,16 @@ static int device_change_notifier(struct notifier_block *nb,
 
                 /* allocate a protection domain if a device is added */
                 dma_domain = find_protection_domain(devid);
-                if (dma_domain)
-                        goto out;
-                dma_domain = dma_ops_domain_alloc();
-                if (!dma_domain)
-                        goto out;
-                dma_domain->target_dev = devid;
-
-                spin_lock_irqsave(&iommu_pd_list_lock, flags);
-                list_add_tail(&dma_domain->list, &iommu_pd_list);
-                spin_unlock_irqrestore(&iommu_pd_list_lock, flags);
-
-                dev_data = get_dev_data(dev);
+                if (!dma_domain) {
+                        dma_domain = dma_ops_domain_alloc();
+                        if (!dma_domain)
+                                goto out;
+                        dma_domain->target_dev = devid;
+
+                        spin_lock_irqsave(&iommu_pd_list_lock, flags);
+                        list_add_tail(&dma_domain->list, &iommu_pd_list);
+                        spin_unlock_irqrestore(&iommu_pd_list_lock, flags);
+                }
 
                 dev->archdata.dma_ops = &amd_iommu_dma_ops;
 
diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c
index b6ecddb63cd0..e3c2d74b7684 100644
--- a/drivers/iommu/amd_iommu_init.c
+++ b/drivers/iommu/amd_iommu_init.c
@@ -980,7 +980,7 @@ static void __init free_iommu_all(void)
  *     BIOS should disable L2B micellaneous clock gating by setting
  *     L2_L2B_CK_GATE_CONTROL[CKGateL2BMiscDisable](D0F2xF4_x90[2]) = 1b
  */
-static void __init amd_iommu_erratum_746_workaround(struct amd_iommu *iommu)
+static void amd_iommu_erratum_746_workaround(struct amd_iommu *iommu)
 {
         u32 value;
 
diff --git a/drivers/iommu/irq_remapping.c b/drivers/iommu/irq_remapping.c
index d56f8c17c5fe..7c11ff368d07 100644
--- a/drivers/iommu/irq_remapping.c
+++ b/drivers/iommu/irq_remapping.c
@@ -2,7 +2,6 @@
 #include <linux/cpumask.h>
 #include <linux/kernel.h>
 #include <linux/string.h>
-#include <linux/cpumask.h>
 #include <linux/errno.h>
 #include <linux/msi.h>
 #include <linux/irq.h>
diff --git a/drivers/isdn/hisax/Kconfig b/drivers/isdn/hisax/Kconfig
index 5313c9ea44dc..d9edcc94c2a8 100644
--- a/drivers/isdn/hisax/Kconfig
+++ b/drivers/isdn/hisax/Kconfig
@@ -237,7 +237,8 @@ config HISAX_MIC
 
 config HISAX_NETJET
         bool "NETjet card"
-        depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV || (XTENSA && !CPU_LITTLE_ENDIAN)))
+        depends on PCI && (BROKEN || !(PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV || (XTENSA && !CPU_LITTLE_ENDIAN)))
+        depends on VIRT_TO_BUS
         help
           This enables HiSax support for the NetJet from Traverse
           Technologies.
@@ -248,7 +249,8 @@ config HISAX_NETJET
 
 config HISAX_NETJET_U
         bool "NETspider U card"
-        depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV || (XTENSA && !CPU_LITTLE_ENDIAN)))
+        depends on PCI && (BROKEN || !(PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV || (XTENSA && !CPU_LITTLE_ENDIAN)))
+        depends on VIRT_TO_BUS
         help
           This enables HiSax support for the Netspider U interface ISDN card
           from Traverse Technologies.
diff --git a/drivers/md/dm-bufio.c b/drivers/md/dm-bufio.c
index 3c955e10a618..c6083132c4b8 100644
--- a/drivers/md/dm-bufio.c
+++ b/drivers/md/dm-bufio.c
@@ -1025,6 +1025,8 @@ void dm_bufio_prefetch(struct dm_bufio_client *c,
 {
         struct blk_plug plug;
 
+        BUG_ON(dm_bufio_in_request());
+
         blk_start_plug(&plug);
         dm_bufio_lock(c);
 
diff --git a/drivers/md/dm-cache-metadata.c b/drivers/md/dm-cache-metadata.c
index fbd3625f2748..83e995fece88 100644
--- a/drivers/md/dm-cache-metadata.c
+++ b/drivers/md/dm-cache-metadata.c
@@ -83,6 +83,8 @@ struct cache_disk_superblock {
         __le32 read_misses;
         __le32 write_hits;
         __le32 write_misses;
+
+        __le32 policy_version[CACHE_POLICY_VERSION_SIZE];
 } __packed;
 
 struct dm_cache_metadata {
@@ -109,6 +111,7 @@ struct dm_cache_metadata {
         bool clean_when_opened:1;
 
         char policy_name[CACHE_POLICY_NAME_SIZE];
+        unsigned policy_version[CACHE_POLICY_VERSION_SIZE];
         size_t policy_hint_size;
         struct dm_cache_statistics stats;
 };
@@ -268,7 +271,8 @@ static int __write_initial_superblock(struct dm_cache_metadata *cmd)
         memset(disk_super->uuid, 0, sizeof(disk_super->uuid));
         disk_super->magic = cpu_to_le64(CACHE_SUPERBLOCK_MAGIC);
         disk_super->version = cpu_to_le32(CACHE_VERSION);
-        memset(disk_super->policy_name, 0, CACHE_POLICY_NAME_SIZE);
+        memset(disk_super->policy_name, 0, sizeof(disk_super->policy_name));
+        memset(disk_super->policy_version, 0, sizeof(disk_super->policy_version));
         disk_super->policy_hint_size = 0;
 
         r = dm_sm_copy_root(cmd->metadata_sm, &disk_super->metadata_space_map_root,
@@ -284,7 +288,6 @@ static int __write_initial_superblock(struct dm_cache_metadata *cmd)
         disk_super->metadata_block_size = cpu_to_le32(DM_CACHE_METADATA_BLOCK_SIZE >> SECTOR_SHIFT);
         disk_super->data_block_size = cpu_to_le32(cmd->data_block_size);
         disk_super->cache_blocks = cpu_to_le32(0);
-        memset(disk_super->policy_name, 0, sizeof(disk_super->policy_name));
 
         disk_super->read_hits = cpu_to_le32(0);
         disk_super->read_misses = cpu_to_le32(0);
@@ -478,6 +481,9 @@ static void read_superblock_fields(struct dm_cache_metadata *cmd,
         cmd->data_block_size = le32_to_cpu(disk_super->data_block_size);
         cmd->cache_blocks = to_cblock(le32_to_cpu(disk_super->cache_blocks));
         strncpy(cmd->policy_name, disk_super->policy_name, sizeof(cmd->policy_name));
+        cmd->policy_version[0] = le32_to_cpu(disk_super->policy_version[0]);
+        cmd->policy_version[1] = le32_to_cpu(disk_super->policy_version[1]);
+        cmd->policy_version[2] = le32_to_cpu(disk_super->policy_version[2]);
         cmd->policy_hint_size = le32_to_cpu(disk_super->policy_hint_size);
 
         cmd->stats.read_hits = le32_to_cpu(disk_super->read_hits);
@@ -572,6 +578,9 @@ static int __commit_transaction(struct dm_cache_metadata *cmd,
         disk_super->discard_nr_blocks = cpu_to_le64(from_dblock(cmd->discard_nr_blocks));
         disk_super->cache_blocks = cpu_to_le32(from_cblock(cmd->cache_blocks));
         strncpy(disk_super->policy_name, cmd->policy_name, sizeof(disk_super->policy_name));
+        disk_super->policy_version[0] = cpu_to_le32(cmd->policy_version[0]);
+        disk_super->policy_version[1] = cpu_to_le32(cmd->policy_version[1]);
+        disk_super->policy_version[2] = cpu_to_le32(cmd->policy_version[2]);
 
         disk_super->read_hits = cpu_to_le32(cmd->stats.read_hits);
         disk_super->read_misses = cpu_to_le32(cmd->stats.read_misses);
@@ -854,18 +863,43 @@ struct thunk {
         bool hints_valid;
 };
 
+static bool policy_unchanged(struct dm_cache_metadata *cmd,
+                             struct dm_cache_policy *policy)
+{
+        const char *policy_name = dm_cache_policy_get_name(policy);
+        const unsigned *policy_version = dm_cache_policy_get_version(policy);
+        size_t policy_hint_size = dm_cache_policy_get_hint_size(policy);
+
+        /*
+         * Ensure policy names match.
+         */
+        if (strncmp(cmd->policy_name, policy_name, sizeof(cmd->policy_name)))
+                return false;
+
+        /*
+         * Ensure policy major versions match.
+         */
+        if (cmd->policy_version[0] != policy_version[0])
+                return false;
+
+        /*
+         * Ensure policy hint sizes match.
+         */
+        if (cmd->policy_hint_size != policy_hint_size)
+                return false;
+
+        return true;
+}
+
 static bool hints_array_initialized(struct dm_cache_metadata *cmd)
 {
         return cmd->hint_root && cmd->policy_hint_size;
 }
 
 static bool hints_array_available(struct dm_cache_metadata *cmd,
-                                  const char *policy_name)
+                                  struct dm_cache_policy *policy)
 {
-        bool policy_names_match = !strncmp(cmd->policy_name, policy_name,
-                                           sizeof(cmd->policy_name));
-
-        return cmd->clean_when_opened && policy_names_match &&
+        return cmd->clean_when_opened && policy_unchanged(cmd, policy) &&
                 hints_array_initialized(cmd);
 }
 
@@ -899,7 +933,8 @@ static int __load_mapping(void *context, uint64_t cblock, void *leaf)
         return r;
 }
 
-static int __load_mappings(struct dm_cache_metadata *cmd, const char *policy_name,
+static int __load_mappings(struct dm_cache_metadata *cmd,
+                           struct dm_cache_policy *policy,
                            load_mapping_fn fn, void *context)
 {
         struct thunk thunk;
@@ -909,18 +944,19 @@ static int __load_mappings(struct dm_cache_metadata *cmd, const char *policy_nam
 
         thunk.cmd = cmd;
         thunk.respect_dirty_flags = cmd->clean_when_opened;
-        thunk.hints_valid = hints_array_available(cmd, policy_name);
+        thunk.hints_valid = hints_array_available(cmd, policy);
 
         return dm_array_walk(&cmd->info, cmd->root, __load_mapping, &thunk);
 }
 
-int dm_cache_load_mappings(struct dm_cache_metadata *cmd, const char *policy_name,
+int dm_cache_load_mappings(struct dm_cache_metadata *cmd,
+                           struct dm_cache_policy *policy,
                            load_mapping_fn fn, void *context)
 {
         int r;
 
         down_read(&cmd->root_lock);
-        r = __load_mappings(cmd, policy_name, fn, context);
+        r = __load_mappings(cmd, policy, fn, context);
         up_read(&cmd->root_lock);
 
         return r;
@@ -979,7 +1015,7 @@ static int __dirty(struct dm_cache_metadata *cmd, dm_cblock_t cblock, bool dirty
                 /* nothing to be done */
                 return 0;
 
-        value = pack_value(oblock, flags | (dirty ? M_DIRTY : 0));
+        value = pack_value(oblock, (flags & ~M_DIRTY) | (dirty ? M_DIRTY : 0));
         __dm_bless_for_disk(&value);
 
         r = dm_array_set_value(&cmd->info, cmd->root, from_cblock(cblock),
@@ -1070,13 +1106,15 @@ static int begin_hints(struct dm_cache_metadata *cmd, struct dm_cache_policy *po
         __le32 value;
         size_t hint_size;
         const char *policy_name = dm_cache_policy_get_name(policy);
+        const unsigned *policy_version = dm_cache_policy_get_version(policy);
 
         if (!policy_name[0] ||
             (strlen(policy_name) > sizeof(cmd->policy_name) - 1))
                 return -EINVAL;
 
-        if (strcmp(cmd->policy_name, policy_name)) {
+        if (!policy_unchanged(cmd, policy)) {
                 strncpy(cmd->policy_name, policy_name, sizeof(cmd->policy_name));
+                memcpy(cmd->policy_version, policy_version, sizeof(cmd->policy_version));
 
                 hint_size = dm_cache_policy_get_hint_size(policy);
                 if (!hint_size)
diff --git a/drivers/md/dm-cache-metadata.h b/drivers/md/dm-cache-metadata.h
index 135864ea0eee..f45cef21f3d0 100644
--- a/drivers/md/dm-cache-metadata.h
+++ b/drivers/md/dm-cache-metadata.h
@@ -89,7 +89,7 @@ typedef int (*load_mapping_fn)(void *context, dm_oblock_t oblock,
                                dm_cblock_t cblock, bool dirty,
                                uint32_t hint, bool hint_valid);
 int dm_cache_load_mappings(struct dm_cache_metadata *cmd,
-                           const char *policy_name,
+                           struct dm_cache_policy *policy,
                            load_mapping_fn fn,
                            void *context);
 
diff --git a/drivers/md/dm-cache-policy-cleaner.c b/drivers/md/dm-cache-policy-cleaner.c
index cc05d70b3cb8..b04d1f904d07 100644
--- a/drivers/md/dm-cache-policy-cleaner.c
+++ b/drivers/md/dm-cache-policy-cleaner.c
@@ -17,7 +17,6 @@
 /*----------------------------------------------------------------*/
 
 #define DM_MSG_PREFIX "cache cleaner"
-#define CLEANER_VERSION "1.0.0"
 
 /* Cache entry struct. */
 struct wb_cache_entry {
@@ -434,6 +433,7 @@ static struct dm_cache_policy *wb_create(dm_cblock_t cache_size,
 
 static struct dm_cache_policy_type wb_policy_type = {
         .name = "cleaner",
+        .version = {1, 0, 0},
         .hint_size = 0,
         .owner = THIS_MODULE,
         .create = wb_create
@@ -446,7 +446,10 @@ static int __init wb_init(void)
         if (r < 0)
                 DMERR("register failed %d", r);
         else
-                DMINFO("version " CLEANER_VERSION " loaded");
+                DMINFO("version %u.%u.%u loaded",
+                       wb_policy_type.version[0],
+                       wb_policy_type.version[1],
+                       wb_policy_type.version[2]);
 
         return r;
 }
diff --git a/drivers/md/dm-cache-policy-internal.h b/drivers/md/dm-cache-policy-internal.h
index 52a75beeced5..0928abdc49f0 100644
--- a/drivers/md/dm-cache-policy-internal.h
+++ b/drivers/md/dm-cache-policy-internal.h
@@ -117,6 +117,8 @@ void dm_cache_policy_destroy(struct dm_cache_policy *p);
  */
 const char *dm_cache_policy_get_name(struct dm_cache_policy *p);
 
+const unsigned *dm_cache_policy_get_version(struct dm_cache_policy *p);
+
 size_t dm_cache_policy_get_hint_size(struct dm_cache_policy *p);
 
 /*----------------------------------------------------------------*/
diff --git a/drivers/md/dm-cache-policy-mq.c b/drivers/md/dm-cache-policy-mq.c
index 964153255076..dc112a7137fe 100644
--- a/drivers/md/dm-cache-policy-mq.c
+++ b/drivers/md/dm-cache-policy-mq.c
@@ -14,7 +14,6 @@
 #include <linux/vmalloc.h>
 
 #define DM_MSG_PREFIX "cache-policy-mq"
-#define MQ_VERSION      "1.0.0"
 
 static struct kmem_cache *mq_entry_cache;
 
@@ -1133,6 +1132,7 @@ bad_cache_alloc:
 
 static struct dm_cache_policy_type mq_policy_type = {
         .name = "mq",
+        .version = {1, 0, 0},
         .hint_size = 4,
         .owner = THIS_MODULE,
         .create = mq_create
@@ -1140,6 +1140,7 @@ static struct dm_cache_policy_type mq_policy_type = {
 
 static struct dm_cache_policy_type default_policy_type = {
         .name = "default",
+        .version = {1, 0, 0},
         .hint_size = 4,
         .owner = THIS_MODULE,
         .create = mq_create
@@ -1164,7 +1165,10 @@ static int __init mq_init(void)
 
         r = dm_cache_policy_register(&default_policy_type);
         if (!r) {
-                DMINFO("version " MQ_VERSION " loaded");
+                DMINFO("version %u.%u.%u loaded",
+                       mq_policy_type.version[0],
+                       mq_policy_type.version[1],
+                       mq_policy_type.version[2]);
                 return 0;
         }
 
diff --git a/drivers/md/dm-cache-policy.c b/drivers/md/dm-cache-policy.c
index 2cbf5fdaac52..21c03c570c06 100644
--- a/drivers/md/dm-cache-policy.c
+++ b/drivers/md/dm-cache-policy.c
@@ -150,6 +150,14 @@ const char *dm_cache_policy_get_name(struct dm_cache_policy *p)
 }
 EXPORT_SYMBOL_GPL(dm_cache_policy_get_name);
 
+const unsigned *dm_cache_policy_get_version(struct dm_cache_policy *p)
+{
+        struct dm_cache_policy_type *t = p->private;
+
+        return t->version;
+}
+EXPORT_SYMBOL_GPL(dm_cache_policy_get_version);
+
 size_t dm_cache_policy_get_hint_size(struct dm_cache_policy *p)
 {
         struct dm_cache_policy_type *t = p->private;
diff --git a/drivers/md/dm-cache-policy.h b/drivers/md/dm-cache-policy.h
index f0f51b260544..558bdfdabf5f 100644
--- a/drivers/md/dm-cache-policy.h
+++ b/drivers/md/dm-cache-policy.h
@@ -196,6 +196,7 @@ struct dm_cache_policy {
  * We maintain a little register of the different policy types.
  */
 #define CACHE_POLICY_NAME_SIZE 16
+#define CACHE_POLICY_VERSION_SIZE 3
 
 struct dm_cache_policy_type {
         /* For use by the register code only. */
@@ -206,6 +207,7 @@ struct dm_cache_policy_type {
          * what gets passed on the target line to select your policy.
          */
         char name[CACHE_POLICY_NAME_SIZE];
+        unsigned version[CACHE_POLICY_VERSION_SIZE];
 
         /*
          * Policies may store a hint for each each cache block.
diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c
index 0f4e84b15c30..66120bd46d15 100644
--- a/drivers/md/dm-cache-target.c
+++ b/drivers/md/dm-cache-target.c
@@ -142,6 +142,7 @@ struct cache {
         spinlock_t lock;
         struct bio_list deferred_bios;
         struct bio_list deferred_flush_bios;
+        struct bio_list deferred_writethrough_bios;
         struct list_head quiesced_migrations;
         struct list_head completed_migrations;
         struct list_head need_commit_migrations;
@@ -158,7 +159,7 @@ struct cache {
         /*
          * origin_blocks entries, discarded if set.
          */
-        sector_t discard_block_size; /* a power of 2 times sectors per block */
+        uint32_t discard_block_size; /* a power of 2 times sectors per block */
         dm_dblock_t discard_nr_blocks;
         unsigned long *discard_bitset;
 
@@ -199,6 +200,11 @@ struct per_bio_data {
         bool tick:1;
         unsigned req_nr:2;
         struct dm_deferred_entry *all_io_entry;
+
+        /* writethrough fields */
+        struct cache *cache;
+        dm_cblock_t cblock;
+        bio_end_io_t *saved_bi_end_io;
 };
 
 struct dm_cache_migration {
@@ -412,17 +418,24 @@ static bool block_size_is_power_of_two(struct cache *cache)
         return cache->sectors_per_block_shift >= 0;
 }
 
+static dm_block_t block_div(dm_block_t b, uint32_t n)
+{
+        do_div(b, n);
+
+        return b;
+}
+
 static dm_dblock_t oblock_to_dblock(struct cache *cache, dm_oblock_t oblock)
 {
-        sector_t discard_blocks = cache->discard_block_size;
+        uint32_t discard_blocks = cache->discard_block_size;
         dm_block_t b = from_oblock(oblock);
 
         if (!block_size_is_power_of_two(cache))
-                (void) sector_div(discard_blocks, cache->sectors_per_block);
+                discard_blocks = discard_blocks / cache->sectors_per_block;
         else
                 discard_blocks >>= cache->sectors_per_block_shift;
 
-        (void) sector_div(b, discard_blocks);
+        b = block_div(b, discard_blocks);
 
         return to_dblock(b);
 }
@@ -609,6 +622,56 @@ static void issue(struct cache *cache, struct bio *bio)
         spin_unlock_irqrestore(&cache->lock, flags);
 }
 
+static void defer_writethrough_bio(struct cache *cache, struct bio *bio)
+{
+        unsigned long flags;
+
+        spin_lock_irqsave(&cache->lock, flags);
+        bio_list_add(&cache->deferred_writethrough_bios, bio);
+        spin_unlock_irqrestore(&cache->lock, flags);
+
+        wake_worker(cache);
+}
+
+static void writethrough_endio(struct bio *bio, int err)
+{
+        struct per_bio_data *pb = get_per_bio_data(bio);
+        bio->bi_end_io = pb->saved_bi_end_io;
+
+        if (err) {
+                bio_endio(bio, err);
+                return;
+        }
+
+        remap_to_cache(pb->cache, bio, pb->cblock);
+
+        /*
+         * We can't issue this bio directly, since we're in interrupt
+         * context.  So it get's put on a bio list for processing by the
+         * worker thread.
+         */
+        defer_writethrough_bio(pb->cache, bio);
+}
+
+/*
+ * When running in writethrough mode we need to send writes to clean blocks
+ * to both the cache and origin devices.  In future we'd like to clone the
+ * bio and send them in parallel, but for now we're doing them in
+ * series as this is easier.
+ */
+static void remap_to_origin_then_cache(struct cache *cache, struct bio *bio,
+                                       dm_oblock_t oblock, dm_cblock_t cblock)
+{
+        struct per_bio_data *pb = get_per_bio_data(bio);
+
+        pb->cache = cache;
+        pb->cblock = cblock;
+        pb->saved_bi_end_io = bio->bi_end_io;
+        bio->bi_end_io = writethrough_endio;
+
+        remap_to_origin_clear_discard(pb->cache, bio, oblock);
+}
+
 /*----------------------------------------------------------------
  * Migration processing
  *
@@ -1002,7 +1065,7 @@ static void process_discard_bio(struct cache *cache, struct bio *bio)
         dm_block_t end_block = bio->bi_sector + bio_sectors(bio);
         dm_block_t b;
 
-        (void) sector_div(end_block, cache->discard_block_size);
+        end_block = block_div(end_block, cache->discard_block_size);
 
         for (b = start_block; b < end_block; b++)
                 set_discard(cache, to_dblock(b));
@@ -1070,14 +1133,9 @@ static void process_bio(struct cache *cache, struct prealloc *structs,
                 inc_hit_counter(cache, bio);
                 pb->all_io_entry = dm_deferred_entry_inc(cache->all_io_ds);
 
-                if (is_writethrough_io(cache, bio, lookup_result.cblock)) {
-                        /*
-                         * No need to mark anything dirty in write through mode.
-                         */
-                        pb->req_nr == 0 ?
-                                remap_to_cache(cache, bio, lookup_result.cblock) :
-                                remap_to_origin_clear_discard(cache, bio, block);
-                } else
+                if (is_writethrough_io(cache, bio, lookup_result.cblock))
+                        remap_to_origin_then_cache(cache, bio, block, lookup_result.cblock);
+                else
                         remap_to_cache_dirty(cache, bio, block, lookup_result.cblock);
 
                 issue(cache, bio);
@@ -1086,17 +1144,8 @@ static void process_bio(struct cache *cache, struct prealloc *structs,
         case POLICY_MISS:
                 inc_miss_counter(cache, bio);
                 pb->all_io_entry = dm_deferred_entry_inc(cache->all_io_ds);
-
-                if (pb->req_nr != 0) {
-                        /*
-                         * This is a duplicate writethrough io that is no
-                         * longer needed because the block has been demoted.
-                         */
-                        bio_endio(bio, 0);
-                } else {
-                        remap_to_origin_clear_discard(cache, bio, block);
-                        issue(cache, bio);
-                }
+                remap_to_origin_clear_discard(cache, bio, block);
+                issue(cache, bio);
                 break;
 
         case POLICY_NEW:
@@ -1217,6 +1266,23 @@ static void process_deferred_flush_bios(struct cache *cache, bool submit_bios)
                 submit_bios ? generic_make_request(bio) : bio_io_error(bio);
 }
 
+static void process_deferred_writethrough_bios(struct cache *cache)
+{
+        unsigned long flags;
+        struct bio_list bios;
+        struct bio *bio;
+
+        bio_list_init(&bios);
+
+        spin_lock_irqsave(&cache->lock, flags);
+        bio_list_merge(&bios, &cache->deferred_writethrough_bios);
+        bio_list_init(&cache->deferred_writethrough_bios);
+        spin_unlock_irqrestore(&cache->lock, flags);
+
+        while ((bio = bio_list_pop(&bios)))
+                generic_make_request(bio);
+}
+
 static void writeback_some_dirty_blocks(struct cache *cache)
 {
         int r = 0;
@@ -1313,6 +1379,7 @@ static int more_work(struct cache *cache)
         else
                 return !bio_list_empty(&cache->deferred_bios) ||
                         !bio_list_empty(&cache->deferred_flush_bios) ||
+                        !bio_list_empty(&cache->deferred_writethrough_bios) ||
                         !list_empty(&cache->quiesced_migrations) ||
                         !list_empty(&cache->completed_migrations) ||
                         !list_empty(&cache->need_commit_migrations);
@@ -1331,6 +1398,8 @@ static void do_worker(struct work_struct *ws)
 
                 writeback_some_dirty_blocks(cache);
 
+                process_deferred_writethrough_bios(cache);
+
                 if (commit_if_needed(cache)) {
                         process_deferred_flush_bios(cache, false);
 
@@ -1756,8 +1825,11 @@ static int create_cache_policy(struct cache *cache, struct cache_args *ca,
         }
 
         r = set_config_values(cache->policy, ca->policy_argc, ca->policy_argv);
-        if (r)
+        if (r) {
+                *error = "Error setting cache policy's config values";
                 dm_cache_policy_destroy(cache->policy);
+                cache->policy = NULL;
+        }
 
         return r;
 }
@@ -1793,8 +1865,6 @@ static sector_t calculate_discard_block_size(sector_t cache_block_size,
 
 #define DEFAULT_MIGRATION_THRESHOLD (2048 * 100)
 
-static unsigned cache_num_write_bios(struct dm_target *ti, struct bio *bio);
-
 static int cache_create(struct cache_args *ca, struct cache **result)
 {
         int r = 0;
@@ -1821,9 +1891,6 @@ static int cache_create(struct cache_args *ca, struct cache **result)
 
         memcpy(&cache->features, &ca->features, sizeof(cache->features));
 
-        if (cache->features.write_through)
-                ti->num_write_bios = cache_num_write_bios;
-
         cache->callbacks.congested_fn = cache_is_congested;
         dm_table_add_target_callbacks(ti->table, &cache->callbacks);
 
@@ -1835,7 +1902,7 @@ static int cache_create(struct cache_args *ca, struct cache **result)
 
         /* FIXME: factor out this whole section */
         origin_blocks = cache->origin_sectors = ca->origin_sectors;
-        (void) sector_div(origin_blocks, ca->block_size);
+        origin_blocks = block_div(origin_blocks, ca->block_size);
         cache->origin_blocks = to_oblock(origin_blocks);
 
         cache->sectors_per_block = ca->block_size;
@@ -1848,7 +1915,7 @@ static int cache_create(struct cache_args *ca, struct cache **result)
                 dm_block_t cache_size = ca->cache_sectors;
 
                 cache->sectors_per_block_shift = -1;
-                (void) sector_div(cache_size, ca->block_size);
+                cache_size = block_div(cache_size, ca->block_size);
                 cache->cache_size = to_cblock(cache_size);
         } else {
                 cache->sectors_per_block_shift = __ffs(ca->block_size);
@@ -1873,6 +1940,7 @@ static int cache_create(struct cache_args *ca, struct cache **result)
         spin_lock_init(&cache->lock);
         bio_list_init(&cache->deferred_bios);
         bio_list_init(&cache->deferred_flush_bios);
+        bio_list_init(&cache->deferred_writethrough_bios);
         INIT_LIST_HEAD(&cache->quiesced_migrations);
         INIT_LIST_HEAD(&cache->completed_migrations);
         INIT_LIST_HEAD(&cache->need_commit_migrations);
@@ -2002,6 +2070,8 @@ static int cache_ctr(struct dm_target *ti, unsigned argc, char **argv)
                 goto out;
 
         r = cache_create(ca, &cache);
+        if (r)
+                goto out;
 
         r = copy_ctr_args(cache, argc - 3, (const char **)argv + 3);
         if (r) {
@@ -2016,20 +2086,6 @@ out:
         return r;
 }
 
-static unsigned cache_num_write_bios(struct dm_target *ti, struct bio *bio)
-{
-        int r;
-        struct cache *cache = ti->private;
-        dm_oblock_t block = get_bio_block(cache, bio);
-        dm_cblock_t cblock;
-
-        r = policy_lookup(cache->policy, block, &cblock);
-        if (r < 0)
-                return 2;       /* assume the worst */
-
-        return (!r && !is_dirty(cache, cblock)) ? 2 : 1;
-}
-
 static int cache_map(struct dm_target *ti, struct bio *bio)
 {
         struct cache *cache = ti->private;
@@ -2097,18 +2153,12 @@ static int cache_map(struct dm_target *ti, struct bio *bio)
                 inc_hit_counter(cache, bio);
                 pb->all_io_entry = dm_deferred_entry_inc(cache->all_io_ds);
 
-                if (is_writethrough_io(cache, bio, lookup_result.cblock)) {
-                        /*
-                         * No need to mark anything dirty in write through mode.
-                         */
-                        pb->req_nr == 0 ?
-                                remap_to_cache(cache, bio, lookup_result.cblock) :
-                                remap_to_origin_clear_discard(cache, bio, block);
-                        cell_defer(cache, cell, false);
-                } else {
+                if (is_writethrough_io(cache, bio, lookup_result.cblock))
+                        remap_to_origin_then_cache(cache, bio, block, lookup_result.cblock);
+                else
                         remap_to_cache_dirty(cache, bio, block, lookup_result.cblock);
-                        cell_defer(cache, cell, false);
-                }
+
+                cell_defer(cache, cell, false);
                 break;
 
         case POLICY_MISS:
@@ -2319,8 +2369,7 @@ static int cache_preresume(struct dm_target *ti)
         }
 
         if (!cache->loaded_mappings) {
-                r = dm_cache_load_mappings(cache->cmd,
-                                           dm_cache_policy_get_name(cache->policy),
+                r = dm_cache_load_mappings(cache->cmd, cache->policy,
                                            load_mapping, cache);
                 if (r) {
                         DMERR("could not load cache mappings");
@@ -2535,7 +2584,7 @@ static void cache_io_hints(struct dm_target *ti, struct queue_limits *limits)
 
 static struct target_type cache_target = {
         .name = "cache",
-        .version = {1, 0, 0},
+        .version = {1, 1, 0},
         .module = THIS_MODULE,
         .ctr = cache_ctr,
         .dtr = cache_dtr,
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index 009339d62828..004ad1652b73 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -1577,6 +1577,11 @@ static bool data_dev_supports_discard(struct pool_c *pt)
         return q && blk_queue_discard(q);
 }
 
+static bool is_factor(sector_t block_size, uint32_t n)
+{
+        return !sector_div(block_size, n);
+}
+
 /*
  * If discard_passdown was enabled verify that the data device
  * supports discards.  Disable discard_passdown if not.
@@ -1602,7 +1607,7 @@ static void disable_passdown_if_not_supported(struct pool_c *pt)
         else if (data_limits->discard_granularity > block_size)
                 reason = "discard granularity larger than a block";
 
-        else if (block_size & (data_limits->discard_granularity - 1))
+        else if (!is_factor(block_size, data_limits->discard_granularity))
                 reason = "discard granularity not a factor of block size";
 
         if (reason) {
@@ -2544,7 +2549,7 @@ static struct target_type pool_target = {
         .name = "thin-pool",
         .features = DM_TARGET_SINGLETON | DM_TARGET_ALWAYS_WRITEABLE |
                     DM_TARGET_IMMUTABLE,
-        .version = {1, 6, 1},
+        .version = {1, 7, 0},
         .module = THIS_MODULE,
         .ctr = pool_ctr,
         .dtr = pool_dtr,
@@ -2831,7 +2836,7 @@ static int thin_iterate_devices(struct dm_target *ti,
 
 static struct target_type thin_target = {
         .name = "thin",
-        .version = {1, 7, 1},
+        .version = {1, 8, 0},
         .module = THIS_MODULE,
         .ctr = thin_ctr,
         .dtr = thin_dtr,
diff --git a/drivers/md/dm-verity.c b/drivers/md/dm-verity.c
index 4f06d9adf1ed..b948fd864d45 100644
--- a/drivers/md/dm-verity.c
+++ b/drivers/md/dm-verity.c
@@ -93,6 +93,13 @@ struct dm_verity_io {
          */
 };
 
+struct dm_verity_prefetch_work {
+        struct work_struct work;
+        struct dm_verity *v;
+        sector_t block;
+        unsigned n_blocks;
+};
+
 static struct shash_desc *io_hash_desc(struct dm_verity *v, struct dm_verity_io *io)
 {
         return (struct shash_desc *)(io + 1);
@@ -424,15 +431,18 @@ static void verity_end_io(struct bio *bio, int error)
  * The root buffer is not prefetched, it is assumed that it will be cached
  * all the time.
  */
-static void verity_prefetch_io(struct dm_verity *v, struct dm_verity_io *io)
+static void verity_prefetch_io(struct work_struct *work)
 {
+        struct dm_verity_prefetch_work *pw =
+                container_of(work, struct dm_verity_prefetch_work, work);
+        struct dm_verity *v = pw->v;
         int i;
 
         for (i = v->levels - 2; i >= 0; i--) {
                 sector_t hash_block_start;
                 sector_t hash_block_end;
-                verity_hash_at_level(v, io->block, i, &hash_block_start, NULL);
-                verity_hash_at_level(v, io->block + io->n_blocks - 1, i, &hash_block_end, NULL);
+                verity_hash_at_level(v, pw->block, i, &hash_block_start, NULL);
+                verity_hash_at_level(v, pw->block + pw->n_blocks - 1, i, &hash_block_end, NULL);
                 if (!i) {
                         unsigned cluster = ACCESS_ONCE(dm_verity_prefetch_cluster);
 
@@ -452,6 +462,25 @@ no_prefetch_cluster:
                 dm_bufio_prefetch(v->bufio, hash_block_start,
                                   hash_block_end - hash_block_start + 1);
         }
+
+        kfree(pw);
+}
+
+static void verity_submit_prefetch(struct dm_verity *v, struct dm_verity_io *io)
+{
+        struct dm_verity_prefetch_work *pw;
+
+        pw = kmalloc(sizeof(struct dm_verity_prefetch_work),
+                GFP_NOIO | __GFP_NORETRY | __GFP_NOMEMALLOC | __GFP_NOWARN);
+
+        if (!pw)
+                return;
+
+        INIT_WORK(&pw->work, verity_prefetch_io);
+        pw->v = v;
+        pw->block = io->block;
+        pw->n_blocks = io->n_blocks;
+        queue_work(v->verify_wq, &pw->work);
 }
 
 /*
@@ -498,7 +527,7 @@ static int verity_map(struct dm_target *ti, struct bio *bio)
         memcpy(io->io_vec, bio_iovec(bio),
                io->io_vec_size * sizeof(struct bio_vec));
 
-        verity_prefetch_io(v, io);
+        verity_submit_prefetch(v, io);
 
         generic_make_request(bio);
 
@@ -858,7 +887,7 @@ bad:
 
 static struct target_type verity_target = {
         .name           = "verity",
-        .version        = {1, 1, 1},
+        .version        = {1, 2, 0},
         .module         = THIS_MODULE,
         .ctr            = verity_ctr,
         .dtr            = verity_dtr,
diff --git a/drivers/md/md.c b/drivers/md/md.c
index d323676580a9..1d03ebde40b5 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -7654,10 +7654,8 @@ static int remove_and_add_spares(struct mddev *mddev)
                                 removed++;
                         }
                 }
-        if (removed)
-                sysfs_notify(&mddev->kobj, NULL,
-                             "degraded");
-
+        if (removed && mddev->kobj.sd)
+                sysfs_notify(&mddev->kobj, NULL, "degraded");
 
         rdev_for_each(rdev, mddev) {
                 if (rdev->raid_disk >= 0 &&
diff --git a/drivers/md/md.h b/drivers/md/md.h
index eca59c3074ef..d90fb1a879e1 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -506,7 +506,7 @@ static inline char * mdname (struct mddev * mddev)
 static inline int sysfs_link_rdev(struct mddev *mddev, struct md_rdev *rdev)
 {
         char nm[20];
-        if (!test_bit(Replacement, &rdev->flags)) {
+        if (!test_bit(Replacement, &rdev->flags) && mddev->kobj.sd) {
                 sprintf(nm, "rd%d", rdev->raid_disk);
                 return sysfs_create_link(&mddev->kobj, &rdev->kobj, nm);
         } else
@@ -516,7 +516,7 @@ static inline int sysfs_link_rdev(struct mddev *mddev, struct md_rdev *rdev)
 static inline void sysfs_unlink_rdev(struct mddev *mddev, struct md_rdev *rdev)
 {
         char nm[20];
-        if (!test_bit(Replacement, &rdev->flags)) {
+        if (!test_bit(Replacement, &rdev->flags) && mddev->kobj.sd) {
                 sprintf(nm, "rd%d", rdev->raid_disk);
                 sysfs_remove_link(&mddev->kobj, nm);
         }
diff --git a/drivers/md/persistent-data/dm-btree-remove.c b/drivers/md/persistent-data/dm-btree-remove.c
index c4f28133ef82..b88757cd0d1d 100644
--- a/drivers/md/persistent-data/dm-btree-remove.c
+++ b/drivers/md/persistent-data/dm-btree-remove.c
@@ -139,15 +139,8 @@ struct child {
         struct btree_node *n;
 };
 
-static struct dm_btree_value_type le64_type = {
-        .context = NULL,
-        .size = sizeof(__le64),
-        .inc = NULL,
-        .dec = NULL,
-        .equal = NULL
-};
-
-static int init_child(struct dm_btree_info *info, struct btree_node *parent,
+static int init_child(struct dm_btree_info *info, struct dm_btree_value_type *vt,
+                      struct btree_node *parent,
                       unsigned index, struct child *result)
 {
         int r, inc;
@@ -164,7 +157,7 @@ static int init_child(struct dm_btree_info *info, struct btree_node *parent,
         result->n = dm_block_data(result->block);
 
         if (inc)
-                inc_children(info->tm, result->n, &le64_type);
+                inc_children(info->tm, result->n, vt);
 
         *((__le64 *) value_ptr(parent, index)) =
                 cpu_to_le64(dm_block_location(result->block));
@@ -236,7 +229,7 @@ static void __rebalance2(struct dm_btree_info *info, struct btree_node *parent,
 }
 
 static int rebalance2(struct shadow_spine *s, struct dm_btree_info *info,
-                      unsigned left_index)
+                      struct dm_btree_value_type *vt, unsigned left_index)
 {
         int r;
         struct btree_node *parent;
@@ -244,11 +237,11 @@ static int rebalance2(struct shadow_spine *s, struct dm_btree_info *info,
 
         parent = dm_block_data(shadow_current(s));
 
-        r = init_child(info, parent, left_index, &left);
+        r = init_child(info, vt, parent, left_index, &left);
         if (r)
                 return r;
 
-        r = init_child(info, parent, left_index + 1, &right);
+        r = init_child(info, vt, parent, left_index + 1, &right);
         if (r) {
                 exit_child(info, &left);
                 return r;
@@ -368,7 +361,7 @@ static void __rebalance3(struct dm_btree_info *info, struct btree_node *parent,
 }
 
 static int rebalance3(struct shadow_spine *s, struct dm_btree_info *info,
-                      unsigned left_index)
+                      struct dm_btree_value_type *vt, unsigned left_index)
 {
         int r;
         struct btree_node *parent = dm_block_data(shadow_current(s));
@@ -377,17 +370,17 @@ static int rebalance3(struct shadow_spine *s, struct dm_btree_info *info,
         /*
          * FIXME: fill out an array?
          */
-        r = init_child(info, parent, left_index, &left);
+        r = init_child(info, vt, parent, left_index, &left);
         if (r)
                 return r;
 
-        r = init_child(info, parent, left_index + 1, &center);
+        r = init_child(info, vt, parent, left_index + 1, &center);
         if (r) {
                 exit_child(info, &left);
                 return r;
         }
 
-        r = init_child(info, parent, left_index + 2, &right);
+        r = init_child(info, vt, parent, left_index + 2, &right);
         if (r) {
                 exit_child(info, &left);
                 exit_child(info, &center);
@@ -434,7 +427,8 @@ static int get_nr_entries(struct dm_transaction_manager *tm,
 }
 
 static int rebalance_children(struct shadow_spine *s,
-                              struct dm_btree_info *info, uint64_t key)
+                              struct dm_btree_info *info,
+                              struct dm_btree_value_type *vt, uint64_t key)
 {
         int i, r, has_left_sibling, has_right_sibling;
         uint32_t child_entries;
@@ -472,13 +466,13 @@ static int rebalance_children(struct shadow_spine *s,
         has_right_sibling = i < (le32_to_cpu(n->header.nr_entries) - 1);
 
         if (!has_left_sibling)
-                r = rebalance2(s, info, i);
+                r = rebalance2(s, info, vt, i);
 
         else if (!has_right_sibling)
-                r = rebalance2(s, info, i - 1);
+                r = rebalance2(s, info, vt, i - 1);
 
         else
-                r = rebalance3(s, info, i - 1);
+                r = rebalance3(s, info, vt, i - 1);
 
         return r;
 }
@@ -529,7 +523,7 @@ static int remove_raw(struct shadow_spine *s, struct dm_btree_info *info,
                 if (le32_to_cpu(n->header.flags) & LEAF_NODE)
                         return do_leaf(n, key, index);
 
-                r = rebalance_children(s, info, key);
+                r = rebalance_children(s, info, vt, key);
                 if (r)
                         break;
 
@@ -550,6 +544,14 @@ static int remove_raw(struct shadow_spine *s, struct dm_btree_info *info,
         return r;
 }
 
+static struct dm_btree_value_type le64_type = {
+        .context = NULL,
+        .size = sizeof(__le64),
+        .inc = NULL,
+        .dec = NULL,
+        .equal = NULL
+};
+
 int dm_btree_remove(struct dm_btree_info *info, dm_block_t root,
                     uint64_t *keys, dm_block_t *new_root)
 {
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 7bbd28546214..2fefb9f2198e 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -667,9 +667,11 @@ static void ops_run_io(struct stripe_head *sh, struct stripe_head_state *s)
                         bi->bi_size = STRIPE_SIZE;
                         if (rrdev)
                                 set_bit(R5_DOUBLE_LOCKED, &sh->dev[i].flags);
-                        trace_block_bio_remap(bdev_get_queue(bi->bi_bdev),
-                                              bi, disk_devt(conf->mddev->gendisk),
-                                              sh->dev[i].sector);
+
+                        if (conf->mddev->gendisk)
+                                trace_block_bio_remap(bdev_get_queue(bi->bi_bdev),
+                                                      bi, disk_devt(conf->mddev->gendisk),
+                                                      sh->dev[i].sector);
                         generic_make_request(bi);
                 }
                 if (rrdev) {
@@ -700,9 +702,10 @@ static void ops_run_io(struct stripe_head *sh, struct stripe_head_state *s)
                         rbi->bi_io_vec[0].bv_len = STRIPE_SIZE;
                         rbi->bi_io_vec[0].bv_offset = 0;
                         rbi->bi_size = STRIPE_SIZE;
-                        trace_block_bio_remap(bdev_get_queue(rbi->bi_bdev),
-                                              rbi, disk_devt(conf->mddev->gendisk),
-                                              sh->dev[i].sector);
+                        if (conf->mddev->gendisk)
+                                trace_block_bio_remap(bdev_get_queue(rbi->bi_bdev),
+                                                      rbi, disk_devt(conf->mddev->gendisk),
+                                                      sh->dev[i].sector);
                         generic_make_request(rbi);
                 }
                 if (!rdev && !rrdev) {
@@ -2279,17 +2282,6 @@ schedule_reconstruction(struct stripe_head *sh, struct stripe_head_state *s,
         int level = conf->level;
 
         if (rcw) {
-                /* if we are not expanding this is a proper write request, and
-                 * there will be bios with new data to be drained into the
-                 * stripe cache
-                 */
-                if (!expand) {
-                        sh->reconstruct_state = reconstruct_state_drain_run;
-                        set_bit(STRIPE_OP_BIODRAIN, &s->ops_request);
-                } else
-                        sh->reconstruct_state = reconstruct_state_run;
-
-                set_bit(STRIPE_OP_RECONSTRUCT, &s->ops_request);
 
                 for (i = disks; i--; ) {
                         struct r5dev *dev = &sh->dev[i];
@@ -2302,6 +2294,21 @@ schedule_reconstruction(struct stripe_head *sh, struct stripe_head_state *s,
                                 s->locked++;
                         }
                 }
+                /* if we are not expanding this is a proper write request, and
+                 * there will be bios with new data to be drained into the
+                 * stripe cache
+                 */
+                if (!expand) {
+                        if (!s->locked)
+                                /* False alarm, nothing to do */
+                                return;
+                        sh->reconstruct_state = reconstruct_state_drain_run;
+                        set_bit(STRIPE_OP_BIODRAIN, &s->ops_request);
+                } else
+                        sh->reconstruct_state = reconstruct_state_run;
+
+                set_bit(STRIPE_OP_RECONSTRUCT, &s->ops_request);
+
                 if (s->locked + conf->max_degraded == disks)
                         if (!test_and_set_bit(STRIPE_FULL_WRITE, &sh->state))
                                 atomic_inc(&conf->pending_full_writes);
@@ -2310,11 +2317,6 @@ schedule_reconstruction(struct stripe_head *sh, struct stripe_head_state *s,
                 BUG_ON(!(test_bit(R5_UPTODATE, &sh->dev[pd_idx].flags) ||
                         test_bit(R5_Wantcompute, &sh->dev[pd_idx].flags)));
 
-                sh->reconstruct_state = reconstruct_state_prexor_drain_run;
-                set_bit(STRIPE_OP_PREXOR, &s->ops_request);
-                set_bit(STRIPE_OP_BIODRAIN, &s->ops_request);
-                set_bit(STRIPE_OP_RECONSTRUCT, &s->ops_request);
-
                 for (i = disks; i--; ) {
                         struct r5dev *dev = &sh->dev[i];
                         if (i == pd_idx)
@@ -2329,6 +2331,13 @@ schedule_reconstruction(struct stripe_head *sh, struct stripe_head_state *s,
                                 s->locked++;
                         }
                 }
+                if (!s->locked)
+                        /* False alarm - nothing to do */
+                        return;
+                sh->reconstruct_state = reconstruct_state_prexor_drain_run;
+                set_bit(STRIPE_OP_PREXOR, &s->ops_request);
+                set_bit(STRIPE_OP_BIODRAIN, &s->ops_request);
+                set_bit(STRIPE_OP_RECONSTRUCT, &s->ops_request);
         }
 
         /* keep the parity disk(s) locked while asynchronous operations
@@ -2563,6 +2572,8 @@ handle_failed_sync(struct r5conf *conf, struct stripe_head *sh,
         int i;
 
         clear_bit(STRIPE_SYNCING, &sh->state);
+        if (test_and_clear_bit(R5_Overlap, &sh->dev[sh->pd_idx].flags))
+                wake_up(&conf->wait_for_overlap);
         s->syncing = 0;
         s->replacing = 0;
         /* There is nothing more to do for sync/check/repair.
@@ -2736,6 +2747,7 @@ static void handle_stripe_clean_event(struct r5conf *conf,
 {
         int i;
         struct r5dev *dev;
+        int discard_pending = 0;
 
         for (i = disks; i--; )
                 if (sh->dev[i].written) {
@@ -2764,9 +2776,23 @@ static void handle_stripe_clean_event(struct r5conf *conf,
                                                 STRIPE_SECTORS,
                                          !test_bit(STRIPE_DEGRADED, &sh->state),
                                                 0);
-                        }
-                } else if (test_bit(R5_Discard, &sh->dev[i].flags))
-                        clear_bit(R5_Discard, &sh->dev[i].flags);
+                        } else if (test_bit(R5_Discard, &dev->flags))
+                                discard_pending = 1;
+                }
+        if (!discard_pending &&
+            test_bit(R5_Discard, &sh->dev[sh->pd_idx].flags)) {
+                clear_bit(R5_Discard, &sh->dev[sh->pd_idx].flags);
+                clear_bit(R5_UPTODATE, &sh->dev[sh->pd_idx].flags);
+                if (sh->qd_idx >= 0) {
+                        clear_bit(R5_Discard, &sh->dev[sh->qd_idx].flags);
+                        clear_bit(R5_UPTODATE, &sh->dev[sh->qd_idx].flags);
+                }
+                /* now that discard is done we can proceed with any sync */
+                clear_bit(STRIPE_DISCARD, &sh->state);
+                if (test_bit(STRIPE_SYNC_REQUESTED, &sh->state))
+                        set_bit(STRIPE_HANDLE, &sh->state);
+
+        }
 
         if (test_and_clear_bit(STRIPE_FULL_WRITE, &sh->state))
                 if (atomic_dec_and_test(&conf->pending_full_writes))
@@ -2825,8 +2851,10 @@ static void handle_stripe_dirtying(struct r5conf *conf,
         set_bit(STRIPE_HANDLE, &sh->state);
         if (rmw < rcw && rmw > 0) {
                 /* prefer read-modify-write, but need to get some data */
-                blk_add_trace_msg(conf->mddev->queue, "raid5 rmw %llu %d",
-                                  (unsigned long long)sh->sector, rmw);
+                if (conf->mddev->queue)
+                        blk_add_trace_msg(conf->mddev->queue,
+                                          "raid5 rmw %llu %d",
+                                          (unsigned long long)sh->sector, rmw);
                 for (i = disks; i--; ) {
                         struct r5dev *dev = &sh->dev[i];
                         if ((dev->towrite || i == sh->pd_idx) &&
@@ -2876,7 +2904,7 @@ static void handle_stripe_dirtying(struct r5conf *conf,
                                 }
                         }
                 }
-                if (rcw)
+                if (rcw && conf->mddev->queue)
                         blk_add_trace_msg(conf->mddev->queue, "raid5 rcw %llu %d %d %d",
                                           (unsigned long long)sh->sector,
                                           rcw, qread, test_bit(STRIPE_DELAYED, &sh->state));
@@ -3416,9 +3444,15 @@ static void handle_stripe(struct stripe_head *sh)
                 return;
         }
 
-        if (test_and_clear_bit(STRIPE_SYNC_REQUESTED, &sh->state)) {
-                set_bit(STRIPE_SYNCING, &sh->state);
-                clear_bit(STRIPE_INSYNC, &sh->state);
+        if (test_bit(STRIPE_SYNC_REQUESTED, &sh->state)) {
+                spin_lock(&sh->stripe_lock);
+                /* Cannot process 'sync' concurrently with 'discard' */
+                if (!test_bit(STRIPE_DISCARD, &sh->state) &&
+                    test_and_clear_bit(STRIPE_SYNC_REQUESTED, &sh->state)) {
+                        set_bit(STRIPE_SYNCING, &sh->state);
+                        clear_bit(STRIPE_INSYNC, &sh->state);
+                }
+                spin_unlock(&sh->stripe_lock);
         }
         clear_bit(STRIPE_DELAYED, &sh->state);
 
@@ -3578,6 +3612,8 @@ static void handle_stripe(struct stripe_head *sh)
             test_bit(STRIPE_INSYNC, &sh->state)) {
                 md_done_sync(conf->mddev, STRIPE_SECTORS, 1);
                 clear_bit(STRIPE_SYNCING, &sh->state);
+                if (test_and_clear_bit(R5_Overlap, &sh->dev[sh->pd_idx].flags))
+                        wake_up(&conf->wait_for_overlap);
         }
 
         /* If the failed drives are just a ReadError, then we might need
@@ -3981,9 +4017,10 @@ static int chunk_aligned_read(struct mddev *mddev, struct bio * raid_bio)
                 atomic_inc(&conf->active_aligned_reads);
                 spin_unlock_irq(&conf->device_lock);
 
-                trace_block_bio_remap(bdev_get_queue(align_bi->bi_bdev),
-                                      align_bi, disk_devt(mddev->gendisk),
-                                      raid_bio->bi_sector);
+                if (mddev->gendisk)
+                        trace_block_bio_remap(bdev_get_queue(align_bi->bi_bdev),
+                                              align_bi, disk_devt(mddev->gendisk),
+                                              raid_bio->bi_sector);
                 generic_make_request(align_bi);
                 return 1;
         } else {
@@ -4077,7 +4114,8 @@ static void raid5_unplug(struct blk_plug_cb *blk_cb, bool from_schedule)
                 }
                 spin_unlock_irq(&conf->device_lock);
         }
-        trace_block_unplug(mddev->queue, cnt, !from_schedule);
+        if (mddev->queue)
+                trace_block_unplug(mddev->queue, cnt, !from_schedule);
         kfree(cb);
 }
 
@@ -4140,6 +4178,13 @@ static void make_discard_request(struct mddev *mddev, struct bio *bi)
                 sh = get_active_stripe(conf, logical_sector, 0, 0, 0);
                 prepare_to_wait(&conf->wait_for_overlap, &w,
                                 TASK_UNINTERRUPTIBLE);
+                set_bit(R5_Overlap, &sh->dev[sh->pd_idx].flags);
+                if (test_bit(STRIPE_SYNCING, &sh->state)) {
+                        release_stripe(sh);
+                        schedule();
+                        goto again;
+                }
+                clear_bit(R5_Overlap, &sh->dev[sh->pd_idx].flags);
                 spin_lock_irq(&sh->stripe_lock);
                 for (d = 0; d < conf->raid_disks; d++) {
                         if (d == sh->pd_idx || d == sh->qd_idx)
@@ -4152,6 +4197,7 @@ static void make_discard_request(struct mddev *mddev, struct bio *bi)
                                 goto again;
                         }
                 }
+                set_bit(STRIPE_DISCARD, &sh->state);
                 finish_wait(&conf->wait_for_overlap, &w);
                 for (d = 0; d < conf->raid_disks; d++) {
                         if (d == sh->pd_idx || d == sh->qd_idx)
diff --git a/drivers/md/raid5.h b/drivers/md/raid5.h
index 18b2c4a8a1fd..b0b663b119a8 100644
--- a/drivers/md/raid5.h
+++ b/drivers/md/raid5.h
@@ -221,10 +221,6 @@ struct stripe_head {
         struct stripe_operations {
                 int                  target, target2;
                 enum sum_check_flags zero_sum_result;
-                #ifdef CONFIG_MULTICORE_RAID456
-                unsigned long        request;
-                wait_queue_head_t    wait_for_ops;
-                #endif
         } ops;
         struct r5dev {
                 /* rreq and rvec are used for the replacement device when
@@ -323,6 +319,7 @@ enum {
         STRIPE_COMPUTE_RUN,
         STRIPE_OPS_REQ_PENDING,
         STRIPE_ON_UNPLUG_LIST,
+        STRIPE_DISCARD,
 };
 
 /*
diff --git a/drivers/media/i2c/m5mols/m5mols_core.c b/drivers/media/i2c/m5mols/m5mols_core.c
index d4e7567b367c..0b899cb6cda1 100644
--- a/drivers/media/i2c/m5mols/m5mols_core.c
+++ b/drivers/media/i2c/m5mols/m5mols_core.c
@@ -724,7 +724,7 @@ static int m5mols_s_stream(struct v4l2_subdev *sd, int enable)
         if (enable) {
                 if (is_code(code, M5MOLS_RESTYPE_MONITOR))
                         ret = m5mols_start_monitor(info);
-                if (is_code(code, M5MOLS_RESTYPE_CAPTURE))
+                else if (is_code(code, M5MOLS_RESTYPE_CAPTURE))
                         ret = m5mols_start_capture(info);
                 else
                         ret = -EINVAL;
diff --git a/drivers/media/pci/bt8xx/bttv-driver.c b/drivers/media/pci/bt8xx/bttv-driver.c
index ccd18e4ee789..54579e4c740b 100644
--- a/drivers/media/pci/bt8xx/bttv-driver.c
+++ b/drivers/media/pci/bt8xx/bttv-driver.c
@@ -250,17 +250,19 @@ static u8 SRAM_Table[][60] =
    vdelay       start of active video in 2 * field lines relative to
                 trailing edge of /VRESET pulse (VDELAY register).
    sheight      height of active video in 2 * field lines.
+   extraheight  Added to sheight for cropcap.bounds.height only
    videostart0  ITU-R frame line number of the line corresponding
                 to vdelay in the first field. */
 #define CROPCAP(minhdelayx1, hdelayx1, swidth, totalwidth, sqwidth,      \
-                vdelay, sheight, videostart0)                            \
+                vdelay, sheight, extraheight, videostart0)               \
         .cropcap.bounds.left = minhdelayx1,                              \
         /* * 2 because vertically we count field lines times two, */     \
         /* e.g. 23 * 2 to 23 * 2 + 576 in PAL-BGHI defrect. */           \
         .cropcap.bounds.top = (videostart0) * 2 - (vdelay) + MIN_VDELAY, \
         /* 4 is a safety margin at the end of the line. */               \
         .cropcap.bounds.width = (totalwidth) - (minhdelayx1) - 4,        \
-        .cropcap.bounds.height = (sheight) + (vdelay) - MIN_VDELAY,      \
+        .cropcap.bounds.height = (sheight) + (extraheight) + (vdelay) -  \
+                                 MIN_VDELAY,                             \
         .cropcap.defrect.left = hdelayx1,                                \
         .cropcap.defrect.top = (videostart0) * 2,                        \
         .cropcap.defrect.width = swidth,                                 \
@@ -301,9 +303,10 @@ const struct bttv_tvnorm bttv_tvnorms[] = {
                         /* totalwidth */ 1135,
                         /* sqwidth */ 944,
                         /* vdelay */ 0x20,
-                /* bt878 (and bt848?) can capture another
-                   line below active video. */
-                        /* sheight */ (576 + 2) + 0x20 - 2,
+                        /* sheight */ 576,
+                        /* bt878 (and bt848?) can capture another
+                           line below active video. */
+                        /* extraheight */ 2,
                         /* videostart0 */ 23)
         },{
                 .v4l2_id        = V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_KR,
@@ -330,6 +333,7 @@ const struct bttv_tvnorm bttv_tvnorms[] = {
                         /* sqwidth */ 780,
                         /* vdelay */ 0x1a,
                         /* sheight */ 480,
+                        /* extraheight */ 0,
                         /* videostart0 */ 23)
         },{
                 .v4l2_id        = V4L2_STD_SECAM,
@@ -355,6 +359,7 @@ const struct bttv_tvnorm bttv_tvnorms[] = {
                         /* sqwidth */ 944,
                         /* vdelay */ 0x20,
                         /* sheight */ 576,
+                        /* extraheight */ 0,
                         /* videostart0 */ 23)
         },{
                 .v4l2_id        = V4L2_STD_PAL_Nc,
@@ -380,6 +385,7 @@ const struct bttv_tvnorm bttv_tvnorms[] = {
                         /* sqwidth */ 780,
                         /* vdelay */ 0x1a,
                         /* sheight */ 576,
+                        /* extraheight */ 0,
                         /* videostart0 */ 23)
         },{
                 .v4l2_id        = V4L2_STD_PAL_M,
@@ -405,6 +411,7 @@ const struct bttv_tvnorm bttv_tvnorms[] = {
                         /* sqwidth */ 780,
                         /* vdelay */ 0x1a,
                         /* sheight */ 480,
+                        /* extraheight */ 0,
                         /* videostart0 */ 23)
         },{
                 .v4l2_id        = V4L2_STD_PAL_N,
@@ -430,6 +437,7 @@ const struct bttv_tvnorm bttv_tvnorms[] = {
                         /* sqwidth */ 944,
                         /* vdelay */ 0x20,
                         /* sheight */ 576,
+                        /* extraheight */ 0,
                         /* videostart0 */ 23)
         },{
                 .v4l2_id        = V4L2_STD_NTSC_M_JP,
@@ -455,6 +463,7 @@ const struct bttv_tvnorm bttv_tvnorms[] = {
                         /* sqwidth */ 780,
                         /* vdelay */ 0x16,
                         /* sheight */ 480,
+                        /* extraheight */ 0,
                         /* videostart0 */ 23)
         },{
                 /* that one hopefully works with the strange timing
@@ -484,6 +493,7 @@ const struct bttv_tvnorm bttv_tvnorms[] = {
                         /* sqwidth */ 944,
                         /* vdelay */ 0x1a,
                         /* sheight */ 480,
+                        /* extraheight */ 0,
                         /* videostart0 */ 23)
         }
 };
diff --git a/drivers/media/platform/exynos-gsc/gsc-core.c b/drivers/media/platform/exynos-gsc/gsc-core.c
index 82d9f6ac12f3..33b5ffc8d66d 100644
--- a/drivers/media/platform/exynos-gsc/gsc-core.c
+++ b/drivers/media/platform/exynos-gsc/gsc-core.c
@@ -1054,16 +1054,18 @@ static int gsc_m2m_suspend(struct gsc_dev *gsc)
 
 static int gsc_m2m_resume(struct gsc_dev *gsc)
 {
+        struct gsc_ctx *ctx;
         unsigned long flags;
 
         spin_lock_irqsave(&gsc->slock, flags);
         /* Clear for full H/W setup in first run after resume */
+        ctx = gsc->m2m.ctx;
         gsc->m2m.ctx = NULL;
         spin_unlock_irqrestore(&gsc->slock, flags);
 
         if (test_and_clear_bit(ST_M2M_SUSPENDED, &gsc->state))
-                gsc_m2m_job_finish(gsc->m2m.ctx,
-                                    VB2_BUF_STATE_ERROR);
+                gsc_m2m_job_finish(ctx, VB2_BUF_STATE_ERROR);
+
         return 0;
 }
 
@@ -1204,7 +1206,7 @@ static int gsc_resume(struct device *dev)
         /* Do not resume if the device was idle before system suspend */
         spin_lock_irqsave(&gsc->slock, flags);
         if (!test_and_clear_bit(ST_SUSPEND, &gsc->state) ||
-            !gsc_m2m_active(gsc)) {
+            !gsc_m2m_opened(gsc)) {
                 spin_unlock_irqrestore(&gsc->slock, flags);
                 return 0;
         }
diff --git a/drivers/media/platform/s5p-fimc/fimc-core.c b/drivers/media/platform/s5p-fimc/fimc-core.c
index e3916bde45cf..0f513dd19f86 100644
--- a/drivers/media/platform/s5p-fimc/fimc-core.c
+++ b/drivers/media/platform/s5p-fimc/fimc-core.c
@@ -850,16 +850,18 @@ static int fimc_m2m_suspend(struct fimc_dev *fimc)
 
 static int fimc_m2m_resume(struct fimc_dev *fimc)
 {
+        struct fimc_ctx *ctx;
         unsigned long flags;
 
         spin_lock_irqsave(&fimc->slock, flags);
         /* Clear for full H/W setup in first run after resume */
+        ctx = fimc->m2m.ctx;
         fimc->m2m.ctx = NULL;
         spin_unlock_irqrestore(&fimc->slock, flags);
 
         if (test_and_clear_bit(ST_M2M_SUSPENDED, &fimc->state))
-                fimc_m2m_job_finish(fimc->m2m.ctx,
-                                    VB2_BUF_STATE_ERROR);
+                fimc_m2m_job_finish(ctx, VB2_BUF_STATE_ERROR);
+
         return 0;
 }
 
diff --git a/drivers/media/platform/s5p-fimc/fimc-lite-reg.c b/drivers/media/platform/s5p-fimc/fimc-lite-reg.c
index f0af0754a7b4..ac9663ce2a49 100644
--- a/drivers/media/platform/s5p-fimc/fimc-lite-reg.c
+++ b/drivers/media/platform/s5p-fimc/fimc-lite-reg.c
@@ -128,10 +128,10 @@ static const u32 src_pixfmt_map[8][3] = {
 void flite_hw_set_source_format(struct fimc_lite *dev, struct flite_frame *f)
 {
         enum v4l2_mbus_pixelcode pixelcode = dev->fmt->mbus_code;
-        unsigned int i = ARRAY_SIZE(src_pixfmt_map);
+        int i = ARRAY_SIZE(src_pixfmt_map);
         u32 cfg;
 
-        while (i-- >= 0) {
+        while (--i >= 0) {
                 if (src_pixfmt_map[i][0] == pixelcode)
                         break;
         }
@@ -224,9 +224,9 @@ static void flite_hw_set_out_order(struct fimc_lite *dev, struct flite_frame *f)
                 { V4L2_MBUS_FMT_VYUY8_2X8, FLITE_REG_CIODMAFMT_CRYCBY },
         };
         u32 cfg = readl(dev->regs + FLITE_REG_CIODMAFMT);
-        unsigned int i = ARRAY_SIZE(pixcode);
+        int i = ARRAY_SIZE(pixcode);
 
-        while (i-- >= 0)
+        while (--i >= 0)
                 if (pixcode[i][0] == dev->fmt->mbus_code)
                         break;
         cfg &= ~FLITE_REG_CIODMAFMT_YCBCR_ORDER_MASK;
diff --git a/drivers/media/platform/s5p-fimc/fimc-lite.c b/drivers/media/platform/s5p-fimc/fimc-lite.c
index bfc4206935c8..bbc35de7db27 100644
--- a/drivers/media/platform/s5p-fimc/fimc-lite.c
+++ b/drivers/media/platform/s5p-fimc/fimc-lite.c
@@ -1408,6 +1408,7 @@ static const struct v4l2_ctrl_config fimc_lite_ctrl = {
         .id     = V4L2_CTRL_CLASS_USER | 0x1001,
         .type   = V4L2_CTRL_TYPE_BOOLEAN,
         .name   = "Test Pattern 640x480",
+        .step   = 1,
 };
 
 static int fimc_lite_create_capture_subdev(struct fimc_lite *fimc)
diff --git a/drivers/media/platform/s5p-fimc/fimc-mdevice.c b/drivers/media/platform/s5p-fimc/fimc-mdevice.c
index a17fcb2d5d41..cd38d708ab58 100644
--- a/drivers/media/platform/s5p-fimc/fimc-mdevice.c
+++ b/drivers/media/platform/s5p-fimc/fimc-mdevice.c
@@ -827,7 +827,7 @@ static int fimc_md_link_notify(struct media_pad *source,
         struct fimc_pipeline *pipeline;
         struct v4l2_subdev *sd;
         struct mutex *lock;
-        int ret = 0;
+        int i, ret = 0;
         int ref_count;
 
         if (media_entity_type(sink->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
@@ -854,29 +854,28 @@ static int fimc_md_link_notify(struct media_pad *source,
                 return 0;
         }
 
+        mutex_lock(lock);
+        ref_count = fimc ? fimc->vid_cap.refcnt : fimc_lite->ref_count;
+
         if (!(flags & MEDIA_LNK_FL_ENABLED)) {
-                int i;
-                mutex_lock(lock);
-                ret = __fimc_pipeline_close(pipeline);
+                if (ref_count > 0) {
+                        ret = __fimc_pipeline_close(pipeline);
+                        if (!ret && fimc)
+                                fimc_ctrls_delete(fimc->vid_cap.ctx);
+                }
                 for (i = 0; i < IDX_MAX; i++)
                         pipeline->subdevs[i] = NULL;
-                if (fimc)
-                        fimc_ctrls_delete(fimc->vid_cap.ctx);
-                mutex_unlock(lock);
-                return ret;
+        } else if (ref_count > 0) {
+                /*
+                 * Link activation. Enable power of pipeline elements only if
+                 * the pipeline is already in use, i.e. its video node is open.
+                 * Recreate the controls destroyed during the link deactivation.
+                 */
+                ret = __fimc_pipeline_open(pipeline,
+                                           source->entity, true);
+                if (!ret && fimc)
+                        ret = fimc_capture_ctrls_create(fimc);
         }
-        /*
-         * Link activation. Enable power of pipeline elements only if the
-         * pipeline is already in use, i.e. its video node is opened.
-         * Recreate the controls destroyed during the link deactivation.
-         */
-        mutex_lock(lock);
-
-        ref_count = fimc ? fimc->vid_cap.refcnt : fimc_lite->ref_count;
-        if (ref_count > 0)
-                ret = __fimc_pipeline_open(pipeline, source->entity, true);
-        if (!ret && fimc)
-                ret = fimc_capture_ctrls_create(fimc);
 
         mutex_unlock(lock);
         return ret ? -EPIPE : ret;
diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc.c b/drivers/media/platform/s5p-mfc/s5p_mfc.c
index e84703c314ce..1cb6d57987c6 100644
--- a/drivers/media/platform/s5p-mfc/s5p_mfc.c
+++ b/drivers/media/platform/s5p-mfc/s5p_mfc.c
@@ -276,7 +276,7 @@ static void s5p_mfc_handle_frame_new(struct s5p_mfc_ctx *ctx, unsigned int err)
         unsigned int frame_type;
 
         dspl_y_addr = s5p_mfc_hw_call(dev->mfc_ops, get_dspl_y_adr, dev);
-        frame_type = s5p_mfc_hw_call(dev->mfc_ops, get_dec_frame_type, dev);
+        frame_type = s5p_mfc_hw_call(dev->mfc_ops, get_disp_frame_type, ctx);
 
         /* If frame is same as previous then skip and do not dequeue */
         if (frame_type == S5P_FIMV_DECODE_FRAME_SKIPPED) {
diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c b/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c
index 2356fd52a169..4f6b553c4b2d 100644
--- a/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c
+++ b/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c
@@ -232,6 +232,7 @@ static struct mfc_control controls[] = {
                 .minimum = 0,
                 .maximum = 1,
                 .default_value = 0,
+                .step = 1,
                 .menu_skip_mask = 0,
         },
         {
diff --git a/drivers/media/rc/Kconfig b/drivers/media/rc/Kconfig
index 19f3563c61da..5a79c333d45e 100644
--- a/drivers/media/rc/Kconfig
+++ b/drivers/media/rc/Kconfig
@@ -291,7 +291,7 @@ config IR_TTUSBIR
 
 config IR_RX51
         tristate "Nokia N900 IR transmitter diode"
-        depends on OMAP_DM_TIMER && LIRC && !ARCH_MULTIPLATFORM
+        depends on OMAP_DM_TIMER && ARCH_OMAP2PLUS && LIRC && !ARCH_MULTIPLATFORM
         ---help---
            Say Y or M here if you want to enable support for the IR
            transmitter diode built in the Nokia N900 (RX51) device.
diff --git a/drivers/media/v4l2-core/Makefile b/drivers/media/v4l2-core/Makefile
index a9d355230e8e..768aaf62d5dc 100644
--- a/drivers/media/v4l2-core/Makefile
+++ b/drivers/media/v4l2-core/Makefile
@@ -10,7 +10,7 @@ ifeq ($(CONFIG_COMPAT),y)
   videodev-objs += v4l2-compat-ioctl32.o
 endif
 
-obj-$(CONFIG_VIDEO_DEV) += videodev.o
+obj-$(CONFIG_VIDEO_V4L2) += videodev.o
 obj-$(CONFIG_VIDEO_V4L2_INT_DEVICE) += v4l2-int-device.o
 obj-$(CONFIG_VIDEO_V4L2) += v4l2-common.o
 
diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c
index 45ea7185c003..642c6223fa6c 100644
--- a/drivers/misc/mei/hw-me.c
+++ b/drivers/misc/mei/hw-me.c
@@ -152,6 +152,20 @@ static void mei_me_intr_disable(struct mei_device *dev)
 }
 
 /**
+ * mei_me_hw_reset_release - release device from the reset
+ *
+ * @dev: the device structure
+ */
+static void mei_me_hw_reset_release(struct mei_device *dev)
+{
+        struct mei_me_hw *hw = to_me_hw(dev);
+        u32 hcsr = mei_hcsr_read(hw);
+
+        hcsr |= H_IG;
+        hcsr &= ~H_RST;
+        mei_hcsr_set(hw, hcsr);
+}
+/**
  * mei_me_hw_reset - resets fw via mei csr register.
  *
  * @dev: the device structure
@@ -169,18 +183,14 @@ static void mei_me_hw_reset(struct mei_device *dev, bool intr_enable)
         if (intr_enable)
                 hcsr |= H_IE;
         else
-                hcsr &= ~H_IE;
-
-        mei_hcsr_set(hw, hcsr);
-
-        hcsr = mei_hcsr_read(hw) | H_IG;
-        hcsr &= ~H_RST;
+                hcsr |= ~H_IE;
 
         mei_hcsr_set(hw, hcsr);
 
-        hcsr = mei_hcsr_read(hw);
+        if (dev->dev_state == MEI_DEV_POWER_DOWN)
+                mei_me_hw_reset_release(dev);
 
-        dev_dbg(&dev->pdev->dev, "current HCSR = 0x%08x.\n", hcsr);
+        dev_dbg(&dev->pdev->dev, "current HCSR = 0x%08x.\n", mei_hcsr_read(hw));
 }
 
 /**
@@ -466,7 +476,8 @@ irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id)
                         mutex_unlock(&dev->device_lock);
                         return IRQ_HANDLED;
                 } else {
-                        dev_dbg(&dev->pdev->dev, "FW not ready.\n");
+                        dev_dbg(&dev->pdev->dev, "Reset Completed.\n");
+                        mei_me_hw_reset_release(dev);
                         mutex_unlock(&dev->device_lock);
                         return IRQ_HANDLED;
                 }
diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c
index 6ec530168afb..356179991a2e 100644
--- a/drivers/misc/mei/init.c
+++ b/drivers/misc/mei/init.c
@@ -183,6 +183,24 @@ void mei_reset(struct mei_device *dev, int interrupts_enabled)
         mei_cl_all_write_clear(dev);
 }
 
+void mei_stop(struct mei_device *dev)
+{
+        dev_dbg(&dev->pdev->dev, "stopping the device.\n");
+
+        mutex_lock(&dev->device_lock);
+
+        cancel_delayed_work(&dev->timer_work);
+
+        mei_wd_stop(dev);
+
+        dev->dev_state = MEI_DEV_POWER_DOWN;
+        mei_reset(dev, 0);
+
+        mutex_unlock(&dev->device_lock);
+
+        flush_scheduled_work();
+}
+
 
 
 
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h
index cb80166161f0..97873812e33b 100644
--- a/drivers/misc/mei/mei_dev.h
+++ b/drivers/misc/mei/mei_dev.h
@@ -381,6 +381,7 @@ static inline unsigned long mei_secs_to_jiffies(unsigned long sec)
 void mei_device_init(struct mei_device *dev);
 void mei_reset(struct mei_device *dev, int interrupts);
 int mei_hw_init(struct mei_device *dev);
+void mei_stop(struct mei_device *dev);
 
 /*
  *  MEI interrupt functions prototype
diff --git a/drivers/misc/mei/pci-me.c b/drivers/misc/mei/pci-me.c
index b40ec0601ab0..b8b5c9c3ad03 100644
--- a/drivers/misc/mei/pci-me.c
+++ b/drivers/misc/mei/pci-me.c
@@ -247,44 +247,14 @@ static void mei_remove(struct pci_dev *pdev)
 
         hw = to_me_hw(dev);
 
-        mutex_lock(&dev->device_lock);
-
-        cancel_delayed_work(&dev->timer_work);
 
-        mei_wd_stop(dev);
+        dev_err(&pdev->dev, "stop\n");
+        mei_stop(dev);
 
         mei_pdev = NULL;
 
-        if (dev->iamthif_cl.state == MEI_FILE_CONNECTED) {
-                dev->iamthif_cl.state = MEI_FILE_DISCONNECTING;
-                mei_cl_disconnect(&dev->iamthif_cl);
-        }
-        if (dev->wd_cl.state == MEI_FILE_CONNECTED) {
-                dev->wd_cl.state = MEI_FILE_DISCONNECTING;
-                mei_cl_disconnect(&dev->wd_cl);
-        }
-
-        /* Unregistering watchdog device */
         mei_watchdog_unregister(dev);
 
-        /* remove entry if already in list */
-        dev_dbg(&pdev->dev, "list del iamthif and wd file list.\n");
-
-        if (dev->open_handle_count > 0)
-                dev->open_handle_count--;
-        mei_cl_unlink(&dev->wd_cl);
-
-        if (dev->open_handle_count > 0)
-                dev->open_handle_count--;
-        mei_cl_unlink(&dev->iamthif_cl);
-
-        dev->iamthif_current_cb = NULL;
-        dev->me_clients_num = 0;
-
-        mutex_unlock(&dev->device_lock);
-
-        flush_scheduled_work();
-
         /* disable interrupts */
         mei_disable_interrupts(dev);
 
@@ -308,28 +278,20 @@ static int mei_pci_suspend(struct device *device)
 {
         struct pci_dev *pdev = to_pci_dev(device);
         struct mei_device *dev = pci_get_drvdata(pdev);
-        int err;
 
         if (!dev)
                 return -ENODEV;
-        mutex_lock(&dev->device_lock);
 
-        cancel_delayed_work(&dev->timer_work);
+        dev_err(&pdev->dev, "suspend\n");
 
-        /* Stop watchdog if exists */
-        err = mei_wd_stop(dev);
-        /* Set new mei state */
-        if (dev->dev_state == MEI_DEV_ENABLED ||
-            dev->dev_state == MEI_DEV_RECOVERING_FROM_RESET) {
-                dev->dev_state = MEI_DEV_POWER_DOWN;
-                mei_reset(dev, 0);
-        }
-        mutex_unlock(&dev->device_lock);
+        mei_stop(dev);
+
+        mei_disable_interrupts(dev);
 
         free_irq(pdev->irq, dev);
         pci_disable_msi(pdev);
 
-        return err;
+        return 0;
 }
 
 static int mei_pci_resume(struct device *device)
diff --git a/drivers/misc/vmw_vmci/vmci_datagram.c b/drivers/misc/vmw_vmci/vmci_datagram.c
index ed5c433cd493..f3cdd904fe4d 100644
--- a/drivers/misc/vmw_vmci/vmci_datagram.c
+++ b/drivers/misc/vmw_vmci/vmci_datagram.c
@@ -42,9 +42,11 @@ struct datagram_entry {
 
 struct delayed_datagram_info {
         struct datagram_entry *entry;
-        struct vmci_datagram msg;
         struct work_struct work;
         bool in_dg_host_queue;
+        /* msg and msg_payload must be together. */
+        struct vmci_datagram msg;
+        u8 msg_payload[];
 };
 
 /* Number of in-flight host->host datagrams */
diff --git a/drivers/mtd/bcm47xxpart.c b/drivers/mtd/bcm47xxpart.c
index 63feb75cc8e0..9279a9174f84 100644
--- a/drivers/mtd/bcm47xxpart.c
+++ b/drivers/mtd/bcm47xxpart.c
@@ -19,6 +19,12 @@
 /* 10 parts were found on sflash on Netgear WNDR4500 */
 #define BCM47XXPART_MAX_PARTS           12
 
+/*
+ * Amount of bytes we read when analyzing each block of flash memory.
+ * Set it big enough to allow detecting partition and reading important data.
+ */
+#define BCM47XXPART_BYTES_TO_READ       0x404
+
 /* Magics */
 #define BOARD_DATA_MAGIC                0x5246504D      /* MPFR */
 #define POT_MAGIC1                      0x54544f50      /* POTT */
@@ -57,17 +63,15 @@ static int bcm47xxpart_parse(struct mtd_info *master,
         struct trx_header *trx;
         int trx_part = -1;
         int last_trx_part = -1;
-        int max_bytes_to_read = 0x8004;
+        int possible_nvram_sizes[] = { 0x8000, 0xF000, 0x10000, };
 
         if (blocksize <= 0x10000)
                 blocksize = 0x10000;
-        if (blocksize == 0x20000)
-                max_bytes_to_read = 0x18004;
 
         /* Alloc */
         parts = kzalloc(sizeof(struct mtd_partition) * BCM47XXPART_MAX_PARTS,
                         GFP_KERNEL);
-        buf = kzalloc(max_bytes_to_read, GFP_KERNEL);
+        buf = kzalloc(BCM47XXPART_BYTES_TO_READ, GFP_KERNEL);
 
         /* Parse block by block looking for magics */
         for (offset = 0; offset <= master->size - blocksize;
@@ -82,7 +86,7 @@ static int bcm47xxpart_parse(struct mtd_info *master,
                 }
 
                 /* Read beginning of the block */
-                if (mtd_read(master, offset, max_bytes_to_read,
+                if (mtd_read(master, offset, BCM47XXPART_BYTES_TO_READ,
                              &bytes_read, (uint8_t *)buf) < 0) {
                         pr_err("mtd_read error while parsing (offset: 0x%X)!\n",
                                offset);
@@ -96,20 +100,6 @@ static int bcm47xxpart_parse(struct mtd_info *master,
                         continue;
                 }
 
-                /* Standard NVRAM */
-                if (buf[0x000 / 4] == NVRAM_HEADER ||
-                    buf[0x1000 / 4] == NVRAM_HEADER ||
-                    buf[0x8000 / 4] == NVRAM_HEADER ||
-                    (blocksize == 0x20000 && (
-                      buf[0x10000 / 4] == NVRAM_HEADER ||
-                      buf[0x11000 / 4] == NVRAM_HEADER ||
-                      buf[0x18000 / 4] == NVRAM_HEADER))) {
-                        bcm47xxpart_add_part(&parts[curr_part++], "nvram",
-                                             offset, 0);
-                        offset = rounddown(offset, blocksize);
-                        continue;
-                }
-
                 /*
                  * board_data starts with board_id which differs across boards,
                  * but we can use 'MPFR' (hopefully) magic at 0x100
@@ -178,6 +168,30 @@ static int bcm47xxpart_parse(struct mtd_info *master,
                         continue;
                 }
         }
+
+        /* Look for NVRAM at the end of the last block. */
+        for (i = 0; i < ARRAY_SIZE(possible_nvram_sizes); i++) {
+                if (curr_part > BCM47XXPART_MAX_PARTS) {
+                        pr_warn("Reached maximum number of partitions, scanning stopped!\n");
+                        break;
+                }
+
+                offset = master->size - possible_nvram_sizes[i];
+                if (mtd_read(master, offset, 0x4, &bytes_read,
+                             (uint8_t *)buf) < 0) {
+                        pr_err("mtd_read error while reading at offset 0x%X!\n",
+                               offset);
+                        continue;
+                }
+
+                /* Standard NVRAM */
+                if (buf[0] == NVRAM_HEADER) {
+                        bcm47xxpart_add_part(&parts[curr_part++], "nvram",
+                                             master->size - blocksize, 0);
+                        break;
+                }
+        }
+
         kfree(buf);
 
         /*
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 43214151b882..42c63927609d 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -1523,6 +1523,14 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from,
                                         oobreadlen -= toread;
                                 }
                         }
+
+                        if (chip->options & NAND_NEED_READRDY) {
+                                /* Apply delay or wait for ready/busy pin */
+                                if (!chip->dev_ready)
+                                        udelay(chip->chip_delay);
+                                else
+                                        nand_wait_ready(mtd);
+                        }
                 } else {
                         memcpy(buf, chip->buffers->databuf + col, bytes);
                         buf += bytes;
@@ -1787,6 +1795,14 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from,
                 len = min(len, readlen);
                 buf = nand_transfer_oob(chip, buf, ops, len);
 
+                if (chip->options & NAND_NEED_READRDY) {
+                        /* Apply delay or wait for ready/busy pin */
+                        if (!chip->dev_ready)
+                                udelay(chip->chip_delay);
+                        else
+                                nand_wait_ready(mtd);
+                }
+
                 readlen -= len;
                 if (!readlen)
                         break;
diff --git a/drivers/mtd/nand/nand_ids.c b/drivers/mtd/nand/nand_ids.c
index e3aa2748a6e7..9c612388e5de 100644
--- a/drivers/mtd/nand/nand_ids.c
+++ b/drivers/mtd/nand/nand_ids.c
@@ -22,49 +22,51 @@
 *       512     512 Byte page size
 */
 struct nand_flash_dev nand_flash_ids[] = {
+#define SP_OPTIONS NAND_NEED_READRDY
+#define SP_OPTIONS16 (SP_OPTIONS | NAND_BUSWIDTH_16)
 
 #ifdef CONFIG_MTD_NAND_MUSEUM_IDS
-        {"NAND 1MiB 5V 8-bit",          0x6e, 256, 1, 0x1000, 0},
-        {"NAND 2MiB 5V 8-bit",          0x64, 256, 2, 0x1000, 0},
-        {"NAND 4MiB 5V 8-bit",          0x6b, 512, 4, 0x2000, 0},
-        {"NAND 1MiB 3,3V 8-bit",        0xe8, 256, 1, 0x1000, 0},
-        {"NAND 1MiB 3,3V 8-bit",        0xec, 256, 1, 0x1000, 0},
-        {"NAND 2MiB 3,3V 8-bit",        0xea, 256, 2, 0x1000, 0},
-        {"NAND 4MiB 3,3V 8-bit",        0xd5, 512, 4, 0x2000, 0},
-        {"NAND 4MiB 3,3V 8-bit",        0xe3, 512, 4, 0x2000, 0},
-        {"NAND 4MiB 3,3V 8-bit",        0xe5, 512, 4, 0x2000, 0},
-        {"NAND 8MiB 3,3V 8-bit",        0xd6, 512, 8, 0x2000, 0},
-
-        {"NAND 8MiB 1,8V 8-bit",        0x39, 512, 8, 0x2000, 0},
-        {"NAND 8MiB 3,3V 8-bit",        0xe6, 512, 8, 0x2000, 0},
-        {"NAND 8MiB 1,8V 16-bit",       0x49, 512, 8, 0x2000, NAND_BUSWIDTH_16},
-        {"NAND 8MiB 3,3V 16-bit",       0x59, 512, 8, 0x2000, NAND_BUSWIDTH_16},
+        {"NAND 1MiB 5V 8-bit",          0x6e, 256, 1, 0x1000, SP_OPTIONS},
+        {"NAND 2MiB 5V 8-bit",          0x64, 256, 2, 0x1000, SP_OPTIONS},
+        {"NAND 4MiB 5V 8-bit",          0x6b, 512, 4, 0x2000, SP_OPTIONS},
+        {"NAND 1MiB 3,3V 8-bit",        0xe8, 256, 1, 0x1000, SP_OPTIONS},
+        {"NAND 1MiB 3,3V 8-bit",        0xec, 256, 1, 0x1000, SP_OPTIONS},
+        {"NAND 2MiB 3,3V 8-bit",        0xea, 256, 2, 0x1000, SP_OPTIONS},
+        {"NAND 4MiB 3,3V 8-bit",        0xd5, 512, 4, 0x2000, SP_OPTIONS},
+        {"NAND 4MiB 3,3V 8-bit",        0xe3, 512, 4, 0x2000, SP_OPTIONS},
+        {"NAND 4MiB 3,3V 8-bit",        0xe5, 512, 4, 0x2000, SP_OPTIONS},
+        {"NAND 8MiB 3,3V 8-bit",        0xd6, 512, 8, 0x2000, SP_OPTIONS},
+
+        {"NAND 8MiB 1,8V 8-bit",        0x39, 512, 8, 0x2000, SP_OPTIONS},
+        {"NAND 8MiB 3,3V 8-bit",        0xe6, 512, 8, 0x2000, SP_OPTIONS},
+        {"NAND 8MiB 1,8V 16-bit",       0x49, 512, 8, 0x2000, SP_OPTIONS16},
+        {"NAND 8MiB 3,3V 16-bit",       0x59, 512, 8, 0x2000, SP_OPTIONS16},
 #endif
 
-        {"NAND 16MiB 1,8V 8-bit",       0x33, 512, 16, 0x4000, 0},
-        {"NAND 16MiB 3,3V 8-bit",       0x73, 512, 16, 0x4000, 0},
-        {"NAND 16MiB 1,8V 16-bit",      0x43, 512, 16, 0x4000, NAND_BUSWIDTH_16},
-        {"NAND 16MiB 3,3V 16-bit",      0x53, 512, 16, 0x4000, NAND_BUSWIDTH_16},
-
-        {"NAND 32MiB 1,8V 8-bit",       0x35, 512, 32, 0x4000, 0},
-        {"NAND 32MiB 3,3V 8-bit",       0x75, 512, 32, 0x4000, 0},
-        {"NAND 32MiB 1,8V 16-bit",      0x45, 512, 32, 0x4000, NAND_BUSWIDTH_16},
-        {"NAND 32MiB 3,3V 16-bit",      0x55, 512, 32, 0x4000, NAND_BUSWIDTH_16},
-
-        {"NAND 64MiB 1,8V 8-bit",       0x36, 512, 64, 0x4000, 0},
-        {"NAND 64MiB 3,3V 8-bit",       0x76, 512, 64, 0x4000, 0},
-        {"NAND 64MiB 1,8V 16-bit",      0x46, 512, 64, 0x4000, NAND_BUSWIDTH_16},
-        {"NAND 64MiB 3,3V 16-bit",      0x56, 512, 64, 0x4000, NAND_BUSWIDTH_16},
-
-        {"NAND 128MiB 1,8V 8-bit",      0x78, 512, 128, 0x4000, 0},
-        {"NAND 128MiB 1,8V 8-bit",      0x39, 512, 128, 0x4000, 0},
-        {"NAND 128MiB 3,3V 8-bit",      0x79, 512, 128, 0x4000, 0},
-        {"NAND 128MiB 1,8V 16-bit",     0x72, 512, 128, 0x4000, NAND_BUSWIDTH_16},
-        {"NAND 128MiB 1,8V 16-bit",     0x49, 512, 128, 0x4000, NAND_BUSWIDTH_16},
-        {"NAND 128MiB 3,3V 16-bit",     0x74, 512, 128, 0x4000, NAND_BUSWIDTH_16},
-        {"NAND 128MiB 3,3V 16-bit",     0x59, 512, 128, 0x4000, NAND_BUSWIDTH_16},
-
-        {"NAND 256MiB 3,3V 8-bit",      0x71, 512, 256, 0x4000, 0},
+        {"NAND 16MiB 1,8V 8-bit",       0x33, 512, 16, 0x4000, SP_OPTIONS},
+        {"NAND 16MiB 3,3V 8-bit",       0x73, 512, 16, 0x4000, SP_OPTIONS},
+        {"NAND 16MiB 1,8V 16-bit",      0x43, 512, 16, 0x4000, SP_OPTIONS16},
+        {"NAND 16MiB 3,3V 16-bit",      0x53, 512, 16, 0x4000, SP_OPTIONS16},
+
+        {"NAND 32MiB 1,8V 8-bit",       0x35, 512, 32, 0x4000, SP_OPTIONS},
+        {"NAND 32MiB 3,3V 8-bit",       0x75, 512, 32, 0x4000, SP_OPTIONS},
+        {"NAND 32MiB 1,8V 16-bit",      0x45, 512, 32, 0x4000, SP_OPTIONS16},
+        {"NAND 32MiB 3,3V 16-bit",      0x55, 512, 32, 0x4000, SP_OPTIONS16},
+
+        {"NAND 64MiB 1,8V 8-bit",       0x36, 512, 64, 0x4000, SP_OPTIONS},
+        {"NAND 64MiB 3,3V 8-bit",       0x76, 512, 64, 0x4000, SP_OPTIONS},
+        {"NAND 64MiB 1,8V 16-bit",      0x46, 512, 64, 0x4000, SP_OPTIONS16},
+        {"NAND 64MiB 3,3V 16-bit",      0x56, 512, 64, 0x4000, SP_OPTIONS16},
+
+        {"NAND 128MiB 1,8V 8-bit",      0x78, 512, 128, 0x4000, SP_OPTIONS},
+        {"NAND 128MiB 1,8V 8-bit",      0x39, 512, 128, 0x4000, SP_OPTIONS},
+        {"NAND 128MiB 3,3V 8-bit",      0x79, 512, 128, 0x4000, SP_OPTIONS},
+        {"NAND 128MiB 1,8V 16-bit",     0x72, 512, 128, 0x4000, SP_OPTIONS16},
+        {"NAND 128MiB 1,8V 16-bit",     0x49, 512, 128, 0x4000, SP_OPTIONS16},
+        {"NAND 128MiB 3,3V 16-bit",     0x74, 512, 128, 0x4000, SP_OPTIONS16},
+        {"NAND 128MiB 3,3V 16-bit",     0x59, 512, 128, 0x4000, SP_OPTIONS16},
+
+        {"NAND 256MiB 3,3V 8-bit",      0x71, 512, 256, 0x4000, SP_OPTIONS},
 
         /*
          * These are the new chips with large page size. The pagesize and the
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 8b4e96e01d6c..6bbd90e1123c 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -1746,6 +1746,8 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
 
         bond_compute_features(bond);
 
+        bond_update_speed_duplex(new_slave);
+
         read_lock(&bond->lock);
 
         new_slave->last_arp_rx = jiffies -
@@ -1798,8 +1800,6 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev)
                 new_slave->link == BOND_LINK_DOWN ? "DOWN" :
                         (new_slave->link == BOND_LINK_UP ? "UP" : "BACK"));
 
-        bond_update_speed_duplex(new_slave);
-
         if (USES_PRIMARY(bond->params.mode) && bond->params.primary[0]) {
                 /* if there is a primary slave, remember it */
                 if (strcmp(bond->params.primary, new_slave->dev->name) == 0) {
@@ -2374,8 +2374,6 @@ static void bond_miimon_commit(struct bonding *bond)
                                 bond_set_backup_slave(slave);
                         }
 
-                        bond_update_speed_duplex(slave);
-
                         pr_info("%s: link status definitely up for interface %s, %u Mbps %s duplex.\n",
                                 bond->dev->name, slave->dev->name,
                                 slave->speed, slave->duplex ? "full" : "half");
diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c
index 1c9e09fbdff8..db103e03ba05 100644
--- a/drivers/net/bonding/bond_sysfs.c
+++ b/drivers/net/bonding/bond_sysfs.c
@@ -183,6 +183,11 @@ int bond_create_slave_symlinks(struct net_device *master,
         sprintf(linkname, "slave_%s", slave->name);
         ret = sysfs_create_link(&(master->dev.kobj), &(slave->dev.kobj),
                                 linkname);
+
+        /* free the master link created earlier in case of error */
+        if (ret)
+                sysfs_remove_link(&(slave->dev.kobj), "master");
+
         return ret;
 
 }
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
index a923bc4d5a1f..4046f97378c2 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
@@ -2760,6 +2760,7 @@ load_error2:
         bp->port.pmf = 0;
 load_error1:
         bnx2x_napi_disable(bp);
+        bnx2x_del_all_napi(bp);
 
         /* clear pf_load status, as it was already set */
         if (IS_PF(bp))
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_dcb.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_dcb.c
index 568205436a15..91ecd6a00d05 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_dcb.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_dcb.c
@@ -2139,12 +2139,12 @@ static u8 bnx2x_dcbnl_get_cap(struct net_device *netdev, int capid, u8 *cap)
                         break;
                 default:
                         BNX2X_ERR("Non valid capability ID\n");
-                        rval = -EINVAL;
+                        rval = 1;
                         break;
                 }
         } else {
                 DP(BNX2X_MSG_DCB, "DCB disabled\n");
-                rval = -EINVAL;
+                rval = 1;
         }
 
         DP(BNX2X_MSG_DCB, "capid %d:%x\n", capid, *cap);
@@ -2170,12 +2170,12 @@ static int bnx2x_dcbnl_get_numtcs(struct net_device *netdev, int tcid, u8 *num)
                         break;
                 default:
                         BNX2X_ERR("Non valid TC-ID\n");
-                        rval = -EINVAL;
+                        rval = 1;
                         break;
                 }
         } else {
                 DP(BNX2X_MSG_DCB, "DCB disabled\n");
-                rval = -EINVAL;
+                rval = 1;
         }
 
         return rval;
@@ -2188,7 +2188,7 @@ static int bnx2x_dcbnl_set_numtcs(struct net_device *netdev, int tcid, u8 num)
         return -EINVAL;
 }
 
-static u8  bnx2x_dcbnl_get_pfc_state(struct net_device *netdev)
+static u8 bnx2x_dcbnl_get_pfc_state(struct net_device *netdev)
 {
         struct bnx2x *bp = netdev_priv(netdev);
         DP(BNX2X_MSG_DCB, "state = %d\n", bp->dcbx_local_feat.pfc.enabled);
@@ -2390,12 +2390,12 @@ static u8 bnx2x_dcbnl_get_featcfg(struct net_device *netdev, int featid,
                         break;
                 default:
                         BNX2X_ERR("Non valid featrue-ID\n");
-                        rval = -EINVAL;
+                        rval = 1;
                         break;
                 }
         } else {
                 DP(BNX2X_MSG_DCB, "DCB disabled\n");
-                rval = -EINVAL;
+                rval = 1;
         }
 
         return rval;
@@ -2431,12 +2431,12 @@ static u8 bnx2x_dcbnl_set_featcfg(struct net_device *netdev, int featid,
                         break;
                 default:
                         BNX2X_ERR("Non valid featrue-ID\n");
-                        rval = -EINVAL;
+                        rval = 1;
                         break;
                 }
         } else {
                 DP(BNX2X_MSG_DCB, "dcbnl call not valid\n");
-                rval = -EINVAL;
+                rval = 1;
         }
 
         return rval;
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_stats.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_stats.h
index 364e37ecbc5c..198f6f1c9ad5 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_stats.h
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_stats.h
@@ -459,8 +459,9 @@ struct bnx2x_fw_port_stats_old {
 
 #define UPDATE_QSTAT(s, t) \
         do { \
-                qstats->t##_hi = qstats_old->t##_hi + le32_to_cpu(s.hi); \
                 qstats->t##_lo = qstats_old->t##_lo + le32_to_cpu(s.lo); \
+                qstats->t##_hi = qstats_old->t##_hi + le32_to_cpu(s.hi) \
+                        + ((qstats->t##_lo < qstats_old->t##_lo) ? 1 : 0); \
         } while (0)
 
 #define UPDATE_QSTAT_OLD(f) \
diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c
index 93729f942358..67d2663b3974 100644
--- a/drivers/net/ethernet/broadcom/tg3.c
+++ b/drivers/net/ethernet/broadcom/tg3.c
@@ -4130,6 +4130,14 @@ static void tg3_phy_copper_begin(struct tg3 *tp)
                 tp->link_config.active_speed = tp->link_config.speed;
                 tp->link_config.active_duplex = tp->link_config.duplex;
 
+                if (tg3_asic_rev(tp) == ASIC_REV_5714) {
+                        /* With autoneg disabled, 5715 only links up when the
+                         * advertisement register has the configured speed
+                         * enabled.
+                         */
+                        tg3_writephy(tp, MII_ADVERTISE, ADVERTISE_ALL);
+                }
+
                 bmcr = 0;
                 switch (tp->link_config.speed) {
                 default:
diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
index 4ce62031f62f..8049268ce0f2 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
@@ -497,8 +497,9 @@ int t4_memory_write(struct adapter *adap, int mtype, u32 addr, u32 len,
 }
 
 #define EEPROM_STAT_ADDR   0x7bfc
-#define VPD_BASE           0
 #define VPD_LEN            512
+#define VPD_BASE           0x400
+#define VPD_BASE_OLD       0
 
 /**
  *      t4_seeprom_wp - enable/disable EEPROM write protection
@@ -524,7 +525,7 @@ int t4_seeprom_wp(struct adapter *adapter, bool enable)
 int get_vpd_params(struct adapter *adapter, struct vpd_params *p)
 {
         u32 cclk_param, cclk_val;
-        int i, ret;
+        int i, ret, addr;
         int ec, sn;
         u8 *vpd, csum;
         unsigned int vpdr_len, kw_offset, id_len;
@@ -533,7 +534,12 @@ int get_vpd_params(struct adapter *adapter, struct vpd_params *p)
         if (!vpd)
                 return -ENOMEM;
 
-        ret = pci_read_vpd(adapter->pdev, VPD_BASE, VPD_LEN, vpd);
+        ret = pci_read_vpd(adapter->pdev, VPD_BASE, sizeof(u32), vpd);
+        if (ret < 0)
+                goto out;
+        addr = *vpd == 0x82 ? VPD_BASE : VPD_BASE_OLD;
+
+        ret = pci_read_vpd(adapter->pdev, addr, VPD_LEN, vpd);
         if (ret < 0)
                 goto out;
 
diff --git a/drivers/net/ethernet/dec/tulip/Kconfig b/drivers/net/ethernet/dec/tulip/Kconfig
index 0c37fb2cc867..1df33c799c00 100644
--- a/drivers/net/ethernet/dec/tulip/Kconfig
+++ b/drivers/net/ethernet/dec/tulip/Kconfig
@@ -108,6 +108,7 @@ config TULIP_DM910X
 config DE4X5
         tristate "Generic DECchip & DIGITAL EtherWORKS PCI/EISA"
         depends on (PCI || EISA)
+        depends on VIRT_TO_BUS || ALPHA || PPC || SPARC
         select CRC32
         ---help---
           This is support for the DIGITAL series of PCI/EISA Ethernet cards.
diff --git a/drivers/net/ethernet/freescale/fec.c b/drivers/net/ethernet/freescale/fec.c
index 069a155d16ed..911d0253dbb2 100644
--- a/drivers/net/ethernet/freescale/fec.c
+++ b/drivers/net/ethernet/freescale/fec.c
@@ -934,24 +934,28 @@ static void fec_enet_adjust_link(struct net_device *ndev)
                 goto spin_unlock;
         }
 
-        /* Duplex link change */
         if (phy_dev->link) {
-                if (fep->full_duplex != phy_dev->duplex) {
-                        fec_restart(ndev, phy_dev->duplex);
-                        /* prevent unnecessary second fec_restart() below */
+                if (!fep->link) {
                         fep->link = phy_dev->link;
                         status_change = 1;
                 }
-        }
 
-        /* Link on or off change */
-        if (phy_dev->link != fep->link) {
-                fep->link = phy_dev->link;
-                if (phy_dev->link)
+                if (fep->full_duplex != phy_dev->duplex)
+                        status_change = 1;
+
+                if (phy_dev->speed != fep->speed) {
+                        fep->speed = phy_dev->speed;
+                        status_change = 1;
+                }
+
+                /* if any of the above changed restart the FEC */
+                if (status_change)
                         fec_restart(ndev, phy_dev->duplex);
-                else
+        } else {
+                if (fep->link) {
                         fec_stop(ndev);
-                status_change = 1;
+                        status_change = 1;
+                }
         }
 
 spin_unlock:
@@ -1328,7 +1332,7 @@ static int fec_enet_ioctl(struct net_device *ndev, struct ifreq *rq, int cmd)
 static void fec_enet_free_buffers(struct net_device *ndev)
 {
         struct fec_enet_private *fep = netdev_priv(ndev);
-        int i;
+        unsigned int i;
         struct sk_buff *skb;
         struct bufdesc  *bdp;
 
@@ -1352,7 +1356,7 @@ static void fec_enet_free_buffers(struct net_device *ndev)
 static int fec_enet_alloc_buffers(struct net_device *ndev)
 {
         struct fec_enet_private *fep = netdev_priv(ndev);
-        int i;
+        unsigned int i;
         struct sk_buff *skb;
         struct bufdesc  *bdp;
 
@@ -1437,6 +1441,7 @@ fec_enet_close(struct net_device *ndev)
         struct fec_enet_private *fep = netdev_priv(ndev);
 
         /* Don't know what to do yet. */
+        napi_disable(&fep->napi);
         fep->opened = 0;
         netif_stop_queue(ndev);
         fec_stop(ndev);
@@ -1593,7 +1598,7 @@ static int fec_enet_init(struct net_device *ndev)
         struct fec_enet_private *fep = netdev_priv(ndev);
         struct bufdesc *cbd_base;
         struct bufdesc *bdp;
-        int i;
+        unsigned int i;
 
         /* Allocate memory for buffer descriptors. */
         cbd_base = dma_alloc_coherent(NULL, PAGE_SIZE, &fep->bd_dma,
diff --git a/drivers/net/ethernet/freescale/fec.h b/drivers/net/ethernet/freescale/fec.h
index f5390071efd0..eb4372962839 100644
--- a/drivers/net/ethernet/freescale/fec.h
+++ b/drivers/net/ethernet/freescale/fec.h
@@ -240,6 +240,7 @@ struct fec_enet_private {
         phy_interface_t phy_interface;
         int     link;
         int     full_duplex;
+        int     speed;
         struct  completion mdio_done;
         int     irq[FEC_IRQ_NUM];
         int     bufdesc_ex;
diff --git a/drivers/net/ethernet/freescale/fec_ptp.c b/drivers/net/ethernet/freescale/fec_ptp.c
index 1f17ca0f2201..0d8df400a479 100644
--- a/drivers/net/ethernet/freescale/fec_ptp.c
+++ b/drivers/net/ethernet/freescale/fec_ptp.c
@@ -128,6 +128,7 @@ void fec_ptp_start_cyclecounter(struct net_device *ndev)
 
         spin_unlock_irqrestore(&fep->tmreg_lock, flags);
 }
+EXPORT_SYMBOL(fec_ptp_start_cyclecounter);
 
 /**
  * fec_ptp_adjfreq - adjust ptp cycle frequency
@@ -318,6 +319,7 @@ int fec_ptp_ioctl(struct net_device *ndev, struct ifreq *ifr, int cmd)
         return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ?
             -EFAULT : 0;
 }
+EXPORT_SYMBOL(fec_ptp_ioctl);
 
 /**
  * fec_time_keep - call timecounter_read every second to avoid timer overrun
@@ -383,3 +385,4 @@ void fec_ptp_init(struct net_device *ndev, struct platform_device *pdev)
                 pr_info("registered PHC device on %s\n", ndev->name);
         }
 }
+EXPORT_SYMBOL(fec_ptp_init);
diff --git a/drivers/net/ethernet/intel/igb/e1000_82575.c b/drivers/net/ethernet/intel/igb/e1000_82575.c
index b64542acfa34..12b1d8480808 100644
--- a/drivers/net/ethernet/intel/igb/e1000_82575.c
+++ b/drivers/net/ethernet/intel/igb/e1000_82575.c
@@ -1818,27 +1818,32 @@ out:
  **/
 void igb_vmdq_set_anti_spoofing_pf(struct e1000_hw *hw, bool enable, int pf)
 {
-        u32 dtxswc;
+        u32 reg_val, reg_offset;
 
         switch (hw->mac.type) {
         case e1000_82576:
+                reg_offset = E1000_DTXSWC;
+                break;
         case e1000_i350:
-                dtxswc = rd32(E1000_DTXSWC);
-                if (enable) {
-                        dtxswc |= (E1000_DTXSWC_MAC_SPOOF_MASK |
-                                   E1000_DTXSWC_VLAN_SPOOF_MASK);
-                        /* The PF can spoof - it has to in order to
-                         * support emulation mode NICs */
-                        dtxswc ^= (1 << pf | 1 << (pf + MAX_NUM_VFS));
-                } else {
-                        dtxswc &= ~(E1000_DTXSWC_MAC_SPOOF_MASK |
-                                    E1000_DTXSWC_VLAN_SPOOF_MASK);
-                }
-                wr32(E1000_DTXSWC, dtxswc);
+                reg_offset = E1000_TXSWC;
                 break;
         default:
-                break;
+                return;
+        }
+
+        reg_val = rd32(reg_offset);
+        if (enable) {
+                reg_val |= (E1000_DTXSWC_MAC_SPOOF_MASK |
+                             E1000_DTXSWC_VLAN_SPOOF_MASK);
+                /* The PF can spoof - it has to in order to
+                 * support emulation mode NICs
+                 */
+                reg_val ^= (1 << pf | 1 << (pf + MAX_NUM_VFS));
+        } else {
+                reg_val &= ~(E1000_DTXSWC_MAC_SPOOF_MASK |
+                             E1000_DTXSWC_VLAN_SPOOF_MASK);
         }
+        wr32(reg_offset, reg_val);
 }
 
 /**
diff --git a/drivers/net/ethernet/intel/igb/igb_hwmon.c b/drivers/net/ethernet/intel/igb/igb_hwmon.c
index 4623502054d5..0478a1abe541 100644
--- a/drivers/net/ethernet/intel/igb/igb_hwmon.c
+++ b/drivers/net/ethernet/intel/igb/igb_hwmon.c
@@ -39,7 +39,7 @@
 #include <linux/pci.h>
 
 #ifdef CONFIG_IGB_HWMON
-struct i2c_board_info i350_sensor_info = {
+static struct i2c_board_info i350_sensor_info = {
         I2C_BOARD_INFO("i350bb", (0Xf8 >> 1)),
 };
 
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index 4dbd62968c7a..8496adfc6a68 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -2542,8 +2542,8 @@ static void igb_probe_vfs(struct igb_adapter *adapter)
         if ((hw->mac.type == e1000_i210) || (hw->mac.type == e1000_i211))
                 return;
 
-        igb_enable_sriov(pdev, max_vfs);
         pci_sriov_set_totalvfs(pdev, 7);
+        igb_enable_sriov(pdev, max_vfs);
 
 #endif /* CONFIG_PCI_IOV */
 }
@@ -2652,7 +2652,7 @@ static int igb_sw_init(struct igb_adapter *adapter)
                 if (max_vfs > 7) {
                         dev_warn(&pdev->dev,
                                  "Maximum of 7 VFs per PF, using max\n");
-                        adapter->vfs_allocated_count = 7;
+                        max_vfs = adapter->vfs_allocated_count = 7;
                 } else
                         adapter->vfs_allocated_count = max_vfs;
                 if (adapter->vfs_allocated_count)
diff --git a/drivers/net/ethernet/intel/igb/igb_ptp.c b/drivers/net/ethernet/intel/igb/igb_ptp.c
index 0987822359f0..0a237507ee85 100644
--- a/drivers/net/ethernet/intel/igb/igb_ptp.c
+++ b/drivers/net/ethernet/intel/igb/igb_ptp.c
@@ -740,7 +740,7 @@ void igb_ptp_init(struct igb_adapter *adapter)
         case e1000_82576:
                 snprintf(adapter->ptp_caps.name, 16, "%pm", netdev->dev_addr);
                 adapter->ptp_caps.owner = THIS_MODULE;
-                adapter->ptp_caps.max_adj = 1000000000;
+                adapter->ptp_caps.max_adj = 999999881;
                 adapter->ptp_caps.n_ext_ts = 0;
                 adapter->ptp_caps.pps = 0;
                 adapter->ptp_caps.adjfreq = igb_ptp_adjfreq_82576;
diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
index c3db6cd69b68..2b6cb5ca48ee 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
@@ -944,9 +944,17 @@ free_queue_irqs:
                 free_irq(adapter->msix_entries[vector].vector,
                          adapter->q_vector[vector]);
         }
-        pci_disable_msix(adapter->pdev);
-        kfree(adapter->msix_entries);
-        adapter->msix_entries = NULL;
+        /* This failure is non-recoverable - it indicates the system is
+         * out of MSIX vector resources and the VF driver cannot run
+         * without them.  Set the number of msix vectors to zero
+         * indicating that not enough can be allocated.  The error
+         * will be returned to the user indicating device open failed.
+         * Any further attempts to force the driver to open will also
+         * fail.  The only way to recover is to unload the driver and
+         * reload it again.  If the system has recovered some MSIX
+         * vectors then it may succeed.
+         */
+        adapter->num_msix_vectors = 0;
         return err;
 }
 
@@ -2572,6 +2580,15 @@ static int ixgbevf_open(struct net_device *netdev)
         struct ixgbe_hw *hw = &adapter->hw;
         int err;
 
+        /* A previous failure to open the device because of a lack of
+         * available MSIX vector resources may have reset the number
+         * of msix vectors variable to zero.  The only way to recover
+         * is to unload/reload the driver and hope that the system has
+         * been able to recover some MSIX vector resources.
+         */
+        if (!adapter->num_msix_vectors)
+                return -ENOMEM;
+
         /* disallow open during test */
         if (test_bit(__IXGBEVF_TESTING, &adapter->state))
                 return -EBUSY;
@@ -2628,7 +2645,6 @@ static int ixgbevf_open(struct net_device *netdev)
 
 err_req_irq:
         ixgbevf_down(adapter);
-        ixgbevf_free_irq(adapter);
 err_setup_rx:
         ixgbevf_free_all_rx_resources(adapter);
 err_setup_tx:
diff --git a/drivers/net/ethernet/lantiq_etop.c b/drivers/net/ethernet/lantiq_etop.c
index 6a2127489af7..bfdb06860397 100644
--- a/drivers/net/ethernet/lantiq_etop.c
+++ b/drivers/net/ethernet/lantiq_etop.c
@@ -769,7 +769,7 @@ ltq_etop_probe(struct platform_device *pdev)
         return 0;
 
 err_free:
-        kfree(dev);
+        free_netdev(dev);
 err_out:
         return err;
 }
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
index 995d4b6d5c1e..f278b10ef714 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
@@ -1637,6 +1637,17 @@ void mlx4_en_stop_port(struct net_device *dev, int detach)
         /* Flush multicast filter */
         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
 
+        /* Remove flow steering rules for the port*/
+        if (mdev->dev->caps.steering_mode ==
+            MLX4_STEERING_MODE_DEVICE_MANAGED) {
+                ASSERT_RTNL();
+                list_for_each_entry_safe(flow, tmp_flow,
+                                         &priv->ethtool_list, list) {
+                        mlx4_flow_detach(mdev->dev, flow->id);
+                        list_del(&flow->list);
+                }
+        }
+
         mlx4_en_destroy_drop_qp(priv);
 
         /* Free TX Rings */
@@ -1657,17 +1668,6 @@ void mlx4_en_stop_port(struct net_device *dev, int detach)
         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAGS2_REASSIGN_MAC_EN))
                 mdev->mac_removed[priv->port] = 1;
 
-        /* Remove flow steering rules for the port*/
-        if (mdev->dev->caps.steering_mode ==
-            MLX4_STEERING_MODE_DEVICE_MANAGED) {
-                ASSERT_RTNL();
-                list_for_each_entry_safe(flow, tmp_flow,
-                                         &priv->ethtool_list, list) {
-                        mlx4_flow_detach(mdev->dev, flow->id);
-                        list_del(&flow->list);
-                }
-        }
-
         /* Free RX Rings */
         for (i = 0; i < priv->rx_ring_num; i++) {
                 mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
diff --git a/drivers/net/ethernet/mellanox/mlx4/eq.c b/drivers/net/ethernet/mellanox/mlx4/eq.c
index 251ae2f93116..8e3123a1df88 100644
--- a/drivers/net/ethernet/mellanox/mlx4/eq.c
+++ b/drivers/net/ethernet/mellanox/mlx4/eq.c
@@ -771,7 +771,7 @@ int mlx4_MAP_EQ_wrapper(struct mlx4_dev *dev, int slave,
         struct mlx4_slave_event_eq_info *event_eq =
                 priv->mfunc.master.slave_state[slave].event_eq;
         u32 in_modifier = vhcr->in_modifier;
-        u32 eqn = in_modifier & 0x1FF;
+        u32 eqn = in_modifier & 0x3FF;
         u64 in_param =  vhcr->in_param;
         int err = 0;
         int i;
diff --git a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
index 2995687f1aee..1391b52f443a 100644
--- a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
+++ b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
@@ -99,6 +99,7 @@ struct res_qp {
         struct list_head        mcg_list;
         spinlock_t              mcg_spl;
         int                     local_qpn;
+        atomic_t                ref_count;
 };
 
 enum res_mtt_states {
@@ -197,6 +198,7 @@ enum res_fs_rule_states {
 
 struct res_fs_rule {
         struct res_common       com;
+        int                     qpn;
 };
 
 static void *res_tracker_lookup(struct rb_root *root, u64 res_id)
@@ -355,7 +357,7 @@ static int mpt_mask(struct mlx4_dev *dev)
         return dev->caps.num_mpts - 1;
 }
 
-static void *find_res(struct mlx4_dev *dev, int res_id,
+static void *find_res(struct mlx4_dev *dev, u64 res_id,
                       enum mlx4_resource type)
 {
         struct mlx4_priv *priv = mlx4_priv(dev);
@@ -447,6 +449,7 @@ static struct res_common *alloc_qp_tr(int id)
         ret->local_qpn = id;
         INIT_LIST_HEAD(&ret->mcg_list);
         spin_lock_init(&ret->mcg_spl);
+        atomic_set(&ret->ref_count, 0);
 
         return &ret->com;
 }
@@ -554,7 +557,7 @@ static struct res_common *alloc_xrcdn_tr(int id)
         return &ret->com;
 }
 
-static struct res_common *alloc_fs_rule_tr(u64 id)
+static struct res_common *alloc_fs_rule_tr(u64 id, int qpn)
 {
         struct res_fs_rule *ret;
 
@@ -564,7 +567,7 @@ static struct res_common *alloc_fs_rule_tr(u64 id)
 
         ret->com.res_id = id;
         ret->com.state = RES_FS_RULE_ALLOCATED;
-
+        ret->qpn = qpn;
         return &ret->com;
 }
 
@@ -602,7 +605,7 @@ static struct res_common *alloc_tr(u64 id, enum mlx4_resource type, int slave,
                 ret = alloc_xrcdn_tr(id);
                 break;
         case RES_FS_RULE:
-                ret = alloc_fs_rule_tr(id);
+                ret = alloc_fs_rule_tr(id, extra);
                 break;
         default:
                 return NULL;
@@ -671,10 +674,14 @@ undo:
 
 static int remove_qp_ok(struct res_qp *res)
 {
-        if (res->com.state == RES_QP_BUSY)
+        if (res->com.state == RES_QP_BUSY || atomic_read(&res->ref_count) ||
+            !list_empty(&res->mcg_list)) {
+                pr_err("resource tracker: fail to remove qp, state %d, ref_count %d\n",
+                       res->com.state, atomic_read(&res->ref_count));
                 return -EBUSY;
-        else if (res->com.state != RES_QP_RESERVED)
+        } else if (res->com.state != RES_QP_RESERVED) {
                 return -EPERM;
+        }
 
         return 0;
 }
@@ -3124,6 +3131,7 @@ int mlx4_QP_FLOW_STEERING_ATTACH_wrapper(struct mlx4_dev *dev, int slave,
         struct list_head *rlist = &tracker->slave_list[slave].res_list[RES_MAC];
         int err;
         int qpn;
+        struct res_qp *rqp;
         struct mlx4_net_trans_rule_hw_ctrl *ctrl;
         struct _rule_hw  *rule_header;
         int header_id;
@@ -3134,7 +3142,7 @@ int mlx4_QP_FLOW_STEERING_ATTACH_wrapper(struct mlx4_dev *dev, int slave,
 
         ctrl = (struct mlx4_net_trans_rule_hw_ctrl *)inbox->buf;
         qpn = be32_to_cpu(ctrl->qpn) & 0xffffff;
-        err = get_res(dev, slave, qpn, RES_QP, NULL);
+        err = get_res(dev, slave, qpn, RES_QP, &rqp);
         if (err) {
                 pr_err("Steering rule with qpn 0x%x rejected.\n", qpn);
                 return err;
@@ -3175,14 +3183,16 @@ int mlx4_QP_FLOW_STEERING_ATTACH_wrapper(struct mlx4_dev *dev, int slave,
         if (err)
                 goto err_put;
 
-        err = add_res_range(dev, slave, vhcr->out_param, 1, RES_FS_RULE, 0);
+        err = add_res_range(dev, slave, vhcr->out_param, 1, RES_FS_RULE, qpn);
         if (err) {
                 mlx4_err(dev, "Fail to add flow steering resources.\n ");
                 /* detach rule*/
                 mlx4_cmd(dev, vhcr->out_param, 0, 0,
                          MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
                          MLX4_CMD_NATIVE);
+                goto err_put;
         }
+        atomic_inc(&rqp->ref_count);
 err_put:
         put_res(dev, slave, qpn, RES_QP);
         return err;
@@ -3195,20 +3205,35 @@ int mlx4_QP_FLOW_STEERING_DETACH_wrapper(struct mlx4_dev *dev, int slave,
                                          struct mlx4_cmd_info *cmd)
 {
         int err;
+        struct res_qp *rqp;
+        struct res_fs_rule *rrule;
 
         if (dev->caps.steering_mode !=
             MLX4_STEERING_MODE_DEVICE_MANAGED)
                 return -EOPNOTSUPP;
 
+        err = get_res(dev, slave, vhcr->in_param, RES_FS_RULE, &rrule);
+        if (err)
+                return err;
+        /* Release the rule form busy state before removal */
+        put_res(dev, slave, vhcr->in_param, RES_FS_RULE);
+        err = get_res(dev, slave, rrule->qpn, RES_QP, &rqp);
+        if (err)
+                return err;
+
         err = rem_res_range(dev, slave, vhcr->in_param, 1, RES_FS_RULE, 0);
         if (err) {
                 mlx4_err(dev, "Fail to remove flow steering resources.\n ");
-                return err;
+                goto out;
         }
 
         err = mlx4_cmd(dev, vhcr->in_param, 0, 0,
                        MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A,
                        MLX4_CMD_NATIVE);
+        if (!err)
+                atomic_dec(&rqp->ref_count);
+out:
+        put_res(dev, slave, rrule->qpn, RES_QP);
         return err;
 }
 
@@ -3806,6 +3831,7 @@ void mlx4_delete_all_resources_for_slave(struct mlx4_dev *dev, int slave)
         mutex_lock(&priv->mfunc.master.res_tracker.slave_list[slave].mutex);
         /*VLAN*/
         rem_slave_macs(dev, slave);
+        rem_slave_fs_rule(dev, slave);
         rem_slave_qps(dev, slave);
         rem_slave_srqs(dev, slave);
         rem_slave_cqs(dev, slave);
@@ -3814,6 +3840,5 @@ void mlx4_delete_all_resources_for_slave(struct mlx4_dev *dev, int slave)
         rem_slave_mtts(dev, slave);
         rem_slave_counters(dev, slave);
         rem_slave_xrcdns(dev, slave);
-        rem_slave_fs_rule(dev, slave);
         mutex_unlock(&priv->mfunc.master.res_tracker.slave_list[slave].mutex);
 }
diff --git a/drivers/net/ethernet/nxp/lpc_eth.c b/drivers/net/ethernet/nxp/lpc_eth.c
index c4122c86f829..efa29b712d5f 100644
--- a/drivers/net/ethernet/nxp/lpc_eth.c
+++ b/drivers/net/ethernet/nxp/lpc_eth.c
@@ -1472,7 +1472,8 @@ static int lpc_eth_drv_probe(struct platform_device *pdev)
         }
         platform_set_drvdata(pdev, ndev);
 
-        if (lpc_mii_init(pldat) != 0)
+        ret = lpc_mii_init(pldat);
+        if (ret)
                 goto err_out_unregister_netdev;
 
         netdev_info(ndev, "LPC mac at 0x%08x irq %d\n",
diff --git a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c
index 39ab4d09faaa..73ce7dd6b954 100644
--- a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c
+++ b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c
@@ -1726,9 +1726,9 @@ pch_gbe_clean_rx(struct pch_gbe_adapter *adapter,
 
                         skb->protocol = eth_type_trans(skb, netdev);
                         if (tcp_ip_status & PCH_GBE_RXD_ACC_STAT_TCPIPOK)
-                                skb->ip_summed = CHECKSUM_NONE;
-                        else
                                 skb->ip_summed = CHECKSUM_UNNECESSARY;
+                        else
+                                skb->ip_summed = CHECKSUM_NONE;
 
                         napi_gro_receive(&adapter->napi, skb);
                         (*work_done)++;
diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c
index 33e96176e4d8..bf5e3cf97c4d 100644
--- a/drivers/net/ethernet/renesas/sh_eth.c
+++ b/drivers/net/ethernet/renesas/sh_eth.c
@@ -2220,6 +2220,7 @@ static void sh_eth_tsu_init(struct sh_eth_private *mdp)
 /* MDIO bus release function */
 static int sh_mdio_release(struct net_device *ndev)
 {
+        struct sh_eth_private *mdp = netdev_priv(ndev);
         struct mii_bus *bus = dev_get_drvdata(&ndev->dev);
 
         /* unregister mdio bus */
@@ -2234,6 +2235,9 @@ static int sh_mdio_release(struct net_device *ndev)
         /* free bitbang info */
         free_mdio_bitbang(bus);
 
+        /* free bitbang memory */
+        kfree(mdp->bitbang);
+
         return 0;
 }
 
@@ -2262,6 +2266,7 @@ static int sh_mdio_init(struct net_device *ndev, int id,
         bitbang->ctrl.ops = &bb_ops;
 
         /* MII controller setting */
+        mdp->bitbang = bitbang;
         mdp->mii_bus = alloc_mdio_bitbang(&bitbang->ctrl);
         if (!mdp->mii_bus) {
                 ret = -ENOMEM;
@@ -2441,6 +2446,11 @@ static int sh_eth_drv_probe(struct platform_device *pdev)
                 }
                 mdp->tsu_addr = ioremap(rtsu->start,
                                         resource_size(rtsu));
+                if (mdp->tsu_addr == NULL) {
+                        ret = -ENOMEM;
+                        dev_err(&pdev->dev, "TSU ioremap failed.\n");
+                        goto out_release;
+                }
                 mdp->port = devno % 2;
                 ndev->features = NETIF_F_HW_VLAN_FILTER;
         }
diff --git a/drivers/net/ethernet/renesas/sh_eth.h b/drivers/net/ethernet/renesas/sh_eth.h
index bae84fd2e73a..e6655678458e 100644
--- a/drivers/net/ethernet/renesas/sh_eth.h
+++ b/drivers/net/ethernet/renesas/sh_eth.h
@@ -705,6 +705,7 @@ struct sh_eth_private {
         const u16 *reg_offset;
         void __iomem *addr;
         void __iomem *tsu_addr;
+        struct bb_info *bitbang;
         u32 num_rx_ring;
         u32 num_tx_ring;
         dma_addr_t rx_desc_dma;
diff --git a/drivers/net/ethernet/sfc/nic.c b/drivers/net/ethernet/sfc/nic.c
index 0ad790cc473c..eaa8e874a3cb 100644
--- a/drivers/net/ethernet/sfc/nic.c
+++ b/drivers/net/ethernet/sfc/nic.c
@@ -376,7 +376,8 @@ efx_may_push_tx_desc(struct efx_tx_queue *tx_queue, unsigned int write_count)
                 return false;
 
         tx_queue->empty_read_count = 0;
-        return ((empty_read_count ^ write_count) & ~EFX_EMPTY_COUNT_VALID) == 0;
+        return ((empty_read_count ^ write_count) & ~EFX_EMPTY_COUNT_VALID) == 0
+                && tx_queue->write_count - write_count == 1;
 }
 
 /* For each entry inserted into the software descriptor ring, create a
diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index 01ffbc486982..df32a090d08e 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -905,7 +905,7 @@ static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb,
         /* If there is no more tx desc left free then we need to
          * tell the kernel to stop sending us tx frames.
          */
-        if (unlikely(cpdma_check_free_tx_desc(priv->txch)))
+        if (unlikely(!cpdma_check_free_tx_desc(priv->txch)))
                 netif_stop_queue(ndev);
 
         return NETDEV_TX_OK;
@@ -1364,7 +1364,7 @@ static int cpsw_probe_dt(struct cpsw_platform_data *data,
                 struct platform_device *mdio;
 
                 parp = of_get_property(slave_node, "phy_id", &lenp);
-                if ((parp == NULL) && (lenp != (sizeof(void *) * 2))) {
+                if ((parp == NULL) || (lenp != (sizeof(void *) * 2))) {
                         pr_err("Missing slave[%d] phy_id property\n", i);
                         ret = -EINVAL;
                         goto error_ret;
diff --git a/drivers/net/ethernet/ti/davinci_emac.c b/drivers/net/ethernet/ti/davinci_emac.c
index 52c05366599a..ae1b77aa199f 100644
--- a/drivers/net/ethernet/ti/davinci_emac.c
+++ b/drivers/net/ethernet/ti/davinci_emac.c
@@ -1102,7 +1102,7 @@ static int emac_dev_xmit(struct sk_buff *skb, struct net_device *ndev)
         /* If there is no more tx desc left free then we need to
          * tell the kernel to stop sending us tx frames.
          */
-        if (unlikely(cpdma_check_free_tx_desc(priv->txchan)))
+        if (unlikely(!cpdma_check_free_tx_desc(priv->txchan)))
                 netif_stop_queue(ndev);
 
         return NETDEV_TX_OK;
diff --git a/drivers/net/netconsole.c b/drivers/net/netconsole.c
index 37add21a3d7d..59ac143dec25 100644
--- a/drivers/net/netconsole.c
+++ b/drivers/net/netconsole.c
@@ -666,6 +666,7 @@ static int netconsole_netdev_event(struct notifier_block *this,
                 goto done;
 
         spin_lock_irqsave(&target_list_lock, flags);
+restart:
         list_for_each_entry(nt, &target_list, list) {
                 netconsole_target_get(nt);
                 if (nt->np.dev == dev) {
@@ -678,15 +679,17 @@ static int netconsole_netdev_event(struct notifier_block *this,
                         case NETDEV_UNREGISTER:
                                 /*
                                  * rtnl_lock already held
+                                 * we might sleep in __netpoll_cleanup()
                                  */
-                                if (nt->np.dev) {
-                                        __netpoll_cleanup(&nt->np);
-                                        dev_put(nt->np.dev);
-                                        nt->np.dev = NULL;
-                                }
+                                spin_unlock_irqrestore(&target_list_lock, flags);
+                                __netpoll_cleanup(&nt->np);
+                                spin_lock_irqsave(&target_list_lock, flags);
+                                dev_put(nt->np.dev);
+                                nt->np.dev = NULL;
                                 nt->enabled = 0;
                                 stopped = true;
-                                break;
+                                netconsole_target_put(nt);
+                                goto restart;
                         }
                 }
                 netconsole_target_put(nt);
diff --git a/drivers/net/usb/Kconfig b/drivers/net/usb/Kconfig
index 3b6e9b83342d..7c769d8e25ad 100644
--- a/drivers/net/usb/Kconfig
+++ b/drivers/net/usb/Kconfig
@@ -268,7 +268,7 @@ config USB_NET_SMSC75XX
         select CRC16
         select CRC32
         help
-          This option adds support for SMSC LAN95XX based USB 2.0
+          This option adds support for SMSC LAN75XX based USB 2.0
           Gigabit Ethernet adapters.
 
 config USB_NET_SMSC95XX
diff --git a/drivers/net/usb/cdc_mbim.c b/drivers/net/usb/cdc_mbim.c
index 248d2dc765a5..16c842997291 100644
--- a/drivers/net/usb/cdc_mbim.c
+++ b/drivers/net/usb/cdc_mbim.c
@@ -68,18 +68,9 @@ static int cdc_mbim_bind(struct usbnet *dev, struct usb_interface *intf)
         struct cdc_ncm_ctx *ctx;
         struct usb_driver *subdriver = ERR_PTR(-ENODEV);
         int ret = -ENODEV;
-        u8 data_altsetting = CDC_NCM_DATA_ALTSETTING_NCM;
+        u8 data_altsetting = cdc_ncm_select_altsetting(dev, intf);
         struct cdc_mbim_state *info = (void *)&dev->data;
 
-        /* see if interface supports MBIM alternate setting */
-        if (intf->num_altsetting == 2) {
-                if (!cdc_ncm_comm_intf_is_mbim(intf->cur_altsetting))
-                        usb_set_interface(dev->udev,
-                                          intf->cur_altsetting->desc.bInterfaceNumber,
-                                          CDC_NCM_COMM_ALTSETTING_MBIM);
-                data_altsetting = CDC_NCM_DATA_ALTSETTING_MBIM;
-        }
-
         /* Probably NCM, defer for cdc_ncm_bind */
         if (!cdc_ncm_comm_intf_is_mbim(intf->cur_altsetting))
                 goto err;
diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c
index 61b74a2b89ac..4709fa3497cf 100644
--- a/drivers/net/usb/cdc_ncm.c
+++ b/drivers/net/usb/cdc_ncm.c
@@ -55,6 +55,14 @@
 
 #define DRIVER_VERSION                          "14-Mar-2012"
 
+#if IS_ENABLED(CONFIG_USB_NET_CDC_MBIM)
+static bool prefer_mbim = true;
+#else
+static bool prefer_mbim;
+#endif
+module_param(prefer_mbim, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(prefer_mbim, "Prefer MBIM setting on dual NCM/MBIM functions");
+
 static void cdc_ncm_txpath_bh(unsigned long param);
 static void cdc_ncm_tx_timeout_start(struct cdc_ncm_ctx *ctx);
 static enum hrtimer_restart cdc_ncm_tx_timer_cb(struct hrtimer *hr_timer);
@@ -550,9 +558,12 @@ void cdc_ncm_unbind(struct usbnet *dev, struct usb_interface *intf)
 }
 EXPORT_SYMBOL_GPL(cdc_ncm_unbind);
 
-static int cdc_ncm_bind(struct usbnet *dev, struct usb_interface *intf)
+/* Select the MBIM altsetting iff it is preferred and available,
+ * returning the number of the corresponding data interface altsetting
+ */
+u8 cdc_ncm_select_altsetting(struct usbnet *dev, struct usb_interface *intf)
 {
-        int ret;
+        struct usb_host_interface *alt;
 
         /* The MBIM spec defines a NCM compatible default altsetting,
          * which we may have matched:
@@ -568,23 +579,27 @@ static int cdc_ncm_bind(struct usbnet *dev, struct usb_interface *intf)
          *   endpoint descriptors, shall be constructed according to
          *   the rules given in section 6 (USB Device Model) of this
          *   specification."
-         *
-         * Do not bind to such interfaces, allowing cdc_mbim to handle
-         * them
          */
-#if IS_ENABLED(CONFIG_USB_NET_CDC_MBIM)
-        if ((intf->num_altsetting == 2) &&
-            !usb_set_interface(dev->udev,
-                               intf->cur_altsetting->desc.bInterfaceNumber,
-                               CDC_NCM_COMM_ALTSETTING_MBIM)) {
-                if (cdc_ncm_comm_intf_is_mbim(intf->cur_altsetting))
-                        return -ENODEV;
-                else
-                        usb_set_interface(dev->udev,
-                                          intf->cur_altsetting->desc.bInterfaceNumber,
-                                          CDC_NCM_COMM_ALTSETTING_NCM);
+        if (prefer_mbim && intf->num_altsetting == 2) {
+                alt = usb_altnum_to_altsetting(intf, CDC_NCM_COMM_ALTSETTING_MBIM);
+                if (alt && cdc_ncm_comm_intf_is_mbim(alt) &&
+                    !usb_set_interface(dev->udev,
+                                       intf->cur_altsetting->desc.bInterfaceNumber,
+                                       CDC_NCM_COMM_ALTSETTING_MBIM))
+                        return CDC_NCM_DATA_ALTSETTING_MBIM;
         }
-#endif
+        return CDC_NCM_DATA_ALTSETTING_NCM;
+}
+EXPORT_SYMBOL_GPL(cdc_ncm_select_altsetting);
+
+static int cdc_ncm_bind(struct usbnet *dev, struct usb_interface *intf)
+{
+        int ret;
+
+        /* MBIM backwards compatible function? */
+        cdc_ncm_select_altsetting(dev, intf);
+        if (cdc_ncm_comm_intf_is_mbim(intf->cur_altsetting))
+                return -ENODEV;
 
         /* NCM data altsetting is always 1 */
         ret = cdc_ncm_bind_common(dev, intf, 1);
diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c
index efb5c7c33a28..968d5d50751d 100644
--- a/drivers/net/usb/qmi_wwan.c
+++ b/drivers/net/usb/qmi_wwan.c
@@ -139,16 +139,9 @@ static int qmi_wwan_bind(struct usbnet *dev, struct usb_interface *intf)
 
         BUILD_BUG_ON((sizeof(((struct usbnet *)0)->data) < sizeof(struct qmi_wwan_state)));
 
-        /* control and data is shared? */
-        if (intf->cur_altsetting->desc.bNumEndpoints == 3) {
-                info->control = intf;
-                info->data = intf;
-                goto shared;
-        }
-
-        /* else require a single interrupt status endpoint on control intf */
-        if (intf->cur_altsetting->desc.bNumEndpoints != 1)
-                goto err;
+        /* set up initial state */
+        info->control = intf;
+        info->data = intf;
 
         /* and a number of CDC descriptors */
         while (len > 3) {
@@ -207,25 +200,14 @@ next_desc:
                 buf += h->bLength;
         }
 
-        /* did we find all the required ones? */
-        if (!(found & (1 << USB_CDC_HEADER_TYPE)) ||
-            !(found & (1 << USB_CDC_UNION_TYPE))) {
-                dev_err(&intf->dev, "CDC functional descriptors missing\n");
-                goto err;
-        }
-
-        /* verify CDC Union */
-        if (desc->bInterfaceNumber != cdc_union->bMasterInterface0) {
-                dev_err(&intf->dev, "bogus CDC Union: master=%u\n", cdc_union->bMasterInterface0);
-                goto err;
-        }
-
-        /* need to save these for unbind */
-        info->control = intf;
-        info->data = usb_ifnum_to_if(dev->udev, cdc_union->bSlaveInterface0);
-        if (!info->data) {
-                dev_err(&intf->dev, "bogus CDC Union: slave=%u\n", cdc_union->bSlaveInterface0);
-                goto err;
+        /* Use separate control and data interfaces if we found a CDC Union */
+        if (cdc_union) {
+                info->data = usb_ifnum_to_if(dev->udev, cdc_union->bSlaveInterface0);
+                if (desc->bInterfaceNumber != cdc_union->bMasterInterface0 || !info->data) {
+                        dev_err(&intf->dev, "bogus CDC Union: master=%u, slave=%u\n",
+                                cdc_union->bMasterInterface0, cdc_union->bSlaveInterface0);
+                        goto err;
+                }
         }
 
         /* errors aren't fatal - we can live with the dynamic address */
@@ -235,11 +217,12 @@ next_desc:
         }
 
         /* claim data interface and set it up */
-        status = usb_driver_claim_interface(driver, info->data, dev);
-        if (status < 0)
-                goto err;
+        if (info->control != info->data) {
+                status = usb_driver_claim_interface(driver, info->data, dev);
+                if (status < 0)
+                        goto err;
+        }
 
-shared:
         status = qmi_wwan_register_subdriver(dev);
         if (status < 0 && info->control != info->data) {
                 usb_set_intfdata(info->data, NULL);
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_calib.c b/drivers/net/wireless/ath/ath9k/ar9003_calib.c
index 4cc13940c895..f76c3ca07a45 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_calib.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_calib.c
@@ -1023,6 +1023,7 @@ static bool ar9003_hw_init_cal(struct ath_hw *ah,
                                           AR_PHY_AGC_CONTROL_FLTR_CAL   |
                                           AR_PHY_AGC_CONTROL_PKDET_CAL;
 
+        /* Use chip chainmask only for calibration */
         ar9003_hw_set_chain_masks(ah, ah->caps.rx_chainmask, ah->caps.tx_chainmask);
 
         if (rtt) {
@@ -1150,6 +1151,9 @@ skip_tx_iqcal:
                 ar9003_hw_rtt_disable(ah);
         }
 
+        /* Revert chainmask to runtime parameters */
+        ar9003_hw_set_chain_masks(ah, ah->rxchainmask, ah->txchainmask);
+
         /* Initialize list pointers */
         ah->cal_list = ah->cal_list_last = ah->cal_list_curr = NULL;
 
diff --git a/drivers/net/wireless/ath/ath9k/link.c b/drivers/net/wireless/ath/ath9k/link.c
index ade3afb21f91..39c84ecf6a42 100644
--- a/drivers/net/wireless/ath/ath9k/link.c
+++ b/drivers/net/wireless/ath/ath9k/link.c
@@ -28,21 +28,21 @@ void ath_tx_complete_poll_work(struct work_struct *work)
         int i;
         bool needreset = false;
 
-        for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
-                if (ATH_TXQ_SETUP(sc, i)) {
-                        txq = &sc->tx.txq[i];
-                        ath_txq_lock(sc, txq);
-                        if (txq->axq_depth) {
-                                if (txq->axq_tx_inprogress) {
-                                        needreset = true;
-                                        ath_txq_unlock(sc, txq);
-                                        break;
-                                } else {
-                                        txq->axq_tx_inprogress = true;
-                                }
+        for (i = 0; i < IEEE80211_NUM_ACS; i++) {
+                txq = sc->tx.txq_map[i];
+
+                ath_txq_lock(sc, txq);
+                if (txq->axq_depth) {
+                        if (txq->axq_tx_inprogress) {
+                                needreset = true;
+                                ath_txq_unlock(sc, txq);
+                                break;
+                        } else {
+                                txq->axq_tx_inprogress = true;
                         }
-                        ath_txq_unlock_complete(sc, txq);
                 }
+                ath_txq_unlock_complete(sc, txq);
+        }
 
         if (needreset) {
                 ath_dbg(ath9k_hw_common(sc->sc_ah), RESET,
diff --git a/drivers/net/wireless/iwlegacy/3945-mac.c b/drivers/net/wireless/iwlegacy/3945-mac.c
index 3630a41df50d..c353b5f19c8c 100644
--- a/drivers/net/wireless/iwlegacy/3945-mac.c
+++ b/drivers/net/wireless/iwlegacy/3945-mac.c
@@ -475,6 +475,7 @@ il3945_tx_skb(struct il_priv *il,
         dma_addr_t txcmd_phys;
         int txq_id = skb_get_queue_mapping(skb);
         u16 len, idx, hdr_len;
+        u16 firstlen, secondlen;
         u8 id;
         u8 unicast;
         u8 sta_id;
@@ -589,21 +590,22 @@ il3945_tx_skb(struct il_priv *il,
         len =
             sizeof(struct il3945_tx_cmd) + sizeof(struct il_cmd_header) +
             hdr_len;
-        len = (len + 3) & ~3;
+        firstlen = (len + 3) & ~3;
 
         /* Physical address of this Tx command's header (not MAC header!),
          * within command buffer array. */
         txcmd_phys =
-            pci_map_single(il->pci_dev, &out_cmd->hdr, len, PCI_DMA_TODEVICE);
+            pci_map_single(il->pci_dev, &out_cmd->hdr, firstlen,
+                           PCI_DMA_TODEVICE);
         if (unlikely(pci_dma_mapping_error(il->pci_dev, txcmd_phys)))
                 goto drop_unlock;
 
         /* Set up TFD's 2nd entry to point directly to remainder of skb,
          * if any (802.11 null frames have no payload). */
-        len = skb->len - hdr_len;
-        if (len) {
+        secondlen = skb->len - hdr_len;
+        if (secondlen > 0) {
                 phys_addr =
-                    pci_map_single(il->pci_dev, skb->data + hdr_len, len,
+                    pci_map_single(il->pci_dev, skb->data + hdr_len, secondlen,
                                    PCI_DMA_TODEVICE);
                 if (unlikely(pci_dma_mapping_error(il->pci_dev, phys_addr)))
                         goto drop_unlock;
@@ -611,12 +613,12 @@ il3945_tx_skb(struct il_priv *il,
 
         /* Add buffer containing Tx command and MAC(!) header to TFD's
          * first entry */
-        il->ops->txq_attach_buf_to_tfd(il, txq, txcmd_phys, len, 1, 0);
+        il->ops->txq_attach_buf_to_tfd(il, txq, txcmd_phys, firstlen, 1, 0);
         dma_unmap_addr_set(out_meta, mapping, txcmd_phys);
-        dma_unmap_len_set(out_meta, len, len);
-        if (len)
-                il->ops->txq_attach_buf_to_tfd(il, txq, phys_addr, len, 0,
-                                               U32_PAD(len));
+        dma_unmap_len_set(out_meta, len, firstlen);
+        if (secondlen > 0)
+                il->ops->txq_attach_buf_to_tfd(il, txq, phys_addr, secondlen, 0,
+                                               U32_PAD(secondlen));
 
         if (!ieee80211_has_morefrags(hdr->frame_control)) {
                 txq->need_update = 1;
diff --git a/drivers/net/wireless/mwifiex/cmdevt.c b/drivers/net/wireless/mwifiex/cmdevt.c
index 20a6c5555873..b5c8b962ce12 100644
--- a/drivers/net/wireless/mwifiex/cmdevt.c
+++ b/drivers/net/wireless/mwifiex/cmdevt.c
@@ -157,6 +157,20 @@ static int mwifiex_dnld_cmd_to_fw(struct mwifiex_private *priv,
                 return -1;
         }
 
+        cmd_code = le16_to_cpu(host_cmd->command);
+        cmd_size = le16_to_cpu(host_cmd->size);
+
+        if (adapter->hw_status == MWIFIEX_HW_STATUS_RESET &&
+            cmd_code != HostCmd_CMD_FUNC_SHUTDOWN &&
+            cmd_code != HostCmd_CMD_FUNC_INIT) {
+                dev_err(adapter->dev,
+                        "DNLD_CMD: FW in reset state, ignore cmd %#x\n",
+                        cmd_code);
+                mwifiex_complete_cmd(adapter, cmd_node);
+                mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
+                return -1;
+        }
+
         /* Set command sequence number */
         adapter->seq_num++;
         host_cmd->seq_num = cpu_to_le16(HostCmd_SET_SEQ_NO_BSS_INFO
@@ -168,9 +182,6 @@ static int mwifiex_dnld_cmd_to_fw(struct mwifiex_private *priv,
         adapter->curr_cmd = cmd_node;
         spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
 
-        cmd_code = le16_to_cpu(host_cmd->command);
-        cmd_size = le16_to_cpu(host_cmd->size);
-
         /* Adjust skb length */
         if (cmd_node->cmd_skb->len > cmd_size)
                 /*
@@ -484,8 +495,6 @@ int mwifiex_send_cmd_sync(struct mwifiex_private *priv, uint16_t cmd_no,
 
         ret = mwifiex_send_cmd_async(priv, cmd_no, cmd_action, cmd_oid,
                                      data_buf);
-        if (!ret)
-                ret = mwifiex_wait_queue_complete(adapter);
 
         return ret;
 }
@@ -588,9 +597,10 @@ int mwifiex_send_cmd_async(struct mwifiex_private *priv, uint16_t cmd_no,
         if (cmd_no == HostCmd_CMD_802_11_SCAN) {
                 mwifiex_queue_scan_cmd(priv, cmd_node);
         } else {
-                adapter->cmd_queued = cmd_node;
                 mwifiex_insert_cmd_to_pending_q(adapter, cmd_node, true);
                 queue_work(adapter->workqueue, &adapter->main_work);
+                if (cmd_node->wait_q_enabled)
+                        ret = mwifiex_wait_queue_complete(adapter, cmd_node);
         }
 
         return ret;
diff --git a/drivers/net/wireless/mwifiex/init.c b/drivers/net/wireless/mwifiex/init.c
index e38aa9b3663d..0ff4c37ab42a 100644
--- a/drivers/net/wireless/mwifiex/init.c
+++ b/drivers/net/wireless/mwifiex/init.c
@@ -709,6 +709,14 @@ mwifiex_shutdown_drv(struct mwifiex_adapter *adapter)
                 return ret;
         }
 
+        /* cancel current command */
+        if (adapter->curr_cmd) {
+                dev_warn(adapter->dev, "curr_cmd is still in processing\n");
+                del_timer(&adapter->cmd_timer);
+                mwifiex_insert_cmd_to_free_q(adapter, adapter->curr_cmd);
+                adapter->curr_cmd = NULL;
+        }
+
         /* shut down mwifiex */
         dev_dbg(adapter->dev, "info: shutdown mwifiex...\n");
 
diff --git a/drivers/net/wireless/mwifiex/join.c b/drivers/net/wireless/mwifiex/join.c
index 246aa62a4817..2fe0ceba4400 100644
--- a/drivers/net/wireless/mwifiex/join.c
+++ b/drivers/net/wireless/mwifiex/join.c
@@ -1117,10 +1117,9 @@ mwifiex_cmd_802_11_ad_hoc_join(struct mwifiex_private *priv,
                 adhoc_join->bss_descriptor.bssid,
                 adhoc_join->bss_descriptor.ssid);
 
-        for (i = 0; bss_desc->supported_rates[i] &&
-                        i < MWIFIEX_SUPPORTED_RATES;
-                        i++)
-                        ;
+        for (i = 0; i < MWIFIEX_SUPPORTED_RATES &&
+                    bss_desc->supported_rates[i]; i++)
+                ;
         rates_size = i;
 
         /* Copy Data Rates from the Rates recorded in scan response */
diff --git a/drivers/net/wireless/mwifiex/main.h b/drivers/net/wireless/mwifiex/main.h
index 553adfb0aa81..7035ade9af74 100644
--- a/drivers/net/wireless/mwifiex/main.h
+++ b/drivers/net/wireless/mwifiex/main.h
@@ -723,7 +723,6 @@ struct mwifiex_adapter {
         u16 cmd_wait_q_required;
         struct mwifiex_wait_queue cmd_wait_q;
         u8 scan_wait_q_woken;
-        struct cmd_ctrl_node *cmd_queued;
         spinlock_t queue_lock;          /* lock for tx queues */
         struct completion fw_load;
         u8 country_code[IEEE80211_COUNTRY_STRING_LEN];
@@ -1018,7 +1017,8 @@ int mwifiex_request_set_multicast_list(struct mwifiex_private *priv,
                         struct mwifiex_multicast_list *mcast_list);
 int mwifiex_copy_mcast_addr(struct mwifiex_multicast_list *mlist,
                             struct net_device *dev);
-int mwifiex_wait_queue_complete(struct mwifiex_adapter *adapter);
+int mwifiex_wait_queue_complete(struct mwifiex_adapter *adapter,
+                                struct cmd_ctrl_node *cmd_queued);
 int mwifiex_bss_start(struct mwifiex_private *priv, struct cfg80211_bss *bss,
                       struct cfg80211_ssid *req_ssid);
 int mwifiex_cancel_hs(struct mwifiex_private *priv, int cmd_type);
diff --git a/drivers/net/wireless/mwifiex/scan.c b/drivers/net/wireless/mwifiex/scan.c
index bb60c2754a97..d215b4d3c51b 100644
--- a/drivers/net/wireless/mwifiex/scan.c
+++ b/drivers/net/wireless/mwifiex/scan.c
@@ -1388,10 +1388,13 @@ int mwifiex_scan_networks(struct mwifiex_private *priv,
                         list_del(&cmd_node->list);
                         spin_unlock_irqrestore(&adapter->scan_pending_q_lock,
                                                flags);
-                        adapter->cmd_queued = cmd_node;
                         mwifiex_insert_cmd_to_pending_q(adapter, cmd_node,
                                                         true);
                         queue_work(adapter->workqueue, &adapter->main_work);
+
+                        /* Perform internal scan synchronously */
+                        if (!priv->scan_request)
+                                mwifiex_wait_queue_complete(adapter, cmd_node);
                 } else {
                         spin_unlock_irqrestore(&adapter->scan_pending_q_lock,
                                                flags);
@@ -1946,9 +1949,6 @@ int mwifiex_request_scan(struct mwifiex_private *priv,
                 /* Normal scan */
                 ret = mwifiex_scan_networks(priv, NULL);
 
-        if (!ret)
-                ret = mwifiex_wait_queue_complete(priv->adapter);
-
         up(&priv->async_sem);
 
         return ret;
diff --git a/drivers/net/wireless/mwifiex/sta_ioctl.c b/drivers/net/wireless/mwifiex/sta_ioctl.c
index 9f33c92c90f5..13100f8de3db 100644
--- a/drivers/net/wireless/mwifiex/sta_ioctl.c
+++ b/drivers/net/wireless/mwifiex/sta_ioctl.c
@@ -54,16 +54,10 @@ int mwifiex_copy_mcast_addr(struct mwifiex_multicast_list *mlist,
  * This function waits on a cmd wait queue. It also cancels the pending
  * request after waking up, in case of errors.
  */
-int mwifiex_wait_queue_complete(struct mwifiex_adapter *adapter)
+int mwifiex_wait_queue_complete(struct mwifiex_adapter *adapter,
+                                struct cmd_ctrl_node *cmd_queued)
 {
         int status;
-        struct cmd_ctrl_node *cmd_queued;
-
-        if (!adapter->cmd_queued)
-                return 0;
-
-        cmd_queued = adapter->cmd_queued;
-        adapter->cmd_queued = NULL;
 
         dev_dbg(adapter->dev, "cmd pending\n");
         atomic_inc(&adapter->cmd_pending);
diff --git a/drivers/net/wireless/rt2x00/Kconfig b/drivers/net/wireless/rt2x00/Kconfig
index 44d6ead43341..2bf4efa33186 100644
--- a/drivers/net/wireless/rt2x00/Kconfig
+++ b/drivers/net/wireless/rt2x00/Kconfig
@@ -55,10 +55,10 @@ config RT61PCI
 
 config RT2800PCI
         tristate "Ralink rt27xx/rt28xx/rt30xx (PCI/PCIe/PCMCIA) support"
-        depends on PCI || RALINK_RT288X || RALINK_RT305X
+        depends on PCI || SOC_RT288X || SOC_RT305X
         select RT2800_LIB
         select RT2X00_LIB_PCI if PCI
-        select RT2X00_LIB_SOC if RALINK_RT288X || RALINK_RT305X
+        select RT2X00_LIB_SOC if SOC_RT288X || SOC_RT305X
         select RT2X00_LIB_FIRMWARE
         select RT2X00_LIB_CRYPTO
         select CRC_CCITT
diff --git a/drivers/net/wireless/rt2x00/rt2800pci.c b/drivers/net/wireless/rt2x00/rt2800pci.c
index 48a01aa21f1c..ded73da4de0b 100644
--- a/drivers/net/wireless/rt2x00/rt2800pci.c
+++ b/drivers/net/wireless/rt2x00/rt2800pci.c
@@ -89,7 +89,7 @@ static void rt2800pci_mcu_status(struct rt2x00_dev *rt2x00dev, const u8 token)
         rt2x00pci_register_write(rt2x00dev, H2M_MAILBOX_CID, ~0);
 }
 
-#if defined(CONFIG_RALINK_RT288X) || defined(CONFIG_RALINK_RT305X)
+#if defined(CONFIG_SOC_RT288X) || defined(CONFIG_SOC_RT305X)
 static int rt2800pci_read_eeprom_soc(struct rt2x00_dev *rt2x00dev)
 {
         void __iomem *base_addr = ioremap(0x1F040000, EEPROM_SIZE);
@@ -107,7 +107,7 @@ static inline int rt2800pci_read_eeprom_soc(struct rt2x00_dev *rt2x00dev)
 {
         return -ENOMEM;
 }
-#endif /* CONFIG_RALINK_RT288X || CONFIG_RALINK_RT305X */
+#endif /* CONFIG_SOC_RT288X || CONFIG_SOC_RT305X */
 
 #ifdef CONFIG_PCI
 static void rt2800pci_eepromregister_read(struct eeprom_93cx6 *eeprom)
@@ -1177,7 +1177,7 @@ MODULE_DEVICE_TABLE(pci, rt2800pci_device_table);
 #endif /* CONFIG_PCI */
 MODULE_LICENSE("GPL");
 
-#if defined(CONFIG_RALINK_RT288X) || defined(CONFIG_RALINK_RT305X)
+#if defined(CONFIG_SOC_RT288X) || defined(CONFIG_SOC_RT305X)
 static int rt2800soc_probe(struct platform_device *pdev)
 {
         return rt2x00soc_probe(pdev, &rt2800pci_ops);
@@ -1194,7 +1194,7 @@ static struct platform_driver rt2800soc_driver = {
         .suspend        = rt2x00soc_suspend,
         .resume         = rt2x00soc_resume,
 };
-#endif /* CONFIG_RALINK_RT288X || CONFIG_RALINK_RT305X */
+#endif /* CONFIG_SOC_RT288X || CONFIG_SOC_RT305X */
 
 #ifdef CONFIG_PCI
 static int rt2800pci_probe(struct pci_dev *pci_dev,
@@ -1217,7 +1217,7 @@ static int __init rt2800pci_init(void)
 {
         int ret = 0;
 
-#if defined(CONFIG_RALINK_RT288X) || defined(CONFIG_RALINK_RT305X)
+#if defined(CONFIG_SOC_RT288X) || defined(CONFIG_SOC_RT305X)
         ret = platform_driver_register(&rt2800soc_driver);
         if (ret)
                 return ret;
@@ -1225,7 +1225,7 @@ static int __init rt2800pci_init(void)
 #ifdef CONFIG_PCI
         ret = pci_register_driver(&rt2800pci_driver);
         if (ret) {
-#if defined(CONFIG_RALINK_RT288X) || defined(CONFIG_RALINK_RT305X)
+#if defined(CONFIG_SOC_RT288X) || defined(CONFIG_SOC_RT305X)
                 platform_driver_unregister(&rt2800soc_driver);
 #endif
                 return ret;
@@ -1240,7 +1240,7 @@ static void __exit rt2800pci_exit(void)
 #ifdef CONFIG_PCI
         pci_unregister_driver(&rt2800pci_driver);
 #endif
-#if defined(CONFIG_RALINK_RT288X) || defined(CONFIG_RALINK_RT305X)
+#if defined(CONFIG_SOC_RT288X) || defined(CONFIG_SOC_RT305X)
         platform_driver_unregister(&rt2800soc_driver);
 #endif
 }
diff --git a/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c b/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c
index b1ccff474c79..c08d0f4c5f3d 100644
--- a/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c
+++ b/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c
@@ -1377,74 +1377,57 @@ void rtl92cu_card_disable(struct ieee80211_hw *hw)
 
 void rtl92cu_set_check_bssid(struct ieee80211_hw *hw, bool check_bssid)
 {
-        /* dummy routine needed for callback from rtl_op_configure_filter() */
-}
-
-/*========================================================================== */
-
-static void _rtl92cu_set_check_bssid(struct ieee80211_hw *hw,
-                              enum nl80211_iftype type)
-{
         struct rtl_priv *rtlpriv = rtl_priv(hw);
-        u32 reg_rcr = rtl_read_dword(rtlpriv, REG_RCR);
         struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
-        struct rtl_phy *rtlphy = &(rtlpriv->phy);
-        u8 filterout_non_associated_bssid = false;
+        u32 reg_rcr = rtl_read_dword(rtlpriv, REG_RCR);
 
-        switch (type) {
-        case NL80211_IFTYPE_ADHOC:
-        case NL80211_IFTYPE_STATION:
-                filterout_non_associated_bssid = true;
-                break;
-        case NL80211_IFTYPE_UNSPECIFIED:
-        case NL80211_IFTYPE_AP:
-        default:
-                break;
-        }
-        if (filterout_non_associated_bssid) {
+        if (rtlpriv->psc.rfpwr_state != ERFON)
+                return;
+
+        if (check_bssid) {
+                u8 tmp;
                 if (IS_NORMAL_CHIP(rtlhal->version)) {
-                        switch (rtlphy->current_io_type) {
-                        case IO_CMD_RESUME_DM_BY_SCAN:
-                                reg_rcr |= (RCR_CBSSID_DATA | RCR_CBSSID_BCN);
-                                rtlpriv->cfg->ops->set_hw_reg(hw,
-                                                 HW_VAR_RCR, (u8 *)(&reg_rcr));
-                                /* enable update TSF */
-                                _rtl92cu_set_bcn_ctrl_reg(hw, 0, BIT(4));
-                                break;
-                        case IO_CMD_PAUSE_DM_BY_SCAN:
-                                reg_rcr &= ~(RCR_CBSSID_DATA | RCR_CBSSID_BCN);
-                                rtlpriv->cfg->ops->set_hw_reg(hw,
-                                                 HW_VAR_RCR, (u8 *)(&reg_rcr));
-                                /* disable update TSF */
-                                _rtl92cu_set_bcn_ctrl_reg(hw, BIT(4), 0);
-                                break;
-                        }
+                        reg_rcr |= (RCR_CBSSID_DATA | RCR_CBSSID_BCN);
+                        tmp = BIT(4);
                 } else {
-                        reg_rcr |= (RCR_CBSSID);
-                        rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_RCR,
-                                                      (u8 *)(&reg_rcr));
-                        _rtl92cu_set_bcn_ctrl_reg(hw, 0, (BIT(4)|BIT(5)));
+                        reg_rcr |= RCR_CBSSID;
+                        tmp = BIT(4) | BIT(5);
                 }
-        } else if (filterout_non_associated_bssid == false) {
+                rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_RCR,
+                                              (u8 *) (&reg_rcr));
+                _rtl92cu_set_bcn_ctrl_reg(hw, 0, tmp);
+        } else {
+                u8 tmp;
                 if (IS_NORMAL_CHIP(rtlhal->version)) {
-                        reg_rcr &= (~(RCR_CBSSID_DATA | RCR_CBSSID_BCN));
-                        rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_RCR,
-                                                      (u8 *)(&reg_rcr));
-                        _rtl92cu_set_bcn_ctrl_reg(hw, BIT(4), 0);
+                        reg_rcr &= ~(RCR_CBSSID_DATA | RCR_CBSSID_BCN);
+                        tmp = BIT(4);
                 } else {
-                        reg_rcr &= (~RCR_CBSSID);
-                        rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_RCR,
-                                                      (u8 *)(&reg_rcr));
-                        _rtl92cu_set_bcn_ctrl_reg(hw, (BIT(4)|BIT(5)), 0);
+                        reg_rcr &= ~RCR_CBSSID;
+                        tmp = BIT(4) | BIT(5);
                 }
+                reg_rcr &= (~(RCR_CBSSID_DATA | RCR_CBSSID_BCN));
+                rtlpriv->cfg->ops->set_hw_reg(hw,
+                                              HW_VAR_RCR, (u8 *) (&reg_rcr));
+                _rtl92cu_set_bcn_ctrl_reg(hw, tmp, 0);
         }
 }
 
+/*========================================================================== */
+
 int rtl92cu_set_network_type(struct ieee80211_hw *hw, enum nl80211_iftype type)
 {
+        struct rtl_priv *rtlpriv = rtl_priv(hw);
+
         if (_rtl92cu_set_media_status(hw, type))
                 return -EOPNOTSUPP;
-        _rtl92cu_set_check_bssid(hw, type);
+
+        if (rtlpriv->mac80211.link_state == MAC80211_LINKED) {
+                if (type != NL80211_IFTYPE_AP)
+                        rtl92cu_set_check_bssid(hw, true);
+        } else {
+                rtl92cu_set_check_bssid(hw, false);
+        }
+
         return 0;
 }
 
@@ -2058,8 +2041,6 @@ void rtl92cu_update_hal_rate_table(struct ieee80211_hw *hw,
                                (shortgi_rate << 4) | (shortgi_rate);
         }
         rtl_write_dword(rtlpriv, REG_ARFR0 + ratr_index * 4, ratr_value);
-        RT_TRACE(rtlpriv, COMP_RATR, DBG_DMESG, "%x\n",
-                 rtl_read_dword(rtlpriv, REG_ARFR0));
 }
 
 void rtl92cu_update_hal_rate_mask(struct ieee80211_hw *hw, u8 rssi_level)
diff --git a/drivers/net/wireless/rtlwifi/usb.c b/drivers/net/wireless/rtlwifi/usb.c
index 156b52732f3d..5847d6d0881e 100644
--- a/drivers/net/wireless/rtlwifi/usb.c
+++ b/drivers/net/wireless/rtlwifi/usb.c
@@ -851,6 +851,7 @@ static void _rtl_usb_transmit(struct ieee80211_hw *hw, struct sk_buff *skb,
         if (unlikely(!_urb)) {
                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
                          "Can't allocate urb. Drop skb!\n");
+                kfree_skb(skb);
                 return;
         }
         _rtl_submit_tx_urb(hw, _urb);
diff --git a/drivers/pci/rom.c b/drivers/pci/rom.c
index ab886b7ee327..b41ac7756a4b 100644
--- a/drivers/pci/rom.c
+++ b/drivers/pci/rom.c
@@ -100,6 +100,27 @@ size_t pci_get_rom_size(struct pci_dev *pdev, void __iomem *rom, size_t size)
         return min((size_t)(image - rom), size);
 }
 
+static loff_t pci_find_rom(struct pci_dev *pdev, size_t *size)
+{
+        struct resource *res = &pdev->resource[PCI_ROM_RESOURCE];
+        loff_t start;
+
+        /* assign the ROM an address if it doesn't have one */
+        if (res->parent == NULL && pci_assign_resource(pdev, PCI_ROM_RESOURCE))
+                return 0;
+        start = pci_resource_start(pdev, PCI_ROM_RESOURCE);
+        *size = pci_resource_len(pdev, PCI_ROM_RESOURCE);
+
+        if (*size == 0)
+                return 0;
+
+        /* Enable ROM space decodes */
+        if (pci_enable_rom(pdev))
+                return 0;
+
+        return start;
+}
+
 /**
  * pci_map_rom - map a PCI ROM to kernel space
  * @pdev: pointer to pci device struct
@@ -114,21 +135,15 @@ size_t pci_get_rom_size(struct pci_dev *pdev, void __iomem *rom, size_t size)
 void __iomem *pci_map_rom(struct pci_dev *pdev, size_t *size)
 {
         struct resource *res = &pdev->resource[PCI_ROM_RESOURCE];
-        loff_t start;
+        loff_t start = 0;
         void __iomem *rom;
 
         /*
-         * Some devices may provide ROMs via a source other than the BAR
-         */
-        if (pdev->rom && pdev->romlen) {
-                *size = pdev->romlen;
-                return phys_to_virt(pdev->rom);
-        /*
          * IORESOURCE_ROM_SHADOW set on x86, x86_64 and IA64 supports legacy
          * memory map if the VGA enable bit of the Bridge Control register is
          * set for embedded VGA.
          */
-        } else if (res->flags & IORESOURCE_ROM_SHADOW) {
+        if (res->flags & IORESOURCE_ROM_SHADOW) {
                 /* primary video rom always starts here */
                 start = (loff_t)0xC0000;
                 *size = 0x20000; /* cover C000:0 through E000:0 */
@@ -139,21 +154,21 @@ void __iomem *pci_map_rom(struct pci_dev *pdev, size_t *size)
                         return (void __iomem *)(unsigned long)
                                 pci_resource_start(pdev, PCI_ROM_RESOURCE);
                 } else {
-                        /* assign the ROM an address if it doesn't have one */
-                        if (res->parent == NULL &&
-                            pci_assign_resource(pdev,PCI_ROM_RESOURCE))
-                                return NULL;
-                        start = pci_resource_start(pdev, PCI_ROM_RESOURCE);
-                        *size = pci_resource_len(pdev, PCI_ROM_RESOURCE);
-                        if (*size == 0)
-                                return NULL;
-
-                        /* Enable ROM space decodes */
-                        if (pci_enable_rom(pdev))
-                                return NULL;
+                        start = pci_find_rom(pdev, size);
                 }
         }
 
+        /*
+         * Some devices may provide ROMs via a source other than the BAR
+         */
+        if (!start && pdev->rom && pdev->romlen) {
+                *size = pdev->romlen;
+                return phys_to_virt(pdev->rom);
+        }
+
+        if (!start)
+                return NULL;
+
         rom = ioremap(start, *size);
         if (!rom) {
                 /* restore enable if ioremap fails */
diff --git a/drivers/pinctrl/mvebu/pinctrl-mvebu.c b/drivers/pinctrl/mvebu/pinctrl-mvebu.c
index c689c04a4f52..2d2f0a43d36b 100644
--- a/drivers/pinctrl/mvebu/pinctrl-mvebu.c
+++ b/drivers/pinctrl/mvebu/pinctrl-mvebu.c
@@ -620,7 +620,7 @@ int mvebu_pinctrl_probe(struct platform_device *pdev)
 
                 /* special soc specific control */
                 if (ctrl->mpp_get || ctrl->mpp_set) {
-                        if (!ctrl->name || !ctrl->mpp_set || !ctrl->mpp_set) {
+                        if (!ctrl->name || !ctrl->mpp_get || !ctrl->mpp_set) {
                                 dev_err(&pdev->dev, "wrong soc control info\n");
                                 return -EINVAL;
                         }
diff --git a/drivers/pinctrl/pinconf.c b/drivers/pinctrl/pinconf.c
index ac8d382a79bb..d611ecfcbf70 100644
--- a/drivers/pinctrl/pinconf.c
+++ b/drivers/pinctrl/pinconf.c
@@ -622,7 +622,7 @@ static const struct file_operations pinconf_dbg_pinname_fops = {
 static int pinconf_dbg_state_print(struct seq_file *s, void *d)
 {
         if (strlen(dbg_state_name))
-                seq_printf(s, "%s\n", dbg_pinname);
+                seq_printf(s, "%s\n", dbg_state_name);
         else
                 seq_printf(s, "No pin state set\n");
         return 0;
diff --git a/drivers/pinctrl/pinconf.h b/drivers/pinctrl/pinconf.h
index e3ed8cb072a5..bfda73d64eed 100644
--- a/drivers/pinctrl/pinconf.h
+++ b/drivers/pinctrl/pinconf.h
@@ -90,7 +90,7 @@ static inline void pinconf_init_device_debugfs(struct dentry *devroot,
  * pin config.
  */
 
-#ifdef CONFIG_GENERIC_PINCONF
+#if defined(CONFIG_GENERIC_PINCONF) && defined(CONFIG_DEBUG_FS)
 
 void pinconf_generic_dump_pin(struct pinctrl_dev *pctldev,
                               struct seq_file *s, unsigned pin);
diff --git a/drivers/pinctrl/pinctrl-abx500.c b/drivers/pinctrl/pinctrl-abx500.c
index caecdd373061..c542a97c82f3 100644
--- a/drivers/pinctrl/pinctrl-abx500.c
+++ b/drivers/pinctrl/pinctrl-abx500.c
@@ -422,7 +422,7 @@ static u8 abx500_get_mode(struct pinctrl_dev *pctldev, struct gpio_chip *chip,
         }
 
         /* check if pin use AlternateFunction register */
-        if ((af.alt_bit1 == UNUSED) && (af.alt_bit1 == UNUSED))
+        if ((af.alt_bit1 == UNUSED) && (af.alt_bit2 == UNUSED))
                 return mode;
         /*
          * if pin GPIOSEL bit is set and pin supports alternate function,
diff --git a/drivers/pinctrl/pinctrl-at91.c b/drivers/pinctrl/pinctrl-at91.c
index 75933a6aa828..efb7f10e902a 100644
--- a/drivers/pinctrl/pinctrl-at91.c
+++ b/drivers/pinctrl/pinctrl-at91.c
@@ -1277,21 +1277,80 @@ static int alt_gpio_irq_type(struct irq_data *d, unsigned type)
 }
 
 #ifdef CONFIG_PM
+
+static u32 wakeups[MAX_GPIO_BANKS];
+static u32 backups[MAX_GPIO_BANKS];
+
 static int gpio_irq_set_wake(struct irq_data *d, unsigned state)
 {
         struct at91_gpio_chip *at91_gpio = irq_data_get_irq_chip_data(d);
         unsigned        bank = at91_gpio->pioc_idx;
+        unsigned mask = 1 << d->hwirq;
 
         if (unlikely(bank >= MAX_GPIO_BANKS))
                 return -EINVAL;
 
+        if (state)
+                wakeups[bank] |= mask;
+        else
+                wakeups[bank] &= ~mask;
+
         irq_set_irq_wake(at91_gpio->pioc_virq, state);
 
         return 0;
 }
+
+void at91_pinctrl_gpio_suspend(void)
+{
+        int i;
+
+        for (i = 0; i < gpio_banks; i++) {
+                void __iomem  *pio;
+
+                if (!gpio_chips[i])
+                        continue;
+
+                pio = gpio_chips[i]->regbase;
+
+                backups[i] = __raw_readl(pio + PIO_IMR);
+                __raw_writel(backups[i], pio + PIO_IDR);
+                __raw_writel(wakeups[i], pio + PIO_IER);
+
+                if (!wakeups[i]) {
+                        clk_unprepare(gpio_chips[i]->clock);
+                        clk_disable(gpio_chips[i]->clock);
+                } else {
+                        printk(KERN_DEBUG "GPIO-%c may wake for %08x\n",
+                               'A'+i, wakeups[i]);
+                }
+        }
+}
+
+void at91_pinctrl_gpio_resume(void)
+{
+        int i;
+
+        for (i = 0; i < gpio_banks; i++) {
+                void __iomem  *pio;
+
+                if (!gpio_chips[i])
+                        continue;
+
+                pio = gpio_chips[i]->regbase;
+
+                if (!wakeups[i]) {
+                        if (clk_prepare(gpio_chips[i]->clock) == 0)
+                                clk_enable(gpio_chips[i]->clock);
+                }
+
+                __raw_writel(wakeups[i], pio + PIO_IDR);
+                __raw_writel(backups[i], pio + PIO_IER);
+        }
+}
+
 #else
 #define gpio_irq_set_wake       NULL
-#endif
+#endif /* CONFIG_PM */
 
 static struct irq_chip gpio_irqchip = {
         .name           = "GPIO",
diff --git a/drivers/pinctrl/pinmux.c b/drivers/pinctrl/pinmux.c
index 1a00658b3ea0..bd83c8b01cd1 100644
--- a/drivers/pinctrl/pinmux.c
+++ b/drivers/pinctrl/pinmux.c
@@ -194,6 +194,11 @@ static const char *pin_free(struct pinctrl_dev *pctldev, int pin,
         }
 
         if (!gpio_range) {
+                /*
+                 * A pin should not be freed more times than allocated.
+                 */
+                if (WARN_ON(!desc->mux_usecount))
+                        return NULL;
                 desc->mux_usecount--;
                 if (desc->mux_usecount)
                         return NULL;
diff --git a/drivers/rtc/rtc-at91rm9200.c b/drivers/rtc/rtc-at91rm9200.c
index 434ebc3a99dc..0a9f27e094ea 100644
--- a/drivers/rtc/rtc-at91rm9200.c
+++ b/drivers/rtc/rtc-at91rm9200.c
@@ -44,6 +44,7 @@ static DECLARE_COMPLETION(at91_rtc_updated);
 static unsigned int at91_alarm_year = AT91_RTC_EPOCH;
 static void __iomem *at91_rtc_regs;
 static int irq;
+static u32 at91_rtc_imr;
 
 /*
  * Decode time/date into rtc_time structure
@@ -108,9 +109,11 @@ static int at91_rtc_settime(struct device *dev, struct rtc_time *tm)
         cr = at91_rtc_read(AT91_RTC_CR);
         at91_rtc_write(AT91_RTC_CR, cr | AT91_RTC_UPDCAL | AT91_RTC_UPDTIM);
 
+        at91_rtc_imr |= AT91_RTC_ACKUPD;
         at91_rtc_write(AT91_RTC_IER, AT91_RTC_ACKUPD);
         wait_for_completion(&at91_rtc_updated); /* wait for ACKUPD interrupt */
         at91_rtc_write(AT91_RTC_IDR, AT91_RTC_ACKUPD);
+        at91_rtc_imr &= ~AT91_RTC_ACKUPD;
 
         at91_rtc_write(AT91_RTC_TIMR,
                           bin2bcd(tm->tm_sec) << 0
@@ -142,7 +145,7 @@ static int at91_rtc_readalarm(struct device *dev, struct rtc_wkalrm *alrm)
         tm->tm_yday = rtc_year_days(tm->tm_mday, tm->tm_mon, tm->tm_year);
         tm->tm_year = at91_alarm_year - 1900;
 
-        alrm->enabled = (at91_rtc_read(AT91_RTC_IMR) & AT91_RTC_ALARM)
+        alrm->enabled = (at91_rtc_imr & AT91_RTC_ALARM)
                         ? 1 : 0;
 
         dev_dbg(dev, "%s(): %4d-%02d-%02d %02d:%02d:%02d\n", __func__,
@@ -168,6 +171,7 @@ static int at91_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
         tm.tm_sec = alrm->time.tm_sec;
 
         at91_rtc_write(AT91_RTC_IDR, AT91_RTC_ALARM);
+        at91_rtc_imr &= ~AT91_RTC_ALARM;
         at91_rtc_write(AT91_RTC_TIMALR,
                   bin2bcd(tm.tm_sec) << 0
                 | bin2bcd(tm.tm_min) << 8
@@ -180,6 +184,7 @@ static int at91_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
 
         if (alrm->enabled) {
                 at91_rtc_write(AT91_RTC_SCCR, AT91_RTC_ALARM);
+                at91_rtc_imr |= AT91_RTC_ALARM;
                 at91_rtc_write(AT91_RTC_IER, AT91_RTC_ALARM);
         }
 
@@ -196,9 +201,12 @@ static int at91_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
 
         if (enabled) {
                 at91_rtc_write(AT91_RTC_SCCR, AT91_RTC_ALARM);
+                at91_rtc_imr |= AT91_RTC_ALARM;
                 at91_rtc_write(AT91_RTC_IER, AT91_RTC_ALARM);
-        } else
+        } else {
                 at91_rtc_write(AT91_RTC_IDR, AT91_RTC_ALARM);
+                at91_rtc_imr &= ~AT91_RTC_ALARM;
+        }
 
         return 0;
 }
@@ -207,12 +215,10 @@ static int at91_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
  */
 static int at91_rtc_proc(struct device *dev, struct seq_file *seq)
 {
-        unsigned long imr = at91_rtc_read(AT91_RTC_IMR);
-
         seq_printf(seq, "update_IRQ\t: %s\n",
-                        (imr & AT91_RTC_ACKUPD) ? "yes" : "no");
+                        (at91_rtc_imr & AT91_RTC_ACKUPD) ? "yes" : "no");
         seq_printf(seq, "periodic_IRQ\t: %s\n",
-                        (imr & AT91_RTC_SECEV) ? "yes" : "no");
+                        (at91_rtc_imr & AT91_RTC_SECEV) ? "yes" : "no");
 
         return 0;
 }
@@ -227,7 +233,7 @@ static irqreturn_t at91_rtc_interrupt(int irq, void *dev_id)
         unsigned int rtsr;
         unsigned long events = 0;
 
-        rtsr = at91_rtc_read(AT91_RTC_SR) & at91_rtc_read(AT91_RTC_IMR);
+        rtsr = at91_rtc_read(AT91_RTC_SR) & at91_rtc_imr;
         if (rtsr) {             /* this interrupt is shared!  Is it ours? */
                 if (rtsr & AT91_RTC_ALARM)
                         events |= (RTC_AF | RTC_IRQF);
@@ -291,6 +297,7 @@ static int __init at91_rtc_probe(struct platform_device *pdev)
         at91_rtc_write(AT91_RTC_IDR, AT91_RTC_ACKUPD | AT91_RTC_ALARM |
                                         AT91_RTC_SECEV | AT91_RTC_TIMEV |
                                         AT91_RTC_CALEV);
+        at91_rtc_imr = 0;
 
         ret = request_irq(irq, at91_rtc_interrupt,
                                 IRQF_SHARED,
@@ -329,6 +336,7 @@ static int __exit at91_rtc_remove(struct platform_device *pdev)
         at91_rtc_write(AT91_RTC_IDR, AT91_RTC_ACKUPD | AT91_RTC_ALARM |
                                         AT91_RTC_SECEV | AT91_RTC_TIMEV |
                                         AT91_RTC_CALEV);
+        at91_rtc_imr = 0;
         free_irq(irq, pdev);
 
         rtc_device_unregister(rtc);
@@ -341,31 +349,35 @@ static int __exit at91_rtc_remove(struct platform_device *pdev)
 
 /* AT91RM9200 RTC Power management control */
 
-static u32 at91_rtc_imr;
+static u32 at91_rtc_bkpimr;
+
 
 static int at91_rtc_suspend(struct device *dev)
 {
         /* this IRQ is shared with DBGU and other hardware which isn't
          * necessarily doing PM like we are...
          */
-        at91_rtc_imr = at91_rtc_read(AT91_RTC_IMR)
-                        & (AT91_RTC_ALARM|AT91_RTC_SECEV);
-        if (at91_rtc_imr) {
-                if (device_may_wakeup(dev))
+        at91_rtc_bkpimr = at91_rtc_imr & (AT91_RTC_ALARM|AT91_RTC_SECEV);
+        if (at91_rtc_bkpimr) {
+                if (device_may_wakeup(dev)) {
                         enable_irq_wake(irq);
-                else
-                        at91_rtc_write(AT91_RTC_IDR, at91_rtc_imr);
-        }
+                } else {
+                        at91_rtc_write(AT91_RTC_IDR, at91_rtc_bkpimr);
+                        at91_rtc_imr &= ~at91_rtc_bkpimr;
+                }
+}
         return 0;
 }
 
 static int at91_rtc_resume(struct device *dev)
 {
-        if (at91_rtc_imr) {
-                if (device_may_wakeup(dev))
+        if (at91_rtc_bkpimr) {
+                if (device_may_wakeup(dev)) {
                         disable_irq_wake(irq);
-                else
-                        at91_rtc_write(AT91_RTC_IER, at91_rtc_imr);
+                } else {
+                        at91_rtc_imr |= at91_rtc_bkpimr;
+                        at91_rtc_write(AT91_RTC_IER, at91_rtc_bkpimr);
+                }
         }
         return 0;
 }
diff --git a/drivers/rtc/rtc-at91rm9200.h b/drivers/rtc/rtc-at91rm9200.h
index da1945e5f714..5f940b6844cb 100644
--- a/drivers/rtc/rtc-at91rm9200.h
+++ b/drivers/rtc/rtc-at91rm9200.h
@@ -64,7 +64,6 @@
 #define AT91_RTC_SCCR           0x1c                    /* Status Clear Command Register */
 #define AT91_RTC_IER            0x20                    /* Interrupt Enable Register */
 #define AT91_RTC_IDR            0x24                    /* Interrupt Disable Register */
-#define AT91_RTC_IMR            0x28                    /* Interrupt Mask Register */
 
 #define AT91_RTC_VER            0x2c                    /* Valid Entry Register */
 #define         AT91_RTC_NVTIM          (1 <<  0)               /* Non valid Time */
diff --git a/drivers/rtc/rtc-da9052.c b/drivers/rtc/rtc-da9052.c
index 0dde688ca09b..969abbad7fe3 100644
--- a/drivers/rtc/rtc-da9052.c
+++ b/drivers/rtc/rtc-da9052.c
@@ -239,11 +239,9 @@ static int da9052_rtc_probe(struct platform_device *pdev)
 
         rtc->da9052 = dev_get_drvdata(pdev->dev.parent);
         platform_set_drvdata(pdev, rtc);
-        rtc->irq = platform_get_irq_byname(pdev, "ALM");
-        ret = devm_request_threaded_irq(&pdev->dev, rtc->irq, NULL,
-                                da9052_rtc_irq,
-                                IRQF_TRIGGER_LOW | IRQF_ONESHOT,
-                                "ALM", rtc);
+        rtc->irq =  DA9052_IRQ_ALARM;
+        ret = da9052_request_irq(rtc->da9052, rtc->irq, "ALM",
+                                da9052_rtc_irq, rtc);
         if (ret != 0) {
                 rtc_err(rtc->da9052, "irq registration failed: %d\n", ret);
                 return ret;
diff --git a/drivers/s390/block/scm_blk.c b/drivers/s390/block/scm_blk.c
index 9978ad4433cb..5ac9c935c151 100644
--- a/drivers/s390/block/scm_blk.c
+++ b/drivers/s390/block/scm_blk.c
@@ -135,6 +135,11 @@ static const struct block_device_operations scm_blk_devops = {
         .release = scm_release,
 };
 
+static bool scm_permit_request(struct scm_blk_dev *bdev, struct request *req)
+{
+        return rq_data_dir(req) != WRITE || bdev->state != SCM_WR_PROHIBIT;
+}
+
 static void scm_request_prepare(struct scm_request *scmrq)
 {
         struct scm_blk_dev *bdev = scmrq->bdev;
@@ -195,14 +200,18 @@ void scm_request_requeue(struct scm_request *scmrq)
 
         scm_release_cluster(scmrq);
         blk_requeue_request(bdev->rq, scmrq->request);
+        atomic_dec(&bdev->queued_reqs);
         scm_request_done(scmrq);
         scm_ensure_queue_restart(bdev);
 }
 
 void scm_request_finish(struct scm_request *scmrq)
 {
+        struct scm_blk_dev *bdev = scmrq->bdev;
+
         scm_release_cluster(scmrq);
         blk_end_request_all(scmrq->request, scmrq->error);
+        atomic_dec(&bdev->queued_reqs);
         scm_request_done(scmrq);
 }
 
@@ -218,6 +227,10 @@ static void scm_blk_request(struct request_queue *rq)
                 if (req->cmd_type != REQ_TYPE_FS)
                         continue;
 
+                if (!scm_permit_request(bdev, req)) {
+                        scm_ensure_queue_restart(bdev);
+                        return;
+                }
                 scmrq = scm_request_fetch();
                 if (!scmrq) {
                         SCM_LOG(5, "no request");
@@ -231,11 +244,13 @@ static void scm_blk_request(struct request_queue *rq)
                         return;
                 }
                 if (scm_need_cluster_request(scmrq)) {
+                        atomic_inc(&bdev->queued_reqs);
                         blk_start_request(req);
                         scm_initiate_cluster_request(scmrq);
                         return;
                 }
                 scm_request_prepare(scmrq);
+                atomic_inc(&bdev->queued_reqs);
                 blk_start_request(req);
 
                 ret = scm_start_aob(scmrq->aob);
@@ -244,7 +259,6 @@ static void scm_blk_request(struct request_queue *rq)
                         scm_request_requeue(scmrq);
                         return;
                 }
-                atomic_inc(&bdev->queued_reqs);
         }
 }
 
@@ -280,6 +294,38 @@ void scm_blk_irq(struct scm_device *scmdev, void *data, int error)
         tasklet_hi_schedule(&bdev->tasklet);
 }
 
+static void scm_blk_handle_error(struct scm_request *scmrq)
+{
+        struct scm_blk_dev *bdev = scmrq->bdev;
+        unsigned long flags;
+
+        if (scmrq->error != -EIO)
+                goto restart;
+
+        /* For -EIO the response block is valid. */
+        switch (scmrq->aob->response.eqc) {
+        case EQC_WR_PROHIBIT:
+                spin_lock_irqsave(&bdev->lock, flags);
+                if (bdev->state != SCM_WR_PROHIBIT)
+                        pr_info("%lu: Write access to the SCM increment is suspended\n",
+                                (unsigned long) bdev->scmdev->address);
+                bdev->state = SCM_WR_PROHIBIT;
+                spin_unlock_irqrestore(&bdev->lock, flags);
+                goto requeue;
+        default:
+                break;
+        }
+
+restart:
+        if (!scm_start_aob(scmrq->aob))
+                return;
+
+requeue:
+        spin_lock_irqsave(&bdev->rq_lock, flags);
+        scm_request_requeue(scmrq);
+        spin_unlock_irqrestore(&bdev->rq_lock, flags);
+}
+
 static void scm_blk_tasklet(struct scm_blk_dev *bdev)
 {
         struct scm_request *scmrq;
@@ -293,11 +339,8 @@ static void scm_blk_tasklet(struct scm_blk_dev *bdev)
                 spin_unlock_irqrestore(&bdev->lock, flags);
 
                 if (scmrq->error && scmrq->retries-- > 0) {
-                        if (scm_start_aob(scmrq->aob)) {
-                                spin_lock_irqsave(&bdev->rq_lock, flags);
-                                scm_request_requeue(scmrq);
-                                spin_unlock_irqrestore(&bdev->rq_lock, flags);
-                        }
+                        scm_blk_handle_error(scmrq);
+
                         /* Request restarted or requeued, handle next. */
                         spin_lock_irqsave(&bdev->lock, flags);
                         continue;
@@ -310,7 +353,6 @@ static void scm_blk_tasklet(struct scm_blk_dev *bdev)
                 }
 
                 scm_request_finish(scmrq);
-                atomic_dec(&bdev->queued_reqs);
                 spin_lock_irqsave(&bdev->lock, flags);
         }
         spin_unlock_irqrestore(&bdev->lock, flags);
@@ -332,6 +374,7 @@ int scm_blk_dev_setup(struct scm_blk_dev *bdev, struct scm_device *scmdev)
         }
 
         bdev->scmdev = scmdev;
+        bdev->state = SCM_OPER;
         spin_lock_init(&bdev->rq_lock);
         spin_lock_init(&bdev->lock);
         INIT_LIST_HEAD(&bdev->finished_requests);
@@ -396,6 +439,18 @@ void scm_blk_dev_cleanup(struct scm_blk_dev *bdev)
         put_disk(bdev->gendisk);
 }
 
+void scm_blk_set_available(struct scm_blk_dev *bdev)
+{
+        unsigned long flags;
+
+        spin_lock_irqsave(&bdev->lock, flags);
+        if (bdev->state == SCM_WR_PROHIBIT)
+                pr_info("%lu: Write access to the SCM increment is restored\n",
+                        (unsigned long) bdev->scmdev->address);
+        bdev->state = SCM_OPER;
+        spin_unlock_irqrestore(&bdev->lock, flags);
+}
+
 static int __init scm_blk_init(void)
 {
         int ret = -EINVAL;
diff --git a/drivers/s390/block/scm_blk.h b/drivers/s390/block/scm_blk.h
index 3c1ccf494647..8b387b32fd62 100644
--- a/drivers/s390/block/scm_blk.h
+++ b/drivers/s390/block/scm_blk.h
@@ -21,6 +21,7 @@ struct scm_blk_dev {
         spinlock_t rq_lock;     /* guard the request queue */
         spinlock_t lock;        /* guard the rest of the blockdev */
         atomic_t queued_reqs;
+        enum {SCM_OPER, SCM_WR_PROHIBIT} state;
         struct list_head finished_requests;
 #ifdef CONFIG_SCM_BLOCK_CLUSTER_WRITE
         struct list_head cluster_list;
@@ -48,6 +49,7 @@ struct scm_request {
 
 int scm_blk_dev_setup(struct scm_blk_dev *, struct scm_device *);
 void scm_blk_dev_cleanup(struct scm_blk_dev *);
+void scm_blk_set_available(struct scm_blk_dev *);
 void scm_blk_irq(struct scm_device *, void *, int);
 
 void scm_request_finish(struct scm_request *);
diff --git a/drivers/s390/block/scm_drv.c b/drivers/s390/block/scm_drv.c
index 9fa0a908607b..5f6180d6ff08 100644
--- a/drivers/s390/block/scm_drv.c
+++ b/drivers/s390/block/scm_drv.c
@@ -13,12 +13,23 @@
 #include <asm/eadm.h>
 #include "scm_blk.h"
 
-static void notify(struct scm_device *scmdev)
+static void scm_notify(struct scm_device *scmdev, enum scm_event event)
 {
-        pr_info("%lu: The capabilities of the SCM increment changed\n",
-                (unsigned long) scmdev->address);
-        SCM_LOG(2, "State changed");
-        SCM_LOG_STATE(2, scmdev);
+        struct scm_blk_dev *bdev = dev_get_drvdata(&scmdev->dev);
+
+        switch (event) {
+        case SCM_CHANGE:
+                pr_info("%lu: The capabilities of the SCM increment changed\n",
+                        (unsigned long) scmdev->address);
+                SCM_LOG(2, "State changed");
+                SCM_LOG_STATE(2, scmdev);
+                break;
+        case SCM_AVAIL:
+                SCM_LOG(2, "Increment available");
+                SCM_LOG_STATE(2, scmdev);
+                scm_blk_set_available(bdev);
+                break;
+        }
 }
 
 static int scm_probe(struct scm_device *scmdev)
@@ -64,7 +75,7 @@ static struct scm_driver scm_drv = {
                 .name = "scm_block",
                 .owner = THIS_MODULE,
         },
-        .notify = notify,
+        .notify = scm_notify,
         .probe = scm_probe,
         .remove = scm_remove,
         .handler = scm_blk_irq,
diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c
index 30a2255389e5..cd798386b622 100644
--- a/drivers/s390/char/sclp_cmd.c
+++ b/drivers/s390/char/sclp_cmd.c
@@ -627,6 +627,8 @@ static int __init sclp_detect_standby_memory(void)
         struct read_storage_sccb *sccb;
         int i, id, assigned, rc;
 
+        if (OLDMEM_BASE) /* No standby memory in kdump mode */
+                return 0;
         if (!early_read_info_sccb_valid)
                 return 0;
         if ((sclp_facilities & 0xe00000000000ULL) != 0xe00000000000ULL)
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
index 31ceef1beb8b..e16c553f6556 100644
--- a/drivers/s390/cio/chsc.c
+++ b/drivers/s390/cio/chsc.c
@@ -433,6 +433,20 @@ static void chsc_process_sei_scm_change(struct chsc_sei_nt0_area *sei_area)
                               " failed (rc=%d).\n", ret);
 }
 
+static void chsc_process_sei_scm_avail(struct chsc_sei_nt0_area *sei_area)
+{
+        int ret;
+
+        CIO_CRW_EVENT(4, "chsc: scm available information\n");
+        if (sei_area->rs != 7)
+                return;
+
+        ret = scm_process_availability_information();
+        if (ret)
+                CIO_CRW_EVENT(0, "chsc: process availability information"
+                              " failed (rc=%d).\n", ret);
+}
+
 static void chsc_process_sei_nt2(struct chsc_sei_nt2_area *sei_area)
 {
         switch (sei_area->cc) {
@@ -468,6 +482,9 @@ static void chsc_process_sei_nt0(struct chsc_sei_nt0_area *sei_area)
         case 12: /* scm change notification */
                 chsc_process_sei_scm_change(sei_area);
                 break;
+        case 14: /* scm available notification */
+                chsc_process_sei_scm_avail(sei_area);
+                break;
         default: /* other stuff */
                 CIO_CRW_EVENT(2, "chsc: sei nt0 unhandled cc=%d\n",
                               sei_area->cc);
diff --git a/drivers/s390/cio/chsc.h b/drivers/s390/cio/chsc.h
index 227e05f674b3..349d5fc47196 100644
--- a/drivers/s390/cio/chsc.h
+++ b/drivers/s390/cio/chsc.h
@@ -156,8 +156,10 @@ int chsc_scm_info(struct chsc_scm_info *scm_area, u64 token);
 
 #ifdef CONFIG_SCM_BUS
 int scm_update_information(void);
+int scm_process_availability_information(void);
 #else /* CONFIG_SCM_BUS */
 static inline int scm_update_information(void) { return 0; }
+static inline int scm_process_availability_information(void) { return 0; }
 #endif /* CONFIG_SCM_BUS */
 
 
diff --git a/drivers/s390/cio/scm.c b/drivers/s390/cio/scm.c
index bcf20f3aa51b..46ec25632e8b 100644
--- a/drivers/s390/cio/scm.c
+++ b/drivers/s390/cio/scm.c
@@ -211,7 +211,7 @@ static void scmdev_update(struct scm_device *scmdev, struct sale *sale)
                 goto out;
         scmdrv = to_scm_drv(scmdev->dev.driver);
         if (changed && scmdrv->notify)
-                scmdrv->notify(scmdev);
+                scmdrv->notify(scmdev, SCM_CHANGE);
 out:
         device_unlock(&scmdev->dev);
         if (changed)
@@ -297,6 +297,22 @@ int scm_update_information(void)
         return ret;
 }
 
+static int scm_dev_avail(struct device *dev, void *unused)
+{
+        struct scm_driver *scmdrv = to_scm_drv(dev->driver);
+        struct scm_device *scmdev = to_scm_dev(dev);
+
+        if (dev->driver && scmdrv->notify)
+                scmdrv->notify(scmdev, SCM_AVAIL);
+
+        return 0;
+}
+
+int scm_process_availability_information(void)
+{
+        return bus_for_each_dev(&scm_bus_type, NULL, NULL, scm_dev_avail);
+}
+
 static int __init scm_init(void)
 {
         int ret;
diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h
index d87961d4c0de..8c0622399fcd 100644
--- a/drivers/s390/net/qeth_core.h
+++ b/drivers/s390/net/qeth_core.h
@@ -916,6 +916,7 @@ int qeth_send_control_data(struct qeth_card *, int, struct qeth_cmd_buffer *,
         void *reply_param);
 int qeth_get_priority_queue(struct qeth_card *, struct sk_buff *, int, int);
 int qeth_get_elements_no(struct qeth_card *, void *, struct sk_buff *, int);
+int qeth_get_elements_for_frags(struct sk_buff *);
 int qeth_do_send_packet_fast(struct qeth_card *, struct qeth_qdio_out_q *,
                         struct sk_buff *, struct qeth_hdr *, int, int, int);
 int qeth_do_send_packet(struct qeth_card *, struct qeth_qdio_out_q *,
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 0d8cdff81813..0d73a999983d 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -3679,6 +3679,25 @@ int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
 }
 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
 
+int qeth_get_elements_for_frags(struct sk_buff *skb)
+{
+        int cnt, length, e, elements = 0;
+        struct skb_frag_struct *frag;
+        char *data;
+
+        for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
+                frag = &skb_shinfo(skb)->frags[cnt];
+                data = (char *)page_to_phys(skb_frag_page(frag)) +
+                        frag->page_offset;
+                length = frag->size;
+                e = PFN_UP((unsigned long)data + length - 1) -
+                        PFN_DOWN((unsigned long)data);
+                elements += e;
+        }
+        return elements;
+}
+EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
+
 int qeth_get_elements_no(struct qeth_card *card, void *hdr,
                      struct sk_buff *skb, int elems)
 {
@@ -3686,7 +3705,8 @@ int qeth_get_elements_no(struct qeth_card *card, void *hdr,
         int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) -
                 PFN_DOWN((unsigned long)skb->data);
 
-        elements_needed += skb_shinfo(skb)->nr_frags;
+        elements_needed += qeth_get_elements_for_frags(skb);
+
         if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
                         "(Number=%d / Length=%d). Discarded.\n",
@@ -3771,12 +3791,23 @@ static inline void __qeth_fill_buffer(struct sk_buff *skb,
 
         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
                 frag = &skb_shinfo(skb)->frags[cnt];
-                buffer->element[element].addr = (char *)
-                        page_to_phys(skb_frag_page(frag))
-                        + frag->page_offset;
-                buffer->element[element].length = frag->size;
-                buffer->element[element].eflags = SBAL_EFLAGS_MIDDLE_FRAG;
-                element++;
+                data = (char *)page_to_phys(skb_frag_page(frag)) +
+                        frag->page_offset;
+                length = frag->size;
+                while (length > 0) {
+                        length_here = PAGE_SIZE -
+                                ((unsigned long) data % PAGE_SIZE);
+                        if (length < length_here)
+                                length_here = length;
+
+                        buffer->element[element].addr = data;
+                        buffer->element[element].length = length_here;
+                        buffer->element[element].eflags =
+                                SBAL_EFLAGS_MIDDLE_FRAG;
+                        length -= length_here;
+                        data += length_here;
+                        element++;
+                }
         }
 
         if (buffer->element[element - 1].eflags)
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
index 091ca0efa1c5..8710337dab3e 100644
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -623,7 +623,7 @@ static int qeth_l3_send_setrouting(struct qeth_card *card,
         return rc;
 }
 
-static void qeth_l3_correct_routing_type(struct qeth_card *card,
+static int qeth_l3_correct_routing_type(struct qeth_card *card,
                 enum qeth_routing_types *type, enum qeth_prot_versions prot)
 {
         if (card->info.type == QETH_CARD_TYPE_IQD) {
@@ -632,7 +632,7 @@ static void qeth_l3_correct_routing_type(struct qeth_card *card,
                 case PRIMARY_CONNECTOR:
                 case SECONDARY_CONNECTOR:
                 case MULTICAST_ROUTER:
-                        return;
+                        return 0;
                 default:
                         goto out_inval;
                 }
@@ -641,17 +641,18 @@ static void qeth_l3_correct_routing_type(struct qeth_card *card,
                 case NO_ROUTER:
                 case PRIMARY_ROUTER:
                 case SECONDARY_ROUTER:
-                        return;
+                        return 0;
                 case MULTICAST_ROUTER:
                         if (qeth_is_ipafunc_supported(card, prot,
                                                       IPA_OSA_MC_ROUTER))
-                                return;
+                                return 0;
                 default:
                         goto out_inval;
                 }
         }
 out_inval:
         *type = NO_ROUTER;
+        return -EINVAL;
 }
 
 int qeth_l3_setrouting_v4(struct qeth_card *card)
@@ -660,8 +661,10 @@ int qeth_l3_setrouting_v4(struct qeth_card *card)
 
         QETH_CARD_TEXT(card, 3, "setrtg4");
 
-        qeth_l3_correct_routing_type(card, &card->options.route4.type,
+        rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
                                   QETH_PROT_IPV4);
+        if (rc)
+                return rc;
 
         rc = qeth_l3_send_setrouting(card, card->options.route4.type,
                                   QETH_PROT_IPV4);
@@ -683,8 +686,10 @@ int qeth_l3_setrouting_v6(struct qeth_card *card)
 
         if (!qeth_is_supported(card, IPA_IPV6))
                 return 0;
-        qeth_l3_correct_routing_type(card, &card->options.route6.type,
+        rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
                                   QETH_PROT_IPV6);
+        if (rc)
+                return rc;
 
         rc = qeth_l3_send_setrouting(card, card->options.route6.type,
                                   QETH_PROT_IPV6);
@@ -2898,7 +2903,9 @@ static inline int qeth_l3_tso_elements(struct sk_buff *skb)
                 tcp_hdr(skb)->doff * 4;
         int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data);
         int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd);
-        elements += skb_shinfo(skb)->nr_frags;
+
+        elements += qeth_get_elements_for_frags(skb);
+
         return elements;
 }
 
@@ -3348,7 +3355,6 @@ static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
                 rc = -ENODEV;
                 goto out_remove;
         }
-        qeth_trace_features(card);
 
         if (!card->dev && qeth_l3_setup_netdev(card)) {
                 rc = -ENODEV;
@@ -3425,6 +3431,7 @@ contin:
                 qeth_l3_set_multicast_list(card->dev);
                 rtnl_unlock();
         }
+        qeth_trace_features(card);
         /* let user_space know that device is online */
         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
         mutex_unlock(&card->conf_mutex);
diff --git a/drivers/s390/net/qeth_l3_sys.c b/drivers/s390/net/qeth_l3_sys.c
index ebc379486267..e70af2406ff9 100644
--- a/drivers/s390/net/qeth_l3_sys.c
+++ b/drivers/s390/net/qeth_l3_sys.c
@@ -87,6 +87,8 @@ static ssize_t qeth_l3_dev_route_store(struct qeth_card *card,
                         rc = qeth_l3_setrouting_v6(card);
         }
 out:
+        if (rc)
+                route->type = old_route_type;
         mutex_unlock(&card->conf_mutex);
         return rc ? rc : count;
 }
diff --git a/drivers/staging/comedi/drivers/s626.c b/drivers/staging/comedi/drivers/s626.c
index 81a1fe661579..71a73ec5af8d 100644
--- a/drivers/staging/comedi/drivers/s626.c
+++ b/drivers/staging/comedi/drivers/s626.c
@@ -1483,7 +1483,7 @@ static int s626_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
         case TRIG_NONE:
                 /*  continous acquisition */
                 devpriv->ai_continous = 1;
-                devpriv->ai_sample_count = 0;
+                devpriv->ai_sample_count = 1;
                 break;
         }
 
diff --git a/drivers/staging/zcache/Kconfig b/drivers/staging/zcache/Kconfig
index 73582705e8c5..5c3714530961 100644
--- a/drivers/staging/zcache/Kconfig
+++ b/drivers/staging/zcache/Kconfig
@@ -15,7 +15,7 @@ config RAMSTER
         depends on CONFIGFS_FS=y && SYSFS=y && !HIGHMEM && ZCACHE=y
         depends on NET
         # must ensure struct page is 8-byte aligned
-        select HAVE_ALIGNED_STRUCT_PAGE if !64_BIT
+        select HAVE_ALIGNED_STRUCT_PAGE if !64BIT
         default n
         help
           RAMster allows RAM on other machines in a cluster to be utilized
diff --git a/drivers/target/iscsi/iscsi_target_auth.c b/drivers/target/iscsi/iscsi_target_auth.c
index db0cf7c8adde..a0fc7b9eea65 100644
--- a/drivers/target/iscsi/iscsi_target_auth.c
+++ b/drivers/target/iscsi/iscsi_target_auth.c
@@ -166,6 +166,7 @@ static int chap_server_compute_md5(
 {
         char *endptr;
         unsigned long id;
+        unsigned char id_as_uchar;
         unsigned char digest[MD5_SIGNATURE_SIZE];
         unsigned char type, response[MD5_SIGNATURE_SIZE * 2 + 2];
         unsigned char identifier[10], *challenge = NULL;
@@ -355,7 +356,9 @@ static int chap_server_compute_md5(
                 goto out;
         }
 
-        sg_init_one(&sg, &id, 1);
+        /* To handle both endiannesses */
+        id_as_uchar = id;
+        sg_init_one(&sg, &id_as_uchar, 1);
         ret = crypto_hash_update(&desc, &sg, 1);
         if (ret < 0) {
                 pr_err("crypto_hash_update() failed for id\n");
diff --git a/drivers/target/target_core_file.h b/drivers/target/target_core_file.h
index bc02b018ae46..37ffc5bd2399 100644
--- a/drivers/target/target_core_file.h
+++ b/drivers/target/target_core_file.h
@@ -7,7 +7,7 @@
 #define FD_DEVICE_QUEUE_DEPTH   32
 #define FD_MAX_DEVICE_QUEUE_DEPTH 128
 #define FD_BLOCKSIZE            512
-#define FD_MAX_SECTORS          1024
+#define FD_MAX_SECTORS          2048
 
 #define RRF_EMULATE_CDB         0x01
 #define RRF_GOT_LBA             0x02
diff --git a/drivers/target/target_core_pscsi.c b/drivers/target/target_core_pscsi.c
index 82e78d72fdb6..e992b27aa090 100644
--- a/drivers/target/target_core_pscsi.c
+++ b/drivers/target/target_core_pscsi.c
@@ -883,7 +883,14 @@ pscsi_map_sg(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents,
                 pr_debug("PSCSI: i: %d page: %p len: %d off: %d\n", i,
                         page, len, off);
 
-                while (len > 0 && data_len > 0) {
+                /*
+                 * We only have one page of data in each sg element,
+                 * we can not cross a page boundary.
+                 */
+                if (off + len > PAGE_SIZE)
+                        goto fail;
+
+                if (len > 0 && data_len > 0) {
                         bytes = min_t(unsigned int, len, PAGE_SIZE - off);
                         bytes = min(bytes, data_len);
 
@@ -940,9 +947,7 @@ pscsi_map_sg(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents,
                                 bio = NULL;
                         }
 
-                        len -= bytes;
                         data_len -= bytes;
-                        off = 0;
                 }
         }
 
diff --git a/drivers/target/target_core_sbc.c b/drivers/target/target_core_sbc.c
index 290230de2c53..60d4b5185f32 100644
--- a/drivers/target/target_core_sbc.c
+++ b/drivers/target/target_core_sbc.c
@@ -464,8 +464,11 @@ sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops)
                 break;
         case SYNCHRONIZE_CACHE:
         case SYNCHRONIZE_CACHE_16:
-                if (!ops->execute_sync_cache)
-                        return TCM_UNSUPPORTED_SCSI_OPCODE;
+                if (!ops->execute_sync_cache) {
+                        size = 0;
+                        cmd->execute_cmd = sbc_emulate_noop;
+                        break;
+                }
 
                 /*
                  * Extract LBA and range to be flushed for emulated SYNCHRONIZE_CACHE
diff --git a/drivers/target/target_core_tpg.c b/drivers/target/target_core_tpg.c
index 9169d6a5d7e4..aac9d2727e3c 100644
--- a/drivers/target/target_core_tpg.c
+++ b/drivers/target/target_core_tpg.c
@@ -711,7 +711,8 @@ int core_tpg_register(
 
         if (se_tpg->se_tpg_type == TRANSPORT_TPG_TYPE_NORMAL) {
                 if (core_tpg_setup_virtual_lun0(se_tpg) < 0) {
-                        kfree(se_tpg);
+                        array_free(se_tpg->tpg_lun_list,
+                                   TRANSPORT_MAX_LUNS_PER_TPG);
                         return -ENOMEM;
                 }
         }
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 2030b608136d..3243ea790eab 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -1139,8 +1139,10 @@ target_setup_cmd_from_cdb(struct se_cmd *cmd, unsigned char *cdb)
                 return ret;
 
         ret = target_check_reservation(cmd);
-        if (ret)
+        if (ret) {
+                cmd->scsi_status = SAM_STAT_RESERVATION_CONFLICT;
                 return ret;
+        }
 
         ret = dev->transport->parse_cdb(cmd);
         if (ret)
diff --git a/drivers/thermal/dove_thermal.c b/drivers/thermal/dove_thermal.c
index 7b0bfa0e7a9c..3078c403b42d 100644
--- a/drivers/thermal/dove_thermal.c
+++ b/drivers/thermal/dove_thermal.c
@@ -143,22 +143,18 @@ static int dove_thermal_probe(struct platform_device *pdev)
         if (!priv)
                 return -ENOMEM;
 
-        priv->sensor = devm_request_and_ioremap(&pdev->dev, res);
-        if (!priv->sensor) {
-                dev_err(&pdev->dev, "Failed to request_ioremap memory\n");
-                return -EADDRNOTAVAIL;
-        }
+        priv->sensor = devm_ioremap_resource(&pdev->dev, res);
+        if (IS_ERR(priv->sensor))
+                return PTR_ERR(priv->sensor);
 
         res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
         if (!res) {
                 dev_err(&pdev->dev, "Failed to get platform resource\n");
                 return -ENODEV;
         }
-        priv->control = devm_request_and_ioremap(&pdev->dev, res);
-        if (!priv->control) {
-                dev_err(&pdev->dev, "Failed to request_ioremap memory\n");
-                return -EADDRNOTAVAIL;
-        }
+        priv->control = devm_ioremap_resource(&pdev->dev, res);
+        if (IS_ERR(priv->control))
+                return PTR_ERR(priv->control);
 
         ret = dove_init_sensor(priv);
         if (ret) {
diff --git a/drivers/thermal/exynos_thermal.c b/drivers/thermal/exynos_thermal.c
index e04ebd8671ac..46568c078dee 100644
--- a/drivers/thermal/exynos_thermal.c
+++ b/drivers/thermal/exynos_thermal.c
@@ -476,7 +476,7 @@ static int exynos_register_thermal(struct thermal_sensor_conf *sensor_conf)
 
         if (IS_ERR(th_zone->therm_dev)) {
                 pr_err("Failed to register thermal zone device\n");
-                ret = -EINVAL;
+                ret = PTR_ERR(th_zone->therm_dev);
                 goto err_unregister;
         }
         th_zone->mode = THERMAL_DEVICE_ENABLED;
diff --git a/drivers/thermal/kirkwood_thermal.c b/drivers/thermal/kirkwood_thermal.c
index 65cb4f09e8f6..e5500edb5285 100644
--- a/drivers/thermal/kirkwood_thermal.c
+++ b/drivers/thermal/kirkwood_thermal.c
@@ -85,11 +85,9 @@ static int kirkwood_thermal_probe(struct platform_device *pdev)
         if (!priv)
                 return -ENOMEM;
 
-        priv->sensor = devm_request_and_ioremap(&pdev->dev, res);
-        if (!priv->sensor) {
-                dev_err(&pdev->dev, "Failed to request_ioremap memory\n");
-                return -EADDRNOTAVAIL;
-        }
+        priv->sensor = devm_ioremap_resource(&pdev->dev, res);
+        if (IS_ERR(priv->sensor))
+                return PTR_ERR(priv->sensor);
 
         thermal = thermal_zone_device_register("kirkwood_thermal", 0, 0,
                                                priv, &ops, NULL, 0, 0);
diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c
index 28f091994013..2cc5b6115e3e 100644
--- a/drivers/thermal/rcar_thermal.c
+++ b/drivers/thermal/rcar_thermal.c
@@ -145,6 +145,7 @@ static int rcar_thermal_update_temp(struct rcar_thermal_priv *priv)
         struct device *dev = rcar_priv_to_dev(priv);
         int i;
         int ctemp, old, new;
+        int ret = -EINVAL;
 
         mutex_lock(&priv->lock);
 
@@ -174,7 +175,7 @@ static int rcar_thermal_update_temp(struct rcar_thermal_priv *priv)
 
         if (!ctemp) {
                 dev_err(dev, "thermal sensor was broken\n");
-                return -EINVAL;
+                goto err_out_unlock;
         }
 
         /*
@@ -192,10 +193,10 @@ static int rcar_thermal_update_temp(struct rcar_thermal_priv *priv)
         dev_dbg(dev, "thermal%d  %d -> %d\n", priv->id, priv->ctemp, ctemp);
 
         priv->ctemp = ctemp;
-
+        ret = 0;
+err_out_unlock:
         mutex_unlock(&priv->lock);
-
-        return 0;
+        return ret;
 }
 
 static int rcar_thermal_get_temp(struct thermal_zone_device *zone,
@@ -363,6 +364,7 @@ static int rcar_thermal_probe(struct platform_device *pdev)
         struct resource *res, *irq;
         int mres = 0;
         int i;
+        int ret = -ENODEV;
         int idle = IDLE_INTERVAL;
 
         common = devm_kzalloc(dev, sizeof(*common), GFP_KERNEL);
@@ -399,11 +401,9 @@ static int rcar_thermal_probe(struct platform_device *pdev)
                 /*
                  * rcar_has_irq_support() will be enabled
                  */
-                common->base = devm_request_and_ioremap(dev, res);
-                if (!common->base) {
-                        dev_err(dev, "Unable to ioremap thermal register\n");
-                        return -ENOMEM;
-                }
+                common->base = devm_ioremap_resource(dev, res);
+                if (IS_ERR(common->base))
+                        return PTR_ERR(common->base);
 
                 /* enable temperature comparation */
                 rcar_thermal_common_write(common, ENR, 0x00030303);
@@ -422,11 +422,9 @@ static int rcar_thermal_probe(struct platform_device *pdev)
                         return -ENOMEM;
                 }
 
-                priv->base = devm_request_and_ioremap(dev, res);
-                if (!priv->base) {
-                        dev_err(dev, "Unable to ioremap priv register\n");
-                        return -ENOMEM;
-                }
+                priv->base = devm_ioremap_resource(dev, res);
+                if (IS_ERR(priv->base))
+                        return PTR_ERR(priv->base);
 
                 priv->common = common;
                 priv->id = i;
@@ -441,6 +439,7 @@ static int rcar_thermal_probe(struct platform_device *pdev)
                                                 idle);
                 if (IS_ERR(priv->zone)) {
                         dev_err(dev, "can't register thermal zone\n");
+                        ret = PTR_ERR(priv->zone);
                         goto error_unregister;
                 }
 
@@ -460,7 +459,7 @@ error_unregister:
         rcar_thermal_for_each_priv(priv, common)
                 thermal_zone_device_unregister(priv->zone);
 
-        return -ENODEV;
+        return ret;
 }
 
 static int rcar_thermal_remove(struct platform_device *pdev)
diff --git a/drivers/tty/serial/8250/8250.c b/drivers/tty/serial/8250/8250_core.c
index cf6a5383748a..35f9c96aada9 100644
--- a/drivers/tty/serial/8250/8250.c
+++ b/drivers/tty/serial/8250/8250_core.c
@@ -3418,6 +3418,7 @@ MODULE_PARM_DESC(probe_rsa, "Probe I/O ports for RSA");
 #endif
 MODULE_ALIAS_CHARDEV_MAJOR(TTY_MAJOR);
 
+#ifdef CONFIG_SERIAL_8250_DEPRECATED_OPTIONS
 #ifndef MODULE
 /* This module was renamed to 8250_core in 3.7.  Keep the old "8250" name
  * working as well for the module options so we don't break people.  We
@@ -3432,7 +3433,7 @@ MODULE_ALIAS_CHARDEV_MAJOR(TTY_MAJOR);
 static void __used s8250_options(void)
 {
 #undef MODULE_PARAM_PREFIX
-#define MODULE_PARAM_PREFIX "8250."
+#define MODULE_PARAM_PREFIX "8250_core."
 
         module_param_cb(share_irqs, &param_ops_uint, &share_irqs, 0644);
         module_param_cb(nr_uarts, &param_ops_uint, &nr_uarts, 0644);
@@ -3444,5 +3445,6 @@ static void __used s8250_options(void)
 #endif
 }
 #else
-MODULE_ALIAS("8250");
+MODULE_ALIAS("8250_core");
+#endif
 #endif
diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
index aa76825229dc..26e3a97ab157 100644
--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -1554,6 +1554,7 @@ pci_wch_ch353_setup(struct serial_private *priv,
 #define PCI_DEVICE_ID_PLX_CRONYX_OMEGA  0xc001
 #define PCI_DEVICE_ID_INTEL_PATSBURG_KT 0x1d3d
 #define PCI_VENDOR_ID_WCH               0x4348
+#define PCI_DEVICE_ID_WCH_CH352_2S      0x3253
 #define PCI_DEVICE_ID_WCH_CH353_4S      0x3453
 #define PCI_DEVICE_ID_WCH_CH353_2S1PF   0x5046
 #define PCI_DEVICE_ID_WCH_CH353_2S1P    0x7053
@@ -2172,6 +2173,14 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = {
                 .subdevice      = PCI_ANY_ID,
                 .setup          = pci_wch_ch353_setup,
         },
+        /* WCH CH352 2S card (16550 clone) */
+        {
+                .vendor         = PCI_VENDOR_ID_WCH,
+                .device         = PCI_DEVICE_ID_WCH_CH352_2S,
+                .subvendor      = PCI_ANY_ID,
+                .subdevice      = PCI_ANY_ID,
+                .setup          = pci_wch_ch353_setup,
+        },
         /*
          * ASIX devices with FIFO bug
          */
@@ -4870,6 +4879,10 @@ static struct pci_device_id serial_pci_tbl[] = {
                 PCI_ANY_ID, PCI_ANY_ID,
                 0, 0, pbn_b0_bt_2_115200 },
 
+        {       PCI_VENDOR_ID_WCH, PCI_DEVICE_ID_WCH_CH352_2S,
+                PCI_ANY_ID, PCI_ANY_ID,
+                0, 0, pbn_b0_bt_2_115200 },
+
         /*
          * Commtech, Inc. Fastcom adapters
          */
diff --git a/drivers/tty/serial/8250/Kconfig b/drivers/tty/serial/8250/Kconfig
index 2ef9537bcb2c..80fe91e64a52 100644
--- a/drivers/tty/serial/8250/Kconfig
+++ b/drivers/tty/serial/8250/Kconfig
@@ -33,6 +33,23 @@ config SERIAL_8250
           Most people will say Y or M here, so that they can use serial mice,
           modems and similar devices connecting to the standard serial ports.
 
+config SERIAL_8250_DEPRECATED_OPTIONS
+        bool "Support 8250_core.* kernel options (DEPRECATED)"
+        depends on SERIAL_8250
+        default y
+        ---help---
+          In 3.7 we renamed 8250 to 8250_core by mistake, so now we have to
+          accept kernel parameters in both forms like 8250_core.nr_uarts=4 and
+          8250.nr_uarts=4. We now renamed the module back to 8250, but if
+          anybody noticed in 3.7 and changed their userspace we still have to
+          keep the 8350_core.* options around until they revert the changes
+          they already did.
+
+          If 8250 is built as a module, this adds 8250_core alias instead. 
+
+          If you did not notice yet and/or you have userspace from pre-3.7, it
+          is safe (and recommended) to say N here.
+
 config SERIAL_8250_PNP
         bool "8250/16550 PNP device support" if EXPERT
         depends on SERIAL_8250 && PNP
diff --git a/drivers/tty/serial/8250/Makefile b/drivers/tty/serial/8250/Makefile
index a23838a4d535..36d68d054307 100644
--- a/drivers/tty/serial/8250/Makefile
+++ b/drivers/tty/serial/8250/Makefile
@@ -2,10 +2,10 @@
 # Makefile for the 8250 serial device drivers.
 #
 
-obj-$(CONFIG_SERIAL_8250)               += 8250_core.o
-8250_core-y                             := 8250.o
-8250_core-$(CONFIG_SERIAL_8250_PNP)     += 8250_pnp.o
-8250_core-$(CONFIG_SERIAL_8250_DMA)     += 8250_dma.o
+obj-$(CONFIG_SERIAL_8250)               += 8250.o
+8250-y                                  := 8250_core.o
+8250-$(CONFIG_SERIAL_8250_PNP)          += 8250_pnp.o
+8250-$(CONFIG_SERIAL_8250_DMA)          += 8250_dma.o
 obj-$(CONFIG_SERIAL_8250_GSC)           += 8250_gsc.o
 obj-$(CONFIG_SERIAL_8250_PCI)           += 8250_pci.o
 obj-$(CONFIG_SERIAL_8250_HP300)         += 8250_hp300.o
diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
index d4a7c241b751..3467462869ce 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -158,7 +158,7 @@ struct atmel_uart_port {
 };
 
 static struct atmel_uart_port atmel_ports[ATMEL_MAX_UART];
-static unsigned long atmel_ports_in_use;
+static DECLARE_BITMAP(atmel_ports_in_use, ATMEL_MAX_UART);
 
 #ifdef SUPPORT_SYSRQ
 static struct console atmel_console;
@@ -1769,15 +1769,14 @@ static int atmel_serial_probe(struct platform_device *pdev)
         if (ret < 0)
                 /* port id not found in platform data nor device-tree aliases:
                  * auto-enumerate it */
-                ret = find_first_zero_bit(&atmel_ports_in_use,
-                                sizeof(atmel_ports_in_use));
+                ret = find_first_zero_bit(atmel_ports_in_use, ATMEL_MAX_UART);
 
-        if (ret > ATMEL_MAX_UART) {
+        if (ret >= ATMEL_MAX_UART) {
                 ret = -ENODEV;
                 goto err;
         }
 
-        if (test_and_set_bit(ret, &atmel_ports_in_use)) {
+        if (test_and_set_bit(ret, atmel_ports_in_use)) {
                 /* port already in use */
                 ret = -EBUSY;
                 goto err;
@@ -1857,7 +1856,7 @@ static int atmel_serial_remove(struct platform_device *pdev)
 
         /* "port" is allocated statically, so we shouldn't free it */
 
-        clear_bit(port->line, &atmel_ports_in_use);
+        clear_bit(port->line, atmel_ports_in_use);
 
         clk_put(atmel_port->clk);
 
diff --git a/drivers/tty/serial/sunsu.c b/drivers/tty/serial/sunsu.c
index e343d6670854..451687cb9685 100644
--- a/drivers/tty/serial/sunsu.c
+++ b/drivers/tty/serial/sunsu.c
@@ -968,6 +968,7 @@ static struct uart_ops sunsu_pops = {
 #define UART_NR 4
 
 static struct uart_sunsu_port sunsu_ports[UART_NR];
+static int nr_inst; /* Number of already registered ports */
 
 #ifdef CONFIG_SERIO
 
@@ -1337,13 +1338,8 @@ static int __init sunsu_console_setup(struct console *co, char *options)
         printk("Console: ttyS%d (SU)\n",
                (sunsu_reg.minor - 64) + co->index);
 
-        /*
-         * Check whether an invalid uart number has been specified, and
-         * if so, search for the first available port that does have
-         * console support.
-         */
-        if (co->index >= UART_NR)
-                co->index = 0;
+        if (co->index > nr_inst)
+                return -ENODEV;
         port = &sunsu_ports[co->index].port;
 
         /*
@@ -1408,7 +1404,6 @@ static enum su_type su_get_type(struct device_node *dp)
 
 static int su_probe(struct platform_device *op)
 {
-        static int inst;
         struct device_node *dp = op->dev.of_node;
         struct uart_sunsu_port *up;
         struct resource *rp;
@@ -1418,16 +1413,16 @@ static int su_probe(struct platform_device *op)
 
         type = su_get_type(dp);
         if (type == SU_PORT_PORT) {
-                if (inst >= UART_NR)
+                if (nr_inst >= UART_NR)
                         return -EINVAL;
-                up = &sunsu_ports[inst];
+                up = &sunsu_ports[nr_inst];
         } else {
                 up = kzalloc(sizeof(*up), GFP_KERNEL);
                 if (!up)
                         return -ENOMEM;
         }
 
-        up->port.line = inst;
+        up->port.line = nr_inst;
 
         spin_lock_init(&up->port.lock);
 
@@ -1461,6 +1456,8 @@ static int su_probe(struct platform_device *op)
                 }
                 dev_set_drvdata(&op->dev, up);
 
+                nr_inst++;
+
                 return 0;
         }
 
@@ -1488,7 +1485,7 @@ static int su_probe(struct platform_device *op)
 
         dev_set_drvdata(&op->dev, up);
 
-        inst++;
+        nr_inst++;
 
         return 0;
 
diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
index ba451c7209fc..f36bbba1ac8b 100644
--- a/drivers/tty/serial/xilinx_uartps.c
+++ b/drivers/tty/serial/xilinx_uartps.c
@@ -578,6 +578,8 @@ static int xuartps_startup(struct uart_port *port)
         /* Receive Timeout register is enabled with value of 10 */
         xuartps_writel(10, XUARTPS_RXTOUT_OFFSET);
 
+        /* Clear out any pending interrupts before enabling them */
+        xuartps_writel(xuartps_readl(XUARTPS_ISR_OFFSET), XUARTPS_ISR_OFFSET);
 
         /* Set the Interrupt Registers with desired interrupts */
         xuartps_writel(XUARTPS_IXR_TXEMPTY | XUARTPS_IXR_PARITY |
diff --git a/drivers/tty/vt/vc_screen.c b/drivers/tty/vt/vc_screen.c
index e4ca345873c3..d7799deacb21 100644
--- a/drivers/tty/vt/vc_screen.c
+++ b/drivers/tty/vt/vc_screen.c
@@ -93,7 +93,7 @@ vcs_poll_data_free(struct vcs_poll_data *poll)
 static struct vcs_poll_data *
 vcs_poll_data_get(struct file *file)
 {
-        struct vcs_poll_data *poll = file->private_data;
+        struct vcs_poll_data *poll = file->private_data, *kill = NULL;
 
         if (poll)
                 return poll;
@@ -122,10 +122,12 @@ vcs_poll_data_get(struct file *file)
                 file->private_data = poll;
         } else {
                 /* someone else raced ahead of us */
-                vcs_poll_data_free(poll);
+                kill = poll;
                 poll = file->private_data;
         }
         spin_unlock(&file->f_lock);
+        if (kill)
+                vcs_poll_data_free(kill);
 
         return poll;
 }
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index 8ac25adf31b4..387dc6c8ad25 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -593,7 +593,6 @@ static void acm_port_destruct(struct tty_port *port)
 
         dev_dbg(&acm->control->dev, "%s\n", __func__);
 
-        tty_unregister_device(acm_tty_driver, acm->minor);
         acm_release_minor(acm);
         usb_put_intf(acm->control);
         kfree(acm->country_codes);
@@ -977,6 +976,8 @@ static int acm_probe(struct usb_interface *intf,
         int num_rx_buf;
         int i;
         int combined_interfaces = 0;
+        struct device *tty_dev;
+        int rv = -ENOMEM;
 
         /* normal quirks */
         quirks = (unsigned long)id->driver_info;
@@ -1339,11 +1340,24 @@ skip_countries:
         usb_set_intfdata(data_interface, acm);
 
         usb_get_intf(control_interface);
-        tty_port_register_device(&acm->port, acm_tty_driver, minor,
+        tty_dev = tty_port_register_device(&acm->port, acm_tty_driver, minor,
                         &control_interface->dev);
+        if (IS_ERR(tty_dev)) {
+                rv = PTR_ERR(tty_dev);
+                goto alloc_fail8;
+        }
 
         return 0;
+alloc_fail8:
+        if (acm->country_codes) {
+                device_remove_file(&acm->control->dev,
+                                &dev_attr_wCountryCodes);
+                device_remove_file(&acm->control->dev,
+                                &dev_attr_iCountryCodeRelDate);
+        }
+        device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities);
 alloc_fail7:
+        usb_set_intfdata(intf, NULL);
         for (i = 0; i < ACM_NW; i++)
                 usb_free_urb(acm->wb[i].urb);
 alloc_fail6:
@@ -1359,7 +1373,7 @@ alloc_fail2:
         acm_release_minor(acm);
         kfree(acm);
 alloc_fail:
-        return -ENOMEM;
+        return rv;
 }
 
 static void stop_data_traffic(struct acm *acm)
@@ -1411,6 +1425,8 @@ static void acm_disconnect(struct usb_interface *intf)
 
         stop_data_traffic(acm);
 
+        tty_unregister_device(acm_tty_driver, acm->minor);
+
         usb_free_urb(acm->ctrlurb);
         for (i = 0; i < ACM_NW; i++)
                 usb_free_urb(acm->wb[i].urb);
diff --git a/drivers/usb/core/hcd-pci.c b/drivers/usb/core/hcd-pci.c
index 622b4a48e732..2b487d4797bd 100644
--- a/drivers/usb/core/hcd-pci.c
+++ b/drivers/usb/core/hcd-pci.c
@@ -173,6 +173,7 @@ int usb_hcd_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
         struct hc_driver        *driver;
         struct usb_hcd          *hcd;
         int                     retval;
+        int                     hcd_irq = 0;
 
         if (usb_disabled())
                 return -ENODEV;
@@ -187,15 +188,19 @@ int usb_hcd_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
                 return -ENODEV;
         dev->current_state = PCI_D0;
 
-        /* The xHCI driver supports MSI and MSI-X,
-         * so don't fail if the BIOS doesn't provide a legacy IRQ.
+        /*
+         * The xHCI driver has its own irq management
+         * make sure irq setup is not touched for xhci in generic hcd code
          */
-        if (!dev->irq && (driver->flags & HCD_MASK) != HCD_USB3) {
-                dev_err(&dev->dev,
-                        "Found HC with no IRQ.  Check BIOS/PCI %s setup!\n",
-                        pci_name(dev));
-                retval = -ENODEV;
-                goto disable_pci;
+        if ((driver->flags & HCD_MASK) != HCD_USB3) {
+                if (!dev->irq) {
+                        dev_err(&dev->dev,
+                        "Found HC with no IRQ. Check BIOS/PCI %s setup!\n",
+                                pci_name(dev));
+                        retval = -ENODEV;
+                        goto disable_pci;
+                }
+                hcd_irq = dev->irq;
         }
 
         hcd = usb_create_hcd(driver, &dev->dev, pci_name(dev));
@@ -245,7 +250,7 @@ int usb_hcd_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
 
         pci_set_master(dev);
 
-        retval = usb_add_hcd(hcd, dev->irq, IRQF_SHARED);
+        retval = usb_add_hcd(hcd, hcd_irq, IRQF_SHARED);
         if (retval != 0)
                 goto unmap_registers;
         set_hs_companion(dev, hcd);
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 99b34a30354f..f9ec44cbb82f 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -2412,6 +2412,14 @@ int usb_hcd_is_primary_hcd(struct usb_hcd *hcd)
 }
 EXPORT_SYMBOL_GPL(usb_hcd_is_primary_hcd);
 
+int usb_hcd_find_raw_port_number(struct usb_hcd *hcd, int port1)
+{
+        if (!hcd->driver->find_raw_port_number)
+                return port1;
+
+        return hcd->driver->find_raw_port_number(hcd, port1);
+}
+
 static int usb_hcd_request_irqs(struct usb_hcd *hcd,
                 unsigned int irqnum, unsigned long irqflags)
 {
diff --git a/drivers/usb/core/usb-acpi.c b/drivers/usb/core/usb-acpi.c
index b6f4bad3f756..255c14464bf2 100644
--- a/drivers/usb/core/usb-acpi.c
+++ b/drivers/usb/core/usb-acpi.c
@@ -15,6 +15,7 @@
 #include <linux/kernel.h>
 #include <linux/acpi.h>
 #include <linux/pci.h>
+#include <linux/usb/hcd.h>
 #include <acpi/acpi_bus.h>
 
 #include "usb.h"
@@ -188,8 +189,13 @@ static int usb_acpi_find_device(struct device *dev, acpi_handle *handle)
                  * connected to.
                  */
                 if (!udev->parent) {
-                        *handle = acpi_get_child(DEVICE_ACPI_HANDLE(&udev->dev),
+                        struct usb_hcd *hcd = bus_to_hcd(udev->bus);
+                        int raw_port_num;
+
+                        raw_port_num = usb_hcd_find_raw_port_number(hcd,
                                 port_num);
+                        *handle = acpi_get_child(DEVICE_ACPI_HANDLE(&udev->dev),
+                                raw_port_num);
                         if (!*handle)
                                 return -ENODEV;
                 } else {
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index 5a0c541daf89..c7525b1cad74 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -145,6 +145,7 @@ config USB_LPC32XX
         tristate "LPC32XX USB Peripheral Controller"
         depends on ARCH_LPC32XX
         select USB_ISP1301
+        select USB_OTG_UTILS
         help
            This option selects the USB device controller in the LPC32xx SoC.
 
diff --git a/drivers/usb/gadget/f_rndis.c b/drivers/usb/gadget/f_rndis.c
index 71beeb833558..cc9c49c57c80 100644
--- a/drivers/usb/gadget/f_rndis.c
+++ b/drivers/usb/gadget/f_rndis.c
@@ -447,14 +447,13 @@ static void rndis_response_complete(struct usb_ep *ep, struct usb_request *req)
 static void rndis_command_complete(struct usb_ep *ep, struct usb_request *req)
 {
         struct f_rndis                  *rndis = req->context;
-        struct usb_composite_dev        *cdev = rndis->port.func.config->cdev;
         int                             status;
 
         /* received RNDIS command from USB_CDC_SEND_ENCAPSULATED_COMMAND */
 //      spin_lock(&dev->lock);
         status = rndis_msg_parser(rndis->config, (u8 *) req->buf);
         if (status < 0)
-                ERROR(cdev, "RNDIS command error %d, %d/%d\n",
+                pr_err("RNDIS command error %d, %d/%d\n",
                         status, req->actual, req->length);
 //      spin_unlock(&dev->lock);
 }
diff --git a/drivers/usb/gadget/g_ffs.c b/drivers/usb/gadget/g_ffs.c
index 3953dd4d7186..3b343b23e4b0 100644
--- a/drivers/usb/gadget/g_ffs.c
+++ b/drivers/usb/gadget/g_ffs.c
@@ -357,7 +357,7 @@ static int gfs_bind(struct usb_composite_dev *cdev)
                 goto error;
         gfs_dev_desc.iProduct = gfs_strings[USB_GADGET_PRODUCT_IDX].id;
 
-        for (i = func_num; --i; ) {
+        for (i = func_num; i--; ) {
                 ret = functionfs_bind(ffs_tab[i].ffs_data, cdev);
                 if (unlikely(ret < 0)) {
                         while (++i < func_num)
@@ -413,7 +413,7 @@ static int gfs_unbind(struct usb_composite_dev *cdev)
                 gether_cleanup();
         gfs_ether_setup = false;
 
-        for (i = func_num; --i; )
+        for (i = func_num; i--; )
                 if (ffs_tab[i].ffs_data)
                         functionfs_unbind(ffs_tab[i].ffs_data);
 
diff --git a/drivers/usb/gadget/net2272.c b/drivers/usb/gadget/net2272.c
index d226058e3b88..32524b631959 100644
--- a/drivers/usb/gadget/net2272.c
+++ b/drivers/usb/gadget/net2272.c
@@ -59,7 +59,7 @@ static const char * const ep_name[] = {
 };
 
 #define DMA_ADDR_INVALID        (~(dma_addr_t)0)
-#ifdef CONFIG_USB_GADGET_NET2272_DMA
+#ifdef CONFIG_USB_NET2272_DMA
 /*
  * use_dma: the NET2272 can use an external DMA controller.
  * Note that since there is no generic DMA api, some functions,
@@ -1495,6 +1495,13 @@ stop_activity(struct net2272 *dev, struct usb_gadget_driver *driver)
         for (i = 0; i < 4; ++i)
                 net2272_dequeue_all(&dev->ep[i]);
 
+        /* report disconnect; the driver is already quiesced */
+        if (driver) {
+                spin_unlock(&dev->lock);
+                driver->disconnect(&dev->gadget);
+                spin_lock(&dev->lock);
+        }
+
         net2272_usb_reinit(dev);
 }
 
diff --git a/drivers/usb/gadget/net2280.c b/drivers/usb/gadget/net2280.c
index a1b650e11339..3bd0f992fb49 100644
--- a/drivers/usb/gadget/net2280.c
+++ b/drivers/usb/gadget/net2280.c
@@ -1924,7 +1924,6 @@ static int net2280_start(struct usb_gadget *_gadget,
 err_func:
         device_remove_file (&dev->pdev->dev, &dev_attr_function);
 err_unbind:
-        driver->unbind (&dev->gadget);
         dev->gadget.dev.driver = NULL;
         dev->driver = NULL;
         return retval;
@@ -1946,6 +1945,13 @@ stop_activity (struct net2280 *dev, struct usb_gadget_driver *driver)
         for (i = 0; i < 7; i++)
                 nuke (&dev->ep [i]);
 
+        /* report disconnect; the driver is already quiesced */
+        if (driver) {
+                spin_unlock(&dev->lock);
+                driver->disconnect(&dev->gadget);
+                spin_lock(&dev->lock);
+        }
+
         usb_reinit (dev);
 }
 
diff --git a/drivers/usb/gadget/u_serial.c b/drivers/usb/gadget/u_serial.c
index c5034d9c946b..b369292d4b90 100644
--- a/drivers/usb/gadget/u_serial.c
+++ b/drivers/usb/gadget/u_serial.c
@@ -136,7 +136,7 @@ static struct portmaster {
         pr_debug(fmt, ##arg)
 #endif /* pr_vdebug */
 #else
-#ifndef pr_vdebig
+#ifndef pr_vdebug
 #define pr_vdebug(fmt, arg...) \
         ({ if (0) pr_debug(fmt, ##arg); })
 #endif /* pr_vdebug */
diff --git a/drivers/usb/gadget/udc-core.c b/drivers/usb/gadget/udc-core.c
index 2a9cd369f71c..f8f62c3ed65e 100644
--- a/drivers/usb/gadget/udc-core.c
+++ b/drivers/usb/gadget/udc-core.c
@@ -216,7 +216,7 @@ static void usb_gadget_remove_driver(struct usb_udc *udc)
         usb_gadget_disconnect(udc->gadget);
         udc->driver->disconnect(udc->gadget);
         udc->driver->unbind(udc->gadget);
-        usb_gadget_udc_stop(udc->gadget, udc->driver);
+        usb_gadget_udc_stop(udc->gadget, NULL);
 
         udc->driver = NULL;
         udc->dev.driver = NULL;
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 5726cb144abf..416a6dce5e11 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -302,6 +302,7 @@ static void ehci_quiesce (struct ehci_hcd *ehci)
 
 static void end_unlink_async(struct ehci_hcd *ehci);
 static void unlink_empty_async(struct ehci_hcd *ehci);
+static void unlink_empty_async_suspended(struct ehci_hcd *ehci);
 static void ehci_work(struct ehci_hcd *ehci);
 static void start_unlink_intr(struct ehci_hcd *ehci, struct ehci_qh *qh);
 static void end_unlink_intr(struct ehci_hcd *ehci, struct ehci_qh *qh);
diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
index 4d3b294f203e..7d06e77f6c4f 100644
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -328,7 +328,7 @@ static int ehci_bus_suspend (struct usb_hcd *hcd)
         ehci->rh_state = EHCI_RH_SUSPENDED;
 
         end_unlink_async(ehci);
-        unlink_empty_async(ehci);
+        unlink_empty_async_suspended(ehci);
         ehci_handle_intr_unlinks(ehci);
         end_free_itds(ehci);
 
diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c
index 5464665f0b6a..23d136904285 100644
--- a/drivers/usb/host/ehci-q.c
+++ b/drivers/usb/host/ehci-q.c
@@ -1316,6 +1316,19 @@ static void unlink_empty_async(struct ehci_hcd *ehci)
         }
 }
 
+/* The root hub is suspended; unlink all the async QHs */
+static void unlink_empty_async_suspended(struct ehci_hcd *ehci)
+{
+        struct ehci_qh          *qh;
+
+        while (ehci->async->qh_next.qh) {
+                qh = ehci->async->qh_next.qh;
+                WARN_ON(!list_empty(&qh->qtd_list));
+                single_unlink_async(ehci, qh);
+        }
+        start_iaa_cycle(ehci, false);
+}
+
 /* makes sure the async qh will become idle */
 /* caller must own ehci->lock */
 
diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c
index b476daf49f6f..010f686d8881 100644
--- a/drivers/usb/host/ehci-sched.c
+++ b/drivers/usb/host/ehci-sched.c
@@ -1214,6 +1214,7 @@ itd_urb_transaction (
 
                 memset (itd, 0, sizeof *itd);
                 itd->itd_dma = itd_dma;
+                itd->frame = 9999;              /* an invalid value */
                 list_add (&itd->itd_list, &sched->td_list);
         }
         spin_unlock_irqrestore (&ehci->lock, flags);
@@ -1915,6 +1916,7 @@ sitd_urb_transaction (
 
                 memset (sitd, 0, sizeof *sitd);
                 sitd->sitd_dma = sitd_dma;
+                sitd->frame = 9999;             /* an invalid value */
                 list_add (&sitd->sitd_list, &iso_sched->td_list);
         }
 
diff --git a/drivers/usb/host/ehci-timer.c b/drivers/usb/host/ehci-timer.c
index 20dbdcbe9b0f..c3fa1305f830 100644
--- a/drivers/usb/host/ehci-timer.c
+++ b/drivers/usb/host/ehci-timer.c
@@ -304,7 +304,7 @@ static void ehci_iaa_watchdog(struct ehci_hcd *ehci)
          * (a) SMP races against real IAA firing and retriggering, and
          * (b) clean HC shutdown, when IAA watchdog was pending.
          */
-        if (ehci->async_iaa) {
+        if (1) {
                 u32 cmd, status;
 
                 /* If we get here, IAA is *REALLY* late.  It's barely
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index 35616ffbe3ae..6dc238c592bc 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -1022,44 +1022,24 @@ void xhci_copy_ep0_dequeue_into_input_ctx(struct xhci_hcd *xhci,
  * is attached to (or the roothub port its ancestor hub is attached to).  All we
  * know is the index of that port under either the USB 2.0 or the USB 3.0
  * roothub, but that doesn't give us the real index into the HW port status
- * registers.  Scan through the xHCI roothub port array, looking for the Nth
- * entry of the correct port speed.  Return the port number of that entry.
+ * registers. Call xhci_find_raw_port_number() to get real index.
  */
 static u32 xhci_find_real_port_number(struct xhci_hcd *xhci,
                 struct usb_device *udev)
 {
         struct usb_device *top_dev;
-        unsigned int num_similar_speed_ports;
-        unsigned int faked_port_num;
-        int i;
+        struct usb_hcd *hcd;
+
+        if (udev->speed == USB_SPEED_SUPER)
+                hcd = xhci->shared_hcd;
+        else
+                hcd = xhci->main_hcd;
 
         for (top_dev = udev; top_dev->parent && top_dev->parent->parent;
                         top_dev = top_dev->parent)
                 /* Found device below root hub */;
-        faked_port_num = top_dev->portnum;
-        for (i = 0, num_similar_speed_ports = 0;
-                        i < HCS_MAX_PORTS(xhci->hcs_params1); i++) {
-                u8 port_speed = xhci->port_array[i];
-
-                /*
-                 * Skip ports that don't have known speeds, or have duplicate
-                 * Extended Capabilities port speed entries.
-                 */
-                if (port_speed == 0 || port_speed == DUPLICATE_ENTRY)
-                        continue;
 
-                /*
-                 * USB 3.0 ports are always under a USB 3.0 hub.  USB 2.0 and
-                 * 1.1 ports are under the USB 2.0 hub.  If the port speed
-                 * matches the device speed, it's a similar speed port.
-                 */
-                if ((port_speed == 0x03) == (udev->speed == USB_SPEED_SUPER))
-                        num_similar_speed_ports++;
-                if (num_similar_speed_ports == faked_port_num)
-                        /* Roothub ports are numbered from 1 to N */
-                        return i+1;
-        }
-        return 0;
+        return  xhci_find_raw_port_number(hcd, top_dev->portnum);
 }
 
 /* Setup an xHCI virtual device for a Set Address command */
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index af259e0ec172..1a30c380043c 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -313,6 +313,7 @@ static const struct hc_driver xhci_pci_hc_driver = {
         .set_usb2_hw_lpm =      xhci_set_usb2_hardware_lpm,
         .enable_usb3_lpm_timeout =      xhci_enable_usb3_lpm_timeout,
         .disable_usb3_lpm_timeout =     xhci_disable_usb3_lpm_timeout,
+        .find_raw_port_number = xhci_find_raw_port_number,
 };
 
 /*-------------------------------------------------------------------------*/
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 882875465301..1969c001b3f9 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -1599,14 +1599,20 @@ static void handle_port_status(struct xhci_hcd *xhci,
         max_ports = HCS_MAX_PORTS(xhci->hcs_params1);
         if ((port_id <= 0) || (port_id > max_ports)) {
                 xhci_warn(xhci, "Invalid port id %d\n", port_id);
-                bogus_port_status = true;
-                goto cleanup;
+                inc_deq(xhci, xhci->event_ring);
+                return;
         }
 
         /* Figure out which usb_hcd this port is attached to:
          * is it a USB 3.0 port or a USB 2.0/1.1 port?
          */
         major_revision = xhci->port_array[port_id - 1];
+
+        /* Find the right roothub. */
+        hcd = xhci_to_hcd(xhci);
+        if ((major_revision == 0x03) != (hcd->speed == HCD_USB3))
+                hcd = xhci->shared_hcd;
+
         if (major_revision == 0) {
                 xhci_warn(xhci, "Event for port %u not in "
                                 "Extended Capabilities, ignoring.\n",
@@ -1629,10 +1635,6 @@ static void handle_port_status(struct xhci_hcd *xhci,
          * into the index into the ports on the correct split roothub, and the
          * correct bus_state structure.
          */
-        /* Find the right roothub. */
-        hcd = xhci_to_hcd(xhci);
-        if ((major_revision == 0x03) != (hcd->speed == HCD_USB3))
-                hcd = xhci->shared_hcd;
         bus_state = &xhci->bus_state[hcd_index(hcd)];
         if (hcd->speed == HCD_USB3)
                 port_array = xhci->usb3_ports;
@@ -2027,8 +2029,8 @@ static int process_ctrl_td(struct xhci_hcd *xhci, struct xhci_td *td,
                 if (event_trb != ep_ring->dequeue &&
                                 event_trb != td->last_trb)
                         td->urb->actual_length =
-                                td->urb->transfer_buffer_length
-                                - TRB_LEN(le32_to_cpu(event->transfer_len));
+                                td->urb->transfer_buffer_length -
+                                EVENT_TRB_LEN(le32_to_cpu(event->transfer_len));
                 else
                         td->urb->actual_length = 0;
 
@@ -2060,7 +2062,7 @@ static int process_ctrl_td(struct xhci_hcd *xhci, struct xhci_td *td,
                 /* Maybe the event was for the data stage? */
                         td->urb->actual_length =
                                 td->urb->transfer_buffer_length -
-                                TRB_LEN(le32_to_cpu(event->transfer_len));
+                                EVENT_TRB_LEN(le32_to_cpu(event->transfer_len));
                         xhci_dbg(xhci, "Waiting for status "
                                         "stage event\n");
                         return 0;
@@ -2096,7 +2098,7 @@ static int process_isoc_td(struct xhci_hcd *xhci, struct xhci_td *td,
         /* handle completion code */
         switch (trb_comp_code) {
         case COMP_SUCCESS:
-                if (TRB_LEN(le32_to_cpu(event->transfer_len)) == 0) {
+                if (EVENT_TRB_LEN(le32_to_cpu(event->transfer_len)) == 0) {
                         frame->status = 0;
                         break;
                 }
@@ -2141,7 +2143,7 @@ static int process_isoc_td(struct xhci_hcd *xhci, struct xhci_td *td,
                                 len += TRB_LEN(le32_to_cpu(cur_trb->generic.field[2]));
                 }
                 len += TRB_LEN(le32_to_cpu(cur_trb->generic.field[2])) -
-                        TRB_LEN(le32_to_cpu(event->transfer_len));
+                        EVENT_TRB_LEN(le32_to_cpu(event->transfer_len));
 
                 if (trb_comp_code != COMP_STOP_INVAL) {
                         frame->actual_length = len;
@@ -2199,7 +2201,7 @@ static int process_bulk_intr_td(struct xhci_hcd *xhci, struct xhci_td *td,
         case COMP_SUCCESS:
                 /* Double check that the HW transferred everything. */
                 if (event_trb != td->last_trb ||
-                                TRB_LEN(le32_to_cpu(event->transfer_len)) != 0) {
+                    EVENT_TRB_LEN(le32_to_cpu(event->transfer_len)) != 0) {
                         xhci_warn(xhci, "WARN Successful completion "
                                         "on short TX\n");
                         if (td->urb->transfer_flags & URB_SHORT_NOT_OK)
@@ -2227,18 +2229,18 @@ static int process_bulk_intr_td(struct xhci_hcd *xhci, struct xhci_td *td,
                                 "%d bytes untransferred\n",
                                 td->urb->ep->desc.bEndpointAddress,
                                 td->urb->transfer_buffer_length,
-                                TRB_LEN(le32_to_cpu(event->transfer_len)));
+                                EVENT_TRB_LEN(le32_to_cpu(event->transfer_len)));
         /* Fast path - was this the last TRB in the TD for this URB? */
         if (event_trb == td->last_trb) {
-                if (TRB_LEN(le32_to_cpu(event->transfer_len)) != 0) {
+                if (EVENT_TRB_LEN(le32_to_cpu(event->transfer_len)) != 0) {
                         td->urb->actual_length =
                                 td->urb->transfer_buffer_length -
-                                TRB_LEN(le32_to_cpu(event->transfer_len));
+                                EVENT_TRB_LEN(le32_to_cpu(event->transfer_len));
                         if (td->urb->transfer_buffer_length <
                                         td->urb->actual_length) {
                                 xhci_warn(xhci, "HC gave bad length "
                                                 "of %d bytes left\n",
-                                          TRB_LEN(le32_to_cpu(event->transfer_len)));
+                                          EVENT_TRB_LEN(le32_to_cpu(event->transfer_len)));
                                 td->urb->actual_length = 0;
                                 if (td->urb->transfer_flags & URB_SHORT_NOT_OK)
                                         *status = -EREMOTEIO;
@@ -2280,7 +2282,7 @@ static int process_bulk_intr_td(struct xhci_hcd *xhci, struct xhci_td *td,
                 if (trb_comp_code != COMP_STOP_INVAL)
                         td->urb->actual_length +=
                                 TRB_LEN(le32_to_cpu(cur_trb->generic.field[2])) -
-                                TRB_LEN(le32_to_cpu(event->transfer_len));
+                                EVENT_TRB_LEN(le32_to_cpu(event->transfer_len));
         }
 
         return finish_td(xhci, td, event_trb, event, ep, status, false);
@@ -2368,7 +2370,7 @@ static int handle_tx_event(struct xhci_hcd *xhci,
          * transfer type
          */
         case COMP_SUCCESS:
-                if (TRB_LEN(le32_to_cpu(event->transfer_len)) == 0)
+                if (EVENT_TRB_LEN(le32_to_cpu(event->transfer_len)) == 0)
                         break;
                 if (xhci->quirks & XHCI_TRUST_TX_LENGTH)
                         trb_comp_code = COMP_SHORT_TX;
@@ -2461,14 +2463,21 @@ static int handle_tx_event(struct xhci_hcd *xhci,
                  * TD list.
                  */
                 if (list_empty(&ep_ring->td_list)) {
-                        xhci_warn(xhci, "WARN Event TRB for slot %d ep %d "
-                                        "with no TDs queued?\n",
-                                  TRB_TO_SLOT_ID(le32_to_cpu(event->flags)),
-                                  ep_index);
-                        xhci_dbg(xhci, "Event TRB with TRB type ID %u\n",
-                                 (le32_to_cpu(event->flags) &
-                                  TRB_TYPE_BITMASK)>>10);
-                        xhci_print_trb_offsets(xhci, (union xhci_trb *) event);
+                        /*
+                         * A stopped endpoint may generate an extra completion
+                         * event if the device was suspended.  Don't print
+                         * warnings.
+                         */
+                        if (!(trb_comp_code == COMP_STOP ||
+                                                trb_comp_code == COMP_STOP_INVAL)) {
+                                xhci_warn(xhci, "WARN Event TRB for slot %d ep %d with no TDs queued?\n",
+                                                TRB_TO_SLOT_ID(le32_to_cpu(event->flags)),
+                                                ep_index);
+                                xhci_dbg(xhci, "Event TRB with TRB type ID %u\n",
+                                                (le32_to_cpu(event->flags) &
+                                                 TRB_TYPE_BITMASK)>>10);
+                                xhci_print_trb_offsets(xhci, (union xhci_trb *) event);
+                        }
                         if (ep->skip) {
                                 ep->skip = false;
                                 xhci_dbg(xhci, "td_list is empty while skip "
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index f1f01a834ba7..53b8f89a0b1c 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -350,7 +350,7 @@ static int xhci_try_enable_msi(struct usb_hcd *hcd)
          * generate interrupts.  Don't even try to enable MSI.
          */
         if (xhci->quirks & XHCI_BROKEN_MSI)
-                return 0;
+                goto legacy_irq;
 
         /* unregister the legacy interrupt */
         if (hcd->irq)
@@ -371,6 +371,7 @@ static int xhci_try_enable_msi(struct usb_hcd *hcd)
                 return -EINVAL;
         }
 
+ legacy_irq:
         /* fall back to legacy interrupt*/
         ret = request_irq(pdev->irq, &usb_hcd_irq, IRQF_SHARED,
                         hcd->irq_descr, hcd);
@@ -3778,6 +3779,28 @@ int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev)
         return 0;
 }
 
+/*
+ * Transfer the port index into real index in the HW port status
+ * registers. Caculate offset between the port's PORTSC register
+ * and port status base. Divide the number of per port register
+ * to get the real index. The raw port number bases 1.
+ */
+int xhci_find_raw_port_number(struct usb_hcd *hcd, int port1)
+{
+        struct xhci_hcd *xhci = hcd_to_xhci(hcd);
+        __le32 __iomem *base_addr = &xhci->op_regs->port_status_base;
+        __le32 __iomem *addr;
+        int raw_port;
+
+        if (hcd->speed != HCD_USB3)
+                addr = xhci->usb2_ports[port1 - 1];
+        else
+                addr = xhci->usb3_ports[port1 - 1];
+
+        raw_port = (addr - base_addr)/NUM_PORT_REGS + 1;
+        return raw_port;
+}
+
 #ifdef CONFIG_USB_SUSPEND
 
 /* BESL to HIRD Encoding array for USB2 LPM */
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index f791bd0aee6c..63582719e0fb 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -206,8 +206,8 @@ struct xhci_op_regs {
 /* bits 12:31 are reserved (and should be preserved on writes). */
 
 /* IMAN - Interrupt Management Register */
-#define IMAN_IP         (1 << 1)
-#define IMAN_IE         (1 << 0)
+#define IMAN_IE         (1 << 1)
+#define IMAN_IP         (1 << 0)
 
 /* USBSTS - USB status - status bitmasks */
 /* HC not running - set to 1 when run/stop bit is cleared. */
@@ -972,6 +972,10 @@ struct xhci_transfer_event {
         __le32  flags;
 };
 
+/* Transfer event TRB length bit mask */
+/* bits 0:23 */
+#define EVENT_TRB_LEN(p)                ((p) & 0xffffff)
+
 /** Transfer Event bit fields **/
 #define TRB_TO_EP_ID(p) (((p) >> 16) & 0x1f)
 
@@ -1829,6 +1833,7 @@ void xhci_test_and_clear_bit(struct xhci_hcd *xhci, __le32 __iomem **port_array,
 int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex,
                 char *buf, u16 wLength);
 int xhci_hub_status_data(struct usb_hcd *hcd, char *buf);
+int xhci_find_raw_port_number(struct usb_hcd *hcd, int port1);
 
 #ifdef CONFIG_PM
 int xhci_bus_suspend(struct usb_hcd *hcd);
diff --git a/drivers/usb/musb/da8xx.c b/drivers/usb/musb/da8xx.c
index 7c71769d71ff..41613a2b35e8 100644
--- a/drivers/usb/musb/da8xx.c
+++ b/drivers/usb/musb/da8xx.c
@@ -327,7 +327,7 @@ static irqreturn_t da8xx_musb_interrupt(int irq, void *hci)
                 u8 devctl = musb_readb(mregs, MUSB_DEVCTL);
                 int err;
 
-                err = musb->int_usb & USB_INTR_VBUSERROR;
+                err = musb->int_usb & MUSB_INTR_VBUSERROR;
                 if (err) {
                         /*
                          * The Mentor core doesn't debounce VBUS as needed
diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c
index be18537c5f14..83eddedcd9be 100644
--- a/drivers/usb/musb/musb_gadget.c
+++ b/drivers/usb/musb/musb_gadget.c
@@ -141,7 +141,9 @@ static inline void map_dma_buffer(struct musb_request *request,
 static inline void unmap_dma_buffer(struct musb_request *request,
                                 struct musb *musb)
 {
-        if (!is_buffer_mapped(request))
+        struct musb_ep *musb_ep = request->ep;
+
+        if (!is_buffer_mapped(request) || !musb_ep->dma)
                 return;
 
         if (request->request.dma == DMA_ADDR_INVALID) {
@@ -195,7 +197,10 @@ __acquires(ep->musb->lock)
 
         ep->busy = 1;
         spin_unlock(&musb->lock);
-        unmap_dma_buffer(req, musb);
+
+        if (!dma_mapping_error(&musb->g.dev, request->dma))
+                unmap_dma_buffer(req, musb);
+
         if (request->status == 0)
                 dev_dbg(musb->controller, "%s done request %p,  %d/%d\n",
                                 ep->end_point.name, request,
diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig
index 65217a590068..90549382eba5 100644
--- a/drivers/usb/phy/Kconfig
+++ b/drivers/usb/phy/Kconfig
@@ -38,6 +38,7 @@ config USB_ISP1301
         tristate "NXP ISP1301 USB transceiver support"
         depends on USB || USB_GADGET
         depends on I2C
+        select USB_OTG_UTILS
         help
           Say Y here to add support for the NXP ISP1301 USB transceiver driver.
           This chip is typically used as USB transceiver for USB host, gadget
diff --git a/drivers/usb/serial/ark3116.c b/drivers/usb/serial/ark3116.c
index cbd904b8fba5..4775f8209e55 100644
--- a/drivers/usb/serial/ark3116.c
+++ b/drivers/usb/serial/ark3116.c
@@ -62,7 +62,6 @@ static int is_irda(struct usb_serial *serial)
 }
 
 struct ark3116_private {
-        wait_queue_head_t       delta_msr_wait;
         struct async_icount     icount;
         int                     irda;   /* 1 for irda device */
 
@@ -146,7 +145,6 @@ static int ark3116_port_probe(struct usb_serial_port *port)
         if (!priv)
                 return -ENOMEM;
 
-        init_waitqueue_head(&priv->delta_msr_wait);
         mutex_init(&priv->hw_lock);
         spin_lock_init(&priv->status_lock);
 
@@ -456,10 +454,14 @@ static int ark3116_ioctl(struct tty_struct *tty,
         case TIOCMIWAIT:
                 for (;;) {
                         struct async_icount prev = priv->icount;
-                        interruptible_sleep_on(&priv->delta_msr_wait);
+                        interruptible_sleep_on(&port->delta_msr_wait);
                         /* see if a signal did it */
                         if (signal_pending(current))
                                 return -ERESTARTSYS;
+
+                        if (port->serial->disconnected)
+                                return -EIO;
+
                         if ((prev.rng == priv->icount.rng) &&
                             (prev.dsr == priv->icount.dsr) &&
                             (prev.dcd == priv->icount.dcd) &&
@@ -580,7 +582,7 @@ static void ark3116_update_msr(struct usb_serial_port *port, __u8 msr)
                         priv->icount.dcd++;
                 if (msr & UART_MSR_TERI)
                         priv->icount.rng++;
-                wake_up_interruptible(&priv->delta_msr_wait);
+                wake_up_interruptible(&port->delta_msr_wait);
         }
 }
 
diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c
index d255f66e708e..07d4650a32ab 100644
--- a/drivers/usb/serial/ch341.c
+++ b/drivers/usb/serial/ch341.c
@@ -80,7 +80,6 @@ MODULE_DEVICE_TABLE(usb, id_table);
 
 struct ch341_private {
         spinlock_t lock; /* access lock */
-        wait_queue_head_t delta_msr_wait; /* wait queue for modem status */
         unsigned baud_rate; /* set baud rate */
         u8 line_control; /* set line control value RTS/DTR */
         u8 line_status; /* active status of modem control inputs */
@@ -252,7 +251,6 @@ static int ch341_port_probe(struct usb_serial_port *port)
                 return -ENOMEM;
 
         spin_lock_init(&priv->lock);
-        init_waitqueue_head(&priv->delta_msr_wait);
         priv->baud_rate = DEFAULT_BAUD_RATE;
         priv->line_control = CH341_BIT_RTS | CH341_BIT_DTR;
 
@@ -298,7 +296,7 @@ static void ch341_dtr_rts(struct usb_serial_port *port, int on)
                 priv->line_control &= ~(CH341_BIT_RTS | CH341_BIT_DTR);
         spin_unlock_irqrestore(&priv->lock, flags);
         ch341_set_handshake(port->serial->dev, priv->line_control);
-        wake_up_interruptible(&priv->delta_msr_wait);
+        wake_up_interruptible(&port->delta_msr_wait);
 }
 
 static void ch341_close(struct usb_serial_port *port)
@@ -491,7 +489,7 @@ static void ch341_read_int_callback(struct urb *urb)
                         tty_kref_put(tty);
                 }
 
-                wake_up_interruptible(&priv->delta_msr_wait);
+                wake_up_interruptible(&port->delta_msr_wait);
         }
 
 exit:
@@ -517,11 +515,14 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
         spin_unlock_irqrestore(&priv->lock, flags);
 
         while (!multi_change) {
-                interruptible_sleep_on(&priv->delta_msr_wait);
+                interruptible_sleep_on(&port->delta_msr_wait);
                 /* see if a signal did it */
                 if (signal_pending(current))
                         return -ERESTARTSYS;
 
+                if (port->serial->disconnected)
+                        return -EIO;
+
                 spin_lock_irqsave(&priv->lock, flags);
                 status = priv->line_status;
                 multi_change = priv->multi_status_change;
diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c
index 8efa19d0e9fb..ba7352e4187e 100644
--- a/drivers/usb/serial/cypress_m8.c
+++ b/drivers/usb/serial/cypress_m8.c
@@ -111,7 +111,6 @@ struct cypress_private {
         int baud_rate;                     /* stores current baud rate in
                                               integer form */
         int isthrottled;                   /* if throttled, discard reads */
-        wait_queue_head_t delta_msr_wait;  /* used for TIOCMIWAIT */
         char prev_status, diff_status;     /* used for TIOCMIWAIT */
         /* we pass a pointer to this as the argument sent to
            cypress_set_termios old_termios */
@@ -449,7 +448,6 @@ static int cypress_generic_port_probe(struct usb_serial_port *port)
                 kfree(priv);
                 return -ENOMEM;
         }
-        init_waitqueue_head(&priv->delta_msr_wait);
 
         usb_reset_configuration(serial->dev);
 
@@ -868,12 +866,16 @@ static int cypress_ioctl(struct tty_struct *tty,
         switch (cmd) {
         /* This code comes from drivers/char/serial.c and ftdi_sio.c */
         case TIOCMIWAIT:
-                while (priv != NULL) {
-                        interruptible_sleep_on(&priv->delta_msr_wait);
+                for (;;) {
+                        interruptible_sleep_on(&port->delta_msr_wait);
                         /* see if a signal did it */
                         if (signal_pending(current))
                                 return -ERESTARTSYS;
-                        else {
+
+                        if (port->serial->disconnected)
+                                return -EIO;
+
+                        {
                                 char diff = priv->diff_status;
                                 if (diff == 0)
                                         return -EIO; /* no change => error */
@@ -1187,7 +1189,7 @@ static void cypress_read_int_callback(struct urb *urb)
         if (priv->current_status != priv->prev_status) {
                 priv->diff_status |= priv->current_status ^
                         priv->prev_status;
-                wake_up_interruptible(&priv->delta_msr_wait);
+                wake_up_interruptible(&port->delta_msr_wait);
                 priv->prev_status = priv->current_status;
         }
         spin_unlock_irqrestore(&priv->lock, flags);
diff --git a/drivers/usb/serial/f81232.c b/drivers/usb/serial/f81232.c
index b1b2dc64b50b..a172ad5c5ce8 100644
--- a/drivers/usb/serial/f81232.c
+++ b/drivers/usb/serial/f81232.c
@@ -47,7 +47,6 @@ MODULE_DEVICE_TABLE(usb, id_table);
 
 struct f81232_private {
         spinlock_t lock;
-        wait_queue_head_t delta_msr_wait;
         u8 line_control;
         u8 line_status;
 };
@@ -111,7 +110,7 @@ static void f81232_process_read_urb(struct urb *urb)
         line_status = priv->line_status;
         priv->line_status &= ~UART_STATE_TRANSIENT_MASK;
         spin_unlock_irqrestore(&priv->lock, flags);
-        wake_up_interruptible(&priv->delta_msr_wait);
+        wake_up_interruptible(&port->delta_msr_wait);
 
         if (!urb->actual_length)
                 return;
@@ -256,11 +255,14 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
         spin_unlock_irqrestore(&priv->lock, flags);
 
         while (1) {
-                interruptible_sleep_on(&priv->delta_msr_wait);
+                interruptible_sleep_on(&port->delta_msr_wait);
                 /* see if a signal did it */
                 if (signal_pending(current))
                         return -ERESTARTSYS;
 
+                if (port->serial->disconnected)
+                        return -EIO;
+
                 spin_lock_irqsave(&priv->lock, flags);
                 status = priv->line_status;
                 spin_unlock_irqrestore(&priv->lock, flags);
@@ -322,7 +324,6 @@ static int f81232_port_probe(struct usb_serial_port *port)
                 return -ENOMEM;
 
         spin_lock_init(&priv->lock);
-        init_waitqueue_head(&priv->delta_msr_wait);
 
         usb_set_serial_port_data(port, priv);
 
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index edd162df49ca..9886180e45f1 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -69,9 +69,7 @@ struct ftdi_private {
         int flags;              /* some ASYNC_xxxx flags are supported */
         unsigned long last_dtr_rts;     /* saved modem control outputs */
         struct async_icount     icount;
-        wait_queue_head_t delta_msr_wait; /* Used for TIOCMIWAIT */
         char prev_status;        /* Used for TIOCMIWAIT */
-        bool dev_gone;        /* Used to abort TIOCMIWAIT */
         char transmit_empty;    /* If transmitter is empty or not */
         __u16 interface;        /* FT2232C, FT2232H or FT4232H port interface
                                    (0 for FT232/245) */
@@ -642,6 +640,7 @@ static struct usb_device_id id_table_combined [] = {
         { USB_DEVICE(FTDI_VID, FTDI_RM_CANVIEW_PID) },
         { USB_DEVICE(ACTON_VID, ACTON_SPECTRAPRO_PID) },
         { USB_DEVICE(CONTEC_VID, CONTEC_COM1USBH_PID) },
+        { USB_DEVICE(MITSUBISHI_VID, MITSUBISHI_FXUSB_PID) },
         { USB_DEVICE(BANDB_VID, BANDB_USOTL4_PID) },
         { USB_DEVICE(BANDB_VID, BANDB_USTL4_PID) },
         { USB_DEVICE(BANDB_VID, BANDB_USO9ML2_PID) },
@@ -1691,10 +1690,8 @@ static int ftdi_sio_port_probe(struct usb_serial_port *port)
 
         kref_init(&priv->kref);
         mutex_init(&priv->cfg_lock);
-        init_waitqueue_head(&priv->delta_msr_wait);
 
         priv->flags = ASYNC_LOW_LATENCY;
-        priv->dev_gone = false;
 
         if (quirk && quirk->port_probe)
                 quirk->port_probe(priv);
@@ -1840,8 +1837,7 @@ static int ftdi_sio_port_remove(struct usb_serial_port *port)
 {
         struct ftdi_private *priv = usb_get_serial_port_data(port);
 
-        priv->dev_gone = true;
-        wake_up_interruptible_all(&priv->delta_msr_wait);
+        wake_up_interruptible(&port->delta_msr_wait);
 
         remove_sysfs_attrs(port);
 
@@ -1989,7 +1985,7 @@ static int ftdi_process_packet(struct usb_serial_port *port,
                 if (diff_status & FTDI_RS0_RLSD)
                         priv->icount.dcd++;
 
-                wake_up_interruptible_all(&priv->delta_msr_wait);
+                wake_up_interruptible(&port->delta_msr_wait);
                 priv->prev_status = status;
         }
 
@@ -2440,11 +2436,15 @@ static int ftdi_ioctl(struct tty_struct *tty,
          */
         case TIOCMIWAIT:
                 cprev = priv->icount;
-                while (!priv->dev_gone) {
-                        interruptible_sleep_on(&priv->delta_msr_wait);
+                for (;;) {
+                        interruptible_sleep_on(&port->delta_msr_wait);
                         /* see if a signal did it */
                         if (signal_pending(current))
                                 return -ERESTARTSYS;
+
+                        if (port->serial->disconnected)
+                                return -EIO;
+
                         cnow = priv->icount;
                         if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
                             ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
@@ -2454,8 +2454,6 @@ static int ftdi_ioctl(struct tty_struct *tty,
                         }
                         cprev = cnow;
                 }
-                return -EIO;
-                break;
         case TIOCSERGETLSR:
                 return get_lsr_info(port, (struct serial_struct __user *)arg);
                 break;
diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h
index 9d359e189a64..e79861eeed4c 100644
--- a/drivers/usb/serial/ftdi_sio_ids.h
+++ b/drivers/usb/serial/ftdi_sio_ids.h
@@ -584,6 +584,13 @@
 #define CONTEC_COM1USBH_PID     0x8311  /* COM-1(USB)H */
 
 /*
+ * Mitsubishi Electric Corp. (http://www.meau.com)
+ * Submitted by Konstantin Holoborodko
+ */
+#define MITSUBISHI_VID          0x06D3
+#define MITSUBISHI_FXUSB_PID    0x0284 /* USB/RS422 converters: FX-USB-AW/-BD */
+
+/*
  * Definitions for B&B Electronics products.
  */
 #define BANDB_VID               0x0856  /* B&B Electronics Vendor ID */
diff --git a/drivers/usb/serial/garmin_gps.c b/drivers/usb/serial/garmin_gps.c
index 1a07b12ef341..81caf5623ee2 100644
--- a/drivers/usb/serial/garmin_gps.c
+++ b/drivers/usb/serial/garmin_gps.c
@@ -956,10 +956,7 @@ static void garmin_close(struct usb_serial_port *port)
         if (!serial)
                 return;
 
-        mutex_lock(&port->serial->disc_mutex);
-
-        if (!port->serial->disconnected)
-                garmin_clear(garmin_data_p);
+        garmin_clear(garmin_data_p);
 
         /* shutdown our urbs */
         usb_kill_urb(port->read_urb);
@@ -968,8 +965,6 @@ static void garmin_close(struct usb_serial_port *port)
         /* keep reset state so we know that we must start a new session */
         if (garmin_data_p->state != STATE_RESET)
                 garmin_data_p->state = STATE_DISCONNECTED;
-
-        mutex_unlock(&port->serial->disc_mutex);
 }
 
 
diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c
index b00e5cbf741f..efd8b978128c 100644
--- a/drivers/usb/serial/io_edgeport.c
+++ b/drivers/usb/serial/io_edgeport.c
@@ -110,7 +110,6 @@ struct edgeport_port {
         wait_queue_head_t       wait_chase;             /* for handling sleeping while waiting for chase to finish */
         wait_queue_head_t       wait_open;              /* for handling sleeping while waiting for open to finish */
         wait_queue_head_t       wait_command;           /* for handling sleeping while waiting for command to finish */
-        wait_queue_head_t       delta_msr_wait;         /* for handling sleeping while waiting for msr change to happen */
 
         struct async_icount     icount;
         struct usb_serial_port  *port;                  /* loop back to the owner of this object */
@@ -884,7 +883,6 @@ static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
         /* initialize our wait queues */
         init_waitqueue_head(&edge_port->wait_open);
         init_waitqueue_head(&edge_port->wait_chase);
-        init_waitqueue_head(&edge_port->delta_msr_wait);
         init_waitqueue_head(&edge_port->wait_command);
 
         /* initialize our icount structure */
@@ -1669,13 +1667,17 @@ static int edge_ioctl(struct tty_struct *tty,
                 dev_dbg(&port->dev, "%s (%d) TIOCMIWAIT\n", __func__,  port->number);
                 cprev = edge_port->icount;
                 while (1) {
-                        prepare_to_wait(&edge_port->delta_msr_wait,
+                        prepare_to_wait(&port->delta_msr_wait,
                                                 &wait, TASK_INTERRUPTIBLE);
                         schedule();
-                        finish_wait(&edge_port->delta_msr_wait, &wait);
+                        finish_wait(&port->delta_msr_wait, &wait);
                         /* see if a signal did it */
                         if (signal_pending(current))
                                 return -ERESTARTSYS;
+
+                        if (port->serial->disconnected)
+                                return -EIO;
+
                         cnow = edge_port->icount;
                         if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
                             cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
@@ -2051,7 +2053,7 @@ static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr)
                         icount->dcd++;
                 if (newMsr & EDGEPORT_MSR_DELTA_RI)
                         icount->rng++;
-                wake_up_interruptible(&edge_port->delta_msr_wait);
+                wake_up_interruptible(&edge_port->port->delta_msr_wait);
         }
 
         /* Save the new modem status */
diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c
index c23776679f70..7777172206de 100644
--- a/drivers/usb/serial/io_ti.c
+++ b/drivers/usb/serial/io_ti.c
@@ -87,9 +87,6 @@ struct edgeport_port {
         int close_pending;
         int lsr_event;
         struct async_icount     icount;
-        wait_queue_head_t       delta_msr_wait; /* for handling sleeping while
-                                                   waiting for msr change to
-                                                   happen */
         struct edgeport_serial  *edge_serial;
         struct usb_serial_port  *port;
         __u8 bUartMode;         /* Port type, 0: RS232, etc. */
@@ -1459,7 +1456,7 @@ static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr)
                         icount->dcd++;
                 if (msr & EDGEPORT_MSR_DELTA_RI)
                         icount->rng++;
-                wake_up_interruptible(&edge_port->delta_msr_wait);
+                wake_up_interruptible(&edge_port->port->delta_msr_wait);
         }
 
         /* Save the new modem status */
@@ -1754,7 +1751,6 @@ static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
         dev = port->serial->dev;
 
         memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount));
-        init_waitqueue_head(&edge_port->delta_msr_wait);
 
         /* turn off loopback */
         status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0);
@@ -2434,10 +2430,14 @@ static int edge_ioctl(struct tty_struct *tty,
                 dev_dbg(&port->dev, "%s - TIOCMIWAIT\n", __func__);
                 cprev = edge_port->icount;
                 while (1) {
-                        interruptible_sleep_on(&edge_port->delta_msr_wait);
+                        interruptible_sleep_on(&port->delta_msr_wait);
                         /* see if a signal did it */
                         if (signal_pending(current))
                                 return -ERESTARTSYS;
+
+                        if (port->serial->disconnected)
+                                return -EIO;
+
                         cnow = edge_port->icount;
                         if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
                             cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
@@ -2649,6 +2649,7 @@ static struct usb_serial_driver edgeport_2port_device = {
         .set_termios            = edge_set_termios,
         .tiocmget               = edge_tiocmget,
         .tiocmset               = edge_tiocmset,
+        .get_icount             = edge_get_icount,
         .write                  = edge_write,
         .write_room             = edge_write_room,
         .chars_in_buffer        = edge_chars_in_buffer,
diff --git a/drivers/usb/serial/mct_u232.c b/drivers/usb/serial/mct_u232.c
index a64d420f687b..06d5a60be2c4 100644
--- a/drivers/usb/serial/mct_u232.c
+++ b/drivers/usb/serial/mct_u232.c
@@ -114,8 +114,6 @@ struct mct_u232_private {
         unsigned char        last_msr;      /* Modem Status Register */
         unsigned int         rx_flags;      /* Throttling flags */
         struct async_icount  icount;
-        wait_queue_head_t    msr_wait;  /* for handling sleeping while waiting
-                                                for msr change to happen */
 };
 
 #define THROTTLED               0x01
@@ -409,7 +407,6 @@ static int mct_u232_port_probe(struct usb_serial_port *port)
                 return -ENOMEM;
 
         spin_lock_init(&priv->lock);
-        init_waitqueue_head(&priv->msr_wait);
 
         usb_set_serial_port_data(port, priv);
 
@@ -601,7 +598,7 @@ static void mct_u232_read_int_callback(struct urb *urb)
                 tty_kref_put(tty);
         }
 #endif
-        wake_up_interruptible(&priv->msr_wait);
+        wake_up_interruptible(&port->delta_msr_wait);
         spin_unlock_irqrestore(&priv->lock, flags);
 exit:
         retval = usb_submit_urb(urb, GFP_ATOMIC);
@@ -810,13 +807,17 @@ static int  mct_u232_ioctl(struct tty_struct *tty,
                 cprev = mct_u232_port->icount;
                 spin_unlock_irqrestore(&mct_u232_port->lock, flags);
                 for ( ; ; ) {
-                        prepare_to_wait(&mct_u232_port->msr_wait,
+                        prepare_to_wait(&port->delta_msr_wait,
                                         &wait, TASK_INTERRUPTIBLE);
                         schedule();
-                        finish_wait(&mct_u232_port->msr_wait, &wait);
+                        finish_wait(&port->delta_msr_wait, &wait);
                         /* see if a signal did it */
                         if (signal_pending(current))
                                 return -ERESTARTSYS;
+
+                        if (port->serial->disconnected)
+                                return -EIO;
+
                         spin_lock_irqsave(&mct_u232_port->lock, flags);
                         cnow = mct_u232_port->icount;
                         spin_unlock_irqrestore(&mct_u232_port->lock, flags);
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
index 809fb329eca5..b8051fa61911 100644
--- a/drivers/usb/serial/mos7840.c
+++ b/drivers/usb/serial/mos7840.c
@@ -219,7 +219,6 @@ struct moschip_port {
         char open;
         char open_ports;
         wait_queue_head_t wait_chase;   /* for handling sleeping while waiting for chase to finish */
-        wait_queue_head_t delta_msr_wait;       /* for handling sleeping while waiting for msr change to happen */
         int delta_msr_cond;
         struct async_icount icount;
         struct usb_serial_port *port;   /* loop back to the owner of this object */
@@ -423,6 +422,9 @@ static void mos7840_handle_new_msr(struct moschip_port *port, __u8 new_msr)
                         icount->rng++;
                         smp_wmb();
                 }
+
+                mos7840_port->delta_msr_cond = 1;
+                wake_up_interruptible(&port->port->delta_msr_wait);
         }
 }
 
@@ -1127,7 +1129,6 @@ static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port)
 
         /* initialize our wait queues */
         init_waitqueue_head(&mos7840_port->wait_chase);
-        init_waitqueue_head(&mos7840_port->delta_msr_wait);
 
         /* initialize our icount structure */
         memset(&(mos7840_port->icount), 0x00, sizeof(mos7840_port->icount));
@@ -2017,8 +2018,6 @@ static void mos7840_change_port_settings(struct tty_struct *tty,
                         mos7840_port->read_urb_busy = false;
                 }
         }
-        wake_up(&mos7840_port->delta_msr_wait);
-        mos7840_port->delta_msr_cond = 1;
         dev_dbg(&port->dev, "%s - mos7840_port->shadowLCR is End %x\n", __func__,
                 mos7840_port->shadowLCR);
 }
@@ -2219,13 +2218,18 @@ static int mos7840_ioctl(struct tty_struct *tty,
                 while (1) {
                         /* interruptible_sleep_on(&mos7840_port->delta_msr_wait); */
                         mos7840_port->delta_msr_cond = 0;
-                        wait_event_interruptible(mos7840_port->delta_msr_wait,
-                                                 (mos7840_port->
+                        wait_event_interruptible(port->delta_msr_wait,
+                                                 (port->serial->disconnected ||
+                                                  mos7840_port->
                                                   delta_msr_cond == 1));
 
                         /* see if a signal did it */
                         if (signal_pending(current))
                                 return -ERESTARTSYS;
+
+                        if (port->serial->disconnected)
+                                return -EIO;
+
                         cnow = mos7840_port->icount;
                         smp_rmb();
                         if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
diff --git a/drivers/usb/serial/oti6858.c b/drivers/usb/serial/oti6858.c
index a958fd41b5b3..87c71ccfee87 100644
--- a/drivers/usb/serial/oti6858.c
+++ b/drivers/usb/serial/oti6858.c
@@ -188,7 +188,6 @@ struct oti6858_private {
         u8 setup_done;
         struct delayed_work delayed_setup_work;
 
-        wait_queue_head_t intr_wait;
         struct usb_serial_port *port;   /* USB port with which associated */
 };
 
@@ -339,7 +338,6 @@ static int oti6858_port_probe(struct usb_serial_port *port)
                 return -ENOMEM;
 
         spin_lock_init(&priv->lock);
-        init_waitqueue_head(&priv->intr_wait);
         priv->port = port;
         INIT_DELAYED_WORK(&priv->delayed_setup_work, setup_line);
         INIT_DELAYED_WORK(&priv->delayed_write_work, send_data);
@@ -664,11 +662,15 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
         spin_unlock_irqrestore(&priv->lock, flags);
 
         while (1) {
-                wait_event_interruptible(priv->intr_wait,
+                wait_event_interruptible(port->delta_msr_wait,
+                                        port->serial->disconnected ||
                                         priv->status.pin_state != prev);
                 if (signal_pending(current))
                         return -ERESTARTSYS;
 
+                if (port->serial->disconnected)
+                        return -EIO;
+
                 spin_lock_irqsave(&priv->lock, flags);
                 status = priv->status.pin_state & PIN_MASK;
                 spin_unlock_irqrestore(&priv->lock, flags);
@@ -763,7 +765,7 @@ static void oti6858_read_int_callback(struct urb *urb)
 
                 if (!priv->transient) {
                         if (xs->pin_state != priv->status.pin_state)
-                                wake_up_interruptible(&priv->intr_wait);
+                                wake_up_interruptible(&port->delta_msr_wait);
                         memcpy(&priv->status, xs, OTI6858_CTRL_PKT_SIZE);
                 }
 
diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
index 54adc9125e5c..3b10018d89a3 100644
--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -139,7 +139,6 @@ struct pl2303_serial_private {
 
 struct pl2303_private {
         spinlock_t lock;
-        wait_queue_head_t delta_msr_wait;
         u8 line_control;
         u8 line_status;
 };
@@ -233,7 +232,6 @@ static int pl2303_port_probe(struct usb_serial_port *port)
                 return -ENOMEM;
 
         spin_lock_init(&priv->lock);
-        init_waitqueue_head(&priv->delta_msr_wait);
 
         usb_set_serial_port_data(port, priv);
 
@@ -607,11 +605,14 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
         spin_unlock_irqrestore(&priv->lock, flags);
 
         while (1) {
-                interruptible_sleep_on(&priv->delta_msr_wait);
+                interruptible_sleep_on(&port->delta_msr_wait);
                 /* see if a signal did it */
                 if (signal_pending(current))
                         return -ERESTARTSYS;
 
+                if (port->serial->disconnected)
+                        return -EIO;
+
                 spin_lock_irqsave(&priv->lock, flags);
                 status = priv->line_status;
                 spin_unlock_irqrestore(&priv->lock, flags);
@@ -719,7 +720,7 @@ static void pl2303_update_line_status(struct usb_serial_port *port,
         spin_unlock_irqrestore(&priv->lock, flags);
         if (priv->line_status & UART_BREAK_ERROR)
                 usb_serial_handle_break(port);
-        wake_up_interruptible(&priv->delta_msr_wait);
+        wake_up_interruptible(&port->delta_msr_wait);
 
         tty = tty_port_tty_get(&port->port);
         if (!tty)
@@ -783,7 +784,7 @@ static void pl2303_process_read_urb(struct urb *urb)
         line_status = priv->line_status;
         priv->line_status &= ~UART_STATE_TRANSIENT_MASK;
         spin_unlock_irqrestore(&priv->lock, flags);
-        wake_up_interruptible(&priv->delta_msr_wait);
+        wake_up_interruptible(&port->delta_msr_wait);
 
         if (!urb->actual_length)
                 return;
diff --git a/drivers/usb/serial/quatech2.c b/drivers/usb/serial/quatech2.c
index d643a4d4d770..75f125ddb0c9 100644
--- a/drivers/usb/serial/quatech2.c
+++ b/drivers/usb/serial/quatech2.c
@@ -128,7 +128,6 @@ struct qt2_port_private {
         u8          shadowLSR;
         u8          shadowMSR;
 
-        wait_queue_head_t   delta_msr_wait; /* Used for TIOCMIWAIT */
         struct async_icount icount;
 
         struct usb_serial_port *port;
@@ -506,8 +505,9 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
         spin_unlock_irqrestore(&priv->lock, flags);
 
         while (1) {
-                wait_event_interruptible(priv->delta_msr_wait,
-                                         ((priv->icount.rng != prev.rng) ||
+                wait_event_interruptible(port->delta_msr_wait,
+                                         (port->serial->disconnected ||
+                                          (priv->icount.rng != prev.rng) ||
                                           (priv->icount.dsr != prev.dsr) ||
                                           (priv->icount.dcd != prev.dcd) ||
                                           (priv->icount.cts != prev.cts)));
@@ -515,6 +515,9 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
                 if (signal_pending(current))
                         return -ERESTARTSYS;
 
+                if (port->serial->disconnected)
+                        return -EIO;
+
                 spin_lock_irqsave(&priv->lock, flags);
                 cur = priv->icount;
                 spin_unlock_irqrestore(&priv->lock, flags);
@@ -827,7 +830,6 @@ static int qt2_port_probe(struct usb_serial_port *port)
 
         spin_lock_init(&port_priv->lock);
         spin_lock_init(&port_priv->urb_lock);
-        init_waitqueue_head(&port_priv->delta_msr_wait);
         port_priv->port = port;
 
         port_priv->write_urb = usb_alloc_urb(0, GFP_KERNEL);
@@ -970,7 +972,7 @@ static void qt2_update_msr(struct usb_serial_port *port, unsigned char *ch)
                 if (newMSR & UART_MSR_TERI)
                         port_priv->icount.rng++;
 
-                wake_up_interruptible(&port_priv->delta_msr_wait);
+                wake_up_interruptible(&port->delta_msr_wait);
         }
 }
 
diff --git a/drivers/usb/serial/spcp8x5.c b/drivers/usb/serial/spcp8x5.c
index 91ff8e3bddbd..549ef68ff5fa 100644
--- a/drivers/usb/serial/spcp8x5.c
+++ b/drivers/usb/serial/spcp8x5.c
@@ -149,7 +149,6 @@ enum spcp8x5_type {
 struct spcp8x5_private {
         spinlock_t      lock;
         enum spcp8x5_type       type;
-        wait_queue_head_t       delta_msr_wait;
         u8                      line_control;
         u8                      line_status;
 };
@@ -179,7 +178,6 @@ static int spcp8x5_port_probe(struct usb_serial_port *port)
                 return -ENOMEM;
 
         spin_lock_init(&priv->lock);
-        init_waitqueue_head(&priv->delta_msr_wait);
         priv->type = type;
 
         usb_set_serial_port_data(port , priv);
@@ -475,7 +473,7 @@ static void spcp8x5_process_read_urb(struct urb *urb)
         priv->line_status &= ~UART_STATE_TRANSIENT_MASK;
         spin_unlock_irqrestore(&priv->lock, flags);
         /* wake up the wait for termios */
-        wake_up_interruptible(&priv->delta_msr_wait);
+        wake_up_interruptible(&port->delta_msr_wait);
 
         if (!urb->actual_length)
                 return;
@@ -526,12 +524,15 @@ static int spcp8x5_wait_modem_info(struct usb_serial_port *port,
 
         while (1) {
                 /* wake up in bulk read */
-                interruptible_sleep_on(&priv->delta_msr_wait);
+                interruptible_sleep_on(&port->delta_msr_wait);
 
                 /* see if a signal did it */
                 if (signal_pending(current))
                         return -ERESTARTSYS;
 
+                if (port->serial->disconnected)
+                        return -EIO;
+
                 spin_lock_irqsave(&priv->lock, flags);
                 status = priv->line_status;
                 spin_unlock_irqrestore(&priv->lock, flags);
diff --git a/drivers/usb/serial/ssu100.c b/drivers/usb/serial/ssu100.c
index b57cf841c5b6..4b2a19757b4d 100644
--- a/drivers/usb/serial/ssu100.c
+++ b/drivers/usb/serial/ssu100.c
@@ -61,7 +61,6 @@ struct ssu100_port_private {
         spinlock_t status_lock;
         u8 shadowLSR;
         u8 shadowMSR;
-        wait_queue_head_t delta_msr_wait; /* Used for TIOCMIWAIT */
         struct async_icount icount;
 };
 
@@ -355,8 +354,9 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
         spin_unlock_irqrestore(&priv->status_lock, flags);
 
         while (1) {
-                wait_event_interruptible(priv->delta_msr_wait,
-                                         ((priv->icount.rng != prev.rng) ||
+                wait_event_interruptible(port->delta_msr_wait,
+                                         (port->serial->disconnected ||
+                                          (priv->icount.rng != prev.rng) ||
                                           (priv->icount.dsr != prev.dsr) ||
                                           (priv->icount.dcd != prev.dcd) ||
                                           (priv->icount.cts != prev.cts)));
@@ -364,6 +364,9 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
                 if (signal_pending(current))
                         return -ERESTARTSYS;
 
+                if (port->serial->disconnected)
+                        return -EIO;
+
                 spin_lock_irqsave(&priv->status_lock, flags);
                 cur = priv->icount;
                 spin_unlock_irqrestore(&priv->status_lock, flags);
@@ -445,7 +448,6 @@ static int ssu100_port_probe(struct usb_serial_port *port)
                 return -ENOMEM;
 
         spin_lock_init(&priv->status_lock);
-        init_waitqueue_head(&priv->delta_msr_wait);
 
         usb_set_serial_port_data(port, priv);
 
@@ -537,7 +539,7 @@ static void ssu100_update_msr(struct usb_serial_port *port, u8 msr)
                         priv->icount.dcd++;
                 if (msr & UART_MSR_TERI)
                         priv->icount.rng++;
-                wake_up_interruptible(&priv->delta_msr_wait);
+                wake_up_interruptible(&port->delta_msr_wait);
         }
 }
 
diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c
index 39cb9b807c3c..73deb029fc05 100644
--- a/drivers/usb/serial/ti_usb_3410_5052.c
+++ b/drivers/usb/serial/ti_usb_3410_5052.c
@@ -74,7 +74,6 @@ struct ti_port {
         int                     tp_flags;
         int                     tp_closing_wait;/* in .01 secs */
         struct async_icount     tp_icount;
-        wait_queue_head_t       tp_msr_wait;    /* wait for msr change */
         wait_queue_head_t       tp_write_wait;
         struct ti_device        *tp_tdev;
         struct usb_serial_port  *tp_port;
@@ -432,7 +431,6 @@ static int ti_port_probe(struct usb_serial_port *port)
         else
                 tport->tp_uart_base_addr = TI_UART2_BASE_ADDR;
         tport->tp_closing_wait = closing_wait;
-        init_waitqueue_head(&tport->tp_msr_wait);
         init_waitqueue_head(&tport->tp_write_wait);
         if (kfifo_alloc(&tport->write_fifo, TI_WRITE_BUF_SIZE, GFP_KERNEL)) {
                 kfree(tport);
@@ -784,9 +782,13 @@ static int ti_ioctl(struct tty_struct *tty,
                 dev_dbg(&port->dev, "%s - TIOCMIWAIT\n", __func__);
                 cprev = tport->tp_icount;
                 while (1) {
-                        interruptible_sleep_on(&tport->tp_msr_wait);
+                        interruptible_sleep_on(&port->delta_msr_wait);
                         if (signal_pending(current))
                                 return -ERESTARTSYS;
+
+                        if (port->serial->disconnected)
+                                return -EIO;
+
                         cnow = tport->tp_icount;
                         if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
                             cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
@@ -1392,7 +1394,7 @@ static void ti_handle_new_msr(struct ti_port *tport, __u8 msr)
                         icount->dcd++;
                 if (msr & TI_MSR_DELTA_RI)
                         icount->rng++;
-                wake_up_interruptible(&tport->tp_msr_wait);
+                wake_up_interruptible(&tport->tp_port->delta_msr_wait);
                 spin_unlock_irqrestore(&tport->tp_lock, flags);
         }
 
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index a19ed74d770d..5d9b178484fd 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -151,6 +151,7 @@ static void destroy_serial(struct kref *kref)
                 }
         }
 
+        usb_put_intf(serial->interface);
         usb_put_dev(serial->dev);
         kfree(serial);
 }
@@ -620,7 +621,7 @@ static struct usb_serial *create_serial(struct usb_device *dev,
         }
         serial->dev = usb_get_dev(dev);
         serial->type = driver;
-        serial->interface = interface;
+        serial->interface = usb_get_intf(interface);
         kref_init(&serial->kref);
         mutex_init(&serial->disc_mutex);
         serial->minor = SERIAL_TTY_NO_MINOR;
@@ -902,6 +903,7 @@ static int usb_serial_probe(struct usb_interface *interface,
                 port->port.ops = &serial_port_ops;
                 port->serial = serial;
                 spin_lock_init(&port->lock);
+                init_waitqueue_head(&port->delta_msr_wait);
                 /* Keep this for private driver use for the moment but
                    should probably go away */
                 INIT_WORK(&port->work, usb_serial_port_work);
diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h
index da04a074e790..1799335288bd 100644
--- a/drivers/usb/storage/unusual_devs.h
+++ b/drivers/usb/storage/unusual_devs.h
@@ -496,6 +496,13 @@ UNUSUAL_DEV(  0x04e8, 0x5122, 0x0000, 0x9999,
                 USB_SC_DEVICE, USB_PR_DEVICE, NULL,
                 US_FL_MAX_SECTORS_64 | US_FL_BULK_IGNORE_TAG),
 
+/* Added by Dmitry Artamonow <mad_soft@inbox.ru> */
+UNUSUAL_DEV(  0x04e8, 0x5136, 0x0000, 0x9999,
+                "Samsung",
+                "YP-Z3",
+                USB_SC_DEVICE, USB_PR_DEVICE, NULL,
+                US_FL_MAX_SECTORS_64),
+
 /* Entry and supporting patch by Theodore Kilgore <kilgota@auburn.edu>.
  * Device uses standards-violating 32-byte Bulk Command Block Wrappers and
  * reports itself as "Proprietary SCSI Bulk." Cf. device entry 0x084d:0x0011.
diff --git a/drivers/vfio/pci/vfio_pci_config.c b/drivers/vfio/pci/vfio_pci_config.c
index 964ff22bf281..aeb00fc2d3be 100644
--- a/drivers/vfio/pci/vfio_pci_config.c
+++ b/drivers/vfio/pci/vfio_pci_config.c
@@ -27,6 +27,7 @@
 #include <linux/pci.h>
 #include <linux/uaccess.h>
 #include <linux/vfio.h>
+#include <linux/slab.h>
 
 #include "vfio_pci_private.h"
 
diff --git a/drivers/vfio/pci/vfio_pci_intrs.c b/drivers/vfio/pci/vfio_pci_intrs.c
index 3639371fa697..a96509187deb 100644
--- a/drivers/vfio/pci/vfio_pci_intrs.c
+++ b/drivers/vfio/pci/vfio_pci_intrs.c
@@ -22,6 +22,7 @@
 #include <linux/vfio.h>
 #include <linux/wait.h>
 #include <linux/workqueue.h>
+#include <linux/slab.h>
 
 #include "vfio_pci_private.h"
 
diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index 959b1cd89e6a..ec6fb3fa59bb 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -339,7 +339,8 @@ static void handle_tx(struct vhost_net *net)
                                 msg.msg_controllen = 0;
                                 ubufs = NULL;
                         } else {
-                                struct ubuf_info *ubuf = &vq->ubuf_info[head];
+                                struct ubuf_info *ubuf;
+                                ubuf = vq->ubuf_info + vq->upend_idx;
 
                                 vq->heads[vq->upend_idx].len =
                                         VHOST_DMA_IN_PROGRESS;
diff --git a/drivers/vhost/tcm_vhost.c b/drivers/vhost/tcm_vhost.c
index 9951297b2427..2968b4934659 100644
--- a/drivers/vhost/tcm_vhost.c
+++ b/drivers/vhost/tcm_vhost.c
@@ -60,6 +60,15 @@ enum {
         VHOST_SCSI_VQ_IO = 2,
 };
 
+/*
+ * VIRTIO_RING_F_EVENT_IDX seems broken. Not sure the bug is in
+ * kernel but disabling it helps.
+ * TODO: debug and remove the workaround.
+ */
+enum {
+        VHOST_SCSI_FEATURES = VHOST_FEATURES & (~VIRTIO_RING_F_EVENT_IDX)
+};
+
 #define VHOST_SCSI_MAX_TARGET   256
 #define VHOST_SCSI_MAX_VQ       128
 
@@ -850,7 +859,7 @@ static int vhost_scsi_clear_endpoint(
         for (index = 0; index < vs->dev.nvqs; ++index) {
                 if (!vhost_vq_access_ok(&vs->vqs[index])) {
                         ret = -EFAULT;
-                        goto err;
+                        goto err_dev;
                 }
         }
         for (i = 0; i < VHOST_SCSI_MAX_TARGET; i++) {
@@ -860,10 +869,11 @@ static int vhost_scsi_clear_endpoint(
                 if (!tv_tpg)
                         continue;
 
+                mutex_lock(&tv_tpg->tv_tpg_mutex);
                 tv_tport = tv_tpg->tport;
                 if (!tv_tport) {
                         ret = -ENODEV;
-                        goto err;
+                        goto err_tpg;
                 }
 
                 if (strcmp(tv_tport->tport_name, t->vhost_wwpn)) {
@@ -872,16 +882,19 @@ static int vhost_scsi_clear_endpoint(
                                 tv_tport->tport_name, tv_tpg->tport_tpgt,
                                 t->vhost_wwpn, t->vhost_tpgt);
                         ret = -EINVAL;
-                        goto err;
+                        goto err_tpg;
                 }
                 tv_tpg->tv_tpg_vhost_count--;
                 vs->vs_tpg[target] = NULL;
                 vs->vs_endpoint = false;
+                mutex_unlock(&tv_tpg->tv_tpg_mutex);
         }
         mutex_unlock(&vs->dev.mutex);
         return 0;
 
-err:
+err_tpg:
+        mutex_unlock(&tv_tpg->tv_tpg_mutex);
+err_dev:
         mutex_unlock(&vs->dev.mutex);
         return ret;
 }
@@ -937,11 +950,12 @@ static void vhost_scsi_flush(struct vhost_scsi *vs)
 
         for (i = 0; i < VHOST_SCSI_MAX_VQ; i++)
                 vhost_scsi_flush_vq(vs, i);
+        vhost_work_flush(&vs->dev, &vs->vs_completion_work);
 }
 
 static int vhost_scsi_set_features(struct vhost_scsi *vs, u64 features)
 {
-        if (features & ~VHOST_FEATURES)
+        if (features & ~VHOST_SCSI_FEATURES)
                 return -EOPNOTSUPP;
 
         mutex_lock(&vs->dev.mutex);
@@ -987,7 +1001,7 @@ static long vhost_scsi_ioctl(struct file *f, unsigned int ioctl,
                         return -EFAULT;
                 return 0;
         case VHOST_GET_FEATURES:
-                features = VHOST_FEATURES;
+                features = VHOST_SCSI_FEATURES;
                 if (copy_to_user(featurep, &features, sizeof features))
                         return -EFAULT;
                 return 0;
diff --git a/drivers/video/atmel_lcdfb.c b/drivers/video/atmel_lcdfb.c
index 12cf5f31ee8f..025428e04c33 100644
--- a/drivers/video/atmel_lcdfb.c
+++ b/drivers/video/atmel_lcdfb.c
@@ -422,17 +422,22 @@ static int atmel_lcdfb_check_var(struct fb_var_screeninfo *var,
                         = var->bits_per_pixel;
                 break;
         case 16:
+                /* Older SOCs use IBGR:555 rather than BGR:565. */
+                if (sinfo->have_intensity_bit)
+                        var->green.length = 5;
+                else
+                        var->green.length = 6;
+
                 if (sinfo->lcd_wiring_mode == ATMEL_LCDC_WIRING_RGB) {
-                        /* RGB:565 mode */
-                        var->red.offset = 11;
+                        /* RGB:5X5 mode */
+                        var->red.offset = var->green.length + 5;
                         var->blue.offset = 0;
                 } else {
-                        /* BGR:565 mode */
+                        /* BGR:5X5 mode */
                         var->red.offset = 0;
-                        var->blue.offset = 11;
+                        var->blue.offset = var->green.length + 5;
                 }
                 var->green.offset = 5;
-                var->green.length = 6;
                 var->red.length = var->blue.length = 5;
                 break;
         case 32:
@@ -679,8 +684,7 @@ static int atmel_lcdfb_setcolreg(unsigned int regno, unsigned int red,
 
         case FB_VISUAL_PSEUDOCOLOR:
                 if (regno < 256) {
-                        if (cpu_is_at91sam9261() || cpu_is_at91sam9263()
-                            || cpu_is_at91sam9rl()) {
+                        if (sinfo->have_intensity_bit) {
                                 /* old style I+BGR:555 */
                                 val  = ((red   >> 11) & 0x001f);
                                 val |= ((green >>  6) & 0x03e0);
@@ -870,6 +874,10 @@ static int __init atmel_lcdfb_probe(struct platform_device *pdev)
         }
         sinfo->info = info;
         sinfo->pdev = pdev;
+        if (cpu_is_at91sam9261() || cpu_is_at91sam9263() ||
+                                                        cpu_is_at91sam9rl()) {
+                sinfo->have_intensity_bit = true;
+        }
 
         strcpy(info->fix.id, sinfo->pdev->name);
         info->flags = ATMEL_LCDFB_FBINFO_DEFAULT;
diff --git a/drivers/video/ep93xx-fb.c b/drivers/video/ep93xx-fb.c
index 3f2519d30715..e06cd5d90c97 100644
--- a/drivers/video/ep93xx-fb.c
+++ b/drivers/video/ep93xx-fb.c
@@ -23,6 +23,7 @@
 #include <linux/slab.h>
 #include <linux/clk.h>
 #include <linux/fb.h>
+#include <linux/io.h>
 
 #include <linux/platform_data/video-ep93xx.h>
 
diff --git a/drivers/video/mxsfb.c b/drivers/video/mxsfb.c
index 755556ca5b2d..45169cbaba6e 100644
--- a/drivers/video/mxsfb.c
+++ b/drivers/video/mxsfb.c
@@ -169,6 +169,7 @@ struct mxsfb_info {
         unsigned dotclk_delay;
         const struct mxsfb_devdata *devdata;
         int mapped;
+        u32 sync;
 };
 
 #define mxsfb_is_v3(host) (host->devdata->ipversion == 3)
@@ -456,9 +457,9 @@ static int mxsfb_set_par(struct fb_info *fb_info)
                 vdctrl0 |= VDCTRL0_HSYNC_ACT_HIGH;
         if (fb_info->var.sync & FB_SYNC_VERT_HIGH_ACT)
                 vdctrl0 |= VDCTRL0_VSYNC_ACT_HIGH;
-        if (fb_info->var.sync & FB_SYNC_DATA_ENABLE_HIGH_ACT)
+        if (host->sync & MXSFB_SYNC_DATA_ENABLE_HIGH_ACT)
                 vdctrl0 |= VDCTRL0_ENABLE_ACT_HIGH;
-        if (fb_info->var.sync & FB_SYNC_DOTCLK_FAILING_ACT)
+        if (host->sync & MXSFB_SYNC_DOTCLK_FAILING_ACT)
                 vdctrl0 |= VDCTRL0_DOTCLK_ACT_FAILING;
 
         writel(vdctrl0, host->base + LCDC_VDCTRL0);
@@ -861,6 +862,8 @@ static int mxsfb_probe(struct platform_device *pdev)
 
         INIT_LIST_HEAD(&fb_info->modelist);
 
+        host->sync = pdata->sync;
+
         ret = mxsfb_init_fbinfo(host);
         if (ret != 0)
                 goto error_init_fb;
diff --git a/drivers/video/omap/omapfb_main.c b/drivers/video/omap/omapfb_main.c
index e31f5b33b501..d40612c31a98 100644
--- a/drivers/video/omap/omapfb_main.c
+++ b/drivers/video/omap/omapfb_main.c
@@ -32,6 +32,8 @@
 
 #include <linux/omap-dma.h>
 
+#include <mach/hardware.h>
+
 #include "omapfb.h"
 #include "lcdc.h"
 
diff --git a/drivers/video/omap2/displays/panel-tpo-td043mtea1.c b/drivers/video/omap2/displays/panel-tpo-td043mtea1.c
index 6b6643911d29..048c98381ef6 100644
--- a/drivers/video/omap2/displays/panel-tpo-td043mtea1.c
+++ b/drivers/video/omap2/displays/panel-tpo-td043mtea1.c
@@ -63,6 +63,9 @@ struct tpo_td043_device {
         u32 power_on_resume:1;
 };
 
+/* used to pass spi_device from SPI to DSS portion of the driver */
+static struct tpo_td043_device *g_tpo_td043;
+
 static int tpo_td043_write(struct spi_device *spi, u8 addr, u8 data)
 {
         struct spi_message      m;
@@ -403,7 +406,7 @@ static void tpo_td043_disable(struct omap_dss_device *dssdev)
 
 static int tpo_td043_probe(struct omap_dss_device *dssdev)
 {
-        struct tpo_td043_device *tpo_td043 = dev_get_drvdata(&dssdev->dev);
+        struct tpo_td043_device *tpo_td043 = g_tpo_td043;
         int nreset_gpio = dssdev->reset_gpio;
         int ret = 0;
 
@@ -440,6 +443,8 @@ static int tpo_td043_probe(struct omap_dss_device *dssdev)
         if (ret)
                 dev_warn(&dssdev->dev, "failed to create sysfs files\n");
 
+        dev_set_drvdata(&dssdev->dev, tpo_td043);
+
         return 0;
 
 fail_gpio_req:
@@ -505,6 +510,9 @@ static int tpo_td043_spi_probe(struct spi_device *spi)
                 return -ENODEV;
         }
 
+        if (g_tpo_td043 != NULL)
+                return -EBUSY;
+
         spi->bits_per_word = 16;
         spi->mode = SPI_MODE_0;
 
@@ -521,7 +529,7 @@ static int tpo_td043_spi_probe(struct spi_device *spi)
         tpo_td043->spi = spi;
         tpo_td043->nreset_gpio = dssdev->reset_gpio;
         dev_set_drvdata(&spi->dev, tpo_td043);
-        dev_set_drvdata(&dssdev->dev, tpo_td043);
+        g_tpo_td043 = tpo_td043;
 
         omap_dss_register_driver(&tpo_td043_driver);
 
@@ -534,6 +542,7 @@ static int tpo_td043_spi_remove(struct spi_device *spi)
 
         omap_dss_unregister_driver(&tpo_td043_driver);
         kfree(tpo_td043);
+        g_tpo_td043 = NULL;
 
         return 0;
 }
diff --git a/drivers/video/omap2/dss/dss_features.c b/drivers/video/omap2/dss/dss_features.c
index d7d66ef5cb58..7f791aeda4d2 100644
--- a/drivers/video/omap2/dss/dss_features.c
+++ b/drivers/video/omap2/dss/dss_features.c
@@ -202,12 +202,10 @@ static const enum omap_dss_output_id omap3630_dss_supported_outputs[] = {
 
 static const enum omap_dss_output_id omap4_dss_supported_outputs[] = {
         /* OMAP_DSS_CHANNEL_LCD */
-        OMAP_DSS_OUTPUT_DPI | OMAP_DSS_OUTPUT_DBI |
-        OMAP_DSS_OUTPUT_DSI1,
+        OMAP_DSS_OUTPUT_DBI | OMAP_DSS_OUTPUT_DSI1,
 
         /* OMAP_DSS_CHANNEL_DIGIT */
-        OMAP_DSS_OUTPUT_VENC | OMAP_DSS_OUTPUT_HDMI |
-        OMAP_DSS_OUTPUT_DPI,
+        OMAP_DSS_OUTPUT_VENC | OMAP_DSS_OUTPUT_HDMI,
 
         /* OMAP_DSS_CHANNEL_LCD2 */
         OMAP_DSS_OUTPUT_DPI | OMAP_DSS_OUTPUT_DBI |
diff --git a/drivers/watchdog/sp5100_tco.c b/drivers/watchdog/sp5100_tco.c
index e3b8f757d2d3..0e9d8c479c35 100644
--- a/drivers/watchdog/sp5100_tco.c
+++ b/drivers/watchdog/sp5100_tco.c
@@ -40,13 +40,12 @@
 #include "sp5100_tco.h"
 
 /* Module and version information */
-#define TCO_VERSION "0.03"
+#define TCO_VERSION "0.05"
 #define TCO_MODULE_NAME "SP5100 TCO timer"
 #define TCO_DRIVER_NAME   TCO_MODULE_NAME ", v" TCO_VERSION
 
 /* internal variables */
 static u32 tcobase_phys;
-static u32 resbase_phys;
 static u32 tco_wdt_fired;
 static void __iomem *tcobase;
 static unsigned int pm_iobase;
@@ -54,10 +53,6 @@ static DEFINE_SPINLOCK(tco_lock);	/* Guards the hardware */
 static unsigned long timer_alive;
 static char tco_expect_close;
 static struct pci_dev *sp5100_tco_pci;
-static struct resource wdt_res = {
-        .name = "Watchdog Timer",
-        .flags = IORESOURCE_MEM,
-};
 
 /* the watchdog platform device */
 static struct platform_device *sp5100_tco_platform_device;
@@ -75,12 +70,6 @@ module_param(nowayout, bool, 0);
 MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started."
                 " (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
 
-static unsigned int force_addr;
-module_param(force_addr, uint, 0);
-MODULE_PARM_DESC(force_addr, "Force the use of specified MMIO address."
-                " ONLY USE THIS PARAMETER IF YOU REALLY KNOW"
-                " WHAT YOU ARE DOING (default=none)");
-
 /*
  * Some TCO specific functions
  */
@@ -176,39 +165,6 @@ static void tco_timer_enable(void)
         }
 }
 
-static void tco_timer_disable(void)
-{
-        int val;
-
-        if (sp5100_tco_pci->revision >= 0x40) {
-                /* For SB800 or later */
-                /* Enable watchdog decode bit and Disable watchdog timer */
-                outb(SB800_PM_WATCHDOG_CONTROL, SB800_IO_PM_INDEX_REG);
-                val = inb(SB800_IO_PM_DATA_REG);
-                val |= SB800_PCI_WATCHDOG_DECODE_EN;
-                val |= SB800_PM_WATCHDOG_DISABLE;
-                outb(val, SB800_IO_PM_DATA_REG);
-        } else {
-                /* For SP5100 or SB7x0 */
-                /* Enable watchdog decode bit */
-                pci_read_config_dword(sp5100_tco_pci,
-                                      SP5100_PCI_WATCHDOG_MISC_REG,
-                                      &val);
-
-                val |= SP5100_PCI_WATCHDOG_DECODE_EN;
-
-                pci_write_config_dword(sp5100_tco_pci,
-                                       SP5100_PCI_WATCHDOG_MISC_REG,
-                                       val);
-
-                /* Disable Watchdog timer */
-                outb(SP5100_PM_WATCHDOG_CONTROL, SP5100_IO_PM_INDEX_REG);
-                val = inb(SP5100_IO_PM_DATA_REG);
-                val |= SP5100_PM_WATCHDOG_DISABLE;
-                outb(val, SP5100_IO_PM_DATA_REG);
-        }
-}
-
 /*
  *      /dev/watchdog handling
  */
@@ -361,7 +317,7 @@ static unsigned char sp5100_tco_setupdevice(void)
 {
         struct pci_dev *dev = NULL;
         const char *dev_name = NULL;
-        u32 val, tmp_val;
+        u32 val;
         u32 index_reg, data_reg, base_addr;
 
         /* Match the PCI device */
@@ -459,63 +415,8 @@ static unsigned char sp5100_tco_setupdevice(void)
         } else
                 pr_debug("SBResource_MMIO is disabled(0x%04x)\n", val);
 
-        /*
-         * Lastly re-programming the watchdog timer MMIO address,
-         * This method is a last resort...
-         *
-         * Before re-programming, to ensure that the watchdog timer
-         * is disabled, disable the watchdog timer.
-         */
-        tco_timer_disable();
-
-        if (force_addr) {
-                /*
-                 * Force the use of watchdog timer MMIO address, and aligned to
-                 * 8byte boundary.
-                 */
-                force_addr &= ~0x7;
-                val = force_addr;
-
-                pr_info("Force the use of 0x%04x as MMIO address\n", val);
-        } else {
-                /*
-                 * Get empty slot into the resource tree for watchdog timer.
-                 */
-                if (allocate_resource(&iomem_resource,
-                                      &wdt_res,
-                                      SP5100_WDT_MEM_MAP_SIZE,
-                                      0xf0000000,
-                                      0xfffffff8,
-                                      0x8,
-                                      NULL,
-                                      NULL)) {
-                        pr_err("MMIO allocation failed\n");
-                        goto unreg_region;
-                }
-
-                val = resbase_phys = wdt_res.start;
-                pr_debug("Got 0x%04x from resource tree\n", val);
-        }
-
-        /* Restore to the low three bits */
-        outb(base_addr+0, index_reg);
-        tmp_val = val | (inb(data_reg) & 0x7);
-
-        /* Re-programming the watchdog timer base address */
-        outb(base_addr+0, index_reg);
-        outb((tmp_val >>  0) & 0xff, data_reg);
-        outb(base_addr+1, index_reg);
-        outb((tmp_val >>  8) & 0xff, data_reg);
-        outb(base_addr+2, index_reg);
-        outb((tmp_val >> 16) & 0xff, data_reg);
-        outb(base_addr+3, index_reg);
-        outb((tmp_val >> 24) & 0xff, data_reg);
-
-        if (!request_mem_region_exclusive(val, SP5100_WDT_MEM_MAP_SIZE,
-                                                                   dev_name)) {
-                pr_err("MMIO address 0x%04x already in use\n", val);
-                goto unreg_resource;
-        }
+        pr_notice("failed to find MMIO address, giving up.\n");
+        goto  unreg_region;
 
 setup_wdt:
         tcobase_phys = val;
@@ -555,9 +456,6 @@ setup_wdt:
 
 unreg_mem_region:
         release_mem_region(tcobase_phys, SP5100_WDT_MEM_MAP_SIZE);
-unreg_resource:
-        if (resbase_phys)
-                release_resource(&wdt_res);
 unreg_region:
         release_region(pm_iobase, SP5100_PM_IOPORTS_SIZE);
 exit:
@@ -567,7 +465,6 @@ exit:
 static int sp5100_tco_init(struct platform_device *dev)
 {
         int ret;
-        char addr_str[16];
 
         /*
          * Check whether or not the hardware watchdog is there. If found, then
@@ -599,23 +496,14 @@ static int sp5100_tco_init(struct platform_device *dev)
         clear_bit(0, &timer_alive);
 
         /* Show module parameters */
-        if (force_addr == tcobase_phys)
-                /* The force_addr is vaild */
-                sprintf(addr_str, "0x%04x", force_addr);
-        else
-                strcpy(addr_str, "none");
-
-        pr_info("initialized (0x%p). heartbeat=%d sec (nowayout=%d, "
-                "force_addr=%s)\n",
-                tcobase, heartbeat, nowayout, addr_str);
+        pr_info("initialized (0x%p). heartbeat=%d sec (nowayout=%d)\n",
+                tcobase, heartbeat, nowayout);
 
         return 0;
 
 exit:
         iounmap(tcobase);
         release_mem_region(tcobase_phys, SP5100_WDT_MEM_MAP_SIZE);
-        if (resbase_phys)
-                release_resource(&wdt_res);
         release_region(pm_iobase, SP5100_PM_IOPORTS_SIZE);
         return ret;
 }
@@ -630,8 +518,6 @@ static void sp5100_tco_cleanup(void)
         misc_deregister(&sp5100_tco_miscdev);
         iounmap(tcobase);
         release_mem_region(tcobase_phys, SP5100_WDT_MEM_MAP_SIZE);
-        if (resbase_phys)
-                release_resource(&wdt_res);
         release_region(pm_iobase, SP5100_PM_IOPORTS_SIZE);
 }
 
diff --git a/drivers/watchdog/sp5100_tco.h b/drivers/watchdog/sp5100_tco.h
index 71594a0c14b7..2b28c00da0df 100644
--- a/drivers/watchdog/sp5100_tco.h
+++ b/drivers/watchdog/sp5100_tco.h
@@ -57,7 +57,7 @@
 #define SB800_PM_WATCHDOG_DISABLE       (1 << 2)
 #define SB800_PM_WATCHDOG_SECOND_RES    (3 << 0)
 #define SB800_ACPI_MMIO_DECODE_EN       (1 << 0)
-#define SB800_ACPI_MMIO_SEL             (1 << 2)
+#define SB800_ACPI_MMIO_SEL             (1 << 1)
 
 
 #define SB800_PM_WDT_MMIO_OFFSET        0xB00
diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig
index 5a32232cf7c1..67af155cf602 100644
--- a/drivers/xen/Kconfig
+++ b/drivers/xen/Kconfig
@@ -182,7 +182,7 @@ config XEN_PRIVCMD
 
 config XEN_STUB
         bool "Xen stub drivers"
-        depends on XEN && X86_64
+        depends on XEN && X86_64 && BROKEN
         default n
         help
           Allow kernel to install stub drivers, to reserve space for Xen drivers,
diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index d17aa41a9041..aa85881d17b2 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -403,11 +403,23 @@ static void unmask_evtchn(int port)
 
         if (unlikely((cpu != cpu_from_evtchn(port))))
                 do_hypercall = 1;
-        else
+        else {
+                /*
+                 * Need to clear the mask before checking pending to
+                 * avoid a race with an event becoming pending.
+                 *
+                 * EVTCHNOP_unmask will only trigger an upcall if the
+                 * mask bit was set, so if a hypercall is needed
+                 * remask the event.
+                 */
+                sync_clear_bit(port, BM(&s->evtchn_mask[0]));
                 evtchn_pending = sync_test_bit(port, BM(&s->evtchn_pending[0]));
 
-        if (unlikely(evtchn_pending && xen_hvm_domain()))
-                do_hypercall = 1;
+                if (unlikely(evtchn_pending && xen_hvm_domain())) {
+                        sync_set_bit(port, BM(&s->evtchn_mask[0]));
+                        do_hypercall = 1;
+                }
+        }
 
         /* Slow path (hypercall) if this is a non-local port or if this is
          * an hvm domain and an event is pending (hvm domains don't have
@@ -418,8 +430,6 @@ static void unmask_evtchn(int port)
         } else {
                 struct vcpu_info *vcpu_info = __this_cpu_read(xen_vcpu);
 
-                sync_clear_bit(port, BM(&s->evtchn_mask[0]));
-
                 /*
                  * The following is basically the equivalent of
                  * 'hw_resend_irq'. Just like a real IO-APIC we 'lose
diff --git a/drivers/xen/fallback.c b/drivers/xen/fallback.c
index 0ef7c4d40f86..b04fb64c5a91 100644
--- a/drivers/xen/fallback.c
+++ b/drivers/xen/fallback.c
@@ -44,7 +44,7 @@ int xen_event_channel_op_compat(int cmd, void *arg)
 }
 EXPORT_SYMBOL_GPL(xen_event_channel_op_compat);
 
-int HYPERVISOR_physdev_op_compat(int cmd, void *arg)
+int xen_physdev_op_compat(int cmd, void *arg)
 {
         struct physdev_op op;
         int rc;
@@ -78,3 +78,4 @@ int HYPERVISOR_physdev_op_compat(int cmd, void *arg)
 
         return rc;
 }
+EXPORT_SYMBOL_GPL(xen_physdev_op_compat);
diff --git a/drivers/xen/xen-acpi-processor.c b/drivers/xen/xen-acpi-processor.c
index f3278a6603ca..90e34ac7e522 100644
--- a/drivers/xen/xen-acpi-processor.c
+++ b/drivers/xen/xen-acpi-processor.c
@@ -505,6 +505,9 @@ static int __init xen_acpi_processor_init(void)
 
                 pr = per_cpu(processors, i);
                 perf = per_cpu_ptr(acpi_perf_data, i);
+                if (!pr)
+                        continue;
+
                 pr->performance = perf;
                 rc = acpi_processor_get_performance_info(pr);
                 if (rc)
diff --git a/drivers/xen/xen-pciback/pci_stub.c b/drivers/xen/xen-pciback/pci_stub.c
index 9204126f1560..a2278ba7fb27 100644
--- a/drivers/xen/xen-pciback/pci_stub.c
+++ b/drivers/xen/xen-pciback/pci_stub.c
@@ -17,6 +17,7 @@
 #include <xen/events.h>
 #include <asm/xen/pci.h>
 #include <asm/xen/hypervisor.h>
+#include <xen/interface/physdev.h>
 #include "pciback.h"
 #include "conf_space.h"
 #include "conf_space_quirks.h"
@@ -85,37 +86,52 @@ static struct pcistub_device *pcistub_device_alloc(struct pci_dev *dev)
 static void pcistub_device_release(struct kref *kref)
 {
         struct pcistub_device *psdev;
+        struct pci_dev *dev;
         struct xen_pcibk_dev_data *dev_data;
 
         psdev = container_of(kref, struct pcistub_device, kref);
-        dev_data = pci_get_drvdata(psdev->dev);
+        dev = psdev->dev;
+        dev_data = pci_get_drvdata(dev);
 
-        dev_dbg(&psdev->dev->dev, "pcistub_device_release\n");
+        dev_dbg(&dev->dev, "pcistub_device_release\n");
 
-        xen_unregister_device_domain_owner(psdev->dev);
+        xen_unregister_device_domain_owner(dev);
 
         /* Call the reset function which does not take lock as this
          * is called from "unbind" which takes a device_lock mutex.
          */
-        __pci_reset_function_locked(psdev->dev);
-        if (pci_load_and_free_saved_state(psdev->dev,
-                                          &dev_data->pci_saved_state)) {
-                dev_dbg(&psdev->dev->dev, "Could not reload PCI state\n");
-        } else
-                pci_restore_state(psdev->dev);
+        __pci_reset_function_locked(dev);
+        if (pci_load_and_free_saved_state(dev, &dev_data->pci_saved_state))
+                dev_dbg(&dev->dev, "Could not reload PCI state\n");
+        else
+                pci_restore_state(dev);
+
+        if (pci_find_capability(dev, PCI_CAP_ID_MSIX)) {
+                struct physdev_pci_device ppdev = {
+                        .seg = pci_domain_nr(dev->bus),
+                        .bus = dev->bus->number,
+                        .devfn = dev->devfn
+                };
+                int err = HYPERVISOR_physdev_op(PHYSDEVOP_release_msix,
+                                                &ppdev);
+
+                if (err)
+                        dev_warn(&dev->dev, "MSI-X release failed (%d)\n",
+                                 err);
+        }
 
         /* Disable the device */
-        xen_pcibk_reset_device(psdev->dev);
+        xen_pcibk_reset_device(dev);
 
         kfree(dev_data);
-        pci_set_drvdata(psdev->dev, NULL);
+        pci_set_drvdata(dev, NULL);
 
         /* Clean-up the device */
-        xen_pcibk_config_free_dyn_fields(psdev->dev);
-        xen_pcibk_config_free_dev(psdev->dev);
+        xen_pcibk_config_free_dyn_fields(dev);
+        xen_pcibk_config_free_dev(dev);
 
-        psdev->dev->dev_flags &= ~PCI_DEV_FLAGS_ASSIGNED;
-        pci_dev_put(psdev->dev);
+        dev->dev_flags &= ~PCI_DEV_FLAGS_ASSIGNED;
+        pci_dev_put(dev);
 
         kfree(psdev);
 }
@@ -355,6 +371,19 @@ static int pcistub_init_device(struct pci_dev *dev)
         if (err)
                 goto config_release;
 
+        if (pci_find_capability(dev, PCI_CAP_ID_MSIX)) {
+                struct physdev_pci_device ppdev = {
+                        .seg = pci_domain_nr(dev->bus),
+                        .bus = dev->bus->number,
+                        .devfn = dev->devfn
+                };
+
+                err = HYPERVISOR_physdev_op(PHYSDEVOP_prepare_msix, &ppdev);
+                if (err)
+                        dev_err(&dev->dev, "MSI-X preparation failed (%d)\n",
+                                err);
+        }
+
         /* We need the device active to save the state. */
         dev_dbg(&dev->dev, "save state of device\n");
         pci_save_state(dev);
diff --git a/firmware/Makefile b/firmware/Makefile
index cbb09ce9730a..5d8ee1319b5c 100644
--- a/firmware/Makefile
+++ b/firmware/Makefile
@@ -82,7 +82,7 @@ fw-shipped-$(CONFIG_SCSI_ADVANSYS) += advansys/mcode.bin advansys/38C1600.bin \
 fw-shipped-$(CONFIG_SCSI_QLOGIC_1280) += qlogic/1040.bin qlogic/1280.bin \
                                          qlogic/12160.bin
 fw-shipped-$(CONFIG_SCSI_QLOGICPTI) += qlogic/isp1000.bin
-fw-shipped-$(CONFIG_INFINIBAND_QIB) += qlogic/sd7220.fw
+fw-shipped-$(CONFIG_INFINIBAND_QIB) += intel/sd7220.fw
 fw-shipped-$(CONFIG_SND_KORG1212) += korg/k1212.dsp
 fw-shipped-$(CONFIG_SND_MAESTRO3) += ess/maestro3_assp_kernel.fw \
                                      ess/maestro3_assp_minisrc.fw
diff --git a/firmware/qlogic/sd7220.fw.ihex b/firmware/intel/sd7220.fw.ihex
index a33636319112..a33636319112 100644
--- a/firmware/qlogic/sd7220.fw.ihex
+++ b/firmware/intel/sd7220.fw.ihex
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index ecd25a1b4e51..ca9d8f1a3bb6 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -651,6 +651,8 @@ tree_mod_log_insert_root(struct btrfs_fs_info *fs_info,
         if (tree_mod_dont_log(fs_info, NULL))
                 return 0;
 
+        __tree_mod_log_free_eb(fs_info, old_root);
+
         ret = tree_mod_alloc(fs_info, flags, &tm);
         if (ret < 0)
                 goto out;
@@ -736,7 +738,7 @@ tree_mod_log_search(struct btrfs_fs_info *fs_info, u64 start, u64 min_seq)
 static noinline void
 tree_mod_log_eb_copy(struct btrfs_fs_info *fs_info, struct extent_buffer *dst,
                      struct extent_buffer *src, unsigned long dst_offset,
-                     unsigned long src_offset, int nr_items)
+                     unsigned long src_offset, int nr_items, int log_removal)
 {
         int ret;
         int i;
@@ -750,10 +752,12 @@ tree_mod_log_eb_copy(struct btrfs_fs_info *fs_info, struct extent_buffer *dst,
         }
 
         for (i = 0; i < nr_items; i++) {
-                ret = tree_mod_log_insert_key_locked(fs_info, src,
-                                                     i + src_offset,
-                                                     MOD_LOG_KEY_REMOVE);
-                BUG_ON(ret < 0);
+                if (log_removal) {
+                        ret = tree_mod_log_insert_key_locked(fs_info, src,
+                                                        i + src_offset,
+                                                        MOD_LOG_KEY_REMOVE);
+                        BUG_ON(ret < 0);
+                }
                 ret = tree_mod_log_insert_key_locked(fs_info, dst,
                                                      i + dst_offset,
                                                      MOD_LOG_KEY_ADD);
@@ -927,7 +931,6 @@ static noinline int update_ref_for_cow(struct btrfs_trans_handle *trans,
                         ret = btrfs_dec_ref(trans, root, buf, 1, 1);
                         BUG_ON(ret); /* -ENOMEM */
                 }
-                tree_mod_log_free_eb(root->fs_info, buf);
                 clean_tree_block(trans, root, buf);
                 *last_ref = 1;
         }
@@ -1046,6 +1049,7 @@ static noinline int __btrfs_cow_block(struct btrfs_trans_handle *trans,
                 btrfs_set_node_ptr_generation(parent, parent_slot,
                                               trans->transid);
                 btrfs_mark_buffer_dirty(parent);
+                tree_mod_log_free_eb(root->fs_info, buf);
                 btrfs_free_tree_block(trans, root, buf, parent_start,
                                       last_ref);
         }
@@ -1750,7 +1754,6 @@ static noinline int balance_level(struct btrfs_trans_handle *trans,
                         goto enospc;
                 }
 
-                tree_mod_log_free_eb(root->fs_info, root->node);
                 tree_mod_log_set_root_pointer(root, child);
                 rcu_assign_pointer(root->node, child);
 
@@ -2995,7 +2998,7 @@ static int push_node_left(struct btrfs_trans_handle *trans,
                 push_items = min(src_nritems - 8, push_items);
 
         tree_mod_log_eb_copy(root->fs_info, dst, src, dst_nritems, 0,
-                             push_items);
+                             push_items, 1);
         copy_extent_buffer(dst, src,
                            btrfs_node_key_ptr_offset(dst_nritems),
                            btrfs_node_key_ptr_offset(0),
@@ -3066,7 +3069,7 @@ static int balance_node_right(struct btrfs_trans_handle *trans,
                                       sizeof(struct btrfs_key_ptr));
 
         tree_mod_log_eb_copy(root->fs_info, dst, src, 0,
-                             src_nritems - push_items, push_items);
+                             src_nritems - push_items, push_items, 1);
         copy_extent_buffer(dst, src,
                            btrfs_node_key_ptr_offset(0),
                            btrfs_node_key_ptr_offset(src_nritems - push_items),
@@ -3218,12 +3221,18 @@ static noinline int split_node(struct btrfs_trans_handle *trans,
         int mid;
         int ret;
         u32 c_nritems;
+        int tree_mod_log_removal = 1;
 
         c = path->nodes[level];
         WARN_ON(btrfs_header_generation(c) != trans->transid);
         if (c == root->node) {
                 /* trying to split the root, lets make a new one */
                 ret = insert_new_root(trans, root, path, level + 1);
+                /*
+                 * removal of root nodes has been logged by
+                 * tree_mod_log_set_root_pointer due to locking
+                 */
+                tree_mod_log_removal = 0;
                 if (ret)
                         return ret;
         } else {
@@ -3261,7 +3270,8 @@ static noinline int split_node(struct btrfs_trans_handle *trans,
                             (unsigned long)btrfs_header_chunk_tree_uuid(split),
                             BTRFS_UUID_SIZE);
 
-        tree_mod_log_eb_copy(root->fs_info, split, c, 0, mid, c_nritems - mid);
+        tree_mod_log_eb_copy(root->fs_info, split, c, 0, mid, c_nritems - mid,
+                             tree_mod_log_removal);
         copy_extent_buffer(split, c,
                            btrfs_node_key_ptr_offset(0),
                            btrfs_node_key_ptr_offset(mid),
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 7d84651e850b..6d19a0a554aa 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -1291,6 +1291,7 @@ struct btrfs_root *btrfs_create_tree(struct btrfs_trans_handle *trans,
                                       0, objectid, NULL, 0, 0, 0);
         if (IS_ERR(leaf)) {
                 ret = PTR_ERR(leaf);
+                leaf = NULL;
                 goto fail;
         }
 
@@ -1334,11 +1335,16 @@ struct btrfs_root *btrfs_create_tree(struct btrfs_trans_handle *trans,
 
         btrfs_tree_unlock(leaf);
 
+        return root;
+
 fail:
-        if (ret)
-                return ERR_PTR(ret);
+        if (leaf) {
+                btrfs_tree_unlock(leaf);
+                free_extent_buffer(leaf);
+        }
+        kfree(root);
 
-        return root;
+        return ERR_PTR(ret);
 }
 
 static struct btrfs_root *alloc_log_tree(struct btrfs_trans_handle *trans,
@@ -3253,7 +3259,7 @@ void btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root)
         if (btrfs_root_refs(&root->root_item) == 0)
                 synchronize_srcu(&fs_info->subvol_srcu);
 
-        if (fs_info->fs_state & BTRFS_SUPER_FLAG_ERROR) {
+        if (test_bit(BTRFS_FS_STATE_ERROR, &fs_info->fs_state)) {
                 btrfs_free_log(NULL, root);
                 btrfs_free_log_root_tree(NULL, fs_info);
         }
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 9ac2eca681eb..3d551231caba 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -257,7 +257,8 @@ static int exclude_super_stripes(struct btrfs_root *root,
                 cache->bytes_super += stripe_len;
                 ret = add_excluded_extent(root, cache->key.objectid,
                                           stripe_len);
-                BUG_ON(ret); /* -ENOMEM */
+                if (ret)
+                        return ret;
         }
 
         for (i = 0; i < BTRFS_SUPER_MIRROR_MAX; i++) {
@@ -265,13 +266,17 @@ static int exclude_super_stripes(struct btrfs_root *root,
                 ret = btrfs_rmap_block(&root->fs_info->mapping_tree,
                                        cache->key.objectid, bytenr,
                                        0, &logical, &nr, &stripe_len);
-                BUG_ON(ret); /* -ENOMEM */
+                if (ret)
+                        return ret;
 
                 while (nr--) {
                         cache->bytes_super += stripe_len;
                         ret = add_excluded_extent(root, logical[nr],
                                                   stripe_len);
-                        BUG_ON(ret); /* -ENOMEM */
+                        if (ret) {
+                                kfree(logical);
+                                return ret;
+                        }
                 }
 
                 kfree(logical);
@@ -4438,7 +4443,7 @@ static void update_global_block_rsv(struct btrfs_fs_info *fs_info)
         spin_lock(&sinfo->lock);
         spin_lock(&block_rsv->lock);
 
-        block_rsv->size = num_bytes;
+        block_rsv->size = min_t(u64, num_bytes, 512 * 1024 * 1024);
 
         num_bytes = sinfo->bytes_used + sinfo->bytes_pinned +
                     sinfo->bytes_reserved + sinfo->bytes_readonly +
@@ -4793,14 +4798,49 @@ out_fail:
          * If the inodes csum_bytes is the same as the original
          * csum_bytes then we know we haven't raced with any free()ers
          * so we can just reduce our inodes csum bytes and carry on.
-         * Otherwise we have to do the normal free thing to account for
-         * the case that the free side didn't free up its reserve
-         * because of this outstanding reservation.
          */
-        if (BTRFS_I(inode)->csum_bytes == csum_bytes)
+        if (BTRFS_I(inode)->csum_bytes == csum_bytes) {
                 calc_csum_metadata_size(inode, num_bytes, 0);
-        else
-                to_free = calc_csum_metadata_size(inode, num_bytes, 0);
+        } else {
+                u64 orig_csum_bytes = BTRFS_I(inode)->csum_bytes;
+                u64 bytes;
+
+                /*
+                 * This is tricky, but first we need to figure out how much we
+                 * free'd from any free-ers that occured during this
+                 * reservation, so we reset ->csum_bytes to the csum_bytes
+                 * before we dropped our lock, and then call the free for the
+                 * number of bytes that were freed while we were trying our
+                 * reservation.
+                 */
+                bytes = csum_bytes - BTRFS_I(inode)->csum_bytes;
+                BTRFS_I(inode)->csum_bytes = csum_bytes;
+                to_free = calc_csum_metadata_size(inode, bytes, 0);
+
+
+                /*
+                 * Now we need to see how much we would have freed had we not
+                 * been making this reservation and our ->csum_bytes were not
+                 * artificially inflated.
+                 */
+                BTRFS_I(inode)->csum_bytes = csum_bytes - num_bytes;
+                bytes = csum_bytes - orig_csum_bytes;
+                bytes = calc_csum_metadata_size(inode, bytes, 0);
+
+                /*
+                 * Now reset ->csum_bytes to what it should be.  If bytes is
+                 * more than to_free then we would have free'd more space had we
+                 * not had an artificially high ->csum_bytes, so we need to free
+                 * the remainder.  If bytes is the same or less then we don't
+                 * need to do anything, the other free-ers did the correct
+                 * thing.
+                 */
+                BTRFS_I(inode)->csum_bytes = orig_csum_bytes - num_bytes;
+                if (bytes > to_free)
+                        to_free = bytes - to_free;
+                else
+                        to_free = 0;
+        }
         spin_unlock(&BTRFS_I(inode)->lock);
         if (dropped)
                 to_free += btrfs_calc_trans_metadata_size(root, dropped);
@@ -7947,7 +7987,17 @@ int btrfs_read_block_groups(struct btrfs_root *root)
                  * info has super bytes accounted for, otherwise we'll think
                  * we have more space than we actually do.
                  */
-                exclude_super_stripes(root, cache);
+                ret = exclude_super_stripes(root, cache);
+                if (ret) {
+                        /*
+                         * We may have excluded something, so call this just in
+                         * case.
+                         */
+                        free_excluded_extents(root, cache);
+                        kfree(cache->free_space_ctl);
+                        kfree(cache);
+                        goto error;
+                }
 
                 /*
                  * check for two cases, either we are full, and therefore
@@ -8089,7 +8139,17 @@ int btrfs_make_block_group(struct btrfs_trans_handle *trans,
 
         cache->last_byte_to_unpin = (u64)-1;
         cache->cached = BTRFS_CACHE_FINISHED;
-        exclude_super_stripes(root, cache);
+        ret = exclude_super_stripes(root, cache);
+        if (ret) {
+                /*
+                 * We may have excluded something, so call this just in
+                 * case.
+                 */
+                free_excluded_extents(root, cache);
+                kfree(cache->free_space_ctl);
+                kfree(cache);
+                return ret;
+        }
 
         add_new_free_space(cache, root->fs_info, chunk_offset,
                            chunk_offset + size);
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index bed072aa461f..73f2bfe3ac93 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -1257,6 +1257,39 @@ int unlock_extent(struct extent_io_tree *tree, u64 start, u64 end)
                                 GFP_NOFS);
 }
 
+int extent_range_clear_dirty_for_io(struct inode *inode, u64 start, u64 end)
+{
+        unsigned long index = start >> PAGE_CACHE_SHIFT;
+        unsigned long end_index = end >> PAGE_CACHE_SHIFT;
+        struct page *page;
+
+        while (index <= end_index) {
+                page = find_get_page(inode->i_mapping, index);
+                BUG_ON(!page); /* Pages should be in the extent_io_tree */
+                clear_page_dirty_for_io(page);
+                page_cache_release(page);
+                index++;
+        }
+        return 0;
+}
+
+int extent_range_redirty_for_io(struct inode *inode, u64 start, u64 end)
+{
+        unsigned long index = start >> PAGE_CACHE_SHIFT;
+        unsigned long end_index = end >> PAGE_CACHE_SHIFT;
+        struct page *page;
+
+        while (index <= end_index) {
+                page = find_get_page(inode->i_mapping, index);
+                BUG_ON(!page); /* Pages should be in the extent_io_tree */
+                account_page_redirty(page);
+                __set_page_dirty_nobuffers(page);
+                page_cache_release(page);
+                index++;
+        }
+        return 0;
+}
+
 /*
  * helper function to set both pages and extents in the tree writeback
  */
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index 6068a1985560..258c92156857 100644
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h
@@ -325,6 +325,8 @@ int map_private_extent_buffer(struct extent_buffer *eb, unsigned long offset,
                       unsigned long *map_len);
 int extent_range_uptodate(struct extent_io_tree *tree,
                           u64 start, u64 end);
+int extent_range_clear_dirty_for_io(struct inode *inode, u64 start, u64 end);
+int extent_range_redirty_for_io(struct inode *inode, u64 start, u64 end);
 int extent_clear_unlock_delalloc(struct inode *inode,
                                 struct extent_io_tree *tree,
                                 u64 start, u64 end, struct page *locked_page,
diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c
index ec160202be3e..c4628a201cb3 100644
--- a/fs/btrfs/file-item.c
+++ b/fs/btrfs/file-item.c
@@ -118,9 +118,11 @@ struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans,
                 csums_in_item = btrfs_item_size_nr(leaf, path->slots[0]);
                 csums_in_item /= csum_size;
 
-                if (csum_offset >= csums_in_item) {
+                if (csum_offset == csums_in_item) {
                         ret = -EFBIG;
                         goto fail;
+                } else if (csum_offset > csums_in_item) {
+                        goto fail;
                 }
         }
         item = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_csum_item);
@@ -728,7 +730,6 @@ int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans,
                 return -ENOMEM;
 
         sector_sum = sums->sums;
-        trans->adding_csums = 1;
 again:
         next_offset = (u64)-1;
         found_next = 0;
@@ -899,7 +900,6 @@ next_sector:
                 goto again;
         }
 out:
-        trans->adding_csums = 0;
         btrfs_free_path(path);
         return ret;
 
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 5b4ea5f55b8f..ade03e6f7bd2 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -2142,6 +2142,7 @@ static long btrfs_fallocate(struct file *file, int mode,
 {
         struct inode *inode = file_inode(file);
         struct extent_state *cached_state = NULL;
+        struct btrfs_root *root = BTRFS_I(inode)->root;
         u64 cur_offset;
         u64 last_byte;
         u64 alloc_start;
@@ -2169,6 +2170,11 @@ static long btrfs_fallocate(struct file *file, int mode,
         ret = btrfs_check_data_free_space(inode, alloc_end - alloc_start);
         if (ret)
                 return ret;
+        if (root->fs_info->quota_enabled) {
+                ret = btrfs_qgroup_reserve(root, alloc_end - alloc_start);
+                if (ret)
+                        goto out_reserve_fail;
+        }
 
         /*
          * wait for ordered IO before we have any locks.  We'll loop again
@@ -2272,6 +2278,9 @@ static long btrfs_fallocate(struct file *file, int mode,
                              &cached_state, GFP_NOFS);
 out:
         mutex_unlock(&inode->i_mutex);
+        if (root->fs_info->quota_enabled)
+                btrfs_qgroup_free(root, alloc_end - alloc_start);
+out_reserve_fail:
         /* Let go of our reservation. */
         btrfs_free_reserved_data_space(inode, alloc_end - alloc_start);
         return ret;
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index ca1b767d51f7..09c58a35b429 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -353,6 +353,7 @@ static noinline int compress_file_range(struct inode *inode,
         int i;
         int will_compress;
         int compress_type = root->fs_info->compress_type;
+        int redirty = 0;
 
         /* if this is a small write inside eof, kick off a defrag */
         if ((end - start + 1) < 16 * 1024 &&
@@ -415,6 +416,17 @@ again:
                 if (BTRFS_I(inode)->force_compress)
                         compress_type = BTRFS_I(inode)->force_compress;
 
+                /*
+                 * we need to call clear_page_dirty_for_io on each
+                 * page in the range.  Otherwise applications with the file
+                 * mmap'd can wander in and change the page contents while
+                 * we are compressing them.
+                 *
+                 * If the compression fails for any reason, we set the pages
+                 * dirty again later on.
+                 */
+                extent_range_clear_dirty_for_io(inode, start, end);
+                redirty = 1;
                 ret = btrfs_compress_pages(compress_type,
                                            inode->i_mapping, start,
                                            total_compressed, pages,
@@ -554,6 +566,8 @@ cleanup_and_bail_uncompressed:
                         __set_page_dirty_nobuffers(locked_page);
                         /* unlocked later on in the async handlers */
                 }
+                if (redirty)
+                        extent_range_redirty_for_io(inode, start, end);
                 add_async_extent(async_cow, start, end - start + 1,
                                  0, NULL, 0, BTRFS_COMPRESS_NONE);
                 *num_added += 1;
@@ -1743,8 +1757,10 @@ static noinline int add_pending_csums(struct btrfs_trans_handle *trans,
         struct btrfs_ordered_sum *sum;
 
         list_for_each_entry(sum, list, list) {
+                trans->adding_csums = 1;
                 btrfs_csum_file_blocks(trans,
                        BTRFS_I(inode)->root->fs_info->csum_root, sum);
+                trans->adding_csums = 0;
         }
         return 0;
 }
@@ -3679,11 +3695,9 @@ static struct btrfs_trans_handle *__unlink_start_trans(struct inode *dir,
          * 1 for the dir item
          * 1 for the dir index
          * 1 for the inode ref
-         * 1 for the inode ref in the tree log
-         * 2 for the dir entries in the log
          * 1 for the inode
          */
-        trans = btrfs_start_transaction(root, 8);
+        trans = btrfs_start_transaction(root, 5);
         if (!IS_ERR(trans) || PTR_ERR(trans) != -ENOSPC)
                 return trans;
 
@@ -8127,7 +8141,7 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry,
          * inodes.  So 5 * 2 is 10, plus 1 for the new link, so 11 total items
          * should cover the worst case number of items we'll modify.
          */
-        trans = btrfs_start_transaction(root, 20);
+        trans = btrfs_start_transaction(root, 11);
         if (IS_ERR(trans)) {
                 ret = PTR_ERR(trans);
                 goto out_notrans;
diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c
index dc08d77b717e..005c45db699e 100644
--- a/fs/btrfs/ordered-data.c
+++ b/fs/btrfs/ordered-data.c
@@ -557,6 +557,7 @@ void btrfs_wait_ordered_extents(struct btrfs_root *root, int delay_iput)
         INIT_LIST_HEAD(&splice);
         INIT_LIST_HEAD(&works);
 
+        mutex_lock(&root->fs_info->ordered_operations_mutex);
         spin_lock(&root->fs_info->ordered_extent_lock);
         list_splice_init(&root->fs_info->ordered_extents, &splice);
         while (!list_empty(&splice)) {
@@ -600,6 +601,7 @@ void btrfs_wait_ordered_extents(struct btrfs_root *root, int delay_iput)
 
                 cond_resched();
         }
+        mutex_unlock(&root->fs_info->ordered_operations_mutex);
 }
 
 /*
diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index 5471e47d6559..b44124dd2370 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -1153,7 +1153,7 @@ int btrfs_qgroup_account_ref(struct btrfs_trans_handle *trans,
         ret = btrfs_find_all_roots(trans, fs_info, node->bytenr,
                                    sgn > 0 ? node->seq - 1 : node->seq, &roots);
         if (ret < 0)
-                goto out;
+                return ret;
 
         spin_lock(&fs_info->qgroup_lock);
         quota_root = fs_info->quota_root;
@@ -1275,7 +1275,6 @@ int btrfs_qgroup_account_ref(struct btrfs_trans_handle *trans,
         ret = 0;
 unlock:
         spin_unlock(&fs_info->qgroup_lock);
-out:
         ulist_free(roots);
         ulist_free(tmp);
 
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index 53c3501fa4ca..85e072b956d5 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -542,7 +542,6 @@ static void scrub_print_warning(const char *errstr, struct scrub_block *sblock)
         eb = path->nodes[0];
         ei = btrfs_item_ptr(eb, path->slots[0], struct btrfs_extent_item);
         item_size = btrfs_item_size_nr(eb, path->slots[0]);
-        btrfs_release_path(path);
 
         if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
                 do {
@@ -558,7 +557,9 @@ static void scrub_print_warning(const char *errstr, struct scrub_block *sblock)
                                 ret < 0 ? -1 : ref_level,
                                 ret < 0 ? -1 : ref_root);
                 } while (ret != 1);
+                btrfs_release_path(path);
         } else {
+                btrfs_release_path(path);
                 swarn.path = path;
                 swarn.dev = dev;
                 iterate_extent_inodes(fs_info, found_key.objectid,
diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index f7a8b861058b..c85e7c6b4598 100644
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -3945,12 +3945,10 @@ static int is_extent_unchanged(struct send_ctx *sctx,
                     found_key.type != key.type) {
                         key.offset += right_len;
                         break;
-                } else {
-                        if (found_key.offset != key.offset + right_len) {
-                                /* Should really not happen */
-                                ret = -EIO;
-                                goto out;
-                        }
+                }
+                if (found_key.offset != key.offset + right_len) {
+                        ret = 0;
+                        goto out;
                 }
                 key = found_key;
         }
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index d90e0485e01b..678977226570 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -4935,7 +4935,18 @@ int btrfs_rmap_block(struct btrfs_mapping_tree *map_tree,
         em = lookup_extent_mapping(em_tree, chunk_start, 1);
         read_unlock(&em_tree->lock);
 
-        BUG_ON(!em || em->start != chunk_start);
+        if (!em) {
+                printk(KERN_ERR "btrfs: couldn't find em for chunk %Lu\n",
+                       chunk_start);
+                return -EIO;
+        }
+
+        if (em->start != chunk_start) {
+                printk(KERN_ERR "btrfs: bad chunk start, em=%Lu, wanted=%Lu\n",
+                       em->start, chunk_start);
+                free_extent_map(em);
+                return -EIO;
+        }
         map = (struct map_lookup *)em->bdev;
 
         length = em->len;
diff --git a/fs/cifs/asn1.c b/fs/cifs/asn1.c
index cfd1ce34e0bc..1d36db114772 100644
--- a/fs/cifs/asn1.c
+++ b/fs/cifs/asn1.c
@@ -614,53 +614,10 @@ decode_negTokenInit(unsigned char *security_blob, int length,
                 }
         }
 
-        /* mechlistMIC */
-        if (asn1_header_decode(&ctx, &end, &cls, &con, &tag) == 0) {
-                /* Check if we have reached the end of the blob, but with
-                   no mechListMic (e.g. NTLMSSP instead of KRB5) */
-                if (ctx.error == ASN1_ERR_DEC_EMPTY)
-                        goto decode_negtoken_exit;
-                cFYI(1, "Error decoding last part negTokenInit exit3");
-                return 0;
-        } else if ((cls != ASN1_CTX) || (con != ASN1_CON)) {
-                /* tag = 3 indicating mechListMIC */
-                cFYI(1, "Exit 4 cls = %d con = %d tag = %d end = %p (%d)",
-                        cls, con, tag, end, *end);
-                return 0;
-        }
-
-        /* sequence */
-        if (asn1_header_decode(&ctx, &end, &cls, &con, &tag) == 0) {
-                cFYI(1, "Error decoding last part negTokenInit exit5");
-                return 0;
-        } else if ((cls != ASN1_UNI) || (con != ASN1_CON)
-                   || (tag != ASN1_SEQ)) {
-                cFYI(1, "cls = %d con = %d tag = %d end = %p (%d)",
-                        cls, con, tag, end, *end);
-        }
-
-        /* sequence of */
-        if (asn1_header_decode(&ctx, &end, &cls, &con, &tag) == 0) {
-                cFYI(1, "Error decoding last part negTokenInit exit 7");
-                return 0;
-        } else if ((cls != ASN1_CTX) || (con != ASN1_CON)) {
-                cFYI(1, "Exit 8 cls = %d con = %d tag = %d end = %p (%d)",
-                        cls, con, tag, end, *end);
-                return 0;
-        }
-
-        /* general string */
-        if (asn1_header_decode(&ctx, &end, &cls, &con, &tag) == 0) {
-                cFYI(1, "Error decoding last part negTokenInit exit9");
-                return 0;
-        } else if ((cls != ASN1_UNI) || (con != ASN1_PRI)
-                   || (tag != ASN1_GENSTR)) {
-                cFYI(1, "Exit10 cls = %d con = %d tag = %d end = %p (%d)",
-                        cls, con, tag, end, *end);
-                return 0;
-        }
-        cFYI(1, "Need to call asn1_octets_decode() function for %s",
-                ctx.pointer);   /* is this UTF-8 or ASCII? */
-decode_negtoken_exit:
+        /*
+         * We currently ignore anything at the end of the SPNEGO blob after
+         * the mechTypes have been parsed, since none of that info is
+         * used at the moment.
+         */
         return 1;
 }
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 3cf8a15af916..345fc89c4286 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -91,6 +91,30 @@ struct workqueue_struct	*cifsiod_wq;
 __u8 cifs_client_guid[SMB2_CLIENT_GUID_SIZE];
 #endif
 
+/*
+ * Bumps refcount for cifs super block.
+ * Note that it should be only called if a referece to VFS super block is
+ * already held, e.g. in open-type syscalls context. Otherwise it can race with
+ * atomic_dec_and_test in deactivate_locked_super.
+ */
+void
+cifs_sb_active(struct super_block *sb)
+{
+        struct cifs_sb_info *server = CIFS_SB(sb);
+
+        if (atomic_inc_return(&server->active) == 1)
+                atomic_inc(&sb->s_active);
+}
+
+void
+cifs_sb_deactive(struct super_block *sb)
+{
+        struct cifs_sb_info *server = CIFS_SB(sb);
+
+        if (atomic_dec_and_test(&server->active))
+                deactivate_super(sb);
+}
+
 static int
 cifs_read_super(struct super_block *sb)
 {
diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index 7163419cecd9..0e32c3446ce9 100644
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -41,6 +41,10 @@ extern struct file_system_type cifs_fs_type;
 extern const struct address_space_operations cifs_addr_ops;
 extern const struct address_space_operations cifs_addr_ops_smallbuf;
 
+/* Functions related to super block operations */
+extern void cifs_sb_active(struct super_block *sb);
+extern void cifs_sb_deactive(struct super_block *sb);
+
 /* Functions related to inodes */
 extern const struct inode_operations cifs_dir_inode_ops;
 extern struct inode *cifs_root_iget(struct super_block *);
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 8c0d85577314..7a0dd99e4507 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -300,6 +300,8 @@ cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
         INIT_WORK(&cfile->oplock_break, cifs_oplock_break);
         mutex_init(&cfile->fh_mutex);
 
+        cifs_sb_active(inode->i_sb);
+
         /*
          * If the server returned a read oplock and we have mandatory brlocks,
          * set oplock level to None.
@@ -349,7 +351,8 @@ void cifsFileInfo_put(struct cifsFileInfo *cifs_file)
         struct cifs_tcon *tcon = tlink_tcon(cifs_file->tlink);
         struct TCP_Server_Info *server = tcon->ses->server;
         struct cifsInodeInfo *cifsi = CIFS_I(inode);
-        struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+        struct super_block *sb = inode->i_sb;
+        struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
         struct cifsLockInfo *li, *tmp;
         struct cifs_fid fid;
         struct cifs_pending_open open;
@@ -414,6 +417,7 @@ void cifsFileInfo_put(struct cifsFileInfo *cifs_file)
 
         cifs_put_tlink(cifs_file->tlink);
         dput(cifs_file->dentry);
+        cifs_sb_deactive(sb);
         kfree(cifs_file);
 }
 
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 0079696305c9..20887bf63121 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -1043,7 +1043,7 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry,
                                    cifs_sb->mnt_cifs_flags &
                                             CIFS_MOUNT_MAP_SPECIAL_CHR);
         if (rc != 0) {
-                rc = -ETXTBSY;
+                rc = -EBUSY;
                 goto undo_setattr;
         }
 
@@ -1062,7 +1062,7 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry,
                 if (rc == -ENOENT)
                         rc = 0;
                 else if (rc != 0) {
-                        rc = -ETXTBSY;
+                        rc = -EBUSY;
                         goto undo_rename;
                 }
                 cifsInode->delete_pending = true;
@@ -1169,15 +1169,13 @@ psx_del_no_retry:
                         cifs_drop_nlink(inode);
         } else if (rc == -ENOENT) {
                 d_drop(dentry);
-        } else if (rc == -ETXTBSY) {
+        } else if (rc == -EBUSY) {
                 if (server->ops->rename_pending_delete) {
                         rc = server->ops->rename_pending_delete(full_path,
                                                                 dentry, xid);
                         if (rc == 0)
                                 cifs_drop_nlink(inode);
                 }
-                if (rc == -ETXTBSY)
-                        rc = -EBUSY;
         } else if ((rc == -EACCES) && (dosattr == 0) && inode) {
                 attrs = kzalloc(sizeof(*attrs), GFP_KERNEL);
                 if (attrs == NULL) {
@@ -1518,7 +1516,7 @@ cifs_do_rename(const unsigned int xid, struct dentry *from_dentry,
          * source. Note that cross directory moves do not work with
          * rename by filehandle to various Windows servers.
          */
-        if (rc == 0 || rc != -ETXTBSY)
+        if (rc == 0 || rc != -EBUSY)
                 goto do_rename_exit;
 
         /* open-file renames don't work across directories */
diff --git a/fs/cifs/netmisc.c b/fs/cifs/netmisc.c
index a82bc51fdc82..c0b25b28be6c 100644
--- a/fs/cifs/netmisc.c
+++ b/fs/cifs/netmisc.c
@@ -62,7 +62,7 @@ static const struct smb_to_posix_error mapping_table_ERRDOS[] = {
         {ERRdiffdevice, -EXDEV},
         {ERRnofiles, -ENOENT},
         {ERRwriteprot, -EROFS},
-        {ERRbadshare, -ETXTBSY},
+        {ERRbadshare, -EBUSY},
         {ERRlock, -EACCES},
         {ERRunsup, -EINVAL},
         {ERRnosuchshare, -ENXIO},
diff --git a/fs/dcache.c b/fs/dcache.c
index fbfae008ba44..e8bc3420d63e 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -2542,7 +2542,6 @@ static int prepend_path(const struct path *path,
         bool slash = false;
         int error = 0;
 
-        br_read_lock(&vfsmount_lock);
         while (dentry != root->dentry || vfsmnt != root->mnt) {
                 struct dentry * parent;
 
@@ -2572,8 +2571,6 @@ static int prepend_path(const struct path *path,
         if (!error && !slash)
                 error = prepend(buffer, buflen, "/", 1);
 
-out:
-        br_read_unlock(&vfsmount_lock);
         return error;
 
 global_root:
@@ -2590,7 +2587,7 @@ global_root:
                 error = prepend(buffer, buflen, "/", 1);
         if (!error)
                 error = is_mounted(vfsmnt) ? 1 : 2;
-        goto out;
+        return error;
 }
 
 /**
@@ -2617,9 +2614,11 @@ char *__d_path(const struct path *path,
         int error;
 
         prepend(&res, &buflen, "\0", 1);
+        br_read_lock(&vfsmount_lock);
         write_seqlock(&rename_lock);
         error = prepend_path(path, root, &res, &buflen);
         write_sequnlock(&rename_lock);
+        br_read_unlock(&vfsmount_lock);
 
         if (error < 0)
                 return ERR_PTR(error);
@@ -2636,9 +2635,11 @@ char *d_absolute_path(const struct path *path,
         int error;
 
         prepend(&res, &buflen, "\0", 1);
+        br_read_lock(&vfsmount_lock);
         write_seqlock(&rename_lock);
         error = prepend_path(path, &root, &res, &buflen);
         write_sequnlock(&rename_lock);
+        br_read_unlock(&vfsmount_lock);
 
         if (error > 1)
                 error = -EINVAL;
@@ -2702,11 +2703,13 @@ char *d_path(const struct path *path, char *buf, int buflen)
                 return path->dentry->d_op->d_dname(path->dentry, buf, buflen);
 
         get_fs_root(current->fs, &root);
+        br_read_lock(&vfsmount_lock);
         write_seqlock(&rename_lock);
         error = path_with_deleted(path, &root, &res, &buflen);
+        write_sequnlock(&rename_lock);
+        br_read_unlock(&vfsmount_lock);
         if (error < 0)
                 res = ERR_PTR(error);
-        write_sequnlock(&rename_lock);
         path_put(&root);
         return res;
 }
@@ -2830,6 +2833,7 @@ SYSCALL_DEFINE2(getcwd, char __user *, buf, unsigned long, size)
         get_fs_root_and_pwd(current->fs, &root, &pwd);
 
         error = -ENOENT;
+        br_read_lock(&vfsmount_lock);
         write_seqlock(&rename_lock);
         if (!d_unlinked(pwd.dentry)) {
                 unsigned long len;
@@ -2839,6 +2843,7 @@ SYSCALL_DEFINE2(getcwd, char __user *, buf, unsigned long, size)
                 prepend(&cwd, &buflen, "\0", 1);
                 error = prepend_path(&pwd, &root, &cwd, &buflen);
                 write_sequnlock(&rename_lock);
+                br_read_unlock(&vfsmount_lock);
 
                 if (error < 0)
                         goto out;
@@ -2859,6 +2864,7 @@ SYSCALL_DEFINE2(getcwd, char __user *, buf, unsigned long, size)
                 }
         } else {
                 write_sequnlock(&rename_lock);
+                br_read_unlock(&vfsmount_lock);
         }
 
 out:
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 4a01ba315262..3b83cd604796 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -335,9 +335,9 @@ struct ext4_group_desc
  */
 
 struct flex_groups {
-        atomic_t free_inodes;
-        atomic_t free_clusters;
-        atomic_t used_dirs;
+        atomic64_t      free_clusters;
+        atomic_t        free_inodes;
+        atomic_t        used_dirs;
 };
 
 #define EXT4_BG_INODE_UNINIT    0x0001 /* Inode table/bitmap not in use */
@@ -2617,7 +2617,7 @@ extern int ext4_move_extents(struct file *o_filp, struct file *d_filp,
 extern int __init ext4_init_pageio(void);
 extern void ext4_add_complete_io(ext4_io_end_t *io_end);
 extern void ext4_exit_pageio(void);
-extern void ext4_ioend_wait(struct inode *);
+extern void ext4_ioend_shutdown(struct inode *);
 extern void ext4_free_io_end(ext4_io_end_t *io);
 extern ext4_io_end_t *ext4_init_io_end(struct inode *inode, gfp_t flags);
 extern void ext4_end_io_work(struct work_struct *work);
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 28dd8eeea6a9..56efcaadf848 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -1584,10 +1584,12 @@ ext4_can_extents_be_merged(struct inode *inode, struct ext4_extent *ex1,
         unsigned short ext1_ee_len, ext2_ee_len, max_len;
 
         /*
-         * Make sure that either both extents are uninitialized, or
-         * both are _not_.
+         * Make sure that both extents are initialized. We don't merge
+         * uninitialized extents so that we can be sure that end_io code has
+         * the extent that was written properly split out and conversion to
+         * initialized is trivial.
          */
-        if (ext4_ext_is_uninitialized(ex1) ^ ext4_ext_is_uninitialized(ex2))
+        if (ext4_ext_is_uninitialized(ex1) || ext4_ext_is_uninitialized(ex2))
                 return 0;
 
         if (ext4_ext_is_uninitialized(ex1))
@@ -2923,7 +2925,7 @@ static int ext4_split_extent_at(handle_t *handle,
 {
         ext4_fsblk_t newblock;
         ext4_lblk_t ee_block;
-        struct ext4_extent *ex, newex, orig_ex;
+        struct ext4_extent *ex, newex, orig_ex, zero_ex;
         struct ext4_extent *ex2 = NULL;
         unsigned int ee_len, depth;
         int err = 0;
@@ -2943,6 +2945,10 @@ static int ext4_split_extent_at(handle_t *handle,
         newblock = split - ee_block + ext4_ext_pblock(ex);
 
         BUG_ON(split < ee_block || split >= (ee_block + ee_len));
+        BUG_ON(!ext4_ext_is_uninitialized(ex) &&
+               split_flag & (EXT4_EXT_MAY_ZEROOUT |
+                             EXT4_EXT_MARK_UNINIT1 |
+                             EXT4_EXT_MARK_UNINIT2));
 
         err = ext4_ext_get_access(handle, inode, path + depth);
         if (err)
@@ -2990,12 +2996,26 @@ static int ext4_split_extent_at(handle_t *handle,
         err = ext4_ext_insert_extent(handle, inode, path, &newex, flags);
         if (err == -ENOSPC && (EXT4_EXT_MAY_ZEROOUT & split_flag)) {
                 if (split_flag & (EXT4_EXT_DATA_VALID1|EXT4_EXT_DATA_VALID2)) {
-                        if (split_flag & EXT4_EXT_DATA_VALID1)
+                        if (split_flag & EXT4_EXT_DATA_VALID1) {
                                 err = ext4_ext_zeroout(inode, ex2);
-                        else
+                                zero_ex.ee_block = ex2->ee_block;
+                                zero_ex.ee_len = ext4_ext_get_actual_len(ex2);
+                                ext4_ext_store_pblock(&zero_ex,
+                                                      ext4_ext_pblock(ex2));
+                        } else {
                                 err = ext4_ext_zeroout(inode, ex);
-                } else
+                                zero_ex.ee_block = ex->ee_block;
+                                zero_ex.ee_len = ext4_ext_get_actual_len(ex);
+                                ext4_ext_store_pblock(&zero_ex,
+                                                      ext4_ext_pblock(ex));
+                        }
+                } else {
                         err = ext4_ext_zeroout(inode, &orig_ex);
+                        zero_ex.ee_block = orig_ex.ee_block;
+                        zero_ex.ee_len = ext4_ext_get_actual_len(&orig_ex);
+                        ext4_ext_store_pblock(&zero_ex,
+                                              ext4_ext_pblock(&orig_ex));
+                }
 
                 if (err)
                         goto fix_extent_len;
@@ -3003,6 +3023,12 @@ static int ext4_split_extent_at(handle_t *handle,
                 ex->ee_len = cpu_to_le16(ee_len);
                 ext4_ext_try_to_merge(handle, inode, path, ex);
                 err = ext4_ext_dirty(handle, inode, path + path->p_depth);
+                if (err)
+                        goto fix_extent_len;
+
+                /* update extent status tree */
+                err = ext4_es_zeroout(inode, &zero_ex);
+
                 goto out;
         } else if (err)
                 goto fix_extent_len;
@@ -3041,6 +3067,7 @@ static int ext4_split_extent(handle_t *handle,
         int err = 0;
         int uninitialized;
         int split_flag1, flags1;
+        int allocated = map->m_len;
 
         depth = ext_depth(inode);
         ex = path[depth].p_ext;
@@ -3060,20 +3087,29 @@ static int ext4_split_extent(handle_t *handle,
                                 map->m_lblk + map->m_len, split_flag1, flags1);
                 if (err)
                         goto out;
+        } else {
+                allocated = ee_len - (map->m_lblk - ee_block);
         }
-
+        /*
+         * Update path is required because previous ext4_split_extent_at() may
+         * result in split of original leaf or extent zeroout.
+         */
         ext4_ext_drop_refs(path);
         path = ext4_ext_find_extent(inode, map->m_lblk, path);
         if (IS_ERR(path))
                 return PTR_ERR(path);
+        depth = ext_depth(inode);
+        ex = path[depth].p_ext;
+        uninitialized = ext4_ext_is_uninitialized(ex);
+        split_flag1 = 0;
 
         if (map->m_lblk >= ee_block) {
-                split_flag1 = split_flag & (EXT4_EXT_MAY_ZEROOUT |
-                                            EXT4_EXT_DATA_VALID2);
-                if (uninitialized)
+                split_flag1 = split_flag & EXT4_EXT_DATA_VALID2;
+                if (uninitialized) {
                         split_flag1 |= EXT4_EXT_MARK_UNINIT1;
-                if (split_flag & EXT4_EXT_MARK_UNINIT2)
-                        split_flag1 |= EXT4_EXT_MARK_UNINIT2;
+                        split_flag1 |= split_flag & (EXT4_EXT_MAY_ZEROOUT |
+                                                     EXT4_EXT_MARK_UNINIT2);
+                }
                 err = ext4_split_extent_at(handle, inode, path,
                                 map->m_lblk, split_flag1, flags);
                 if (err)
@@ -3082,7 +3118,7 @@ static int ext4_split_extent(handle_t *handle,
 
         ext4_ext_show_leaf(inode, path);
 out:
-        return err ? err : map->m_len;
+        return err ? err : allocated;
 }
 
 /*
@@ -3137,6 +3173,7 @@ static int ext4_ext_convert_to_initialized(handle_t *handle,
         ee_block = le32_to_cpu(ex->ee_block);
         ee_len = ext4_ext_get_actual_len(ex);
         allocated = ee_len - (map->m_lblk - ee_block);
+        zero_ex.ee_len = 0;
 
         trace_ext4_ext_convert_to_initialized_enter(inode, map, ex);
 
@@ -3227,13 +3264,16 @@ static int ext4_ext_convert_to_initialized(handle_t *handle,
 
         if (EXT4_EXT_MAY_ZEROOUT & split_flag)
                 max_zeroout = sbi->s_extent_max_zeroout_kb >>
-                        inode->i_sb->s_blocksize_bits;
+                        (inode->i_sb->s_blocksize_bits - 10);
 
         /* If extent is less than s_max_zeroout_kb, zeroout directly */
         if (max_zeroout && (ee_len <= max_zeroout)) {
                 err = ext4_ext_zeroout(inode, ex);
                 if (err)
                         goto out;
+                zero_ex.ee_block = ex->ee_block;
+                zero_ex.ee_len = ext4_ext_get_actual_len(ex);
+                ext4_ext_store_pblock(&zero_ex, ext4_ext_pblock(ex));
 
                 err = ext4_ext_get_access(handle, inode, path + depth);
                 if (err)
@@ -3292,6 +3332,9 @@ static int ext4_ext_convert_to_initialized(handle_t *handle,
                 err = allocated;
 
 out:
+        /* If we have gotten a failure, don't zero out status tree */
+        if (!err)
+                err = ext4_es_zeroout(inode, &zero_ex);
         return err ? err : allocated;
 }
 
@@ -3374,8 +3417,19 @@ static int ext4_convert_unwritten_extents_endio(handle_t *handle,
                 "block %llu, max_blocks %u\n", inode->i_ino,
                   (unsigned long long)ee_block, ee_len);
 
-        /* If extent is larger than requested then split is required */
+        /* If extent is larger than requested it is a clear sign that we still
+         * have some extent state machine issues left. So extent_split is still
+         * required.
+         * TODO: Once all related issues will be fixed this situation should be
+         * illegal.
+         */
         if (ee_block != map->m_lblk || ee_len > map->m_len) {
+#ifdef EXT4_DEBUG
+                ext4_warning("Inode (%ld) finished: extent logical block %llu,"
+                             " len %u; IO logical block %llu, len %u\n",
+                             inode->i_ino, (unsigned long long)ee_block, ee_len,
+                             (unsigned long long)map->m_lblk, map->m_len);
+#endif
                 err = ext4_split_unwritten_extents(handle, inode, map, path,
                                                    EXT4_GET_BLOCKS_CONVERT);
                 if (err < 0)
@@ -3626,6 +3680,10 @@ ext4_ext_handle_uninitialized_extents(handle_t *handle, struct inode *inode,
                                                  path, map->m_len);
                 } else
                         err = ret;
+                map->m_flags |= EXT4_MAP_MAPPED;
+                if (allocated > map->m_len)
+                        allocated = map->m_len;
+                map->m_len = allocated;
                 goto out2;
         }
         /* buffered IO case */
@@ -3675,6 +3733,7 @@ out:
                                         allocated - map->m_len);
                 allocated = map->m_len;
         }
+        map->m_len = allocated;
 
         /*
          * If we have done fallocate with the offset that is already
@@ -4106,9 +4165,6 @@ got_allocated_blocks:
                         }
                 } else {
                         BUG_ON(allocated_clusters < reserved_clusters);
-                        /* We will claim quota for all newly allocated blocks.*/
-                        ext4_da_update_reserve_space(inode, allocated_clusters,
-                                                        1);
                         if (reserved_clusters < allocated_clusters) {
                                 struct ext4_inode_info *ei = EXT4_I(inode);
                                 int reservation = allocated_clusters -
@@ -4159,6 +4215,15 @@ got_allocated_blocks:
                                 ei->i_reserved_data_blocks += reservation;
                                 spin_unlock(&ei->i_block_reservation_lock);
                         }
+                        /*
+                         * We will claim quota for all newly allocated blocks.
+                         * We're updating the reserved space *after* the
+                         * correction above so we do not accidentally free
+                         * all the metadata reservation because we might
+                         * actually need it later on.
+                         */
+                        ext4_da_update_reserve_space(inode, allocated_clusters,
+                                                        1);
                 }
         }
 
@@ -4368,8 +4433,6 @@ long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len)
         if (len <= EXT_UNINIT_MAX_LEN << blkbits)
                 flags |= EXT4_GET_BLOCKS_NO_NORMALIZE;
 
-        /* Prevent race condition between unwritten */
-        ext4_flush_unwritten_io(inode);
 retry:
         while (ret >= 0 && ret < max_blocks) {
                 map.m_lblk = map.m_lblk + ret;
diff --git a/fs/ext4/extents_status.c b/fs/ext4/extents_status.c
index 95796a1b7522..fe3337a85ede 100644
--- a/fs/ext4/extents_status.c
+++ b/fs/ext4/extents_status.c
@@ -333,17 +333,27 @@ static void ext4_es_free_extent(struct inode *inode, struct extent_status *es)
 static int ext4_es_can_be_merged(struct extent_status *es1,
                                  struct extent_status *es2)
 {
-        if (es1->es_lblk + es1->es_len != es2->es_lblk)
+        if (ext4_es_status(es1) != ext4_es_status(es2))
                 return 0;
 
-        if (ext4_es_status(es1) != ext4_es_status(es2))
+        if (((__u64) es1->es_len) + es2->es_len > 0xFFFFFFFFULL)
                 return 0;
 
-        if ((ext4_es_is_written(es1) || ext4_es_is_unwritten(es1)) &&
-            (ext4_es_pblock(es1) + es1->es_len != ext4_es_pblock(es2)))
+        if (((__u64) es1->es_lblk) + es1->es_len != es2->es_lblk)
                 return 0;
 
-        return 1;
+        if ((ext4_es_is_written(es1) || ext4_es_is_unwritten(es1)) &&
+            (ext4_es_pblock(es1) + es1->es_len == ext4_es_pblock(es2)))
+                return 1;
+
+        if (ext4_es_is_hole(es1))
+                return 1;
+
+        /* we need to check delayed extent is without unwritten status */
+        if (ext4_es_is_delayed(es1) && !ext4_es_is_unwritten(es1))
+                return 1;
+
+        return 0;
 }
 
 static struct extent_status *
@@ -389,6 +399,179 @@ ext4_es_try_to_merge_right(struct inode *inode, struct extent_status *es)
         return es;
 }
 
+#ifdef ES_AGGRESSIVE_TEST
+static void ext4_es_insert_extent_ext_check(struct inode *inode,
+                                            struct extent_status *es)
+{
+        struct ext4_ext_path *path = NULL;
+        struct ext4_extent *ex;
+        ext4_lblk_t ee_block;
+        ext4_fsblk_t ee_start;
+        unsigned short ee_len;
+        int depth, ee_status, es_status;
+
+        path = ext4_ext_find_extent(inode, es->es_lblk, NULL);
+        if (IS_ERR(path))
+                return;
+
+        depth = ext_depth(inode);
+        ex = path[depth].p_ext;
+
+        if (ex) {
+
+                ee_block = le32_to_cpu(ex->ee_block);
+                ee_start = ext4_ext_pblock(ex);
+                ee_len = ext4_ext_get_actual_len(ex);
+
+                ee_status = ext4_ext_is_uninitialized(ex) ? 1 : 0;
+                es_status = ext4_es_is_unwritten(es) ? 1 : 0;
+
+                /*
+                 * Make sure ex and es are not overlap when we try to insert
+                 * a delayed/hole extent.
+                 */
+                if (!ext4_es_is_written(es) && !ext4_es_is_unwritten(es)) {
+                        if (in_range(es->es_lblk, ee_block, ee_len)) {
+                                pr_warn("ES insert assertation failed for "
+                                        "inode: %lu we can find an extent "
+                                        "at block [%d/%d/%llu/%c], but we "
+                                        "want to add an delayed/hole extent "
+                                        "[%d/%d/%llu/%llx]\n",
+                                        inode->i_ino, ee_block, ee_len,
+                                        ee_start, ee_status ? 'u' : 'w',
+                                        es->es_lblk, es->es_len,
+                                        ext4_es_pblock(es), ext4_es_status(es));
+                        }
+                        goto out;
+                }
+
+                /*
+                 * We don't check ee_block == es->es_lblk, etc. because es
+                 * might be a part of whole extent, vice versa.
+                 */
+                if (es->es_lblk < ee_block ||
+                    ext4_es_pblock(es) != ee_start + es->es_lblk - ee_block) {
+                        pr_warn("ES insert assertation failed for inode: %lu "
+                                "ex_status [%d/%d/%llu/%c] != "
+                                "es_status [%d/%d/%llu/%c]\n", inode->i_ino,
+                                ee_block, ee_len, ee_start,
+                                ee_status ? 'u' : 'w', es->es_lblk, es->es_len,
+                                ext4_es_pblock(es), es_status ? 'u' : 'w');
+                        goto out;
+                }
+
+                if (ee_status ^ es_status) {
+                        pr_warn("ES insert assertation failed for inode: %lu "
+                                "ex_status [%d/%d/%llu/%c] != "
+                                "es_status [%d/%d/%llu/%c]\n", inode->i_ino,
+                                ee_block, ee_len, ee_start,
+                                ee_status ? 'u' : 'w', es->es_lblk, es->es_len,
+                                ext4_es_pblock(es), es_status ? 'u' : 'w');
+                }
+        } else {
+                /*
+                 * We can't find an extent on disk.  So we need to make sure
+                 * that we don't want to add an written/unwritten extent.
+                 */
+                if (!ext4_es_is_delayed(es) && !ext4_es_is_hole(es)) {
+                        pr_warn("ES insert assertation failed for inode: %lu "
+                                "can't find an extent at block %d but we want "
+                                "to add an written/unwritten extent "
+                                "[%d/%d/%llu/%llx]\n", inode->i_ino,
+                                es->es_lblk, es->es_lblk, es->es_len,
+                                ext4_es_pblock(es), ext4_es_status(es));
+                }
+        }
+out:
+        if (path) {
+                ext4_ext_drop_refs(path);
+                kfree(path);
+        }
+}
+
+static void ext4_es_insert_extent_ind_check(struct inode *inode,
+                                            struct extent_status *es)
+{
+        struct ext4_map_blocks map;
+        int retval;
+
+        /*
+         * Here we call ext4_ind_map_blocks to lookup a block mapping because
+         * 'Indirect' structure is defined in indirect.c.  So we couldn't
+         * access direct/indirect tree from outside.  It is too dirty to define
+         * this function in indirect.c file.
+         */
+
+        map.m_lblk = es->es_lblk;
+        map.m_len = es->es_len;
+
+        retval = ext4_ind_map_blocks(NULL, inode, &map, 0);
+        if (retval > 0) {
+                if (ext4_es_is_delayed(es) || ext4_es_is_hole(es)) {
+                        /*
+                         * We want to add a delayed/hole extent but this
+                         * block has been allocated.
+                         */
+                        pr_warn("ES insert assertation failed for inode: %lu "
+                                "We can find blocks but we want to add a "
+                                "delayed/hole extent [%d/%d/%llu/%llx]\n",
+                                inode->i_ino, es->es_lblk, es->es_len,
+                                ext4_es_pblock(es), ext4_es_status(es));
+                        return;
+                } else if (ext4_es_is_written(es)) {
+                        if (retval != es->es_len) {
+                                pr_warn("ES insert assertation failed for "
+                                        "inode: %lu retval %d != es_len %d\n",
+                                        inode->i_ino, retval, es->es_len);
+                                return;
+                        }
+                        if (map.m_pblk != ext4_es_pblock(es)) {
+                                pr_warn("ES insert assertation failed for "
+                                        "inode: %lu m_pblk %llu != "
+                                        "es_pblk %llu\n",
+                                        inode->i_ino, map.m_pblk,
+                                        ext4_es_pblock(es));
+                                return;
+                        }
+                } else {
+                        /*
+                         * We don't need to check unwritten extent because
+                         * indirect-based file doesn't have it.
+                         */
+                        BUG_ON(1);
+                }
+        } else if (retval == 0) {
+                if (ext4_es_is_written(es)) {
+                        pr_warn("ES insert assertation failed for inode: %lu "
+                                "We can't find the block but we want to add "
+                                "an written extent [%d/%d/%llu/%llx]\n",
+                                inode->i_ino, es->es_lblk, es->es_len,
+                                ext4_es_pblock(es), ext4_es_status(es));
+                        return;
+                }
+        }
+}
+
+static inline void ext4_es_insert_extent_check(struct inode *inode,
+                                               struct extent_status *es)
+{
+        /*
+         * We don't need to worry about the race condition because
+         * caller takes i_data_sem locking.
+         */
+        BUG_ON(!rwsem_is_locked(&EXT4_I(inode)->i_data_sem));
+        if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))
+                ext4_es_insert_extent_ext_check(inode, es);
+        else
+                ext4_es_insert_extent_ind_check(inode, es);
+}
+#else
+static inline void ext4_es_insert_extent_check(struct inode *inode,
+                                               struct extent_status *es)
+{
+}
+#endif
+
 static int __es_insert_extent(struct inode *inode, struct extent_status *newes)
 {
         struct ext4_es_tree *tree = &EXT4_I(inode)->i_es_tree;
@@ -471,6 +654,8 @@ int ext4_es_insert_extent(struct inode *inode, ext4_lblk_t lblk,
         ext4_es_store_status(&newes, status);
         trace_ext4_es_insert_extent(inode, &newes);
 
+        ext4_es_insert_extent_check(inode, &newes);
+
         write_lock(&EXT4_I(inode)->i_es_lock);
         err = __es_remove_extent(inode, lblk, end);
         if (err != 0)
@@ -669,6 +854,23 @@ int ext4_es_remove_extent(struct inode *inode, ext4_lblk_t lblk,
         return err;
 }
 
+int ext4_es_zeroout(struct inode *inode, struct ext4_extent *ex)
+{
+        ext4_lblk_t  ee_block;
+        ext4_fsblk_t ee_pblock;
+        unsigned int ee_len;
+
+        ee_block  = le32_to_cpu(ex->ee_block);
+        ee_len    = ext4_ext_get_actual_len(ex);
+        ee_pblock = ext4_ext_pblock(ex);
+
+        if (ee_len == 0)
+                return 0;
+
+        return ext4_es_insert_extent(inode, ee_block, ee_len, ee_pblock,
+                                     EXTENT_STATUS_WRITTEN);
+}
+
 static int ext4_es_shrink(struct shrinker *shrink, struct shrink_control *sc)
 {
         struct ext4_sb_info *sbi = container_of(shrink,
diff --git a/fs/ext4/extents_status.h b/fs/ext4/extents_status.h
index f190dfe969da..d8e2d4dc311e 100644
--- a/fs/ext4/extents_status.h
+++ b/fs/ext4/extents_status.h
@@ -21,6 +21,12 @@
 #endif
 
 /*
+ * With ES_AGGRESSIVE_TEST defined, the result of es caching will be
+ * checked with old map_block's result.
+ */
+#define ES_AGGRESSIVE_TEST__
+
+/*
  * These flags live in the high bits of extent_status.es_pblk
  */
 #define EXTENT_STATUS_WRITTEN   (1ULL << 63)
@@ -33,6 +39,8 @@
                                  EXTENT_STATUS_DELAYED | \
                                  EXTENT_STATUS_HOLE)
 
+struct ext4_extent;
+
 struct extent_status {
         struct rb_node rb_node;
         ext4_lblk_t es_lblk;    /* first logical block extent covers */
@@ -58,6 +66,7 @@ extern void ext4_es_find_delayed_extent(struct inode *inode, ext4_lblk_t lblk,
                                         struct extent_status *es);
 extern int ext4_es_lookup_extent(struct inode *inode, ext4_lblk_t lblk,
                                  struct extent_status *es);
+extern int ext4_es_zeroout(struct inode *inode, struct ext4_extent *ex);
 
 static inline int ext4_es_is_written(struct extent_status *es)
 {
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index 32fd2b9075dd..6c5bb8d993fe 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -324,8 +324,8 @@ error_return:
 }
 
 struct orlov_stats {
+        __u64 free_clusters;
         __u32 free_inodes;
-        __u32 free_clusters;
         __u32 used_dirs;
 };
 
@@ -342,7 +342,7 @@ static void get_orlov_stats(struct super_block *sb, ext4_group_t g,
 
         if (flex_size > 1) {
                 stats->free_inodes = atomic_read(&flex_group[g].free_inodes);
-                stats->free_clusters = atomic_read(&flex_group[g].free_clusters);
+                stats->free_clusters = atomic64_read(&flex_group[g].free_clusters);
                 stats->used_dirs = atomic_read(&flex_group[g].used_dirs);
                 return;
         }
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 9ea0cde3fa9e..b3a5213bc73e 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -185,8 +185,6 @@ void ext4_evict_inode(struct inode *inode)
 
         trace_ext4_evict_inode(inode);
 
-        ext4_ioend_wait(inode);
-
         if (inode->i_nlink) {
                 /*
                  * When journalling data dirty buffers are tracked only in the
@@ -207,7 +205,8 @@ void ext4_evict_inode(struct inode *inode)
                  * don't use page cache.
                  */
                 if (ext4_should_journal_data(inode) &&
-                    (S_ISLNK(inode->i_mode) || S_ISREG(inode->i_mode))) {
+                    (S_ISLNK(inode->i_mode) || S_ISREG(inode->i_mode)) &&
+                    inode->i_ino != EXT4_JOURNAL_INO) {
                         journal_t *journal = EXT4_SB(inode->i_sb)->s_journal;
                         tid_t commit_tid = EXT4_I(inode)->i_datasync_tid;
 
@@ -216,6 +215,7 @@ void ext4_evict_inode(struct inode *inode)
                         filemap_write_and_wait(&inode->i_data);
                 }
                 truncate_inode_pages(&inode->i_data, 0);
+                ext4_ioend_shutdown(inode);
                 goto no_delete;
         }
 
@@ -225,6 +225,7 @@ void ext4_evict_inode(struct inode *inode)
         if (ext4_should_order_data(inode))
                 ext4_begin_ordered_truncate(inode, 0);
         truncate_inode_pages(&inode->i_data, 0);
+        ext4_ioend_shutdown(inode);
 
         if (is_bad_inode(inode))
                 goto no_delete;
@@ -482,6 +483,58 @@ static pgoff_t ext4_num_dirty_pages(struct inode *inode, pgoff_t idx,
         return num;
 }
 
+#ifdef ES_AGGRESSIVE_TEST
+static void ext4_map_blocks_es_recheck(handle_t *handle,
+                                       struct inode *inode,
+                                       struct ext4_map_blocks *es_map,
+                                       struct ext4_map_blocks *map,
+                                       int flags)
+{
+        int retval;
+
+        map->m_flags = 0;
+        /*
+         * There is a race window that the result is not the same.
+         * e.g. xfstests #223 when dioread_nolock enables.  The reason
+         * is that we lookup a block mapping in extent status tree with
+         * out taking i_data_sem.  So at the time the unwritten extent
+         * could be converted.
+         */
+        if (!(flags & EXT4_GET_BLOCKS_NO_LOCK))
+                down_read((&EXT4_I(inode)->i_data_sem));
+        if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)) {
+                retval = ext4_ext_map_blocks(handle, inode, map, flags &
+                                             EXT4_GET_BLOCKS_KEEP_SIZE);
+        } else {
+                retval = ext4_ind_map_blocks(handle, inode, map, flags &
+                                             EXT4_GET_BLOCKS_KEEP_SIZE);
+        }
+        if (!(flags & EXT4_GET_BLOCKS_NO_LOCK))
+                up_read((&EXT4_I(inode)->i_data_sem));
+        /*
+         * Clear EXT4_MAP_FROM_CLUSTER and EXT4_MAP_BOUNDARY flag
+         * because it shouldn't be marked in es_map->m_flags.
+         */
+        map->m_flags &= ~(EXT4_MAP_FROM_CLUSTER | EXT4_MAP_BOUNDARY);
+
+        /*
+         * We don't check m_len because extent will be collpased in status
+         * tree.  So the m_len might not equal.
+         */
+        if (es_map->m_lblk != map->m_lblk ||
+            es_map->m_flags != map->m_flags ||
+            es_map->m_pblk != map->m_pblk) {
+                printk("ES cache assertation failed for inode: %lu "
+                       "es_cached ex [%d/%d/%llu/%x] != "
+                       "found ex [%d/%d/%llu/%x] retval %d flags %x\n",
+                       inode->i_ino, es_map->m_lblk, es_map->m_len,
+                       es_map->m_pblk, es_map->m_flags, map->m_lblk,
+                       map->m_len, map->m_pblk, map->m_flags,
+                       retval, flags);
+        }
+}
+#endif /* ES_AGGRESSIVE_TEST */
+
 /*
  * The ext4_map_blocks() function tries to look up the requested blocks,
  * and returns if the blocks are already mapped.
@@ -509,6 +562,11 @@ int ext4_map_blocks(handle_t *handle, struct inode *inode,
 {
         struct extent_status es;
         int retval;
+#ifdef ES_AGGRESSIVE_TEST
+        struct ext4_map_blocks orig_map;
+
+        memcpy(&orig_map, map, sizeof(*map));
+#endif
 
         map->m_flags = 0;
         ext_debug("ext4_map_blocks(): inode %lu, flag %d, max_blocks %u,"
@@ -531,6 +589,10 @@ int ext4_map_blocks(handle_t *handle, struct inode *inode,
                 } else {
                         BUG_ON(1);
                 }
+#ifdef ES_AGGRESSIVE_TEST
+                ext4_map_blocks_es_recheck(handle, inode, map,
+                                           &orig_map, flags);
+#endif
                 goto found;
         }
 
@@ -551,6 +613,15 @@ int ext4_map_blocks(handle_t *handle, struct inode *inode,
                 int ret;
                 unsigned long long status;
 
+#ifdef ES_AGGRESSIVE_TEST
+                if (retval != map->m_len) {
+                        printk("ES len assertation failed for inode: %lu "
+                               "retval %d != map->m_len %d "
+                               "in %s (lookup)\n", inode->i_ino, retval,
+                               map->m_len, __func__);
+                }
+#endif
+
                 status = map->m_flags & EXT4_MAP_UNWRITTEN ?
                                 EXTENT_STATUS_UNWRITTEN : EXTENT_STATUS_WRITTEN;
                 if (!(flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE) &&
@@ -643,6 +714,24 @@ found:
                 int ret;
                 unsigned long long status;
 
+#ifdef ES_AGGRESSIVE_TEST
+                if (retval != map->m_len) {
+                        printk("ES len assertation failed for inode: %lu "
+                               "retval %d != map->m_len %d "
+                               "in %s (allocation)\n", inode->i_ino, retval,
+                               map->m_len, __func__);
+                }
+#endif
+
+                /*
+                 * If the extent has been zeroed out, we don't need to update
+                 * extent status tree.
+                 */
+                if ((flags & EXT4_GET_BLOCKS_PRE_IO) &&
+                    ext4_es_lookup_extent(inode, map->m_lblk, &es)) {
+                        if (ext4_es_is_written(&es))
+                                goto has_zeroout;
+                }
                 status = map->m_flags & EXT4_MAP_UNWRITTEN ?
                                 EXTENT_STATUS_UNWRITTEN : EXTENT_STATUS_WRITTEN;
                 if (!(flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE) &&
@@ -655,6 +744,7 @@ found:
                         retval = ret;
         }
 
+has_zeroout:
         up_write((&EXT4_I(inode)->i_data_sem));
         if (retval > 0 && map->m_flags & EXT4_MAP_MAPPED) {
                 int ret = check_block_validity(inode, map);
@@ -1216,6 +1306,55 @@ static int ext4_journalled_write_end(struct file *file,
 }
 
 /*
+ * Reserve a metadata for a single block located at lblock
+ */
+static int ext4_da_reserve_metadata(struct inode *inode, ext4_lblk_t lblock)
+{
+        int retries = 0;
+        struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
+        struct ext4_inode_info *ei = EXT4_I(inode);
+        unsigned int md_needed;
+        ext4_lblk_t save_last_lblock;
+        int save_len;
+
+        /*
+         * recalculate the amount of metadata blocks to reserve
+         * in order to allocate nrblocks
+         * worse case is one extent per block
+         */
+repeat:
+        spin_lock(&ei->i_block_reservation_lock);
+        /*
+         * ext4_calc_metadata_amount() has side effects, which we have
+         * to be prepared undo if we fail to claim space.
+         */
+        save_len = ei->i_da_metadata_calc_len;
+        save_last_lblock = ei->i_da_metadata_calc_last_lblock;
+        md_needed = EXT4_NUM_B2C(sbi,
+                                 ext4_calc_metadata_amount(inode, lblock));
+        trace_ext4_da_reserve_space(inode, md_needed);
+
+        /*
+         * We do still charge estimated metadata to the sb though;
+         * we cannot afford to run out of free blocks.
+         */
+        if (ext4_claim_free_clusters(sbi, md_needed, 0)) {
+                ei->i_da_metadata_calc_len = save_len;
+                ei->i_da_metadata_calc_last_lblock = save_last_lblock;
+                spin_unlock(&ei->i_block_reservation_lock);
+                if (ext4_should_retry_alloc(inode->i_sb, &retries)) {
+                        cond_resched();
+                        goto repeat;
+                }
+                return -ENOSPC;
+        }
+        ei->i_reserved_meta_blocks += md_needed;
+        spin_unlock(&ei->i_block_reservation_lock);
+
+        return 0;       /* success */
+}
+
+/*
  * Reserve a single cluster located at lblock
  */
 static int ext4_da_reserve_space(struct inode *inode, ext4_lblk_t lblock)
@@ -1263,7 +1402,7 @@ repeat:
                 ei->i_da_metadata_calc_last_lblock = save_last_lblock;
                 spin_unlock(&ei->i_block_reservation_lock);
                 if (ext4_should_retry_alloc(inode->i_sb, &retries)) {
-                        yield();
+                        cond_resched();
                         goto repeat;
                 }
                 dquot_release_reservation_block(inode, EXT4_C2B(sbi, 1));
@@ -1768,6 +1907,11 @@ static int ext4_da_map_blocks(struct inode *inode, sector_t iblock,
         struct extent_status es;
         int retval;
         sector_t invalid_block = ~((sector_t) 0xffff);
+#ifdef ES_AGGRESSIVE_TEST
+        struct ext4_map_blocks orig_map;
+
+        memcpy(&orig_map, map, sizeof(*map));
+#endif
 
         if (invalid_block < ext4_blocks_count(EXT4_SB(inode->i_sb)->s_es))
                 invalid_block = ~0;
@@ -1809,6 +1953,9 @@ static int ext4_da_map_blocks(struct inode *inode, sector_t iblock,
                 else
                         BUG_ON(1);
 
+#ifdef ES_AGGRESSIVE_TEST
+                ext4_map_blocks_es_recheck(NULL, inode, map, &orig_map, 0);
+#endif
                 return retval;
         }
 
@@ -1843,8 +1990,11 @@ add_delayed:
                  * XXX: __block_prepare_write() unmaps passed block,
                  * is it OK?
                  */
-                /* If the block was allocated from previously allocated cluster,
-                 * then we dont need to reserve it again. */
+                /*
+                 * If the block was allocated from previously allocated cluster,
+                 * then we don't need to reserve it again. However we still need
+                 * to reserve metadata for every block we're going to write.
+                 */
                 if (!(map->m_flags & EXT4_MAP_FROM_CLUSTER)) {
                         ret = ext4_da_reserve_space(inode, iblock);
                         if (ret) {
@@ -1852,6 +2002,13 @@ add_delayed:
                                 retval = ret;
                                 goto out_unlock;
                         }
+                } else {
+                        ret = ext4_da_reserve_metadata(inode, iblock);
+                        if (ret) {
+                                /* not enough space to reserve */
+                                retval = ret;
+                                goto out_unlock;
+                        }
                 }
 
                 ret = ext4_es_insert_extent(inode, map->m_lblk, map->m_len,
@@ -1873,6 +2030,15 @@ add_delayed:
                 int ret;
                 unsigned long long status;
 
+#ifdef ES_AGGRESSIVE_TEST
+                if (retval != map->m_len) {
+                        printk("ES len assertation failed for inode: %lu "
+                               "retval %d != map->m_len %d "
+                               "in %s (lookup)\n", inode->i_ino, retval,
+                               map->m_len, __func__);
+                }
+#endif
+
                 status = map->m_flags & EXT4_MAP_UNWRITTEN ?
                                 EXTENT_STATUS_UNWRITTEN : EXTENT_STATUS_WRITTEN;
                 ret = ext4_es_insert_extent(inode, map->m_lblk, map->m_len,
@@ -2908,8 +3074,8 @@ static int ext4_releasepage(struct page *page, gfp_t wait)
 
         trace_ext4_releasepage(page);
 
-        WARN_ON(PageChecked(page));
-        if (!page_has_buffers(page))
+        /* Page has dirty journalled data -> cannot release */
+        if (PageChecked(page))
                 return 0;
         if (journal)
                 return jbd2_journal_try_to_free_buffers(journal, page, wait);
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 7bb713a46fe4..ee6614bdb639 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -2804,8 +2804,8 @@ ext4_mb_mark_diskspace_used(struct ext4_allocation_context *ac,
         if (sbi->s_log_groups_per_flex) {
                 ext4_group_t flex_group = ext4_flex_group(sbi,
                                                           ac->ac_b_ex.fe_group);
-                atomic_sub(ac->ac_b_ex.fe_len,
-                           &sbi->s_flex_groups[flex_group].free_clusters);
+                atomic64_sub(ac->ac_b_ex.fe_len,
+                             &sbi->s_flex_groups[flex_group].free_clusters);
         }
 
         err = ext4_handle_dirty_metadata(handle, NULL, bitmap_bh);
@@ -3692,11 +3692,7 @@ repeat:
         if (free < needed && busy) {
                 busy = 0;
                 ext4_unlock_group(sb, group);
-                /*
-                 * Yield the CPU here so that we don't get soft lockup
-                 * in non preempt case.
-                 */
-                yield();
+                cond_resched();
                 goto repeat;
         }
 
@@ -4246,7 +4242,7 @@ ext4_fsblk_t ext4_mb_new_blocks(handle_t *handle,
                         ext4_claim_free_clusters(sbi, ar->len, ar->flags)) {
 
                         /* let others to free the space */
-                        yield();
+                        cond_resched();
                         ar->len = ar->len >> 1;
                 }
                 if (!ar->len) {
@@ -4464,7 +4460,6 @@ void ext4_free_blocks(handle_t *handle, struct inode *inode,
         struct buffer_head *bitmap_bh = NULL;
         struct super_block *sb = inode->i_sb;
         struct ext4_group_desc *gdp;
-        unsigned long freed = 0;
         unsigned int overflow;
         ext4_grpblk_t bit;
         struct buffer_head *gd_bh;
@@ -4666,14 +4661,12 @@ do_more:
 
         if (sbi->s_log_groups_per_flex) {
                 ext4_group_t flex_group = ext4_flex_group(sbi, block_group);
-                atomic_add(count_clusters,
-                           &sbi->s_flex_groups[flex_group].free_clusters);
+                atomic64_add(count_clusters,
+                             &sbi->s_flex_groups[flex_group].free_clusters);
         }
 
         ext4_mb_unload_buddy(&e4b);
 
-        freed += count;
-
         if (!(flags & EXT4_FREE_BLOCKS_NO_QUOT_UPDATE))
                 dquot_free_block(inode, EXT4_C2B(sbi, count_clusters));
 
@@ -4811,8 +4804,8 @@ int ext4_group_add_blocks(handle_t *handle, struct super_block *sb,
 
         if (sbi->s_log_groups_per_flex) {
                 ext4_group_t flex_group = ext4_flex_group(sbi, block_group);
-                atomic_add(EXT4_NUM_B2C(sbi, blocks_freed),
-                           &sbi->s_flex_groups[flex_group].free_clusters);
+                atomic64_add(EXT4_NUM_B2C(sbi, blocks_freed),
+                             &sbi->s_flex_groups[flex_group].free_clusters);
         }
 
         ext4_mb_unload_buddy(&e4b);
diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c
index 4e81d47aa8cb..33e1c086858b 100644
--- a/fs/ext4/move_extent.c
+++ b/fs/ext4/move_extent.c
@@ -32,16 +32,18 @@
  */
 static inline int
 get_ext_path(struct inode *inode, ext4_lblk_t lblock,
-                struct ext4_ext_path **path)
+                struct ext4_ext_path **orig_path)
 {
         int ret = 0;
+        struct ext4_ext_path *path;
 
-        *path = ext4_ext_find_extent(inode, lblock, *path);
-        if (IS_ERR(*path)) {
-                ret = PTR_ERR(*path);
-                *path = NULL;
-        } else if ((*path)[ext_depth(inode)].p_ext == NULL)
+        path = ext4_ext_find_extent(inode, lblock, *orig_path);
+        if (IS_ERR(path))
+                ret = PTR_ERR(path);
+        else if (path[ext_depth(inode)].p_ext == NULL)
                 ret = -ENODATA;
+        else
+                *orig_path = path;
 
         return ret;
 }
@@ -611,24 +613,25 @@ mext_check_coverage(struct inode *inode, ext4_lblk_t from, ext4_lblk_t count,
 {
         struct ext4_ext_path *path = NULL;
         struct ext4_extent *ext;
+        int ret = 0;
         ext4_lblk_t last = from + count;
         while (from < last) {
                 *err = get_ext_path(inode, from, &path);
                 if (*err)
-                        return 0;
+                        goto out;
                 ext = path[ext_depth(inode)].p_ext;
-                if (!ext) {
-                        ext4_ext_drop_refs(path);
-                        return 0;
-                }
-                if (uninit != ext4_ext_is_uninitialized(ext)) {
-                        ext4_ext_drop_refs(path);
-                        return 0;
-                }
+                if (uninit != ext4_ext_is_uninitialized(ext))
+                        goto out;
                 from += ext4_ext_get_actual_len(ext);
                 ext4_ext_drop_refs(path);
         }
-        return 1;
+        ret = 1;
+out:
+        if (path) {
+                ext4_ext_drop_refs(path);
+                kfree(path);
+        }
+        return ret;
 }
 
 /**
@@ -666,6 +669,14 @@ mext_replace_branches(handle_t *handle, struct inode *orig_inode,
         int replaced_count = 0;
         int dext_alen;
 
+        *err = ext4_es_remove_extent(orig_inode, from, count);
+        if (*err)
+                goto out;
+
+        *err = ext4_es_remove_extent(donor_inode, from, count);
+        if (*err)
+                goto out;
+
         /* Get the original extent for the block "orig_off" */
         *err = get_ext_path(orig_inode, orig_off, &orig_path);
         if (*err)
diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c
index 809b31003ecc..047a6de04a0a 100644
--- a/fs/ext4/page-io.c
+++ b/fs/ext4/page-io.c
@@ -50,11 +50,21 @@ void ext4_exit_pageio(void)
         kmem_cache_destroy(io_page_cachep);
 }
 
-void ext4_ioend_wait(struct inode *inode)
+/*
+ * This function is called by ext4_evict_inode() to make sure there is
+ * no more pending I/O completion work left to do.
+ */
+void ext4_ioend_shutdown(struct inode *inode)
 {
         wait_queue_head_t *wq = ext4_ioend_wq(inode);
 
         wait_event(*wq, (atomic_read(&EXT4_I(inode)->i_ioend_count) == 0));
+        /*
+         * We need to make sure the work structure is finished being
+         * used before we let the inode get destroyed.
+         */
+        if (work_pending(&EXT4_I(inode)->i_unwritten_work))
+                cancel_work_sync(&EXT4_I(inode)->i_unwritten_work);
 }
 
 static void put_io_page(struct ext4_io_page *io_page)
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index b2c8ee56eb98..c169477a62c9 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -1360,8 +1360,8 @@ static void ext4_update_super(struct super_block *sb,
             sbi->s_log_groups_per_flex) {
                 ext4_group_t flex_group;
                 flex_group = ext4_flex_group(sbi, group_data[0].group);
-                atomic_add(EXT4_NUM_B2C(sbi, free_blocks),
-                           &sbi->s_flex_groups[flex_group].free_clusters);
+                atomic64_add(EXT4_NUM_B2C(sbi, free_blocks),
+                             &sbi->s_flex_groups[flex_group].free_clusters);
                 atomic_add(EXT4_INODES_PER_GROUP(sb) * flex_gd->count,
                            &sbi->s_flex_groups[flex_group].free_inodes);
         }
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index b3818b48f418..5d6d53578124 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1927,8 +1927,8 @@ static int ext4_fill_flex_info(struct super_block *sb)
                 flex_group = ext4_flex_group(sbi, i);
                 atomic_add(ext4_free_inodes_count(sb, gdp),
                            &sbi->s_flex_groups[flex_group].free_inodes);
-                atomic_add(ext4_free_group_clusters(sb, gdp),
-                           &sbi->s_flex_groups[flex_group].free_clusters);
+                atomic64_add(ext4_free_group_clusters(sb, gdp),
+                             &sbi->s_flex_groups[flex_group].free_clusters);
                 atomic_add(ext4_used_dirs_count(sb, gdp),
                            &sbi->s_flex_groups[flex_group].used_dirs);
         }
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 21f46fb3a101..8067d3719e94 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -22,7 +22,6 @@
 #include <linux/mm.h>
 #include <linux/pagemap.h>
 #include <linux/kthread.h>
-#include <linux/freezer.h>
 #include <linux/writeback.h>
 #include <linux/blkdev.h>
 #include <linux/backing-dev.h>
@@ -88,20 +87,6 @@ static inline struct inode *wb_inode(struct list_head *head)
 #define CREATE_TRACE_POINTS
 #include <trace/events/writeback.h>
 
-/* Wakeup flusher thread or forker thread to fork it. Requires bdi->wb_lock. */
-static void bdi_wakeup_flusher(struct backing_dev_info *bdi)
-{
-        if (bdi->wb.task) {
-                wake_up_process(bdi->wb.task);
-        } else {
-                /*
-                 * The bdi thread isn't there, wake up the forker thread which
-                 * will create and run it.
-                 */
-                wake_up_process(default_backing_dev_info.wb.task);
-        }
-}
-
 static void bdi_queue_work(struct backing_dev_info *bdi,
                            struct wb_writeback_work *work)
 {
@@ -109,10 +94,9 @@ static void bdi_queue_work(struct backing_dev_info *bdi,
 
         spin_lock_bh(&bdi->wb_lock);
         list_add_tail(&work->list, &bdi->work_list);
-        if (!bdi->wb.task)
-                trace_writeback_nothread(bdi, work);
-        bdi_wakeup_flusher(bdi);
         spin_unlock_bh(&bdi->wb_lock);
+
+        mod_delayed_work(bdi_wq, &bdi->wb.dwork, 0);
 }
 
 static void
@@ -127,10 +111,8 @@ __bdi_start_writeback(struct backing_dev_info *bdi, long nr_pages,
          */
         work = kzalloc(sizeof(*work), GFP_ATOMIC);
         if (!work) {
-                if (bdi->wb.task) {
-                        trace_writeback_nowork(bdi);
-                        wake_up_process(bdi->wb.task);
-                }
+                trace_writeback_nowork(bdi);
+                mod_delayed_work(bdi_wq, &bdi->wb.dwork, 0);
                 return;
         }
 
@@ -177,9 +159,7 @@ void bdi_start_background_writeback(struct backing_dev_info *bdi)
          * writeback as soon as there is no other work to do.
          */
         trace_writeback_wake_background(bdi);
-        spin_lock_bh(&bdi->wb_lock);
-        bdi_wakeup_flusher(bdi);
-        spin_unlock_bh(&bdi->wb_lock);
+        mod_delayed_work(bdi_wq, &bdi->wb.dwork, 0);
 }
 
 /*
@@ -1020,66 +1000,48 @@ long wb_do_writeback(struct bdi_writeback *wb, int force_wait)
 
 /*
  * Handle writeback of dirty data for the device backed by this bdi. Also
- * wakes up periodically and does kupdated style flushing.
+ * reschedules periodically and does kupdated style flushing.
  */
-int bdi_writeback_thread(void *data)
+void bdi_writeback_workfn(struct work_struct *work)
 {
-        struct bdi_writeback *wb = data;
+        struct bdi_writeback *wb = container_of(to_delayed_work(work),
+                                                struct bdi_writeback, dwork);
         struct backing_dev_info *bdi = wb->bdi;
         long pages_written;
 
         current->flags |= PF_SWAPWRITE;
-        set_freezable();
-        wb->last_active = jiffies;
-
-        /*
-         * Our parent may run at a different priority, just set us to normal
-         */
-        set_user_nice(current, 0);
-
-        trace_writeback_thread_start(bdi);
 
-        while (!kthread_freezable_should_stop(NULL)) {
+        if (likely(!current_is_workqueue_rescuer() ||
+                   list_empty(&bdi->bdi_list))) {
                 /*
-                 * Remove own delayed wake-up timer, since we are already awake
-                 * and we'll take care of the periodic write-back.
+                 * The normal path.  Keep writing back @bdi until its
+                 * work_list is empty.  Note that this path is also taken
+                 * if @bdi is shutting down even when we're running off the
+                 * rescuer as work_list needs to be drained.
                  */
-                del_timer(&wb->wakeup_timer);
-
-                pages_written = wb_do_writeback(wb, 0);
-
+                do {
+                        pages_written = wb_do_writeback(wb, 0);
+                        trace_writeback_pages_written(pages_written);
+                } while (!list_empty(&bdi->work_list));
+        } else {
+                /*
+                 * bdi_wq can't get enough workers and we're running off
+                 * the emergency worker.  Don't hog it.  Hopefully, 1024 is
+                 * enough for efficient IO.
+                 */
+                pages_written = writeback_inodes_wb(&bdi->wb, 1024,
+                                                    WB_REASON_FORKER_THREAD);
                 trace_writeback_pages_written(pages_written);
-
-                if (pages_written)
-                        wb->last_active = jiffies;
-
-                set_current_state(TASK_INTERRUPTIBLE);
-                if (!list_empty(&bdi->work_list) || kthread_should_stop()) {
-                        __set_current_state(TASK_RUNNING);
-                        continue;
-                }
-
-                if (wb_has_dirty_io(wb) && dirty_writeback_interval)
-                        schedule_timeout(msecs_to_jiffies(dirty_writeback_interval * 10));
-                else {
-                        /*
-                         * We have nothing to do, so can go sleep without any
-                         * timeout and save power. When a work is queued or
-                         * something is made dirty - we will be woken up.
-                         */
-                        schedule();
-                }
         }
 
-        /* Flush any work that raced with us exiting */
-        if (!list_empty(&bdi->work_list))
-                wb_do_writeback(wb, 1);
+        if (!list_empty(&bdi->work_list) ||
+            (wb_has_dirty_io(wb) && dirty_writeback_interval))
+                queue_delayed_work(bdi_wq, &wb->dwork,
+                        msecs_to_jiffies(dirty_writeback_interval * 10));
 
-        trace_writeback_thread_stop(bdi);
-        return 0;
+        current->flags &= ~PF_SWAPWRITE;
 }
 
-
 /*
  * Start writeback of `nr_pages' pages.  If `nr_pages' is zero, write back
  * the whole world.
diff --git a/fs/internal.h b/fs/internal.h
index 507141fceb99..4be78237d896 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -125,3 +125,8 @@ extern int invalidate_inodes(struct super_block *, bool);
  * dcache.c
  */
 extern struct dentry *__d_alloc(struct super_block *, const struct qstr *);
+
+/*
+ * read_write.c
+ */
+extern ssize_t __kernel_write(struct file *, const char *, size_t, loff_t *);
diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c
index d6ee5aed56b1..325bc019ed88 100644
--- a/fs/jbd2/transaction.c
+++ b/fs/jbd2/transaction.c
@@ -1065,9 +1065,12 @@ out:
 void jbd2_journal_set_triggers(struct buffer_head *bh,
                                struct jbd2_buffer_trigger_type *type)
 {
-        struct journal_head *jh = bh2jh(bh);
+        struct journal_head *jh = jbd2_journal_grab_journal_head(bh);
 
+        if (WARN_ON(!jh))
+                return;
         jh->b_triggers = type;
+        jbd2_journal_put_journal_head(jh);
 }
 
 void jbd2_buffer_frozen_trigger(struct journal_head *jh, void *mapped_data,
@@ -1119,17 +1122,18 @@ int jbd2_journal_dirty_metadata(handle_t *handle, struct buffer_head *bh)
 {
         transaction_t *transaction = handle->h_transaction;
         journal_t *journal = transaction->t_journal;
-        struct journal_head *jh = bh2jh(bh);
+        struct journal_head *jh;
         int ret = 0;
 
-        jbd_debug(5, "journal_head %p\n", jh);
-        JBUFFER_TRACE(jh, "entry");
         if (is_handle_aborted(handle))
                 goto out;
-        if (!buffer_jbd(bh)) {
+        jh = jbd2_journal_grab_journal_head(bh);
+        if (!jh) {
                 ret = -EUCLEAN;
                 goto out;
         }
+        jbd_debug(5, "journal_head %p\n", jh);
+        JBUFFER_TRACE(jh, "entry");
 
         jbd_lock_bh_state(bh);
 
@@ -1220,6 +1224,7 @@ int jbd2_journal_dirty_metadata(handle_t *handle, struct buffer_head *bh)
         spin_unlock(&journal->j_list_lock);
 out_unlock_bh:
         jbd_unlock_bh_state(bh);
+        jbd2_journal_put_journal_head(jh);
 out:
         JBUFFER_TRACE(jh, "exit");
         WARN_ON(ret);   /* All errors are bugs, so dump the stack */
diff --git a/fs/namespace.c b/fs/namespace.c
index 50ca17d3cb45..d581e45c0a9f 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -798,6 +798,10 @@ static struct mount *clone_mnt(struct mount *old, struct dentry *root,
         }
 
         mnt->mnt.mnt_flags = old->mnt.mnt_flags & ~MNT_WRITE_HOLD;
+        /* Don't allow unprivileged users to change mount flags */
+        if ((flag & CL_UNPRIVILEGED) && (mnt->mnt.mnt_flags & MNT_READONLY))
+                mnt->mnt.mnt_flags |= MNT_LOCK_READONLY;
+
         atomic_inc(&sb->s_active);
         mnt->mnt.mnt_sb = sb;
         mnt->mnt.mnt_root = dget(root);
@@ -1713,6 +1717,9 @@ static int change_mount_flags(struct vfsmount *mnt, int ms_flags)
         if (readonly_request == __mnt_is_readonly(mnt))
                 return 0;
 
+        if (mnt->mnt_flags & MNT_LOCK_READONLY)
+                return -EPERM;
+
         if (readonly_request)
                 error = mnt_make_readonly(real_mount(mnt));
         else
@@ -2339,7 +2346,7 @@ static struct mnt_namespace *dup_mnt_ns(struct mnt_namespace *mnt_ns,
         /* First pass: copy the tree topology */
         copy_flags = CL_COPY_ALL | CL_EXPIRE;
         if (user_ns != mnt_ns->user_ns)
-                copy_flags |= CL_SHARED_TO_SLAVE;
+                copy_flags |= CL_SHARED_TO_SLAVE | CL_UNPRIVILEGED;
         new = copy_tree(old, old->mnt.mnt_root, copy_flags);
         if (IS_ERR(new)) {
                 up_write(&namespace_sem);
@@ -2732,6 +2739,51 @@ bool our_mnt(struct vfsmount *mnt)
         return check_mnt(real_mount(mnt));
 }
 
+bool current_chrooted(void)
+{
+        /* Does the current process have a non-standard root */
+        struct path ns_root;
+        struct path fs_root;
+        bool chrooted;
+
+        /* Find the namespace root */
+        ns_root.mnt = &current->nsproxy->mnt_ns->root->mnt;
+        ns_root.dentry = ns_root.mnt->mnt_root;
+        path_get(&ns_root);
+        while (d_mountpoint(ns_root.dentry) && follow_down_one(&ns_root))
+                ;
+
+        get_fs_root(current->fs, &fs_root);
+
+        chrooted = !path_equal(&fs_root, &ns_root);
+
+        path_put(&fs_root);
+        path_put(&ns_root);
+
+        return chrooted;
+}
+
+void update_mnt_policy(struct user_namespace *userns)
+{
+        struct mnt_namespace *ns = current->nsproxy->mnt_ns;
+        struct mount *mnt;
+
+        down_read(&namespace_sem);
+        list_for_each_entry(mnt, &ns->list, mnt_list) {
+                switch (mnt->mnt.mnt_sb->s_magic) {
+                case SYSFS_MAGIC:
+                        userns->may_mount_sysfs = true;
+                        break;
+                case PROC_SUPER_MAGIC:
+                        userns->may_mount_proc = true;
+                        break;
+                }
+                if (userns->may_mount_sysfs && userns->may_mount_proc)
+                        break;
+        }
+        up_read(&namespace_sem);
+}
+
 static void *mntns_get(struct task_struct *task)
 {
         struct mnt_namespace *ns = NULL;
diff --git a/fs/nfs/blocklayout/blocklayoutdm.c b/fs/nfs/blocklayout/blocklayoutdm.c
index 737d839bc17b..6fc7b5cae92b 100644
--- a/fs/nfs/blocklayout/blocklayoutdm.c
+++ b/fs/nfs/blocklayout/blocklayoutdm.c
@@ -55,7 +55,8 @@ static void dev_remove(struct net *net, dev_t dev)
 
         bl_pipe_msg.bl_wq = &nn->bl_wq;
         memset(msg, 0, sizeof(*msg));
-        msg->data = kzalloc(1 + sizeof(bl_umount_request), GFP_NOFS);
+        msg->len = sizeof(bl_msg) + bl_msg.totallen;
+        msg->data = kzalloc(msg->len, GFP_NOFS);
         if (!msg->data)
                 goto out;
 
@@ -66,7 +67,6 @@ static void dev_remove(struct net *net, dev_t dev)
         memcpy(msg->data, &bl_msg, sizeof(bl_msg));
         dataptr = (uint8_t *) msg->data;
         memcpy(&dataptr[sizeof(bl_msg)], &bl_umount_request, sizeof(bl_umount_request));
-        msg->len = sizeof(bl_msg) + bl_msg.totallen;
 
         add_wait_queue(&nn->bl_wq, &wq);
         if (rpc_queue_upcall(nn->bl_device_pipe, msg) < 0) {
diff --git a/fs/nfs/idmap.c b/fs/nfs/idmap.c
index dc0f98dfa717..c516da5873fd 100644
--- a/fs/nfs/idmap.c
+++ b/fs/nfs/idmap.c
@@ -726,9 +726,9 @@ out1:
         return ret;
 }
 
-static int nfs_idmap_instantiate(struct key *key, struct key *authkey, char *data)
+static int nfs_idmap_instantiate(struct key *key, struct key *authkey, char *data, size_t datalen)
 {
-        return key_instantiate_and_link(key, data, strlen(data) + 1,
+        return key_instantiate_and_link(key, data, datalen,
                                         id_resolver_cache->thread_keyring,
                                         authkey);
 }
@@ -738,6 +738,7 @@ static int nfs_idmap_read_and_verify_message(struct idmap_msg *im,
                 struct key *key, struct key *authkey)
 {
         char id_str[NFS_UINT_MAXLEN];
+        size_t len;
         int ret = -ENOKEY;
 
         /* ret = -ENOKEY */
@@ -747,13 +748,15 @@ static int nfs_idmap_read_and_verify_message(struct idmap_msg *im,
         case IDMAP_CONV_NAMETOID:
                 if (strcmp(upcall->im_name, im->im_name) != 0)
                         break;
-                sprintf(id_str, "%d", im->im_id);
-                ret = nfs_idmap_instantiate(key, authkey, id_str);
+                /* Note: here we store the NUL terminator too */
+                len = sprintf(id_str, "%d", im->im_id) + 1;
+                ret = nfs_idmap_instantiate(key, authkey, id_str, len);
                 break;
         case IDMAP_CONV_IDTONAME:
                 if (upcall->im_id != im->im_id)
                         break;
-                ret = nfs_idmap_instantiate(key, authkey, im->im_name);
+                len = strlen(im->im_name);
+                ret = nfs_idmap_instantiate(key, authkey, im->im_name, len);
                 break;
         default:
                 ret = -EINVAL;
diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c
index 49eeb044c109..4fb234d3aefb 100644
--- a/fs/nfs/nfs4filelayout.c
+++ b/fs/nfs/nfs4filelayout.c
@@ -129,7 +129,6 @@ static void filelayout_fenceme(struct inode *inode, struct pnfs_layout_hdr *lo)
 {
         if (!test_and_clear_bit(NFS_LAYOUT_RETURN, &lo->plh_flags))
                 return;
-        clear_bit(NFS_INO_LAYOUTCOMMIT, &NFS_I(inode)->flags);
         pnfs_return_layout(inode);
 }
 
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index b2671cb0f901..26431cf62ddb 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -2632,7 +2632,7 @@ nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
         int status;
 
         if (pnfs_ld_layoutret_on_setattr(inode))
-                pnfs_return_layout(inode);
+                pnfs_commit_and_return_layout(inode);
 
         nfs_fattr_init(fattr);
         
@@ -6416,22 +6416,8 @@ nfs4_layoutcommit_done(struct rpc_task *task, void *calldata)
 static void nfs4_layoutcommit_release(void *calldata)
 {
         struct nfs4_layoutcommit_data *data = calldata;
-        struct pnfs_layout_segment *lseg, *tmp;
-        unsigned long *bitlock = &NFS_I(data->args.inode)->flags;
 
         pnfs_cleanup_layoutcommit(data);
-        /* Matched by references in pnfs_set_layoutcommit */
-        list_for_each_entry_safe(lseg, tmp, &data->lseg_list, pls_lc_list) {
-                list_del_init(&lseg->pls_lc_list);
-                if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT,
-                                       &lseg->pls_flags))
-                        pnfs_put_lseg(lseg);
-        }
-
-        clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock);
-        smp_mb__after_clear_bit();
-        wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING);
-
         put_rpccred(data->cred);
         kfree(data);
 }
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index 48ac5aad6258..4bdffe0ba025 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -417,6 +417,16 @@ should_free_lseg(struct pnfs_layout_range *lseg_range,
                lo_seg_intersecting(lseg_range, recall_range);
 }
 
+static bool pnfs_lseg_dec_and_remove_zero(struct pnfs_layout_segment *lseg,
+                struct list_head *tmp_list)
+{
+        if (!atomic_dec_and_test(&lseg->pls_refcount))
+                return false;
+        pnfs_layout_remove_lseg(lseg->pls_layout, lseg);
+        list_add(&lseg->pls_list, tmp_list);
+        return true;
+}
+
 /* Returns 1 if lseg is removed from list, 0 otherwise */
 static int mark_lseg_invalid(struct pnfs_layout_segment *lseg,
                              struct list_head *tmp_list)
@@ -430,11 +440,8 @@ static int mark_lseg_invalid(struct pnfs_layout_segment *lseg,
                  */
                 dprintk("%s: lseg %p ref %d\n", __func__, lseg,
                         atomic_read(&lseg->pls_refcount));
-                if (atomic_dec_and_test(&lseg->pls_refcount)) {
-                        pnfs_layout_remove_lseg(lseg->pls_layout, lseg);
-                        list_add(&lseg->pls_list, tmp_list);
+                if (pnfs_lseg_dec_and_remove_zero(lseg, tmp_list))
                         rv = 1;
-                }
         }
         return rv;
 }
@@ -777,6 +784,21 @@ send_layoutget(struct pnfs_layout_hdr *lo,
         return lseg;
 }
 
+static void pnfs_clear_layoutcommit(struct inode *inode,
+                struct list_head *head)
+{
+        struct nfs_inode *nfsi = NFS_I(inode);
+        struct pnfs_layout_segment *lseg, *tmp;
+
+        if (!test_and_clear_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags))
+                return;
+        list_for_each_entry_safe(lseg, tmp, &nfsi->layout->plh_segs, pls_list) {
+                if (!test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, &lseg->pls_flags))
+                        continue;
+                pnfs_lseg_dec_and_remove_zero(lseg, head);
+        }
+}
+
 /*
  * Initiates a LAYOUTRETURN(FILE), and removes the pnfs_layout_hdr
  * when the layout segment list is empty.
@@ -808,6 +830,7 @@ _pnfs_return_layout(struct inode *ino)
         /* Reference matched in nfs4_layoutreturn_release */
         pnfs_get_layout_hdr(lo);
         empty = list_empty(&lo->plh_segs);
+        pnfs_clear_layoutcommit(ino, &tmp_list);
         pnfs_mark_matching_lsegs_invalid(lo, &tmp_list, NULL);
         /* Don't send a LAYOUTRETURN if list was initially empty */
         if (empty) {
@@ -820,8 +843,6 @@ _pnfs_return_layout(struct inode *ino)
         spin_unlock(&ino->i_lock);
         pnfs_free_lseg_list(&tmp_list);
 
-        WARN_ON(test_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags));
-
         lrp = kzalloc(sizeof(*lrp), GFP_KERNEL);
         if (unlikely(lrp == NULL)) {
                 status = -ENOMEM;
@@ -845,6 +866,33 @@ out:
 }
 EXPORT_SYMBOL_GPL(_pnfs_return_layout);
 
+int
+pnfs_commit_and_return_layout(struct inode *inode)
+{
+        struct pnfs_layout_hdr *lo;
+        int ret;
+
+        spin_lock(&inode->i_lock);
+        lo = NFS_I(inode)->layout;
+        if (lo == NULL) {
+                spin_unlock(&inode->i_lock);
+                return 0;
+        }
+        pnfs_get_layout_hdr(lo);
+        /* Block new layoutgets and read/write to ds */
+        lo->plh_block_lgets++;
+        spin_unlock(&inode->i_lock);
+        filemap_fdatawait(inode->i_mapping);
+        ret = pnfs_layoutcommit_inode(inode, true);
+        if (ret == 0)
+                ret = _pnfs_return_layout(inode);
+        spin_lock(&inode->i_lock);
+        lo->plh_block_lgets--;
+        spin_unlock(&inode->i_lock);
+        pnfs_put_layout_hdr(lo);
+        return ret;
+}
+
 bool pnfs_roc(struct inode *ino)
 {
         struct pnfs_layout_hdr *lo;
@@ -1458,7 +1506,6 @@ static void pnfs_ld_handle_write_error(struct nfs_write_data *data)
         dprintk("pnfs write error = %d\n", hdr->pnfs_error);
         if (NFS_SERVER(hdr->inode)->pnfs_curr_ld->flags &
             PNFS_LAYOUTRET_ON_ERROR) {
-                clear_bit(NFS_INO_LAYOUTCOMMIT, &NFS_I(hdr->inode)->flags);
                 pnfs_return_layout(hdr->inode);
         }
         if (!test_and_set_bit(NFS_IOHDR_REDO, &hdr->flags))
@@ -1613,7 +1660,6 @@ static void pnfs_ld_handle_read_error(struct nfs_read_data *data)
         dprintk("pnfs read error = %d\n", hdr->pnfs_error);
         if (NFS_SERVER(hdr->inode)->pnfs_curr_ld->flags &
             PNFS_LAYOUTRET_ON_ERROR) {
-                clear_bit(NFS_INO_LAYOUTCOMMIT, &NFS_I(hdr->inode)->flags);
                 pnfs_return_layout(hdr->inode);
         }
         if (!test_and_set_bit(NFS_IOHDR_REDO, &hdr->flags))
@@ -1746,11 +1792,27 @@ static void pnfs_list_write_lseg(struct inode *inode, struct list_head *listp)
 
         list_for_each_entry(lseg, &NFS_I(inode)->layout->plh_segs, pls_list) {
                 if (lseg->pls_range.iomode == IOMODE_RW &&
-                    test_bit(NFS_LSEG_LAYOUTCOMMIT, &lseg->pls_flags))
+                    test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, &lseg->pls_flags))
                         list_add(&lseg->pls_lc_list, listp);
         }
 }
 
+static void pnfs_list_write_lseg_done(struct inode *inode, struct list_head *listp)
+{
+        struct pnfs_layout_segment *lseg, *tmp;
+        unsigned long *bitlock = &NFS_I(inode)->flags;
+
+        /* Matched by references in pnfs_set_layoutcommit */
+        list_for_each_entry_safe(lseg, tmp, listp, pls_lc_list) {
+                list_del_init(&lseg->pls_lc_list);
+                pnfs_put_lseg(lseg);
+        }
+
+        clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock);
+        smp_mb__after_clear_bit();
+        wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING);
+}
+
 void pnfs_set_lo_fail(struct pnfs_layout_segment *lseg)
 {
         pnfs_layout_io_set_failed(lseg->pls_layout, lseg->pls_range.iomode);
@@ -1795,6 +1857,7 @@ void pnfs_cleanup_layoutcommit(struct nfs4_layoutcommit_data *data)
 
         if (nfss->pnfs_curr_ld->cleanup_layoutcommit)
                 nfss->pnfs_curr_ld->cleanup_layoutcommit(data);
+        pnfs_list_write_lseg_done(data->args.inode, &data->lseg_list);
 }
 
 /*
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
index 94ba80417748..f5f8a470a647 100644
--- a/fs/nfs/pnfs.h
+++ b/fs/nfs/pnfs.h
@@ -219,6 +219,7 @@ void pnfs_set_layoutcommit(struct nfs_write_data *wdata);
 void pnfs_cleanup_layoutcommit(struct nfs4_layoutcommit_data *data);
 int pnfs_layoutcommit_inode(struct inode *inode, bool sync);
 int _pnfs_return_layout(struct inode *);
+int pnfs_commit_and_return_layout(struct inode *);
 void pnfs_ld_write_done(struct nfs_write_data *);
 void pnfs_ld_read_done(struct nfs_read_data *);
 struct pnfs_layout_segment *pnfs_update_layout(struct inode *ino,
@@ -407,6 +408,11 @@ static inline int pnfs_return_layout(struct inode *ino)
         return 0;
 }
 
+static inline int pnfs_commit_and_return_layout(struct inode *inode)
+{
+        return 0;
+}
+
 static inline bool
 pnfs_ld_layoutret_on_setattr(struct inode *inode)
 {
diff --git a/fs/nfsd/nfscache.c b/fs/nfsd/nfscache.c
index 62c1ee128aeb..ca05f6dc3544 100644
--- a/fs/nfsd/nfscache.c
+++ b/fs/nfsd/nfscache.c
@@ -102,7 +102,8 @@ nfsd_reply_cache_free_locked(struct svc_cacherep *rp)
 {
         if (rp->c_type == RC_REPLBUFF)
                 kfree(rp->c_replvec.iov_base);
-        hlist_del(&rp->c_hash);
+        if (!hlist_unhashed(&rp->c_hash))
+                hlist_del(&rp->c_hash);
         list_del(&rp->c_lru);
         --num_drc_entries;
         kmem_cache_free(drc_slab, rp);
@@ -118,6 +119,10 @@ nfsd_reply_cache_free(struct svc_cacherep *rp)
 
 int nfsd_reply_cache_init(void)
 {
+        INIT_LIST_HEAD(&lru_head);
+        max_drc_entries = nfsd_cache_size_limit();
+        num_drc_entries = 0;
+
         register_shrinker(&nfsd_reply_cache_shrinker);
         drc_slab = kmem_cache_create("nfsd_drc", sizeof(struct svc_cacherep),
                                         0, 0, NULL);
@@ -128,10 +133,6 @@ int nfsd_reply_cache_init(void)
         if (!cache_hash)
                 goto out_nomem;
 
-        INIT_LIST_HEAD(&lru_head);
-        max_drc_entries = nfsd_cache_size_limit();
-        num_drc_entries = 0;
-
         return 0;
 out_nomem:
         printk(KERN_ERR "nfsd: failed to allocate reply cache\n");
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 2a7eb536de0b..2b2e2396a869 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -1013,6 +1013,7 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
         int                     host_err;
         int                     stable = *stablep;
         int                     use_wgather;
+        loff_t                  pos = offset;
 
         dentry = file->f_path.dentry;
         inode = dentry->d_inode;
@@ -1025,7 +1026,7 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
 
         /* Write the data. */
         oldfs = get_fs(); set_fs(KERNEL_DS);
-        host_err = vfs_writev(file, (struct iovec __user *)vec, vlen, &offset);
+        host_err = vfs_writev(file, (struct iovec __user *)vec, vlen, &pos);
         set_fs(oldfs);
         if (host_err < 0)
                 goto out_nfserr;
diff --git a/fs/pnode.c b/fs/pnode.c
index 3e000a51ac0d..8b29d2164da6 100644
--- a/fs/pnode.c
+++ b/fs/pnode.c
@@ -9,6 +9,7 @@
 #include <linux/mnt_namespace.h>
 #include <linux/mount.h>
 #include <linux/fs.h>
+#include <linux/nsproxy.h>
 #include "internal.h"
 #include "pnode.h"
 
@@ -220,6 +221,7 @@ static struct mount *get_source(struct mount *dest,
 int propagate_mnt(struct mount *dest_mnt, struct dentry *dest_dentry,
                     struct mount *source_mnt, struct list_head *tree_list)
 {
+        struct user_namespace *user_ns = current->nsproxy->mnt_ns->user_ns;
         struct mount *m, *child;
         int ret = 0;
         struct mount *prev_dest_mnt = dest_mnt;
@@ -237,6 +239,10 @@ int propagate_mnt(struct mount *dest_mnt, struct dentry *dest_dentry,
 
                 source =  get_source(m, prev_dest_mnt, prev_src_mnt, &type);
 
+                /* Notice when we are propagating across user namespaces */
+                if (m->mnt_ns->user_ns != user_ns)
+                        type |= CL_UNPRIVILEGED;
+
                 child = copy_tree(source, source->mnt.mnt_root, type);
                 if (IS_ERR(child)) {
                         ret = PTR_ERR(child);
diff --git a/fs/pnode.h b/fs/pnode.h
index 19b853a3445c..a0493d5ebfbf 100644
--- a/fs/pnode.h
+++ b/fs/pnode.h
@@ -23,6 +23,7 @@
 #define CL_MAKE_SHARED          0x08
 #define CL_PRIVATE              0x10
 #define CL_SHARED_TO_SLAVE      0x20
+#define CL_UNPRIVILEGED         0x40
 
 static inline void set_mnt_shared(struct mount *mnt)
 {
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index a86aebc9ba7c..869116c2afbe 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -446,9 +446,10 @@ static const struct file_operations proc_reg_file_ops_no_compat = {
 
 struct inode *proc_get_inode(struct super_block *sb, struct proc_dir_entry *de)
 {
-        struct inode *inode = iget_locked(sb, de->low_ino);
+        struct inode *inode = new_inode_pseudo(sb);
 
-        if (inode && (inode->i_state & I_NEW)) {
+        if (inode) {
+                inode->i_ino = de->low_ino;
                 inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
                 PROC_I(inode)->pde = de;
 
@@ -476,7 +477,6 @@ struct inode *proc_get_inode(struct super_block *sb, struct proc_dir_entry *de)
                                 inode->i_fop = de->proc_fops;
                         }
                 }
-                unlock_new_inode(inode);
         } else
                pde_put(de);
         return inode;
diff --git a/fs/proc/root.c b/fs/proc/root.c
index c6e9fac26bac..9c7fab1d23f0 100644
--- a/fs/proc/root.c
+++ b/fs/proc/root.c
@@ -16,6 +16,7 @@
 #include <linux/sched.h>
 #include <linux/module.h>
 #include <linux/bitops.h>
+#include <linux/user_namespace.h>
 #include <linux/mount.h>
 #include <linux/pid_namespace.h>
 #include <linux/parser.h>
@@ -108,6 +109,9 @@ static struct dentry *proc_mount(struct file_system_type *fs_type,
         } else {
                 ns = task_active_pid_ns(current);
                 options = data;
+
+                if (!current_user_ns()->may_mount_proc)
+                        return ERR_PTR(-EPERM);
         }
 
         sb = sget(fs_type, proc_test_super, proc_set_super, flags, ns);
diff --git a/fs/read_write.c b/fs/read_write.c
index a698eff457fb..e6ddc8dceb96 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -17,6 +17,7 @@
 #include <linux/splice.h>
 #include <linux/compat.h>
 #include "read_write.h"
+#include "internal.h"
 
 #include <asm/uaccess.h>
 #include <asm/unistd.h>
@@ -417,6 +418,33 @@ ssize_t do_sync_write(struct file *filp, const char __user *buf, size_t len, lof
 
 EXPORT_SYMBOL(do_sync_write);
 
+ssize_t __kernel_write(struct file *file, const char *buf, size_t count, loff_t *pos)
+{
+        mm_segment_t old_fs;
+        const char __user *p;
+        ssize_t ret;
+
+        if (!file->f_op || (!file->f_op->write && !file->f_op->aio_write))
+                return -EINVAL;
+
+        old_fs = get_fs();
+        set_fs(get_ds());
+        p = (__force const char __user *)buf;
+        if (count > MAX_RW_COUNT)
+                count =  MAX_RW_COUNT;
+        if (file->f_op->write)
+                ret = file->f_op->write(file, p, count, pos);
+        else
+                ret = do_sync_write(file, p, count, pos);
+        set_fs(old_fs);
+        if (ret > 0) {
+                fsnotify_modify(file);
+                add_wchar(current, ret);
+        }
+        inc_syscw(current);
+        return ret;
+}
+
 ssize_t vfs_write(struct file *file, const char __user *buf, size_t count, loff_t *pos)
 {
         ssize_t ret;
diff --git a/fs/splice.c b/fs/splice.c
index 718bd0056384..29e394e49ddd 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -31,6 +31,7 @@
 #include <linux/security.h>
 #include <linux/gfp.h>
 #include <linux/socket.h>
+#include "internal.h"
 
 /*
  * Attempt to steal a page from a pipe buffer. This should perhaps go into
@@ -1048,9 +1049,10 @@ static int write_pipe_buf(struct pipe_inode_info *pipe, struct pipe_buffer *buf,
 {
         int ret;
         void *data;
+        loff_t tmp = sd->pos;
 
         data = buf->ops->map(pipe, buf, 0);
-        ret = kernel_write(sd->u.file, data + buf->offset, sd->len, sd->pos);
+        ret = __kernel_write(sd->u.file, data + buf->offset, sd->len, &tmp);
         buf->ops->unmap(pipe, buf, data);
 
         return ret;
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index 2fbdff6be25c..e14512678c9b 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -1020,6 +1020,8 @@ static int sysfs_readdir(struct file * filp, void * dirent, filldir_t filldir)
                 ino = parent_sd->s_ino;
                 if (filldir(dirent, ".", 1, filp->f_pos, ino, DT_DIR) == 0)
                         filp->f_pos++;
+                else
+                        return 0;
         }
         if (filp->f_pos == 1) {
                 if (parent_sd->s_parent)
@@ -1028,6 +1030,8 @@ static int sysfs_readdir(struct file * filp, void * dirent, filldir_t filldir)
                         ino = parent_sd->s_ino;
                 if (filldir(dirent, "..", 2, filp->f_pos, ino, DT_DIR) == 0)
                         filp->f_pos++;
+                else
+                        return 0;
         }
         mutex_lock(&sysfs_mutex);
         for (pos = sysfs_dir_pos(ns, parent_sd, filp->f_pos, pos);
@@ -1058,10 +1062,21 @@ static int sysfs_readdir(struct file * filp, void * dirent, filldir_t filldir)
         return 0;
 }
 
+static loff_t sysfs_dir_llseek(struct file *file, loff_t offset, int whence)
+{
+        struct inode *inode = file_inode(file);
+        loff_t ret;
+
+        mutex_lock(&inode->i_mutex);
+        ret = generic_file_llseek(file, offset, whence);
+        mutex_unlock(&inode->i_mutex);
+
+        return ret;
+}
 
 const struct file_operations sysfs_dir_operations = {
         .read           = generic_read_dir,
         .readdir        = sysfs_readdir,
         .release        = sysfs_dir_release,
-        .llseek         = generic_file_llseek,
+        .llseek         = sysfs_dir_llseek,
 };
diff --git a/fs/sysfs/mount.c b/fs/sysfs/mount.c
index 8d924b5ec733..afd83273e6ce 100644
--- a/fs/sysfs/mount.c
+++ b/fs/sysfs/mount.c
@@ -19,6 +19,7 @@
 #include <linux/module.h>
 #include <linux/magic.h>
 #include <linux/slab.h>
+#include <linux/user_namespace.h>
 
 #include "sysfs.h"
 
@@ -111,6 +112,9 @@ static struct dentry *sysfs_mount(struct file_system_type *fs_type,
         struct super_block *sb;
         int error;
 
+        if (!(flags & MS_KERNMOUNT) && !current_user_ns()->may_mount_sysfs)
+                return ERR_PTR(-EPERM);
+
         info = kzalloc(sizeof(*info), GFP_KERNEL);
         if (!info)
                 return ERR_PTR(-ENOMEM);
diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c
index 4e8f0df82d02..8459b5d8cb71 100644
--- a/fs/xfs/xfs_buf.c
+++ b/fs/xfs/xfs_buf.c
@@ -1334,6 +1334,12 @@ _xfs_buf_ioapply(
         int             size;
         int             i;
 
+        /*
+         * Make sure we capture only current IO errors rather than stale errors
+         * left over from previous use of the buffer (e.g. failed readahead).
+         */
+        bp->b_error = 0;
+
         if (bp->b_flags & XBF_WRITE) {
                 if (bp->b_flags & XBF_SYNCIO)
                         rw = WRITE_SYNC;
diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
index 912d83d8860a..5a30dd899d2b 100644
--- a/fs/xfs/xfs_iomap.c
+++ b/fs/xfs/xfs_iomap.c
@@ -325,7 +325,7 @@ xfs_iomap_eof_want_preallocate(
  * rather than falling short due to things like stripe unit/width alignment of
  * real extents.
  */
-STATIC int
+STATIC xfs_fsblock_t
 xfs_iomap_eof_prealloc_initial_size(
         struct xfs_mount        *mp,
         struct xfs_inode        *ip,
@@ -413,7 +413,7 @@ xfs_iomap_prealloc_size(
                  * have a large file on a small filesystem and the above
                  * lowspace thresholds are smaller than MAXEXTLEN.
                  */
-                while (alloc_blocks >= freesp)
+                while (alloc_blocks && alloc_blocks >= freesp)
                         alloc_blocks >>= 4;
         }
 
diff --git a/include/drm/drm_pciids.h b/include/drm/drm_pciids.h
index a386b0b654cc..918e8fe2f5e9 100644
--- a/include/drm/drm_pciids.h
+++ b/include/drm/drm_pciids.h
@@ -581,7 +581,11 @@
         {0x1002, 0x9908, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \
         {0x1002, 0x9909, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \
         {0x1002, 0x990A, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \
-        {0x1002, 0x990F, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \
+        {0x1002, 0x990B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \
+        {0x1002, 0x990C, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \
+        {0x1002, 0x990D, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \
+        {0x1002, 0x990E, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \
+        {0x1002, 0x990F, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \
         {0x1002, 0x9910, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \
         {0x1002, 0x9913, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \
         {0x1002, 0x9917, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \
@@ -592,6 +596,13 @@
         {0x1002, 0x9992, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \
         {0x1002, 0x9993, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \
         {0x1002, 0x9994, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \
+        {0x1002, 0x9995, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \
+        {0x1002, 0x9996, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \
+        {0x1002, 0x9997, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \
+        {0x1002, 0x9998, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \
+        {0x1002, 0x9999, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \
+        {0x1002, 0x999A, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \
+        {0x1002, 0x999B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \
         {0x1002, 0x99A0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \
         {0x1002, 0x99A2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \
         {0x1002, 0x99A4, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \
diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h
index 350459910fe1..c3881553f7d1 100644
--- a/include/linux/backing-dev.h
+++ b/include/linux/backing-dev.h
@@ -18,6 +18,7 @@
 #include <linux/writeback.h>
 #include <linux/atomic.h>
 #include <linux/sysctl.h>
+#include <linux/workqueue.h>
 
 struct page;
 struct device;
@@ -27,7 +28,6 @@ struct dentry;
  * Bits in backing_dev_info.state
  */
 enum bdi_state {
-        BDI_pending,            /* On its way to being activated */
         BDI_wb_alloc,           /* Default embedded wb allocated */
         BDI_async_congested,    /* The async (write) queue is getting full */
         BDI_sync_congested,     /* The sync queue is getting full */
@@ -53,10 +53,8 @@ struct bdi_writeback {
         unsigned int nr;
 
         unsigned long last_old_flush;   /* last old data flush */
-        unsigned long last_active;      /* last time bdi thread was active */
 
-        struct task_struct *task;       /* writeback thread */
-        struct timer_list wakeup_timer; /* used for delayed bdi thread wakeup */
+        struct delayed_work dwork;      /* work item used for writeback */
         struct list_head b_dirty;       /* dirty inodes */
         struct list_head b_io;          /* parked for writeback */
         struct list_head b_more_io;     /* parked for more writeback */
@@ -123,14 +121,15 @@ int bdi_setup_and_register(struct backing_dev_info *, char *, unsigned int);
 void bdi_start_writeback(struct backing_dev_info *bdi, long nr_pages,
                         enum wb_reason reason);
 void bdi_start_background_writeback(struct backing_dev_info *bdi);
-int bdi_writeback_thread(void *data);
+void bdi_writeback_workfn(struct work_struct *work);
 int bdi_has_dirty_io(struct backing_dev_info *bdi);
 void bdi_wakeup_thread_delayed(struct backing_dev_info *bdi);
 void bdi_lock_two(struct bdi_writeback *wb1, struct bdi_writeback *wb2);
 
 extern spinlock_t bdi_lock;
 extern struct list_head bdi_list;
-extern struct list_head bdi_pending_list;
+
+extern struct workqueue_struct *bdi_wq;
 
 static inline int wb_has_dirty_io(struct bdi_writeback *wb)
 {
@@ -336,11 +335,6 @@ static inline bool bdi_cap_swap_backed(struct backing_dev_info *bdi)
         return bdi->capabilities & BDI_CAP_SWAP_BACKED;
 }
 
-static inline bool bdi_cap_flush_forker(struct backing_dev_info *bdi)
-{
-        return bdi == &default_backing_dev_info;
-}
-
 static inline bool mapping_cap_writeback_dirty(struct address_space *mapping)
 {
         return bdi_cap_writeback_dirty(mapping->backing_dev_info);
diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
index 032560295fcb..d08e4d2a9b92 100644
--- a/include/linux/cpumask.h
+++ b/include/linux/cpumask.h
@@ -591,6 +591,21 @@ static inline int cpulist_scnprintf(char *buf, int len,
 }
 
 /**
+ * cpumask_parse - extract a cpumask from from a string
+ * @buf: the buffer to extract from
+ * @dstp: the cpumask to set.
+ *
+ * Returns -errno, or 0 for success.
+ */
+static inline int cpumask_parse(const char *buf, struct cpumask *dstp)
+{
+        char *nl = strchr(buf, '\n');
+        int len = nl ? nl - buf : strlen(buf);
+
+        return bitmap_parse(buf, len, cpumask_bits(dstp), nr_cpumask_bits);
+}
+
+/**
  * cpulist_parse - extract a cpumask from a user string of ranges
  * @buf: the buffer to extract from
  * @dstp: the cpumask to set.
diff --git a/include/linux/debug_locks.h b/include/linux/debug_locks.h
index a975de1ff59f..3bd46f766751 100644
--- a/include/linux/debug_locks.h
+++ b/include/linux/debug_locks.h
@@ -51,7 +51,7 @@ struct task_struct;
 extern void debug_show_all_locks(void);
 extern void debug_show_held_locks(struct task_struct *task);
 extern void debug_check_no_locks_freed(const void *from, unsigned long len);
-extern void debug_check_no_locks_held(void);
+extern void debug_check_no_locks_held(struct task_struct *task);
 #else
 static inline void debug_show_all_locks(void)
 {
@@ -67,7 +67,7 @@ debug_check_no_locks_freed(const void *from, unsigned long len)
 }
 
 static inline void
-debug_check_no_locks_held(void)
+debug_check_no_locks_held(struct task_struct *task)
 {
 }
 #endif
diff --git a/include/linux/device.h b/include/linux/device.h
index 9d6464ea99c6..ee10d4e7be1a 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -302,6 +302,8 @@ void subsys_interface_unregister(struct subsys_interface *sif);
 
 int subsys_system_register(struct bus_type *subsys,
                            const struct attribute_group **groups);
+int subsys_virtual_register(struct bus_type *subsys,
+                            const struct attribute_group **groups);
 
 /**
  * struct class - device classes
diff --git a/include/linux/edac.h b/include/linux/edac.h
index 4fd4999ccb5b..0b763276f619 100644
--- a/include/linux/edac.h
+++ b/include/linux/edac.h
@@ -561,7 +561,6 @@ struct csrow_info {
 
         u32 ue_count;           /* Uncorrectable Errors for this csrow */
         u32 ce_count;           /* Correctable Errors for this csrow */
-        u32 nr_pages;           /* combined pages count of all channels */
 
         struct mem_ctl_info *mci;       /* the parent */
 
@@ -676,11 +675,11 @@ struct mem_ctl_info {
          * sees memory sticks ("dimms"), and the ones that sees memory ranks.
          * All old memory controllers enumerate memories per rank, but most
          * of the recent drivers enumerate memories per DIMM, instead.
-         * When the memory controller is per rank, mem_is_per_rank is true.
+         * When the memory controller is per rank, csbased is true.
          */
         unsigned n_layers;
         struct edac_mc_layer *layers;
-        bool mem_is_per_rank;
+        bool csbased;
 
         /*
          * DIMM info. Will eventually remove the entire csrows_info some day
@@ -741,8 +740,6 @@ struct mem_ctl_info {
         u32 fake_inject_ue;
         u16 fake_inject_count;
 #endif
-        __u8 csbased : 1,       /* csrow-based memory controller */
-             __resv  : 7;
 };
 
 #endif
diff --git a/include/linux/freezer.h b/include/linux/freezer.h
index 043a5cf8b5ba..e70df40d84f6 100644
--- a/include/linux/freezer.h
+++ b/include/linux/freezer.h
@@ -3,7 +3,6 @@
 #ifndef FREEZER_H_INCLUDED
 #define FREEZER_H_INCLUDED
 
-#include <linux/debug_locks.h>
 #include <linux/sched.h>
 #include <linux/wait.h>
 #include <linux/atomic.h>
@@ -49,8 +48,6 @@ extern void thaw_kernel_threads(void);
 
 static inline bool try_to_freeze(void)
 {
-        if (!(current->flags & PF_NOFREEZE))
-                debug_check_no_locks_held();
         might_sleep();
         if (likely(!freezing(current)))
                 return false;
diff --git a/include/linux/fs_struct.h b/include/linux/fs_struct.h
index 729eded4b24f..2b93a9a5a1e6 100644
--- a/include/linux/fs_struct.h
+++ b/include/linux/fs_struct.h
@@ -50,4 +50,6 @@ static inline void get_fs_root_and_pwd(struct fs_struct *fs, struct path *root,
         spin_unlock(&fs->lock);
 }
 
+extern bool current_chrooted(void);
+
 #endif /* _LINUX_FS_STRUCT_H */
diff --git a/include/linux/hash.h b/include/linux/hash.h
index 61c97ae22e01..f09a0ae4d858 100644
--- a/include/linux/hash.h
+++ b/include/linux/hash.h
@@ -15,6 +15,7 @@
  */
 
 #include <asm/types.h>
+#include <linux/compiler.h>
 
 /* 2^31 + 2^29 - 2^25 + 2^22 - 2^19 - 2^16 + 1 */
 #define GOLDEN_RATIO_PRIME_32 0x9e370001UL
@@ -31,7 +32,7 @@
 #error Wordsize not 32 or 64
 #endif
 
-static inline u64 hash_64(u64 val, unsigned int bits)
+static __always_inline u64 hash_64(u64 val, unsigned int bits)
 {
         u64 hash = val;
 
diff --git a/include/linux/irq_work.h b/include/linux/irq_work.h
index f5dbce50466e..66017028dcb3 100644
--- a/include/linux/irq_work.h
+++ b/include/linux/irq_work.h
@@ -37,7 +37,7 @@ void irq_work_sync(struct irq_work *work);
 #ifdef CONFIG_IRQ_WORK
 bool irq_work_needs_cpu(void);
 #else
-static bool irq_work_needs_cpu(void) { return false; }
+static inline bool irq_work_needs_cpu(void) { return false; }
 #endif
 
 #endif /* _LINUX_IRQ_WORK_H */
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 80d36874689b..79fdd80a42d4 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -390,7 +390,6 @@ extern struct pid *session_of_pgrp(struct pid *pgrp);
 unsigned long int_sqrt(unsigned long);
 
 extern void bust_spinlocks(int yes);
-extern void wake_up_klogd(void);
 extern int oops_in_progress;            /* If set, an oops, panic(), BUG() or die() is in progress */
 extern int panic_timeout;
 extern int panic_on_oops;
diff --git a/include/linux/mfd/max77693-private.h b/include/linux/mfd/max77693-private.h
index 5b18ecde69b5..1aa4f13cdfa6 100644
--- a/include/linux/mfd/max77693-private.h
+++ b/include/linux/mfd/max77693-private.h
@@ -106,6 +106,29 @@ enum max77693_muic_reg {
         MAX77693_MUIC_REG_END,
 };
 
+/* MAX77693 INTMASK1~2 Register */
+#define INTMASK1_ADC1K_SHIFT            3
+#define INTMASK1_ADCERR_SHIFT           2
+#define INTMASK1_ADCLOW_SHIFT           1
+#define INTMASK1_ADC_SHIFT              0
+#define INTMASK1_ADC1K_MASK             (1 << INTMASK1_ADC1K_SHIFT)
+#define INTMASK1_ADCERR_MASK            (1 << INTMASK1_ADCERR_SHIFT)
+#define INTMASK1_ADCLOW_MASK            (1 << INTMASK1_ADCLOW_SHIFT)
+#define INTMASK1_ADC_MASK               (1 << INTMASK1_ADC_SHIFT)
+
+#define INTMASK2_VIDRM_SHIFT            5
+#define INTMASK2_VBVOLT_SHIFT           4
+#define INTMASK2_DXOVP_SHIFT            3
+#define INTMASK2_DCDTMR_SHIFT           2
+#define INTMASK2_CHGDETRUN_SHIFT        1
+#define INTMASK2_CHGTYP_SHIFT           0
+#define INTMASK2_VIDRM_MASK             (1 << INTMASK2_VIDRM_SHIFT)
+#define INTMASK2_VBVOLT_MASK            (1 << INTMASK2_VBVOLT_SHIFT)
+#define INTMASK2_DXOVP_MASK             (1 << INTMASK2_DXOVP_SHIFT)
+#define INTMASK2_DCDTMR_MASK            (1 << INTMASK2_DCDTMR_SHIFT)
+#define INTMASK2_CHGDETRUN_MASK         (1 << INTMASK2_CHGDETRUN_SHIFT)
+#define INTMASK2_CHGTYP_MASK            (1 << INTMASK2_CHGTYP_SHIFT)
+
 /* MAX77693 MUIC - STATUS1~3 Register */
 #define STATUS1_ADC_SHIFT               (0)
 #define STATUS1_ADCLOW_SHIFT            (5)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 7acc9dc73c9f..e19ff30ad0a2 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -87,7 +87,6 @@ extern unsigned int kobjsize(const void *objp);
 #define VM_PFNMAP       0x00000400      /* Page-ranges managed without "struct page", just pure PFN */
 #define VM_DENYWRITE    0x00000800      /* ETXTBSY on write attempts.. */
 
-#define VM_POPULATE     0x00001000
 #define VM_LOCKED       0x00002000
 #define VM_IO           0x00004000      /* Memory mapped I/O or similar */
 
diff --git a/include/linux/mman.h b/include/linux/mman.h
index 61c7a87e5d2b..9aa863da287f 100644
--- a/include/linux/mman.h
+++ b/include/linux/mman.h
@@ -79,8 +79,6 @@ calc_vm_flag_bits(unsigned long flags)
 {
         return _calc_vm_trans(flags, MAP_GROWSDOWN,  VM_GROWSDOWN ) |
                _calc_vm_trans(flags, MAP_DENYWRITE,  VM_DENYWRITE ) |
-               ((flags & MAP_LOCKED) ? (VM_LOCKED | VM_POPULATE) : 0) |
-               (((flags & (MAP_POPULATE | MAP_NONBLOCK)) == MAP_POPULATE) ?
-                                                        VM_POPULATE : 0);
+               _calc_vm_trans(flags, MAP_LOCKED,     VM_LOCKED    );
 }
 #endif /* _LINUX_MMAN_H */
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index ede274957e05..c74092eebf5c 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -527,7 +527,7 @@ static inline int zone_is_oom_locked(const struct zone *zone)
         return test_bit(ZONE_OOM_LOCKED, &zone->flags);
 }
 
-static inline unsigned zone_end_pfn(const struct zone *zone)
+static inline unsigned long zone_end_pfn(const struct zone *zone)
 {
         return zone->zone_start_pfn + zone->spanned_pages;
 }
diff --git a/include/linux/mount.h b/include/linux/mount.h
index d7029f4a191a..73005f9957ea 100644
--- a/include/linux/mount.h
+++ b/include/linux/mount.h
@@ -47,6 +47,8 @@ struct mnt_namespace;
 
 #define MNT_INTERNAL    0x4000
 
+#define MNT_LOCK_READONLY       0x400000
+
 struct vfsmount {
         struct dentry *mnt_root;        /* root of the mounted tree */
         struct super_block *mnt_sb;     /* pointer to superblock */
diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 7ccb3c59ed60..ef52d9c91459 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -187,6 +187,13 @@ typedef enum {
  * This happens with the Renesas AG-AND chips, possibly others.
  */
 #define BBT_AUTO_REFRESH        0x00000080
+/*
+ * Chip requires ready check on read (for auto-incremented sequential read).
+ * True only for small page devices; large page devices do not support
+ * autoincrement.
+ */
+#define NAND_NEED_READRDY       0x00000100
+
 /* Chip does not allow subpage writes */
 #define NAND_NO_SUBPAGE_WRITE   0x00000200
 
diff --git a/include/linux/mxsfb.h b/include/linux/mxsfb.h
index f14943d55315..f80af8674342 100644
--- a/include/linux/mxsfb.h
+++ b/include/linux/mxsfb.h
@@ -24,8 +24,8 @@
 #define STMLCDIF_18BIT 2 /** pixel data bus to the display is of 18 bit width */
 #define STMLCDIF_24BIT 3 /** pixel data bus to the display is of 24 bit width */
 
-#define FB_SYNC_DATA_ENABLE_HIGH_ACT    (1 << 6)
-#define FB_SYNC_DOTCLK_FAILING_ACT      (1 << 7) /* failing/negtive edge sampling */
+#define MXSFB_SYNC_DATA_ENABLE_HIGH_ACT (1 << 6)
+#define MXSFB_SYNC_DOTCLK_FAILING_ACT   (1 << 7) /* failing/negtive edge sampling */
 
 struct mxsfb_platform_data {
         struct fb_videomode *mode_list;
@@ -44,6 +44,9 @@ struct mxsfb_platform_data {
                                  * allocated. If specified,fb_size must also be specified.
                                  * fb_phys must be unused by Linux.
                                  */
+        u32 sync;               /* sync mask, contains MXSFB specifics not
+                                 * carried in fb_info->var.sync
+                                 */
 };
 
 #endif /* __LINUX_MXSFB_H */
diff --git a/include/linux/nvme.h b/include/linux/nvme.h
index c25cccaa555a..4fa3b0b9b071 100644
--- a/include/linux/nvme.h
+++ b/include/linux/nvme.h
@@ -137,6 +137,34 @@ enum {
         NVME_LBAF_RP_DEGRADED   = 3,
 };
 
+struct nvme_smart_log {
+        __u8                    critical_warning;
+        __u8                    temperature[2];
+        __u8                    avail_spare;
+        __u8                    spare_thresh;
+        __u8                    percent_used;
+        __u8                    rsvd6[26];
+        __u8                    data_units_read[16];
+        __u8                    data_units_written[16];
+        __u8                    host_reads[16];
+        __u8                    host_writes[16];
+        __u8                    ctrl_busy_time[16];
+        __u8                    power_cycles[16];
+        __u8                    power_on_hours[16];
+        __u8                    unsafe_shutdowns[16];
+        __u8                    media_errors[16];
+        __u8                    num_err_log_entries[16];
+        __u8                    rsvd192[320];
+};
+
+enum {
+        NVME_SMART_CRIT_SPARE           = 1 << 0,
+        NVME_SMART_CRIT_TEMPERATURE     = 1 << 1,
+        NVME_SMART_CRIT_RELIABILITY     = 1 << 2,
+        NVME_SMART_CRIT_MEDIA           = 1 << 3,
+        NVME_SMART_CRIT_VOLATILE_MEMORY = 1 << 4,
+};
+
 struct nvme_lba_range_type {
         __u8                    type;
         __u8                    attributes;
diff --git a/include/linux/printk.h b/include/linux/printk.h
index 1249a54d17e0..822171fcb1c8 100644
--- a/include/linux/printk.h
+++ b/include/linux/printk.h
@@ -134,6 +134,8 @@ extern int printk_delay_msec;
 extern int dmesg_restrict;
 extern int kptr_restrict;
 
+extern void wake_up_klogd(void);
+
 void log_buf_kexec_setup(void);
 void __init setup_log_buf(int early);
 #else
@@ -162,6 +164,10 @@ static inline bool printk_timed_ratelimit(unsigned long *caller_jiffies,
         return false;
 }
 
+static inline void wake_up_klogd(void)
+{
+}
+
 static inline void log_buf_kexec_setup(void)
 {
 }
diff --git a/include/linux/sched.h b/include/linux/sched.h
index d35d2b6ddbfb..e5c64f7b8c1d 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1793,7 +1793,7 @@ extern void thread_group_cputime_adjusted(struct task_struct *p, cputime_t *ut,
 #define PF_SWAPWRITE    0x00800000      /* Allowed to write to swap */
 #define PF_SPREAD_PAGE  0x01000000      /* Spread page cache over cpuset */
 #define PF_SPREAD_SLAB  0x02000000      /* Spread some slab caches over cpuset */
-#define PF_THREAD_BOUND 0x04000000      /* Thread bound to specific cpu */
+#define PF_NO_SETAFFINITY 0x04000000    /* Userland is not allowed to meddle with cpus_allowed */
 #define PF_MCE_EARLY    0x08000000      /* Early kill for mce process policy */
 #define PF_MEMPOLICY    0x10000000      /* Non-default NUMA mempolicy */
 #define PF_MUTEX_TESTER 0x20000000      /* Thread belongs to the rt mutex tester */
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 821c7f45d2a7..441f5bfdab8e 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -500,7 +500,7 @@ struct sk_buff {
         union {
                 __u32           mark;
                 __u32           dropcount;
-                __u32           avail_size;
+                __u32           reserved_tailroom;
         };
 
         sk_buff_data_t          inner_transport_header;
@@ -1288,11 +1288,13 @@ static inline void __skb_fill_page_desc(struct sk_buff *skb, int i,
          * do not lose pfmemalloc information as the pages would not be
          * allocated using __GFP_MEMALLOC.
          */
-        if (page->pfmemalloc && !page->mapping)
-                skb->pfmemalloc = true;
         frag->page.p              = page;
         frag->page_offset         = off;
         skb_frag_size_set(frag, size);
+
+        page = compound_head(page);
+        if (page->pfmemalloc && !page->mapping)
+                skb->pfmemalloc = true;
 }
 
 /**
@@ -1447,7 +1449,10 @@ static inline int skb_tailroom(const struct sk_buff *skb)
  */
 static inline int skb_availroom(const struct sk_buff *skb)
 {
-        return skb_is_nonlinear(skb) ? 0 : skb->avail_size - skb->len;
+        if (skb_is_nonlinear(skb))
+                return 0;
+
+        return skb->end - skb->tail - skb->reserved_tailroom;
 }
 
 /**
diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index f0bd7f90a90d..e3c0ae9bb1fa 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -44,7 +44,7 @@
 /* Adding event notification support elements */
 #define THERMAL_GENL_FAMILY_NAME                "thermal_event"
 #define THERMAL_GENL_VERSION                    0x01
-#define THERMAL_GENL_MCAST_GROUP_NAME           "thermal_mc_group"
+#define THERMAL_GENL_MCAST_GROUP_NAME           "thermal_mc_grp"
 
 /* Default Thermal Governor */
 #if defined(CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE)
diff --git a/include/linux/udp.h b/include/linux/udp.h
index 9d81de123c90..42278bbf7a88 100644
--- a/include/linux/udp.h
+++ b/include/linux/udp.h
@@ -68,6 +68,7 @@ struct udp_sock {
          * For encapsulation sockets.
          */
         int (*encap_rcv)(struct sock *sk, struct sk_buff *skb);
+        void (*encap_destroy)(struct sock *sk);
 };
 
 static inline struct udp_sock *udp_sk(const struct sock *sk)
diff --git a/include/linux/usb/cdc_ncm.h b/include/linux/usb/cdc_ncm.h
index 3b8f9d4fc3fe..cc25b70af33c 100644
--- a/include/linux/usb/cdc_ncm.h
+++ b/include/linux/usb/cdc_ncm.h
@@ -127,6 +127,7 @@ struct cdc_ncm_ctx {
         u16 connected;
 };
 
+extern u8 cdc_ncm_select_altsetting(struct usbnet *dev, struct usb_interface *intf);
 extern int cdc_ncm_bind_common(struct usbnet *dev, struct usb_interface *intf, u8 data_altsetting);
 extern void cdc_ncm_unbind(struct usbnet *dev, struct usb_interface *intf);
 extern struct sk_buff *cdc_ncm_fill_tx_frame(struct cdc_ncm_ctx *ctx, struct sk_buff *skb, __le32 sign);
diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h
index 0a78df5f6cfd..59694b5e5e90 100644
--- a/include/linux/usb/hcd.h
+++ b/include/linux/usb/hcd.h
@@ -357,6 +357,7 @@ struct hc_driver {
                  */
         int     (*disable_usb3_lpm_timeout)(struct usb_hcd *,
                         struct usb_device *, enum usb3_link_state state);
+        int     (*find_raw_port_number)(struct usb_hcd *, int);
 };
 
 extern int usb_hcd_link_urb_to_ep(struct usb_hcd *hcd, struct urb *urb);
@@ -396,6 +397,7 @@ extern int usb_hcd_is_primary_hcd(struct usb_hcd *hcd);
 extern int usb_add_hcd(struct usb_hcd *hcd,
                 unsigned int irqnum, unsigned long irqflags);
 extern void usb_remove_hcd(struct usb_hcd *hcd);
+extern int usb_hcd_find_raw_port_number(struct usb_hcd *hcd, int port1);
 
 struct platform_device;
 extern void usb_hcd_platform_shutdown(struct platform_device *dev);
diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h
index ef9be7e1e190..1819b59aab2a 100644
--- a/include/linux/usb/serial.h
+++ b/include/linux/usb/serial.h
@@ -66,6 +66,7 @@
  *      port.
  * @flags: usb serial port flags
  * @write_wait: a wait_queue_head_t used by the port.
+ * @delta_msr_wait: modem-status-change wait queue
  * @work: work queue entry for the line discipline waking up.
  * @throttled: nonzero if the read urb is inactive to throttle the device
  * @throttle_req: nonzero if the tty wants to throttle us
@@ -112,6 +113,7 @@ struct usb_serial_port {
 
         unsigned long           flags;
         wait_queue_head_t       write_wait;
+        wait_queue_head_t       delta_msr_wait;
         struct work_struct      work;
         char                    throttled;
         char                    throttle_req;
diff --git a/include/linux/usb/ulpi.h b/include/linux/usb/ulpi.h
index 6f033a415ecb..5c295c26ad37 100644
--- a/include/linux/usb/ulpi.h
+++ b/include/linux/usb/ulpi.h
@@ -181,8 +181,16 @@
 
 /*-------------------------------------------------------------------------*/
 
+#if IS_ENABLED(CONFIG_USB_ULPI)
 struct usb_phy *otg_ulpi_create(struct usb_phy_io_ops *ops,
                                         unsigned int flags);
+#else
+static inline struct usb_phy *otg_ulpi_create(struct usb_phy_io_ops *ops,
+                                              unsigned int flags)
+{
+        return NULL;
+}
+#endif
 
 #ifdef CONFIG_USB_ULPI_VIEWPORT
 /* access ops for controllers with a viewport register */
diff --git a/include/linux/user_namespace.h b/include/linux/user_namespace.h
index 4ce009324933..b6b215f13b45 100644
--- a/include/linux/user_namespace.h
+++ b/include/linux/user_namespace.h
@@ -26,6 +26,8 @@ struct user_namespace {
         kuid_t                  owner;
         kgid_t                  group;
         unsigned int            proc_inum;
+        bool                    may_mount_sysfs;
+        bool                    may_mount_proc;
 };
 
 extern struct user_namespace init_user_ns;
@@ -82,4 +84,6 @@ static inline void put_user_ns(struct user_namespace *ns)
 
 #endif
 
+void update_mnt_policy(struct user_namespace *userns);
+
 #endif /* _LINUX_USER_H */
diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h
index 8afab27cdbc2..717975639378 100644
--- a/include/linux/workqueue.h
+++ b/include/linux/workqueue.h
@@ -11,6 +11,7 @@
 #include <linux/lockdep.h>
 #include <linux/threads.h>
 #include <linux/atomic.h>
+#include <linux/cpumask.h>
 
 struct workqueue_struct;
 
@@ -68,7 +69,7 @@ enum {
                                   WORK_STRUCT_COLOR_BITS,
 
         /* data contains off-queue information when !WORK_STRUCT_PWQ */
-        WORK_OFFQ_FLAG_BASE     = WORK_STRUCT_FLAG_BITS,
+        WORK_OFFQ_FLAG_BASE     = WORK_STRUCT_COLOR_SHIFT,
 
         WORK_OFFQ_CANCELING     = (1 << WORK_OFFQ_FLAG_BASE),
 
@@ -115,6 +116,20 @@ struct delayed_work {
         int cpu;
 };
 
+/*
+ * A struct for workqueue attributes.  This can be used to change
+ * attributes of an unbound workqueue.
+ *
+ * Unlike other fields, ->no_numa isn't a property of a worker_pool.  It
+ * only modifies how apply_workqueue_attrs() select pools and thus doesn't
+ * participate in pool hash calculations or equality comparisons.
+ */
+struct workqueue_attrs {
+        int                     nice;           /* nice level */
+        cpumask_var_t           cpumask;        /* allowed CPUs */
+        bool                    no_numa;        /* disable NUMA affinity */
+};
+
 static inline struct delayed_work *to_delayed_work(struct work_struct *work)
 {
         return container_of(work, struct delayed_work, work);
@@ -283,9 +298,10 @@ enum {
         WQ_MEM_RECLAIM          = 1 << 3, /* may be used for memory reclaim */
         WQ_HIGHPRI              = 1 << 4, /* high priority */
         WQ_CPU_INTENSIVE        = 1 << 5, /* cpu instensive workqueue */
+        WQ_SYSFS                = 1 << 6, /* visible in sysfs, see wq_sysfs_register() */
 
-        WQ_DRAINING             = 1 << 6, /* internal: workqueue is draining */
-        WQ_RESCUER              = 1 << 7, /* internal: workqueue has rescuer */
+        __WQ_DRAINING           = 1 << 16, /* internal: workqueue is draining */
+        __WQ_ORDERED            = 1 << 17, /* internal: workqueue is ordered */
 
         WQ_MAX_ACTIVE           = 512,    /* I like 512, better ideas? */
         WQ_MAX_UNBOUND_PER_CPU  = 4,      /* 4 * #cpus for unbound wq */
@@ -388,7 +404,7 @@ __alloc_workqueue_key(const char *fmt, unsigned int flags, int max_active,
  * Pointer to the allocated workqueue on success, %NULL on failure.
  */
 #define alloc_ordered_workqueue(fmt, flags, args...)                    \
-        alloc_workqueue(fmt, WQ_UNBOUND | (flags), 1, ##args)
+        alloc_workqueue(fmt, WQ_UNBOUND | __WQ_ORDERED | (flags), 1, ##args)
 
 #define create_workqueue(name)                                          \
         alloc_workqueue((name), WQ_MEM_RECLAIM, 1)
@@ -399,30 +415,23 @@ __alloc_workqueue_key(const char *fmt, unsigned int flags, int max_active,
 
 extern void destroy_workqueue(struct workqueue_struct *wq);
 
+struct workqueue_attrs *alloc_workqueue_attrs(gfp_t gfp_mask);
+void free_workqueue_attrs(struct workqueue_attrs *attrs);
+int apply_workqueue_attrs(struct workqueue_struct *wq,
+                          const struct workqueue_attrs *attrs);
+
 extern bool queue_work_on(int cpu, struct workqueue_struct *wq,
                         struct work_struct *work);
-extern bool queue_work(struct workqueue_struct *wq, struct work_struct *work);
 extern bool queue_delayed_work_on(int cpu, struct workqueue_struct *wq,
                         struct delayed_work *work, unsigned long delay);
-extern bool queue_delayed_work(struct workqueue_struct *wq,
-                        struct delayed_work *work, unsigned long delay);
 extern bool mod_delayed_work_on(int cpu, struct workqueue_struct *wq,
                         struct delayed_work *dwork, unsigned long delay);
-extern bool mod_delayed_work(struct workqueue_struct *wq,
-                        struct delayed_work *dwork, unsigned long delay);
 
 extern void flush_workqueue(struct workqueue_struct *wq);
 extern void drain_workqueue(struct workqueue_struct *wq);
 extern void flush_scheduled_work(void);
 
-extern bool schedule_work_on(int cpu, struct work_struct *work);
-extern bool schedule_work(struct work_struct *work);
-extern bool schedule_delayed_work_on(int cpu, struct delayed_work *work,
-                                     unsigned long delay);
-extern bool schedule_delayed_work(struct delayed_work *work,
-                                  unsigned long delay);
 extern int schedule_on_each_cpu(work_func_t func);
-extern int keventd_up(void);
 
 int execute_in_process_context(work_func_t fn, struct execute_work *);
 
@@ -435,9 +444,121 @@ extern bool cancel_delayed_work_sync(struct delayed_work *dwork);
 
 extern void workqueue_set_max_active(struct workqueue_struct *wq,
                                      int max_active);
-extern bool workqueue_congested(unsigned int cpu, struct workqueue_struct *wq);
+extern bool current_is_workqueue_rescuer(void);
+extern bool workqueue_congested(int cpu, struct workqueue_struct *wq);
 extern unsigned int work_busy(struct work_struct *work);
 
+/**
+ * queue_work - queue work on a workqueue
+ * @wq: workqueue to use
+ * @work: work to queue
+ *
+ * Returns %false if @work was already on a queue, %true otherwise.
+ *
+ * We queue the work to the CPU on which it was submitted, but if the CPU dies
+ * it can be processed by another CPU.
+ */
+static inline bool queue_work(struct workqueue_struct *wq,
+                              struct work_struct *work)
+{
+        return queue_work_on(WORK_CPU_UNBOUND, wq, work);
+}
+
+/**
+ * queue_delayed_work - queue work on a workqueue after delay
+ * @wq: workqueue to use
+ * @dwork: delayable work to queue
+ * @delay: number of jiffies to wait before queueing
+ *
+ * Equivalent to queue_delayed_work_on() but tries to use the local CPU.
+ */
+static inline bool queue_delayed_work(struct workqueue_struct *wq,
+                                      struct delayed_work *dwork,
+                                      unsigned long delay)
+{
+        return queue_delayed_work_on(WORK_CPU_UNBOUND, wq, dwork, delay);
+}
+
+/**
+ * mod_delayed_work - modify delay of or queue a delayed work
+ * @wq: workqueue to use
+ * @dwork: work to queue
+ * @delay: number of jiffies to wait before queueing
+ *
+ * mod_delayed_work_on() on local CPU.
+ */
+static inline bool mod_delayed_work(struct workqueue_struct *wq,
+                                    struct delayed_work *dwork,
+                                    unsigned long delay)
+{
+        return mod_delayed_work_on(WORK_CPU_UNBOUND, wq, dwork, delay);
+}
+
+/**
+ * schedule_work_on - put work task on a specific cpu
+ * @cpu: cpu to put the work task on
+ * @work: job to be done
+ *
+ * This puts a job on a specific cpu
+ */
+static inline bool schedule_work_on(int cpu, struct work_struct *work)
+{
+        return queue_work_on(cpu, system_wq, work);
+}
+
+/**
+ * schedule_work - put work task in global workqueue
+ * @work: job to be done
+ *
+ * Returns %false if @work was already on the kernel-global workqueue and
+ * %true otherwise.
+ *
+ * This puts a job in the kernel-global workqueue if it was not already
+ * queued and leaves it in the same position on the kernel-global
+ * workqueue otherwise.
+ */
+static inline bool schedule_work(struct work_struct *work)
+{
+        return queue_work(system_wq, work);
+}
+
+/**
+ * schedule_delayed_work_on - queue work in global workqueue on CPU after delay
+ * @cpu: cpu to use
+ * @dwork: job to be done
+ * @delay: number of jiffies to wait
+ *
+ * After waiting for a given time this puts a job in the kernel-global
+ * workqueue on the specified CPU.
+ */
+static inline bool schedule_delayed_work_on(int cpu, struct delayed_work *dwork,
+                                            unsigned long delay)
+{
+        return queue_delayed_work_on(cpu, system_wq, dwork, delay);
+}
+
+/**
+ * schedule_delayed_work - put work task in global workqueue after delay
+ * @dwork: job to be done
+ * @delay: number of jiffies to wait or 0 for immediate execution
+ *
+ * After waiting for a given time this puts a job in the kernel-global
+ * workqueue.
+ */
+static inline bool schedule_delayed_work(struct delayed_work *dwork,
+                                         unsigned long delay)
+{
+        return queue_delayed_work(system_wq, dwork, delay);
+}
+
+/**
+ * keventd_up - is workqueue initialized yet?
+ */
+static inline bool keventd_up(void)
+{
+        return system_wq != NULL;
+}
+
 /*
  * Like above, but uses del_timer() instead of del_timer_sync(). This means,
  * if it returns 0 the timer function may be running and the queueing is in
@@ -466,12 +587,12 @@ static inline bool __deprecated flush_delayed_work_sync(struct delayed_work *dwo
 }
 
 #ifndef CONFIG_SMP
-static inline long work_on_cpu(unsigned int cpu, long (*fn)(void *), void *arg)
+static inline long work_on_cpu(int cpu, long (*fn)(void *), void *arg)
 {
         return fn(arg);
 }
 #else
-long work_on_cpu(unsigned int cpu, long (*fn)(void *), void *arg);
+long work_on_cpu(int cpu, long (*fn)(void *), void *arg);
 #endif /* CONFIG_SMP */
 
 #ifdef CONFIG_FREEZER
@@ -480,4 +601,11 @@ extern bool freeze_workqueues_busy(void);
 extern void thaw_workqueues(void);
 #endif /* CONFIG_FREEZER */
 
+#ifdef CONFIG_SYSFS
+int workqueue_sysfs_register(struct workqueue_struct *wq);
+#else   /* CONFIG_SYSFS */
+static inline int workqueue_sysfs_register(struct workqueue_struct *wq)
+{ return 0; }
+#endif  /* CONFIG_SYSFS */
+
 #endif
diff --git a/include/net/dst.h b/include/net/dst.h
index 853cda11e518..1f8fd109e225 100644
--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -413,13 +413,15 @@ static inline int dst_neigh_output(struct dst_entry *dst, struct neighbour *n,
 
 static inline struct neighbour *dst_neigh_lookup(const struct dst_entry *dst, const void *daddr)
 {
-        return dst->ops->neigh_lookup(dst, NULL, daddr);
+        struct neighbour *n = dst->ops->neigh_lookup(dst, NULL, daddr);
+        return IS_ERR(n) ? NULL : n;
 }
 
 static inline struct neighbour *dst_neigh_lookup_skb(const struct dst_entry *dst,
                                                      struct sk_buff *skb)
 {
-        return dst->ops->neigh_lookup(dst, skb, NULL);
+        struct neighbour *n =  dst->ops->neigh_lookup(dst, skb, NULL);
+        return IS_ERR(n) ? NULL : n;
 }
 
 static inline void dst_link_failure(struct sk_buff *skb)
diff --git a/include/net/flow_keys.h b/include/net/flow_keys.h
index 80461c1ae9ef..bb8271d487b7 100644
--- a/include/net/flow_keys.h
+++ b/include/net/flow_keys.h
@@ -9,6 +9,7 @@ struct flow_keys {
                 __be32 ports;
                 __be16 port16[2];
         };
+        u16 thoff;
         u8 ip_proto;
 };
 
diff --git a/include/net/inet_frag.h b/include/net/inet_frag.h
index 76c3fe5ecc2e..0a1dcc2fa2f5 100644
--- a/include/net/inet_frag.h
+++ b/include/net/inet_frag.h
@@ -43,6 +43,13 @@ struct inet_frag_queue {
 
 #define INETFRAGS_HASHSZ                64
 
+/* averaged:
+ * max_depth = default ipfrag_high_thresh / INETFRAGS_HASHSZ /
+ *             rounded up (SKB_TRUELEN(0) + sizeof(struct ipq or
+ *             struct frag_queue))
+ */
+#define INETFRAGS_MAXDEPTH              128
+
 struct inet_frags {
         struct hlist_head       hash[INETFRAGS_HASHSZ];
         /* This rwlock is a global lock (seperate per IPv4, IPv6 and
@@ -76,6 +83,8 @@ int inet_frag_evictor(struct netns_frags *nf, struct inet_frags *f, bool force);
 struct inet_frag_queue *inet_frag_find(struct netns_frags *nf,
                 struct inet_frags *f, void *key, unsigned int hash)
         __releases(&f->lock);
+void inet_frag_maybe_warn_overflow(struct inet_frag_queue *q,
+                                   const char *prefix);
 
 static inline void inet_frag_put(struct inet_frag_queue *q, struct inet_frags *f)
 {
diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h
index 9497be1ad4c0..e49db91593a9 100644
--- a/include/net/ip_fib.h
+++ b/include/net/ip_fib.h
@@ -152,18 +152,16 @@ struct fib_result_nl {
 };
 
 #ifdef CONFIG_IP_ROUTE_MULTIPATH
-
 #define FIB_RES_NH(res)         ((res).fi->fib_nh[(res).nh_sel])
-
-#define FIB_TABLE_HASHSZ 2
-
 #else /* CONFIG_IP_ROUTE_MULTIPATH */
-
 #define FIB_RES_NH(res)         ((res).fi->fib_nh[0])
+#endif /* CONFIG_IP_ROUTE_MULTIPATH */
 
+#ifdef CONFIG_IP_MULTIPLE_TABLES
 #define FIB_TABLE_HASHSZ 256
-
-#endif /* CONFIG_IP_ROUTE_MULTIPATH */
+#else
+#define FIB_TABLE_HASHSZ 2
+#endif
 
 extern __be32 fib_info_update_nh_saddr(struct net *net, struct fib_nh *nh);
 
diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index 68c69d54d392..fce8e6b66d55 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -976,6 +976,7 @@ struct netns_ipvs {
         int                     sysctl_sync_retries;
         int                     sysctl_nat_icmp_send;
         int                     sysctl_pmtu_disc;
+        int                     sysctl_backup_only;
 
         /* ip_vs_lblc */
         int                     sysctl_lblc_expiration;
@@ -1067,6 +1068,12 @@ static inline int sysctl_pmtu_disc(struct netns_ipvs *ipvs)
         return ipvs->sysctl_pmtu_disc;
 }
 
+static inline int sysctl_backup_only(struct netns_ipvs *ipvs)
+{
+        return ipvs->sync_state & IP_VS_STATE_BACKUP &&
+               ipvs->sysctl_backup_only;
+}
+
 #else
 
 static inline int sysctl_sync_threshold(struct netns_ipvs *ipvs)
@@ -1114,6 +1121,11 @@ static inline int sysctl_pmtu_disc(struct netns_ipvs *ipvs)
         return 1;
 }
 
+static inline int sysctl_backup_only(struct netns_ipvs *ipvs)
+{
+        return 0;
+}
+
 #endif
 
 /*
diff --git a/include/net/ipip.h b/include/net/ipip.h
index fd19625ff99d..982141c15200 100644
--- a/include/net/ipip.h
+++ b/include/net/ipip.h
@@ -77,15 +77,11 @@ static inline void tunnel_ip_select_ident(struct sk_buff *skb,
 {
         struct iphdr *iph = ip_hdr(skb);
 
-        if (iph->frag_off & htons(IP_DF))
-                iph->id = 0;
-        else {
-                /* Use inner packet iph-id if possible. */
-                if (skb->protocol == htons(ETH_P_IP) && old_iph->id)
-                        iph->id = old_iph->id;
-                else
-                        __ip_select_ident(iph, dst,
-                                          (skb_shinfo(skb)->gso_segs ?: 1) - 1);
-        }
+        /* Use inner packet iph-id if possible. */
+        if (skb->protocol == htons(ETH_P_IP) && old_iph->id)
+                iph->id = old_iph->id;
+        else
+                __ip_select_ident(iph, dst,
+                                  (skb_shinfo(skb)->gso_segs ?: 1) - 1);
 }
 #endif
diff --git a/include/trace/events/writeback.h b/include/trace/events/writeback.h
index 6a16fd2e70ed..464ea82e10db 100644
--- a/include/trace/events/writeback.h
+++ b/include/trace/events/writeback.h
@@ -183,7 +183,6 @@ DECLARE_EVENT_CLASS(writeback_work_class,
 DEFINE_EVENT(writeback_work_class, name, \
         TP_PROTO(struct backing_dev_info *bdi, struct wb_writeback_work *work), \
         TP_ARGS(bdi, work))
-DEFINE_WRITEBACK_WORK_EVENT(writeback_nothread);
 DEFINE_WRITEBACK_WORK_EVENT(writeback_queue);
 DEFINE_WRITEBACK_WORK_EVENT(writeback_exec);
 DEFINE_WRITEBACK_WORK_EVENT(writeback_start);
@@ -222,12 +221,8 @@ DEFINE_EVENT(writeback_class, name, \
 
 DEFINE_WRITEBACK_EVENT(writeback_nowork);
 DEFINE_WRITEBACK_EVENT(writeback_wake_background);
-DEFINE_WRITEBACK_EVENT(writeback_wake_thread);
-DEFINE_WRITEBACK_EVENT(writeback_wake_forker_thread);
 DEFINE_WRITEBACK_EVENT(writeback_bdi_register);
 DEFINE_WRITEBACK_EVENT(writeback_bdi_unregister);
-DEFINE_WRITEBACK_EVENT(writeback_thread_start);
-DEFINE_WRITEBACK_EVENT(writeback_thread_stop);
 
 DECLARE_EVENT_CLASS(wbc_class,
         TP_PROTO(struct writeback_control *wbc, struct backing_dev_info *bdi),
diff --git a/include/uapi/linux/packet_diag.h b/include/uapi/linux/packet_diag.h
index 93f5fa94a431..afafd703ad92 100644
--- a/include/uapi/linux/packet_diag.h
+++ b/include/uapi/linux/packet_diag.h
@@ -33,9 +33,11 @@ enum {
         PACKET_DIAG_TX_RING,
         PACKET_DIAG_FANOUT,
 
-        PACKET_DIAG_MAX,
+        __PACKET_DIAG_MAX,
 };
 
+#define PACKET_DIAG_MAX (__PACKET_DIAG_MAX - 1)
+
 struct packet_diag_info {
         __u32   pdi_index;
         __u32   pdi_version;
diff --git a/include/uapi/linux/unix_diag.h b/include/uapi/linux/unix_diag.h
index b8a24941db21..b9e2a6a7446f 100644
--- a/include/uapi/linux/unix_diag.h
+++ b/include/uapi/linux/unix_diag.h
@@ -39,9 +39,11 @@ enum {
         UNIX_DIAG_MEMINFO,
         UNIX_DIAG_SHUTDOWN,
 
-        UNIX_DIAG_MAX,
+        __UNIX_DIAG_MAX,
 };
 
+#define UNIX_DIAG_MAX (__UNIX_DIAG_MAX - 1)
+
 struct unix_diag_vfs {
         __u32   udiag_vfs_ino;
         __u32   udiag_vfs_dev;
diff --git a/include/video/atmel_lcdc.h b/include/video/atmel_lcdc.h
index 28447f1594fa..8deb22672ada 100644
--- a/include/video/atmel_lcdc.h
+++ b/include/video/atmel_lcdc.h
@@ -30,7 +30,6 @@
  */
 #define ATMEL_LCDC_WIRING_BGR   0
 #define ATMEL_LCDC_WIRING_RGB   1
-#define ATMEL_LCDC_WIRING_RGB555        2
 
 
  /* LCD Controller info data structure, stored in device platform_data */
@@ -62,6 +61,7 @@ struct atmel_lcdfb_info {
         void (*atmel_lcdfb_power_control)(int on);
         struct fb_monspecs      *default_monspecs;
         u32                     pseudo_palette[16];
+        bool                    have_intensity_bit;
 };
 
 #define ATMEL_LCDC_DMABADDR1    0x00
diff --git a/include/xen/interface/io/blkif.h b/include/xen/interface/io/blkif.h
index 01c3d62436ef..ffd4652de91c 100644
--- a/include/xen/interface/io/blkif.h
+++ b/include/xen/interface/io/blkif.h
@@ -138,11 +138,21 @@ struct blkif_request_discard {
         uint8_t        _pad3;
 } __attribute__((__packed__));
 
+struct blkif_request_other {
+        uint8_t      _pad1;
+        blkif_vdev_t _pad2;        /* only for read/write requests         */
+#ifdef CONFIG_X86_64
+        uint32_t     _pad3;        /* offsetof(blkif_req..,u.other.id)==8*/
+#endif
+        uint64_t     id;           /* private guest value, echoed in resp  */
+} __attribute__((__packed__));
+
 struct blkif_request {
         uint8_t        operation;    /* BLKIF_OP_???                         */
         union {
                 struct blkif_request_rw rw;
                 struct blkif_request_discard discard;
+                struct blkif_request_other other;
         } u;
 } __attribute__((__packed__));
 
diff --git a/include/xen/interface/physdev.h b/include/xen/interface/physdev.h
index 1844d31f4552..7000bb1f6e96 100644
--- a/include/xen/interface/physdev.h
+++ b/include/xen/interface/physdev.h
@@ -251,6 +251,12 @@ struct physdev_pci_device_add {
 
 #define PHYSDEVOP_pci_device_remove     26
 #define PHYSDEVOP_restore_msi_ext       27
+/*
+ * Dom0 should use these two to announce MMIO resources assigned to
+ * MSI-X capable devices won't (prepare) or may (release) change.
+ */
+#define PHYSDEVOP_prepare_msix          30
+#define PHYSDEVOP_release_msix          31
 struct physdev_pci_device {
     /* IN */
     uint16_t seg;
diff --git a/ipc/mqueue.c b/ipc/mqueue.c
index e5c4f609f22c..e4e47f647446 100644
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -330,8 +330,16 @@ static struct dentry *mqueue_mount(struct file_system_type *fs_type,
                          int flags, const char *dev_name,
                          void *data)
 {
-        if (!(flags & MS_KERNMOUNT))
-                data = current->nsproxy->ipc_ns;
+        if (!(flags & MS_KERNMOUNT)) {
+                struct ipc_namespace *ns = current->nsproxy->ipc_ns;
+                /* Don't allow mounting unless the caller has CAP_SYS_ADMIN
+                 * over the ipc namespace.
+                 */
+                if (!ns_capable(ns->user_ns, CAP_SYS_ADMIN))
+                        return ERR_PTR(-EPERM);
+
+                data = ns;
+        }
         return mount_ns(fs_type, flags, data, mqueue_fill_super);
 }
 
@@ -840,7 +848,8 @@ out_putfd:
                 fd = error;
         }
         mutex_unlock(&root->d_inode->i_mutex);
-        mnt_drop_write(mnt);
+        if (!ro)
+                mnt_drop_write(mnt);
 out_putname:
         putname(name);
         return fd;
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index a32f9432666c..3852d926322c 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -2224,11 +2224,11 @@ retry_find_task:
                 tsk = tsk->group_leader;
 
         /*
-         * Workqueue threads may acquire PF_THREAD_BOUND and become
+         * Workqueue threads may acquire PF_NO_SETAFFINITY and become
          * trapped in a cpuset, or RT worker may be born in a cgroup
          * with no rt_runtime allocated.  Just say no.
          */
-        if (tsk == kthreadd_task || (tsk->flags & PF_THREAD_BOUND)) {
+        if (tsk == kthreadd_task || (tsk->flags & PF_NO_SETAFFINITY)) {
                 ret = -EINVAL;
                 rcu_read_unlock();
                 goto out_unlock_cgroup;
diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index 4f9dfe43ecbd..f22e94792707 100644
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -1388,16 +1388,16 @@ static int cpuset_can_attach(struct cgroup *cgrp, struct cgroup_taskset *tset)
 
         cgroup_taskset_for_each(task, cgrp, tset) {
                 /*
-                 * Kthreads bound to specific cpus cannot be moved to a new
-                 * cpuset; we cannot change their cpu affinity and
-                 * isolating such threads by their set of allowed nodes is
-                 * unnecessary.  Thus, cpusets are not applicable for such
-                 * threads.  This prevents checking for success of
-                 * set_cpus_allowed_ptr() on all attached tasks before
-                 * cpus_allowed may be changed.
+                 * Kthreads which disallow setaffinity shouldn't be moved
+                 * to a new cpuset; we don't want to change their cpu
+                 * affinity and isolating such threads by their set of
+                 * allowed nodes is unnecessary.  Thus, cpusets are not
+                 * applicable for such threads.  This prevents checking for
+                 * success of set_cpus_allowed_ptr() on all attached tasks
+                 * before cpus_allowed may be changed.
                  */
                 ret = -EINVAL;
-                if (task->flags & PF_THREAD_BOUND)
+                if (task->flags & PF_NO_SETAFFINITY)
                         goto out_unlock;
                 ret = security_task_setscheduler(task);
                 if (ret)
diff --git a/kernel/events/core.c b/kernel/events/core.c
index b0cd86501c30..59412d037eed 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -4434,12 +4434,15 @@ static void perf_event_task_event(struct perf_task_event *task_event)
                         if (ctxn < 0)
                                 goto next;
                         ctx = rcu_dereference(current->perf_event_ctxp[ctxn]);
+                        if (ctx)
+                                perf_event_task_ctx(ctx, task_event);
                 }
-                if (ctx)
-                        perf_event_task_ctx(ctx, task_event);
 next:
                 put_cpu_ptr(pmu->pmu_cpu_context);
         }
+        if (task_event->task_ctx)
+                perf_event_task_ctx(task_event->task_ctx, task_event);
+
         rcu_read_unlock();
 }
 
@@ -5647,6 +5650,7 @@ static void perf_swevent_init_hrtimer(struct perf_event *event)
                 event->attr.sample_period = NSEC_PER_SEC / freq;
                 hwc->sample_period = event->attr.sample_period;
                 local64_set(&hwc->period_left, hwc->sample_period);
+                hwc->last_period = hwc->sample_period;
                 event->attr.freq = 0;
         }
 }
diff --git a/kernel/exit.c b/kernel/exit.c
index 51e485ca9935..60bc027c61c3 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -835,7 +835,7 @@ void do_exit(long code)
         /*
          * Make sure we are holding no locks:
          */
-        debug_check_no_locks_held();
+        debug_check_no_locks_held(tsk);
         /*
          * We can do this unlocked here. The futex code uses this flag
          * just to verify whether the pi state cleanup has been done
diff --git a/kernel/kthread.c b/kernel/kthread.c
index 691dc2ef9baf..a2fbbb782bad 100644
--- a/kernel/kthread.c
+++ b/kernel/kthread.c
@@ -260,7 +260,7 @@ static void __kthread_bind(struct task_struct *p, unsigned int cpu)
 {
         /* It's safe because the task is inactive. */
         do_set_cpus_allowed(p, cpumask_of(cpu));
-        p->flags |= PF_THREAD_BOUND;
+        p->flags |= PF_NO_SETAFFINITY;
 }
 
 /**
diff --git a/kernel/lockdep.c b/kernel/lockdep.c
index 259db207b5d9..8a0efac4f99d 100644
--- a/kernel/lockdep.c
+++ b/kernel/lockdep.c
@@ -4088,7 +4088,7 @@ void debug_check_no_locks_freed(const void *mem_from, unsigned long mem_len)
 }
 EXPORT_SYMBOL_GPL(debug_check_no_locks_freed);
 
-static void print_held_locks_bug(void)
+static void print_held_locks_bug(struct task_struct *curr)
 {
         if (!debug_locks_off())
                 return;
@@ -4097,21 +4097,22 @@ static void print_held_locks_bug(void)
 
         printk("\n");
         printk("=====================================\n");
-        printk("[ BUG: %s/%d still has locks held! ]\n",
-               current->comm, task_pid_nr(current));
+        printk("[ BUG: lock held at task exit time! ]\n");
         print_kernel_ident();
         printk("-------------------------------------\n");
-        lockdep_print_held_locks(current);
+        printk("%s/%d is exiting with locks still held!\n",
+                curr->comm, task_pid_nr(curr));
+        lockdep_print_held_locks(curr);
+
         printk("\nstack backtrace:\n");
         dump_stack();
 }
 
-void debug_check_no_locks_held(void)
+void debug_check_no_locks_held(struct task_struct *task)
 {
-        if (unlikely(current->lockdep_depth > 0))
-                print_held_locks_bug();
+        if (unlikely(task->lockdep_depth > 0))
+                print_held_locks_bug(task);
 }
-EXPORT_SYMBOL_GPL(debug_check_no_locks_held);
 
 void debug_show_all_locks(void)
 {
diff --git a/kernel/pid_namespace.c b/kernel/pid_namespace.c
index c1c3dc1c6023..bea15bdf82b0 100644
--- a/kernel/pid_namespace.c
+++ b/kernel/pid_namespace.c
@@ -181,6 +181,7 @@ void zap_pid_ns_processes(struct pid_namespace *pid_ns)
         int nr;
         int rc;
         struct task_struct *task, *me = current;
+        int init_pids = thread_group_leader(me) ? 1 : 2;
 
         /* Don't allow any more processes into the pid namespace */
         disable_pid_allocation(pid_ns);
@@ -230,7 +231,7 @@ void zap_pid_ns_processes(struct pid_namespace *pid_ns)
          */
         for (;;) {
                 set_current_state(TASK_UNINTERRUPTIBLE);
-                if (pid_ns->nr_hashed == 1)
+                if (pid_ns->nr_hashed == init_pids)
                         break;
                 schedule();
         }
diff --git a/kernel/printk.c b/kernel/printk.c
index 0b31715f335a..abbdd9e2ac82 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -63,8 +63,6 @@ void asmlinkage __attribute__((weak)) early_printk(const char *fmt, ...)
 #define MINIMUM_CONSOLE_LOGLEVEL 1 /* Minimum loglevel we let people use */
 #define DEFAULT_CONSOLE_LOGLEVEL 7 /* anything MORE serious than KERN_DEBUG */
 
-DECLARE_WAIT_QUEUE_HEAD(log_wait);
-
 int console_printk[4] = {
         DEFAULT_CONSOLE_LOGLEVEL,       /* console_loglevel */
         DEFAULT_MESSAGE_LOGLEVEL,       /* default_message_loglevel */
@@ -224,6 +222,7 @@ struct log {
 static DEFINE_RAW_SPINLOCK(logbuf_lock);
 
 #ifdef CONFIG_PRINTK
+DECLARE_WAIT_QUEUE_HEAD(log_wait);
 /* the next printk record to read by syslog(READ) or /proc/kmsg */
 static u64 syslog_seq;
 static u32 syslog_idx;
@@ -1957,45 +1956,6 @@ int is_console_locked(void)
         return console_locked;
 }
 
-/*
- * Delayed printk version, for scheduler-internal messages:
- */
-#define PRINTK_BUF_SIZE         512
-
-#define PRINTK_PENDING_WAKEUP   0x01
-#define PRINTK_PENDING_SCHED    0x02
-
-static DEFINE_PER_CPU(int, printk_pending);
-static DEFINE_PER_CPU(char [PRINTK_BUF_SIZE], printk_sched_buf);
-
-static void wake_up_klogd_work_func(struct irq_work *irq_work)
-{
-        int pending = __this_cpu_xchg(printk_pending, 0);
-
-        if (pending & PRINTK_PENDING_SCHED) {
-                char *buf = __get_cpu_var(printk_sched_buf);
-                printk(KERN_WARNING "[sched_delayed] %s", buf);
-        }
-
-        if (pending & PRINTK_PENDING_WAKEUP)
-                wake_up_interruptible(&log_wait);
-}
-
-static DEFINE_PER_CPU(struct irq_work, wake_up_klogd_work) = {
-        .func = wake_up_klogd_work_func,
-        .flags = IRQ_WORK_LAZY,
-};
-
-void wake_up_klogd(void)
-{
-        preempt_disable();
-        if (waitqueue_active(&log_wait)) {
-                this_cpu_or(printk_pending, PRINTK_PENDING_WAKEUP);
-                irq_work_queue(&__get_cpu_var(wake_up_klogd_work));
-        }
-        preempt_enable();
-}
-
 static void console_cont_flush(char *text, size_t size)
 {
         unsigned long flags;
@@ -2458,6 +2418,44 @@ static int __init printk_late_init(void)
 late_initcall(printk_late_init);
 
 #if defined CONFIG_PRINTK
+/*
+ * Delayed printk version, for scheduler-internal messages:
+ */
+#define PRINTK_BUF_SIZE         512
+
+#define PRINTK_PENDING_WAKEUP   0x01
+#define PRINTK_PENDING_SCHED    0x02
+
+static DEFINE_PER_CPU(int, printk_pending);
+static DEFINE_PER_CPU(char [PRINTK_BUF_SIZE], printk_sched_buf);
+
+static void wake_up_klogd_work_func(struct irq_work *irq_work)
+{
+        int pending = __this_cpu_xchg(printk_pending, 0);
+
+        if (pending & PRINTK_PENDING_SCHED) {
+                char *buf = __get_cpu_var(printk_sched_buf);
+                printk(KERN_WARNING "[sched_delayed] %s", buf);
+        }
+
+        if (pending & PRINTK_PENDING_WAKEUP)
+                wake_up_interruptible(&log_wait);
+}
+
+static DEFINE_PER_CPU(struct irq_work, wake_up_klogd_work) = {
+        .func = wake_up_klogd_work_func,
+        .flags = IRQ_WORK_LAZY,
+};
+
+void wake_up_klogd(void)
+{
+        preempt_disable();
+        if (waitqueue_active(&log_wait)) {
+                this_cpu_or(printk_pending, PRINTK_PENDING_WAKEUP);
+                irq_work_queue(&__get_cpu_var(wake_up_klogd_work));
+        }
+        preempt_enable();
+}
 
 int printk_sched(const char *fmt, ...)
 {
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 7f12624a393c..23606ee961b5 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -4126,6 +4126,10 @@ long sched_setaffinity(pid_t pid, const struct cpumask *in_mask)
         get_task_struct(p);
         rcu_read_unlock();
 
+        if (p->flags & PF_NO_SETAFFINITY) {
+                retval = -EINVAL;
+                goto out_put_task;
+        }
         if (!alloc_cpumask_var(&cpus_allowed, GFP_KERNEL)) {
                 retval = -ENOMEM;
                 goto out_put_task;
@@ -4773,11 +4777,6 @@ int set_cpus_allowed_ptr(struct task_struct *p, const struct cpumask *new_mask)
                 goto out;
         }
 
-        if (unlikely((p->flags & PF_THREAD_BOUND) && p != current)) {
-                ret = -EINVAL;
-                goto out;
-        }
-
         do_set_cpus_allowed(p, new_mask);
 
         /* Can the task run on the task's current CPU? If so, we're done */
diff --git a/kernel/sys.c b/kernel/sys.c
index 81f56445fba9..39c9c4a2949f 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -2185,9 +2185,8 @@ SYSCALL_DEFINE3(getcpu, unsigned __user *, cpup, unsigned __user *, nodep,
 
 char poweroff_cmd[POWEROFF_CMD_PATH_LEN] = "/sbin/poweroff";
 
-static int __orderly_poweroff(void)
+static int __orderly_poweroff(bool force)
 {
-        int argc;
         char **argv;
         static char *envp[] = {
                 "HOME=/",
@@ -2196,20 +2195,40 @@ static int __orderly_poweroff(void)
         };
         int ret;
 
-        argv = argv_split(GFP_ATOMIC, poweroff_cmd, &argc);
-        if (argv == NULL) {
+        argv = argv_split(GFP_KERNEL, poweroff_cmd, NULL);
+        if (argv) {
+                ret = call_usermodehelper(argv[0], argv, envp, UMH_WAIT_EXEC);
+                argv_free(argv);
+        } else {
                 printk(KERN_WARNING "%s failed to allocate memory for \"%s\"\n",
-                       __func__, poweroff_cmd);
-                return -ENOMEM;
+                                         __func__, poweroff_cmd);
+                ret = -ENOMEM;
         }
 
-        ret = call_usermodehelper_fns(argv[0], argv, envp, UMH_WAIT_EXEC,
-                                      NULL, NULL, NULL);
-        argv_free(argv);
+        if (ret && force) {
+                printk(KERN_WARNING "Failed to start orderly shutdown: "
+                                        "forcing the issue\n");
+                /*
+                 * I guess this should try to kick off some daemon to sync and
+                 * poweroff asap.  Or not even bother syncing if we're doing an
+                 * emergency shutdown?
+                 */
+                emergency_sync();
+                kernel_power_off();
+        }
 
         return ret;
 }
 
+static bool poweroff_force;
+
+static void poweroff_work_func(struct work_struct *work)
+{
+        __orderly_poweroff(poweroff_force);
+}
+
+static DECLARE_WORK(poweroff_work, poweroff_work_func);
+
 /**
  * orderly_poweroff - Trigger an orderly system poweroff
  * @force: force poweroff if command execution fails
@@ -2219,21 +2238,9 @@ static int __orderly_poweroff(void)
  */
 int orderly_poweroff(bool force)
 {
-        int ret = __orderly_poweroff();
-
-        if (ret && force) {
-                printk(KERN_WARNING "Failed to start orderly shutdown: "
-                       "forcing the issue\n");
-
-                /*
-                 * I guess this should try to kick off some daemon to sync and
-                 * poweroff asap.  Or not even bother syncing if we're doing an
-                 * emergency shutdown?
-                 */
-                emergency_sync();
-                kernel_power_off();
-        }
-
-        return ret;
+        if (force) /* do not override the pending "true" */
+                poweroff_force = true;
+        schedule_work(&poweroff_work);
+        return 0;
 }
 EXPORT_SYMBOL_GPL(orderly_poweroff);
diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c
index 2fb8cb88df8d..7f32fe0e52cd 100644
--- a/kernel/time/tick-broadcast.c
+++ b/kernel/time/tick-broadcast.c
@@ -67,7 +67,8 @@ static void tick_broadcast_start_periodic(struct clock_event_device *bc)
  */
 int tick_check_broadcast_device(struct clock_event_device *dev)
 {
-        if ((tick_broadcast_device.evtdev &&
+        if ((dev->features & CLOCK_EVT_FEAT_DUMMY) ||
+            (tick_broadcast_device.evtdev &&
              tick_broadcast_device.evtdev->rating >= dev->rating) ||
              (dev->features & CLOCK_EVT_FEAT_C3STOP))
                 return 0;
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index ab25b88aae56..6893d5a2bf08 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -3104,8 +3104,8 @@ __unregister_ftrace_function_probe(char *glob, struct ftrace_probe_ops *ops,
                                         continue;
                         }
 
-                        hlist_del(&entry->node);
-                        call_rcu(&entry->rcu, ftrace_free_entry_rcu);
+                        hlist_del_rcu(&entry->node);
+                        call_rcu_sched(&entry->rcu, ftrace_free_entry_rcu);
                 }
         }
         __disable_ftrace_function_probe();
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 1f835a83cb2c..4f1dade56981 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -704,7 +704,7 @@ __update_max_tr(struct trace_array *tr, struct task_struct *tsk, int cpu)
 void
 update_max_tr(struct trace_array *tr, struct task_struct *tsk, int cpu)
 {
-        struct ring_buffer *buf = tr->buffer;
+        struct ring_buffer *buf;
 
         if (trace_stop_count)
                 return;
@@ -719,6 +719,7 @@ update_max_tr(struct trace_array *tr, struct task_struct *tsk, int cpu)
 
         arch_spin_lock(&ftrace_max_lock);
 
+        buf = tr->buffer;
         tr->buffer = max_tr.buffer;
         max_tr.buffer = buf;
 
@@ -2880,11 +2881,25 @@ static int set_tracer_option(struct tracer *trace, char *cmp, int neg)
         return -EINVAL;
 }
 
-static void set_tracer_flags(unsigned int mask, int enabled)
+/* Some tracers require overwrite to stay enabled */
+int trace_keep_overwrite(struct tracer *tracer, u32 mask, int set)
+{
+        if (tracer->enabled && (mask & TRACE_ITER_OVERWRITE) && !set)
+                return -1;
+
+        return 0;
+}
+
+int set_tracer_flag(unsigned int mask, int enabled)
 {
         /* do nothing if flag is already set */
         if (!!(trace_flags & mask) == !!enabled)
-                return;
+                return 0;
+
+        /* Give the tracer a chance to approve the change */
+        if (current_trace->flag_changed)
+                if (current_trace->flag_changed(current_trace, mask, !!enabled))
+                        return -EINVAL;
 
         if (enabled)
                 trace_flags |= mask;
@@ -2894,18 +2909,24 @@ static void set_tracer_flags(unsigned int mask, int enabled)
         if (mask == TRACE_ITER_RECORD_CMD)
                 trace_event_enable_cmd_record(enabled);
 
-        if (mask == TRACE_ITER_OVERWRITE)
+        if (mask == TRACE_ITER_OVERWRITE) {
                 ring_buffer_change_overwrite(global_trace.buffer, enabled);
+#ifdef CONFIG_TRACER_MAX_TRACE
+                ring_buffer_change_overwrite(max_tr.buffer, enabled);
+#endif
+        }
 
         if (mask == TRACE_ITER_PRINTK)
                 trace_printk_start_stop_comm(enabled);
+
+        return 0;
 }
 
 static int trace_set_options(char *option)
 {
         char *cmp;
         int neg = 0;
-        int ret = 0;
+        int ret = -ENODEV;
         int i;
 
         cmp = strstrip(option);
@@ -2915,19 +2936,20 @@ static int trace_set_options(char *option)
                 cmp += 2;
         }
 
+        mutex_lock(&trace_types_lock);
+
         for (i = 0; trace_options[i]; i++) {
                 if (strcmp(cmp, trace_options[i]) == 0) {
-                        set_tracer_flags(1 << i, !neg);
+                        ret = set_tracer_flag(1 << i, !neg);
                         break;
                 }
         }
 
         /* If no option could be set, test the specific tracer options */
-        if (!trace_options[i]) {
-                mutex_lock(&trace_types_lock);
+        if (!trace_options[i])
                 ret = set_tracer_option(current_trace, cmp, neg);
-                mutex_unlock(&trace_types_lock);
-        }
+
+        mutex_unlock(&trace_types_lock);
 
         return ret;
 }
@@ -2937,6 +2959,7 @@ tracing_trace_options_write(struct file *filp, const char __user *ubuf,
                         size_t cnt, loff_t *ppos)
 {
         char buf[64];
+        int ret;
 
         if (cnt >= sizeof(buf))
                 return -EINVAL;
@@ -2946,7 +2969,9 @@ tracing_trace_options_write(struct file *filp, const char __user *ubuf,
 
         buf[cnt] = 0;
 
-        trace_set_options(buf);
+        ret = trace_set_options(buf);
+        if (ret < 0)
+                return ret;
 
         *ppos += cnt;
 
@@ -3250,6 +3275,9 @@ static int tracing_set_tracer(const char *buf)
                 goto out;
 
         trace_branch_disable();
+
+        current_trace->enabled = false;
+
         if (current_trace->reset)
                 current_trace->reset(tr);
 
@@ -3294,6 +3322,7 @@ static int tracing_set_tracer(const char *buf)
         }
 
         current_trace = t;
+        current_trace->enabled = true;
         trace_branch_enable(tr);
  out:
         mutex_unlock(&trace_types_lock);
@@ -4780,7 +4809,13 @@ trace_options_core_write(struct file *filp, const char __user *ubuf, size_t cnt,
 
         if (val != 0 && val != 1)
                 return -EINVAL;
-        set_tracer_flags(1 << index, val);
+
+        mutex_lock(&trace_types_lock);
+        ret = set_tracer_flag(1 << index, val);
+        mutex_unlock(&trace_types_lock);
+
+        if (ret < 0)
+                return ret;
 
         *ppos += cnt;
 
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 57d7e5397d56..2081971367ea 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -283,11 +283,15 @@ struct tracer {
         enum print_line_t       (*print_line)(struct trace_iterator *iter);
         /* If you handled the flag setting, return 0 */
         int                     (*set_flag)(u32 old_flags, u32 bit, int set);
+        /* Return 0 if OK with change, else return non-zero */
+        int                     (*flag_changed)(struct tracer *tracer,
+                                                u32 mask, int set);
         struct tracer           *next;
         struct tracer_flags     *flags;
         bool                    print_max;
         bool                    use_max_tr;
         bool                    allocated_snapshot;
+        bool                    enabled;
 };
 
 
@@ -943,6 +947,8 @@ extern const char *__stop___trace_bprintk_fmt[];
 
 void trace_printk_init_buffers(void);
 void trace_printk_start_comm(void);
+int trace_keep_overwrite(struct tracer *tracer, u32 mask, int set);
+int set_tracer_flag(unsigned int mask, int enabled);
 
 #undef FTRACE_ENTRY
 #define FTRACE_ENTRY(call, struct_name, id, tstruct, print, filter)     \
diff --git a/kernel/trace/trace_irqsoff.c b/kernel/trace/trace_irqsoff.c
index 713a2cac4881..443b25b43b4f 100644
--- a/kernel/trace/trace_irqsoff.c
+++ b/kernel/trace/trace_irqsoff.c
@@ -32,7 +32,7 @@ enum {
 
 static int trace_type __read_mostly;
 
-static int save_lat_flag;
+static int save_flags;
 
 static void stop_irqsoff_tracer(struct trace_array *tr, int graph);
 static int start_irqsoff_tracer(struct trace_array *tr, int graph);
@@ -558,8 +558,11 @@ static void stop_irqsoff_tracer(struct trace_array *tr, int graph)
 
 static void __irqsoff_tracer_init(struct trace_array *tr)
 {
-        save_lat_flag = trace_flags & TRACE_ITER_LATENCY_FMT;
-        trace_flags |= TRACE_ITER_LATENCY_FMT;
+        save_flags = trace_flags;
+
+        /* non overwrite screws up the latency tracers */
+        set_tracer_flag(TRACE_ITER_OVERWRITE, 1);
+        set_tracer_flag(TRACE_ITER_LATENCY_FMT, 1);
 
         tracing_max_latency = 0;
         irqsoff_trace = tr;
@@ -573,10 +576,13 @@ static void __irqsoff_tracer_init(struct trace_array *tr)
 
 static void irqsoff_tracer_reset(struct trace_array *tr)
 {
+        int lat_flag = save_flags & TRACE_ITER_LATENCY_FMT;
+        int overwrite_flag = save_flags & TRACE_ITER_OVERWRITE;
+
         stop_irqsoff_tracer(tr, is_graph());
 
-        if (!save_lat_flag)
-                trace_flags &= ~TRACE_ITER_LATENCY_FMT;
+        set_tracer_flag(TRACE_ITER_LATENCY_FMT, lat_flag);
+        set_tracer_flag(TRACE_ITER_OVERWRITE, overwrite_flag);
 }
 
 static void irqsoff_tracer_start(struct trace_array *tr)
@@ -609,6 +615,7 @@ static struct tracer irqsoff_tracer __read_mostly =
         .print_line     = irqsoff_print_line,
         .flags          = &tracer_flags,
         .set_flag       = irqsoff_set_flag,
+        .flag_changed   = trace_keep_overwrite,
 #ifdef CONFIG_FTRACE_SELFTEST
         .selftest    = trace_selftest_startup_irqsoff,
 #endif
@@ -642,6 +649,7 @@ static struct tracer preemptoff_tracer __read_mostly =
         .print_line     = irqsoff_print_line,
         .flags          = &tracer_flags,
         .set_flag       = irqsoff_set_flag,
+        .flag_changed   = trace_keep_overwrite,
 #ifdef CONFIG_FTRACE_SELFTEST
         .selftest    = trace_selftest_startup_preemptoff,
 #endif
@@ -677,6 +685,7 @@ static struct tracer preemptirqsoff_tracer __read_mostly =
         .print_line     = irqsoff_print_line,
         .flags          = &tracer_flags,
         .set_flag       = irqsoff_set_flag,
+        .flag_changed   = trace_keep_overwrite,
 #ifdef CONFIG_FTRACE_SELFTEST
         .selftest    = trace_selftest_startup_preemptirqsoff,
 #endif
diff --git a/kernel/trace/trace_sched_wakeup.c b/kernel/trace/trace_sched_wakeup.c
index 75aa97fbe1a1..fde652c9a511 100644
--- a/kernel/trace/trace_sched_wakeup.c
+++ b/kernel/trace/trace_sched_wakeup.c
@@ -36,7 +36,7 @@ static void __wakeup_reset(struct trace_array *tr);
 static int wakeup_graph_entry(struct ftrace_graph_ent *trace);
 static void wakeup_graph_return(struct ftrace_graph_ret *trace);
 
-static int save_lat_flag;
+static int save_flags;
 
 #define TRACE_DISPLAY_GRAPH     1
 
@@ -540,8 +540,11 @@ static void stop_wakeup_tracer(struct trace_array *tr)
 
 static int __wakeup_tracer_init(struct trace_array *tr)
 {
-        save_lat_flag = trace_flags & TRACE_ITER_LATENCY_FMT;
-        trace_flags |= TRACE_ITER_LATENCY_FMT;
+        save_flags = trace_flags;
+
+        /* non overwrite screws up the latency tracers */
+        set_tracer_flag(TRACE_ITER_OVERWRITE, 1);
+        set_tracer_flag(TRACE_ITER_LATENCY_FMT, 1);
 
         tracing_max_latency = 0;
         wakeup_trace = tr;
@@ -563,12 +566,15 @@ static int wakeup_rt_tracer_init(struct trace_array *tr)
 
 static void wakeup_tracer_reset(struct trace_array *tr)
 {
+        int lat_flag = save_flags & TRACE_ITER_LATENCY_FMT;
+        int overwrite_flag = save_flags & TRACE_ITER_OVERWRITE;
+
         stop_wakeup_tracer(tr);
         /* make sure we put back any tasks we are tracing */
         wakeup_reset(tr);
 
-        if (!save_lat_flag)
-                trace_flags &= ~TRACE_ITER_LATENCY_FMT;
+        set_tracer_flag(TRACE_ITER_LATENCY_FMT, lat_flag);
+        set_tracer_flag(TRACE_ITER_OVERWRITE, overwrite_flag);
 }
 
 static void wakeup_tracer_start(struct trace_array *tr)
@@ -594,6 +600,7 @@ static struct tracer wakeup_tracer __read_mostly =
         .print_line     = wakeup_print_line,
         .flags          = &tracer_flags,
         .set_flag       = wakeup_set_flag,
+        .flag_changed   = trace_keep_overwrite,
 #ifdef CONFIG_FTRACE_SELFTEST
         .selftest    = trace_selftest_startup_wakeup,
 #endif
@@ -615,6 +622,7 @@ static struct tracer wakeup_rt_tracer __read_mostly =
         .print_line     = wakeup_print_line,
         .flags          = &tracer_flags,
         .set_flag       = wakeup_set_flag,
+        .flag_changed   = trace_keep_overwrite,
 #ifdef CONFIG_FTRACE_SELFTEST
         .selftest    = trace_selftest_startup_wakeup,
 #endif
diff --git a/kernel/user.c b/kernel/user.c
index e81978e8c03b..8e635a18ab52 100644
--- a/kernel/user.c
+++ b/kernel/user.c
@@ -51,6 +51,8 @@ struct user_namespace init_user_ns = {
         .owner = GLOBAL_ROOT_UID,
         .group = GLOBAL_ROOT_GID,
         .proc_inum = PROC_USER_INIT_INO,
+        .may_mount_sysfs = true,
+        .may_mount_proc = true,
 };
 EXPORT_SYMBOL_GPL(init_user_ns);
 
diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c
index b14f4d342043..a54f26f82eb2 100644
--- a/kernel/user_namespace.c
+++ b/kernel/user_namespace.c
@@ -61,6 +61,15 @@ int create_user_ns(struct cred *new)
         kgid_t group = new->egid;
         int ret;
 
+        /*
+         * Verify that we can not violate the policy of which files
+         * may be accessed that is specified by the root directory,
+         * by verifing that the root directory is at the root of the
+         * mount namespace which allows all files to be accessed.
+         */
+        if (current_chrooted())
+                return -EPERM;
+
         /* The creator needs a mapping in the parent user namespace
          * or else we won't be able to reasonably tell userspace who
          * created a user_namespace.
@@ -87,6 +96,8 @@ int create_user_ns(struct cred *new)
 
         set_cred_user_ns(new, ns);
 
+        update_mnt_policy(ns);
+
         return 0;
 }
 
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 55fac5b991b7..dd2a4c49a39a 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -41,7 +41,11 @@
 #include <linux/debug_locks.h>
 #include <linux/lockdep.h>
 #include <linux/idr.h>
+#include <linux/jhash.h>
 #include <linux/hashtable.h>
+#include <linux/rculist.h>
+#include <linux/nodemask.h>
+#include <linux/moduleparam.h>
 
 #include "workqueue_internal.h"
 
@@ -58,12 +62,11 @@ enum {
          * %WORKER_UNBOUND set and concurrency management disabled, and may
          * be executing on any CPU.  The pool behaves as an unbound one.
          *
-         * Note that DISASSOCIATED can be flipped only while holding
-         * assoc_mutex to avoid changing binding state while
+         * Note that DISASSOCIATED should be flipped only while holding
+         * manager_mutex to avoid changing binding state while
          * create_worker() is in progress.
          */
         POOL_MANAGE_WORKERS     = 1 << 0,       /* need to manage workers */
-        POOL_MANAGING_WORKERS   = 1 << 1,       /* managing workers */
         POOL_DISASSOCIATED      = 1 << 2,       /* cpu can't serve workers */
         POOL_FREEZING           = 1 << 3,       /* freeze in progress */
 
@@ -74,12 +77,14 @@ enum {
         WORKER_PREP             = 1 << 3,       /* preparing to run works */
         WORKER_CPU_INTENSIVE    = 1 << 6,       /* cpu intensive */
         WORKER_UNBOUND          = 1 << 7,       /* worker is unbound */
+        WORKER_REBOUND          = 1 << 8,       /* worker was rebound */
 
-        WORKER_NOT_RUNNING      = WORKER_PREP | WORKER_UNBOUND |
-                                  WORKER_CPU_INTENSIVE,
+        WORKER_NOT_RUNNING      = WORKER_PREP | WORKER_CPU_INTENSIVE |
+                                  WORKER_UNBOUND | WORKER_REBOUND,
 
         NR_STD_WORKER_POOLS     = 2,            /* # standard pools per cpu */
 
+        UNBOUND_POOL_HASH_ORDER = 6,            /* hashed by pool->attrs */
         BUSY_WORKER_HASH_ORDER  = 6,            /* 64 pointers */
 
         MAX_IDLE_WORKERS_RATIO  = 4,            /* 1/4 of busy can be idle */
@@ -97,6 +102,8 @@ enum {
          */
         RESCUER_NICE_LEVEL      = -20,
         HIGHPRI_NICE_LEVEL      = -20,
+
+        WQ_NAME_LEN             = 24,
 };
 
 /*
@@ -115,16 +122,26 @@ enum {
  *    cpu or grabbing pool->lock is enough for read access.  If
  *    POOL_DISASSOCIATED is set, it's identical to L.
  *
- * F: wq->flush_mutex protected.
+ * MG: pool->manager_mutex and pool->lock protected.  Writes require both
+ *     locks.  Reads can happen under either lock.
+ *
+ * PL: wq_pool_mutex protected.
+ *
+ * PR: wq_pool_mutex protected for writes.  Sched-RCU protected for reads.
+ *
+ * WQ: wq->mutex protected.
  *
- * W: workqueue_lock protected.
+ * WR: wq->mutex protected for writes.  Sched-RCU protected for reads.
+ *
+ * MD: wq_mayday_lock protected.
  */
 
 /* struct worker is defined in workqueue_internal.h */
 
 struct worker_pool {
         spinlock_t              lock;           /* the pool lock */
-        unsigned int            cpu;            /* I: the associated cpu */
+        int                     cpu;            /* I: the associated cpu */
+        int                     node;           /* I: the associated node ID */
         int                     id;             /* I: pool ID */
         unsigned int            flags;          /* X: flags */
 
@@ -138,12 +155,18 @@ struct worker_pool {
         struct timer_list       idle_timer;     /* L: worker idle timeout */
         struct timer_list       mayday_timer;   /* L: SOS timer for workers */
 
-        /* workers are chained either in busy_hash or idle_list */
+        /* a workers is either on busy_hash or idle_list, or the manager */
         DECLARE_HASHTABLE(busy_hash, BUSY_WORKER_HASH_ORDER);
                                                 /* L: hash of busy workers */
 
-        struct mutex            assoc_mutex;    /* protect POOL_DISASSOCIATED */
-        struct ida              worker_ida;     /* L: for worker IDs */
+        /* see manage_workers() for details on the two manager mutexes */
+        struct mutex            manager_arb;    /* manager arbitration */
+        struct mutex            manager_mutex;  /* manager exclusion */
+        struct idr              worker_idr;     /* MG: worker IDs and iteration */
+
+        struct workqueue_attrs  *attrs;         /* I: worker attributes */
+        struct hlist_node       hash_node;      /* PL: unbound_pool_hash node */
+        int                     refcnt;         /* PL: refcnt for unbound pools */
 
         /*
          * The current concurrency level.  As it's likely to be accessed
@@ -151,6 +174,12 @@ struct worker_pool {
          * cacheline.
          */
         atomic_t                nr_running ____cacheline_aligned_in_smp;
+
+        /*
+         * Destruction of pool is sched-RCU protected to allow dereferences
+         * from get_work_pool().
+         */
+        struct rcu_head         rcu;
 } ____cacheline_aligned_in_smp;
 
 /*
@@ -164,75 +193,107 @@ struct pool_workqueue {
         struct workqueue_struct *wq;            /* I: the owning workqueue */
         int                     work_color;     /* L: current color */
         int                     flush_color;    /* L: flushing color */
+        int                     refcnt;         /* L: reference count */
         int                     nr_in_flight[WORK_NR_COLORS];
                                                 /* L: nr of in_flight works */
         int                     nr_active;      /* L: nr of active works */
         int                     max_active;     /* L: max active works */
         struct list_head        delayed_works;  /* L: delayed works */
-};
+        struct list_head        pwqs_node;      /* WR: node on wq->pwqs */
+        struct list_head        mayday_node;    /* MD: node on wq->maydays */
+
+        /*
+         * Release of unbound pwq is punted to system_wq.  See put_pwq()
+         * and pwq_unbound_release_workfn() for details.  pool_workqueue
+         * itself is also sched-RCU protected so that the first pwq can be
+         * determined without grabbing wq->mutex.
+         */
+        struct work_struct      unbound_release_work;
+        struct rcu_head         rcu;
+} __aligned(1 << WORK_STRUCT_FLAG_BITS);
 
 /*
  * Structure used to wait for workqueue flush.
  */
 struct wq_flusher {
-        struct list_head        list;           /* F: list of flushers */
-        int                     flush_color;    /* F: flush color waiting for */
+        struct list_head        list;           /* WQ: list of flushers */
+        int                     flush_color;    /* WQ: flush color waiting for */
         struct completion       done;           /* flush completion */
 };
 
-/*
- * All cpumasks are assumed to be always set on UP and thus can't be
- * used to determine whether there's something to be done.
- */
-#ifdef CONFIG_SMP
-typedef cpumask_var_t mayday_mask_t;
-#define mayday_test_and_set_cpu(cpu, mask)      \
-        cpumask_test_and_set_cpu((cpu), (mask))
-#define mayday_clear_cpu(cpu, mask)             cpumask_clear_cpu((cpu), (mask))
-#define for_each_mayday_cpu(cpu, mask)          for_each_cpu((cpu), (mask))
-#define alloc_mayday_mask(maskp, gfp)           zalloc_cpumask_var((maskp), (gfp))
-#define free_mayday_mask(mask)                  free_cpumask_var((mask))
-#else
-typedef unsigned long mayday_mask_t;
-#define mayday_test_and_set_cpu(cpu, mask)      test_and_set_bit(0, &(mask))
-#define mayday_clear_cpu(cpu, mask)             clear_bit(0, &(mask))
-#define for_each_mayday_cpu(cpu, mask)          if ((cpu) = 0, (mask))
-#define alloc_mayday_mask(maskp, gfp)           true
-#define free_mayday_mask(mask)                  do { } while (0)
-#endif
+struct wq_device;
 
 /*
- * The externally visible workqueue abstraction is an array of
- * per-CPU workqueues:
+ * The externally visible workqueue.  It relays the issued work items to
+ * the appropriate worker_pool through its pool_workqueues.
  */
 struct workqueue_struct {
-        unsigned int            flags;          /* W: WQ_* flags */
-        union {
-                struct pool_workqueue __percpu          *pcpu;
-                struct pool_workqueue                   *single;
-                unsigned long                           v;
-        } pool_wq;                              /* I: pwq's */
-        struct list_head        list;           /* W: list of all workqueues */
-
-        struct mutex            flush_mutex;    /* protects wq flushing */
-        int                     work_color;     /* F: current work color */
-        int                     flush_color;    /* F: current flush color */
+        struct list_head        pwqs;           /* WR: all pwqs of this wq */
+        struct list_head        list;           /* PL: list of all workqueues */
+
+        struct mutex            mutex;          /* protects this wq */
+        int                     work_color;     /* WQ: current work color */
+        int                     flush_color;    /* WQ: current flush color */
         atomic_t                nr_pwqs_to_flush; /* flush in progress */
-        struct wq_flusher       *first_flusher; /* F: first flusher */
-        struct list_head        flusher_queue;  /* F: flush waiters */
-        struct list_head        flusher_overflow; /* F: flush overflow list */
+        struct wq_flusher       *first_flusher; /* WQ: first flusher */
+        struct list_head        flusher_queue;  /* WQ: flush waiters */
+        struct list_head        flusher_overflow; /* WQ: flush overflow list */
 
-        mayday_mask_t           mayday_mask;    /* cpus requesting rescue */
+        struct list_head        maydays;        /* MD: pwqs requesting rescue */
         struct worker           *rescuer;       /* I: rescue worker */
 
-        int                     nr_drainers;    /* W: drain in progress */
-        int                     saved_max_active; /* W: saved pwq max_active */
+        int                     nr_drainers;    /* WQ: drain in progress */
+        int                     saved_max_active; /* WQ: saved pwq max_active */
+
+        struct workqueue_attrs  *unbound_attrs; /* WQ: only for unbound wqs */
+        struct pool_workqueue   *dfl_pwq;       /* WQ: only for unbound wqs */
+
+#ifdef CONFIG_SYSFS
+        struct wq_device        *wq_dev;        /* I: for sysfs interface */
+#endif
 #ifdef CONFIG_LOCKDEP
         struct lockdep_map      lockdep_map;
 #endif
-        char                    name[];         /* I: workqueue name */
+        char                    name[WQ_NAME_LEN]; /* I: workqueue name */
+
+        /* hot fields used during command issue, aligned to cacheline */
+        unsigned int            flags ____cacheline_aligned; /* WQ: WQ_* flags */
+        struct pool_workqueue __percpu *cpu_pwqs; /* I: per-cpu pwqs */
+        struct pool_workqueue __rcu *numa_pwq_tbl[]; /* FR: unbound pwqs indexed by node */
 };
 
+static struct kmem_cache *pwq_cache;
+
+static int wq_numa_tbl_len;             /* highest possible NUMA node id + 1 */
+static cpumask_var_t *wq_numa_possible_cpumask;
+                                        /* possible CPUs of each node */
+
+static bool wq_disable_numa;
+module_param_named(disable_numa, wq_disable_numa, bool, 0444);
+
+static bool wq_numa_enabled;            /* unbound NUMA affinity enabled */
+
+/* buf for wq_update_unbound_numa_attrs(), protected by CPU hotplug exclusion */
+static struct workqueue_attrs *wq_update_unbound_numa_attrs_buf;
+
+static DEFINE_MUTEX(wq_pool_mutex);     /* protects pools and workqueues list */
+static DEFINE_SPINLOCK(wq_mayday_lock); /* protects wq->maydays list */
+
+static LIST_HEAD(workqueues);           /* PL: list of all workqueues */
+static bool workqueue_freezing;         /* PL: have wqs started freezing? */
+
+/* the per-cpu worker pools */
+static DEFINE_PER_CPU_SHARED_ALIGNED(struct worker_pool [NR_STD_WORKER_POOLS],
+                                     cpu_worker_pools);
+
+static DEFINE_IDR(worker_pool_idr);     /* PR: idr of all pools */
+
+/* PL: hash of all unbound pools keyed by pool->attrs */
+static DEFINE_HASHTABLE(unbound_pool_hash, UNBOUND_POOL_HASH_ORDER);
+
+/* I: attributes used when instantiating standard unbound pools on demand */
+static struct workqueue_attrs *unbound_std_wq_attrs[NR_STD_WORKER_POOLS];
+
 struct workqueue_struct *system_wq __read_mostly;
 EXPORT_SYMBOL_GPL(system_wq);
 struct workqueue_struct *system_highpri_wq __read_mostly;
@@ -244,64 +305,87 @@ EXPORT_SYMBOL_GPL(system_unbound_wq);
 struct workqueue_struct *system_freezable_wq __read_mostly;
 EXPORT_SYMBOL_GPL(system_freezable_wq);
 
+static int worker_thread(void *__worker);
+static void copy_workqueue_attrs(struct workqueue_attrs *to,
+                                 const struct workqueue_attrs *from);
+
 #define CREATE_TRACE_POINTS
 #include <trace/events/workqueue.h>
 
-#define for_each_std_worker_pool(pool, cpu)                             \
-        for ((pool) = &std_worker_pools(cpu)[0];                        \
-             (pool) < &std_worker_pools(cpu)[NR_STD_WORKER_POOLS]; (pool)++)
+#define assert_rcu_or_pool_mutex()                                      \
+        rcu_lockdep_assert(rcu_read_lock_sched_held() ||                \
+                           lockdep_is_held(&wq_pool_mutex),             \
+                           "sched RCU or wq_pool_mutex should be held")
 
-#define for_each_busy_worker(worker, i, pool)                           \
-        hash_for_each(pool->busy_hash, i, worker, hentry)
+#define assert_rcu_or_wq_mutex(wq)                                      \
+        rcu_lockdep_assert(rcu_read_lock_sched_held() ||                \
+                           lockdep_is_held(&wq->mutex),                 \
+                           "sched RCU or wq->mutex should be held")
 
-static inline int __next_wq_cpu(int cpu, const struct cpumask *mask,
-                                unsigned int sw)
-{
-        if (cpu < nr_cpu_ids) {
-                if (sw & 1) {
-                        cpu = cpumask_next(cpu, mask);
-                        if (cpu < nr_cpu_ids)
-                                return cpu;
-                }
-                if (sw & 2)
-                        return WORK_CPU_UNBOUND;
-        }
-        return WORK_CPU_END;
-}
+#ifdef CONFIG_LOCKDEP
+#define assert_manager_or_pool_lock(pool)                               \
+        WARN_ONCE(debug_locks &&                                        \
+                  !lockdep_is_held(&(pool)->manager_mutex) &&           \
+                  !lockdep_is_held(&(pool)->lock),                      \
+                  "pool->manager_mutex or ->lock should be held")
+#else
+#define assert_manager_or_pool_lock(pool)       do { } while (0)
+#endif
 
-static inline int __next_pwq_cpu(int cpu, const struct cpumask *mask,
-                                 struct workqueue_struct *wq)
-{
-        return __next_wq_cpu(cpu, mask, !(wq->flags & WQ_UNBOUND) ? 1 : 2);
-}
+#define for_each_cpu_worker_pool(pool, cpu)                             \
+        for ((pool) = &per_cpu(cpu_worker_pools, cpu)[0];               \
+             (pool) < &per_cpu(cpu_worker_pools, cpu)[NR_STD_WORKER_POOLS]; \
+             (pool)++)
 
-/*
- * CPU iterators
+/**
+ * for_each_pool - iterate through all worker_pools in the system
+ * @pool: iteration cursor
+ * @pi: integer used for iteration
  *
- * An extra cpu number is defined using an invalid cpu number
- * (WORK_CPU_UNBOUND) to host workqueues which are not bound to any
- * specific CPU.  The following iterators are similar to for_each_*_cpu()
- * iterators but also considers the unbound CPU.
+ * This must be called either with wq_pool_mutex held or sched RCU read
+ * locked.  If the pool needs to be used beyond the locking in effect, the
+ * caller is responsible for guaranteeing that the pool stays online.
  *
- * for_each_wq_cpu()            : possible CPUs + WORK_CPU_UNBOUND
- * for_each_online_wq_cpu()     : online CPUs + WORK_CPU_UNBOUND
- * for_each_pwq_cpu()           : possible CPUs for bound workqueues,
- *                                WORK_CPU_UNBOUND for unbound workqueues
+ * The if/else clause exists only for the lockdep assertion and can be
+ * ignored.
  */
-#define for_each_wq_cpu(cpu)                                            \
-        for ((cpu) = __next_wq_cpu(-1, cpu_possible_mask, 3);           \
-             (cpu) < WORK_CPU_END;                                      \
-             (cpu) = __next_wq_cpu((cpu), cpu_possible_mask, 3))
+#define for_each_pool(pool, pi)                                         \
+        idr_for_each_entry(&worker_pool_idr, pool, pi)                  \
+                if (({ assert_rcu_or_pool_mutex(); false; })) { }       \
+                else
 
-#define for_each_online_wq_cpu(cpu)                                     \
-        for ((cpu) = __next_wq_cpu(-1, cpu_online_mask, 3);             \
-             (cpu) < WORK_CPU_END;                                      \
-             (cpu) = __next_wq_cpu((cpu), cpu_online_mask, 3))
+/**
+ * for_each_pool_worker - iterate through all workers of a worker_pool
+ * @worker: iteration cursor
+ * @wi: integer used for iteration
+ * @pool: worker_pool to iterate workers of
+ *
+ * This must be called with either @pool->manager_mutex or ->lock held.
+ *
+ * The if/else clause exists only for the lockdep assertion and can be
+ * ignored.
+ */
+#define for_each_pool_worker(worker, wi, pool)                          \
+        idr_for_each_entry(&(pool)->worker_idr, (worker), (wi))         \
+                if (({ assert_manager_or_pool_lock((pool)); false; })) { } \
+                else
 
-#define for_each_pwq_cpu(cpu, wq)                                       \
-        for ((cpu) = __next_pwq_cpu(-1, cpu_possible_mask, (wq));       \
-             (cpu) < WORK_CPU_END;                                      \
-             (cpu) = __next_pwq_cpu((cpu), cpu_possible_mask, (wq)))
+/**
+ * for_each_pwq - iterate through all pool_workqueues of the specified workqueue
+ * @pwq: iteration cursor
+ * @wq: the target workqueue
+ *
+ * This must be called either with wq->mutex held or sched RCU read locked.
+ * If the pwq needs to be used beyond the locking in effect, the caller is
+ * responsible for guaranteeing that the pwq stays online.
+ *
+ * The if/else clause exists only for the lockdep assertion and can be
+ * ignored.
+ */
+#define for_each_pwq(pwq, wq)                                           \
+        list_for_each_entry_rcu((pwq), &(wq)->pwqs, pwqs_node)          \
+                if (({ assert_rcu_or_wq_mutex(wq); false; })) { }       \
+                else
 
 #ifdef CONFIG_DEBUG_OBJECTS_WORK
 
@@ -419,77 +503,35 @@ static inline void debug_work_activate(struct work_struct *work) { }
 static inline void debug_work_deactivate(struct work_struct *work) { }
 #endif
 
-/* Serializes the accesses to the list of workqueues. */
-static DEFINE_SPINLOCK(workqueue_lock);
-static LIST_HEAD(workqueues);
-static bool workqueue_freezing;         /* W: have wqs started freezing? */
-
-/*
- * The CPU and unbound standard worker pools.  The unbound ones have
- * POOL_DISASSOCIATED set, and their workers have WORKER_UNBOUND set.
- */
-static DEFINE_PER_CPU_SHARED_ALIGNED(struct worker_pool [NR_STD_WORKER_POOLS],
-                                     cpu_std_worker_pools);
-static struct worker_pool unbound_std_worker_pools[NR_STD_WORKER_POOLS];
-
-/* idr of all pools */
-static DEFINE_MUTEX(worker_pool_idr_mutex);
-static DEFINE_IDR(worker_pool_idr);
-
-static int worker_thread(void *__worker);
-
-static struct worker_pool *std_worker_pools(int cpu)
-{
-        if (cpu != WORK_CPU_UNBOUND)
-                return per_cpu(cpu_std_worker_pools, cpu);
-        else
-                return unbound_std_worker_pools;
-}
-
-static int std_worker_pool_pri(struct worker_pool *pool)
-{
-        return pool - std_worker_pools(pool->cpu);
-}
-
 /* allocate ID and assign it to @pool */
 static int worker_pool_assign_id(struct worker_pool *pool)
 {
         int ret;
 
-        mutex_lock(&worker_pool_idr_mutex);
+        lockdep_assert_held(&wq_pool_mutex);
+
         ret = idr_alloc(&worker_pool_idr, pool, 0, 0, GFP_KERNEL);
-        if (ret >= 0)
+        if (ret >= 0) {
                 pool->id = ret;
-        mutex_unlock(&worker_pool_idr_mutex);
-
-        return ret < 0 ? ret : 0;
+                return 0;
+        }
+        return ret;
 }
 
-/*
- * Lookup worker_pool by id.  The idr currently is built during boot and
- * never modified.  Don't worry about locking for now.
+/**
+ * unbound_pwq_by_node - return the unbound pool_workqueue for the given node
+ * @wq: the target workqueue
+ * @node: the node ID
+ *
+ * This must be called either with pwq_lock held or sched RCU read locked.
+ * If the pwq needs to be used beyond the locking in effect, the caller is
+ * responsible for guaranteeing that the pwq stays online.
  */
-static struct worker_pool *worker_pool_by_id(int pool_id)
-{
-        return idr_find(&worker_pool_idr, pool_id);
-}
-
-static struct worker_pool *get_std_worker_pool(int cpu, bool highpri)
-{
-        struct worker_pool *pools = std_worker_pools(cpu);
-
-        return &pools[highpri];
-}
-
-static struct pool_workqueue *get_pwq(unsigned int cpu,
-                                      struct workqueue_struct *wq)
+static struct pool_workqueue *unbound_pwq_by_node(struct workqueue_struct *wq,
+                                                  int node)
 {
-        if (!(wq->flags & WQ_UNBOUND)) {
-                if (likely(cpu < nr_cpu_ids))
-                        return per_cpu_ptr(wq->pool_wq.pcpu, cpu);
-        } else if (likely(cpu == WORK_CPU_UNBOUND))
-                return wq->pool_wq.single;
-        return NULL;
+        assert_rcu_or_wq_mutex(wq);
+        return rcu_dereference_raw(wq->numa_pwq_tbl[node]);
 }
 
 static unsigned int work_color_to_flags(int color)
@@ -531,7 +573,7 @@ static int work_next_color(int color)
 static inline void set_work_data(struct work_struct *work, unsigned long data,
                                  unsigned long flags)
 {
-        BUG_ON(!work_pending(work));
+        WARN_ON_ONCE(!work_pending(work));
         atomic_long_set(&work->data, data | flags | work_static(work));
 }
 
@@ -583,13 +625,23 @@ static struct pool_workqueue *get_work_pwq(struct work_struct *work)
  * @work: the work item of interest
  *
  * Return the worker_pool @work was last associated with.  %NULL if none.
+ *
+ * Pools are created and destroyed under wq_pool_mutex, and allows read
+ * access under sched-RCU read lock.  As such, this function should be
+ * called under wq_pool_mutex or with preemption disabled.
+ *
+ * All fields of the returned pool are accessible as long as the above
+ * mentioned locking is in effect.  If the returned pool needs to be used
+ * beyond the critical section, the caller is responsible for ensuring the
+ * returned pool is and stays online.
  */
 static struct worker_pool *get_work_pool(struct work_struct *work)
 {
         unsigned long data = atomic_long_read(&work->data);
-        struct worker_pool *pool;
         int pool_id;
 
+        assert_rcu_or_pool_mutex();
+
         if (data & WORK_STRUCT_PWQ)
                 return ((struct pool_workqueue *)
                         (data & WORK_STRUCT_WQ_DATA_MASK))->pool;
@@ -598,9 +650,7 @@ static struct worker_pool *get_work_pool(struct work_struct *work)
         if (pool_id == WORK_OFFQ_POOL_NONE)
                 return NULL;
 
-        pool = worker_pool_by_id(pool_id);
-        WARN_ON_ONCE(!pool);
-        return pool;
+        return idr_find(&worker_pool_idr, pool_id);
 }
 
 /**
@@ -689,7 +739,7 @@ static bool need_to_manage_workers(struct worker_pool *pool)
 /* Do we have too many workers and should some go away? */
 static bool too_many_workers(struct worker_pool *pool)
 {
-        bool managing = pool->flags & POOL_MANAGING_WORKERS;
+        bool managing = mutex_is_locked(&pool->manager_arb);
         int nr_idle = pool->nr_idle + managing; /* manager is considered idle */
         int nr_busy = pool->nr_workers - nr_idle;
 
@@ -744,7 +794,7 @@ static void wake_up_worker(struct worker_pool *pool)
  * CONTEXT:
  * spin_lock_irq(rq->lock)
  */
-void wq_worker_waking_up(struct task_struct *task, unsigned int cpu)
+void wq_worker_waking_up(struct task_struct *task, int cpu)
 {
         struct worker *worker = kthread_data(task);
 
@@ -769,8 +819,7 @@ void wq_worker_waking_up(struct task_struct *task, unsigned int cpu)
  * RETURNS:
  * Worker task on @cpu to wake up, %NULL if none.
  */
-struct task_struct *wq_worker_sleeping(struct task_struct *task,
-                                       unsigned int cpu)
+struct task_struct *wq_worker_sleeping(struct task_struct *task, int cpu)
 {
         struct worker *worker = kthread_data(task), *to_wakeup = NULL;
         struct worker_pool *pool;
@@ -786,7 +835,8 @@ struct task_struct *wq_worker_sleeping(struct task_struct *task,
         pool = worker->pool;
 
         /* this can only happen on the local cpu */
-        BUG_ON(cpu != raw_smp_processor_id());
+        if (WARN_ON_ONCE(cpu != raw_smp_processor_id()))
+                return NULL;
 
         /*
          * The counterpart of the following dec_and_test, implied mb,
@@ -891,13 +941,12 @@ static inline void worker_clr_flags(struct worker *worker, unsigned int flags)
  * recycled work item as currently executing and make it wait until the
  * current execution finishes, introducing an unwanted dependency.
  *
- * This function checks the work item address, work function and workqueue
- * to avoid false positives.  Note that this isn't complete as one may
- * construct a work function which can introduce dependency onto itself
- * through a recycled work item.  Well, if somebody wants to shoot oneself
- * in the foot that badly, there's only so much we can do, and if such
- * deadlock actually occurs, it should be easy to locate the culprit work
- * function.
+ * This function checks the work item address and work function to avoid
+ * false positives.  Note that this isn't complete as one may construct a
+ * work function which can introduce dependency onto itself through a
+ * recycled work item.  Well, if somebody wants to shoot oneself in the
+ * foot that badly, there's only so much we can do, and if such deadlock
+ * actually occurs, it should be easy to locate the culprit work function.
  *
  * CONTEXT:
  * spin_lock_irq(pool->lock).
@@ -961,6 +1010,64 @@ static void move_linked_works(struct work_struct *work, struct list_head *head,
                 *nextp = n;
 }
 
+/**
+ * get_pwq - get an extra reference on the specified pool_workqueue
+ * @pwq: pool_workqueue to get
+ *
+ * Obtain an extra reference on @pwq.  The caller should guarantee that
+ * @pwq has positive refcnt and be holding the matching pool->lock.
+ */
+static void get_pwq(struct pool_workqueue *pwq)
+{
+        lockdep_assert_held(&pwq->pool->lock);
+        WARN_ON_ONCE(pwq->refcnt <= 0);
+        pwq->refcnt++;
+}
+
+/**
+ * put_pwq - put a pool_workqueue reference
+ * @pwq: pool_workqueue to put
+ *
+ * Drop a reference of @pwq.  If its refcnt reaches zero, schedule its
+ * destruction.  The caller should be holding the matching pool->lock.
+ */
+static void put_pwq(struct pool_workqueue *pwq)
+{
+        lockdep_assert_held(&pwq->pool->lock);
+        if (likely(--pwq->refcnt))
+                return;
+        if (WARN_ON_ONCE(!(pwq->wq->flags & WQ_UNBOUND)))
+                return;
+        /*
+         * @pwq can't be released under pool->lock, bounce to
+         * pwq_unbound_release_workfn().  This never recurses on the same
+         * pool->lock as this path is taken only for unbound workqueues and
+         * the release work item is scheduled on a per-cpu workqueue.  To
+         * avoid lockdep warning, unbound pool->locks are given lockdep
+         * subclass of 1 in get_unbound_pool().
+         */
+        schedule_work(&pwq->unbound_release_work);
+}
+
+/**
+ * put_pwq_unlocked - put_pwq() with surrounding pool lock/unlock
+ * @pwq: pool_workqueue to put (can be %NULL)
+ *
+ * put_pwq() with locking.  This function also allows %NULL @pwq.
+ */
+static void put_pwq_unlocked(struct pool_workqueue *pwq)
+{
+        if (pwq) {
+                /*
+                 * As both pwqs and pools are sched-RCU protected, the
+                 * following lock operations are safe.
+                 */
+                spin_lock_irq(&pwq->pool->lock);
+                put_pwq(pwq);
+                spin_unlock_irq(&pwq->pool->lock);
+        }
+}
+
 static void pwq_activate_delayed_work(struct work_struct *work)
 {
         struct pool_workqueue *pwq = get_work_pwq(work);
@@ -992,9 +1099,9 @@ static void pwq_activate_first_delayed(struct pool_workqueue *pwq)
  */
 static void pwq_dec_nr_in_flight(struct pool_workqueue *pwq, int color)
 {
-        /* ignore uncolored works */
+        /* uncolored work items don't participate in flushing or nr_active */
         if (color == WORK_NO_COLOR)
-                return;
+                goto out_put;
 
         pwq->nr_in_flight[color]--;
 
@@ -1007,11 +1114,11 @@ static void pwq_dec_nr_in_flight(struct pool_workqueue *pwq, int color)
 
         /* is flush in progress and are we at the flushing tip? */
         if (likely(pwq->flush_color != color))
-                return;
+                goto out_put;
 
         /* are there still in-flight works? */
         if (pwq->nr_in_flight[color])
-                return;
+                goto out_put;
 
         /* this pwq is done, clear flush_color */
         pwq->flush_color = -1;
@@ -1022,6 +1129,8 @@ static void pwq_dec_nr_in_flight(struct pool_workqueue *pwq, int color)
          */
         if (atomic_dec_and_test(&pwq->wq->nr_pwqs_to_flush))
                 complete(&pwq->wq->first_flusher->done);
+out_put:
+        put_pwq(pwq);
 }
 
 /**
@@ -1144,11 +1253,12 @@ static void insert_work(struct pool_workqueue *pwq, struct work_struct *work,
         /* we own @work, set data and link */
         set_work_pwq(work, pwq, extra_flags);
         list_add_tail(&work->entry, head);
+        get_pwq(pwq);
 
         /*
-         * Ensure either worker_sched_deactivated() sees the above
-         * list_add_tail() or we see zero nr_running to avoid workers
-         * lying around lazily while there are works to be processed.
+         * Ensure either wq_worker_sleeping() sees the above
+         * list_add_tail() or we see zero nr_running to avoid workers lying
+         * around lazily while there are works to be processed.
          */
         smp_mb();
 
@@ -1172,10 +1282,11 @@ static bool is_chained_work(struct workqueue_struct *wq)
         return worker && worker->current_pwq->wq == wq;
 }
 
-static void __queue_work(unsigned int cpu, struct workqueue_struct *wq,
+static void __queue_work(int cpu, struct workqueue_struct *wq,
                          struct work_struct *work)
 {
         struct pool_workqueue *pwq;
+        struct worker_pool *last_pool;
         struct list_head *worklist;
         unsigned int work_flags;
         unsigned int req_cpu = cpu;
@@ -1191,48 +1302,62 @@ static void __queue_work(unsigned int cpu, struct workqueue_struct *wq,
         debug_work_activate(work);
 
         /* if dying, only works from the same workqueue are allowed */
-        if (unlikely(wq->flags & WQ_DRAINING) &&
+        if (unlikely(wq->flags & __WQ_DRAINING) &&
             WARN_ON_ONCE(!is_chained_work(wq)))
                 return;
+retry:
+        if (req_cpu == WORK_CPU_UNBOUND)
+                cpu = raw_smp_processor_id();
 
-        /* determine the pwq to use */
-        if (!(wq->flags & WQ_UNBOUND)) {
-                struct worker_pool *last_pool;
-
-                if (cpu == WORK_CPU_UNBOUND)
-                        cpu = raw_smp_processor_id();
-
-                /*
-                 * It's multi cpu.  If @work was previously on a different
-                 * cpu, it might still be running there, in which case the
-                 * work needs to be queued on that cpu to guarantee
-                 * non-reentrancy.
-                 */
-                pwq = get_pwq(cpu, wq);
-                last_pool = get_work_pool(work);
+        /* pwq which will be used unless @work is executing elsewhere */
+        if (!(wq->flags & WQ_UNBOUND))
+                pwq = per_cpu_ptr(wq->cpu_pwqs, cpu);
+        else
+                pwq = unbound_pwq_by_node(wq, cpu_to_node(cpu));
 
-                if (last_pool && last_pool != pwq->pool) {
-                        struct worker *worker;
+        /*
+         * If @work was previously on a different pool, it might still be
+         * running there, in which case the work needs to be queued on that
+         * pool to guarantee non-reentrancy.
+         */
+        last_pool = get_work_pool(work);
+        if (last_pool && last_pool != pwq->pool) {
+                struct worker *worker;
 
-                        spin_lock(&last_pool->lock);
+                spin_lock(&last_pool->lock);
 
-                        worker = find_worker_executing_work(last_pool, work);
+                worker = find_worker_executing_work(last_pool, work);
 
-                        if (worker && worker->current_pwq->wq == wq) {
-                                pwq = get_pwq(last_pool->cpu, wq);
-                        } else {
-                                /* meh... not running there, queue here */
-                                spin_unlock(&last_pool->lock);
-                                spin_lock(&pwq->pool->lock);
-                        }
+                if (worker && worker->current_pwq->wq == wq) {
+                        pwq = worker->current_pwq;
                 } else {
+                        /* meh... not running there, queue here */
+                        spin_unlock(&last_pool->lock);
                         spin_lock(&pwq->pool->lock);
                 }
         } else {
-                pwq = get_pwq(WORK_CPU_UNBOUND, wq);
                 spin_lock(&pwq->pool->lock);
         }
 
+        /*
+         * pwq is determined and locked.  For unbound pools, we could have
+         * raced with pwq release and it could already be dead.  If its
+         * refcnt is zero, repeat pwq selection.  Note that pwqs never die
+         * without another pwq replacing it in the numa_pwq_tbl or while
+         * work items are executing on it, so the retrying is guaranteed to
+         * make forward-progress.
+         */
+        if (unlikely(!pwq->refcnt)) {
+                if (wq->flags & WQ_UNBOUND) {
+                        spin_unlock(&pwq->pool->lock);
+                        cpu_relax();
+                        goto retry;
+                }
+                /* oops */
+                WARN_ONCE(true, "workqueue: per-cpu pwq for %s on cpu%d has 0 refcnt",
+                          wq->name, cpu);
+        }
+
         /* pwq determined, queue */
         trace_workqueue_queue_work(req_cpu, pwq, work);
 
@@ -1287,22 +1412,6 @@ bool queue_work_on(int cpu, struct workqueue_struct *wq,
 }
 EXPORT_SYMBOL_GPL(queue_work_on);
 
-/**
- * queue_work - queue work on a workqueue
- * @wq: workqueue to use
- * @work: work to queue
- *
- * Returns %false if @work was already on a queue, %true otherwise.
- *
- * We queue the work to the CPU on which it was submitted, but if the CPU dies
- * it can be processed by another CPU.
- */
-bool queue_work(struct workqueue_struct *wq, struct work_struct *work)
-{
-        return queue_work_on(WORK_CPU_UNBOUND, wq, work);
-}
-EXPORT_SYMBOL_GPL(queue_work);
-
 void delayed_work_timer_fn(unsigned long __data)
 {
         struct delayed_work *dwork = (struct delayed_work *)__data;
@@ -1378,21 +1487,6 @@ bool queue_delayed_work_on(int cpu, struct workqueue_struct *wq,
 EXPORT_SYMBOL_GPL(queue_delayed_work_on);
 
 /**
- * queue_delayed_work - queue work on a workqueue after delay
- * @wq: workqueue to use
- * @dwork: delayable work to queue
- * @delay: number of jiffies to wait before queueing
- *
- * Equivalent to queue_delayed_work_on() but tries to use the local CPU.
- */
-bool queue_delayed_work(struct workqueue_struct *wq,
-                        struct delayed_work *dwork, unsigned long delay)
-{
-        return queue_delayed_work_on(WORK_CPU_UNBOUND, wq, dwork, delay);
-}
-EXPORT_SYMBOL_GPL(queue_delayed_work);
-
-/**
  * mod_delayed_work_on - modify delay of or queue a delayed work on specific CPU
  * @cpu: CPU number to execute work on
  * @wq: workqueue to use
@@ -1431,21 +1525,6 @@ bool mod_delayed_work_on(int cpu, struct workqueue_struct *wq,
 EXPORT_SYMBOL_GPL(mod_delayed_work_on);
 
 /**
- * mod_delayed_work - modify delay of or queue a delayed work
- * @wq: workqueue to use
- * @dwork: work to queue
- * @delay: number of jiffies to wait before queueing
- *
- * mod_delayed_work_on() on local CPU.
- */
-bool mod_delayed_work(struct workqueue_struct *wq, struct delayed_work *dwork,
-                      unsigned long delay)
-{
-        return mod_delayed_work_on(WORK_CPU_UNBOUND, wq, dwork, delay);
-}
-EXPORT_SYMBOL_GPL(mod_delayed_work);
-
-/**
  * worker_enter_idle - enter idle state
  * @worker: worker which is entering idle state
  *
@@ -1459,9 +1538,10 @@ static void worker_enter_idle(struct worker *worker)
 {
         struct worker_pool *pool = worker->pool;
 
-        BUG_ON(worker->flags & WORKER_IDLE);
-        BUG_ON(!list_empty(&worker->entry) &&
-               (worker->hentry.next || worker->hentry.pprev));
+        if (WARN_ON_ONCE(worker->flags & WORKER_IDLE) ||
+            WARN_ON_ONCE(!list_empty(&worker->entry) &&
+                         (worker->hentry.next || worker->hentry.pprev)))
+                return;
 
         /* can't use worker_set_flags(), also called from start_worker() */
         worker->flags |= WORKER_IDLE;
@@ -1498,22 +1578,25 @@ static void worker_leave_idle(struct worker *worker)
 {
         struct worker_pool *pool = worker->pool;
 
-        BUG_ON(!(worker->flags & WORKER_IDLE));
+        if (WARN_ON_ONCE(!(worker->flags & WORKER_IDLE)))
+                return;
         worker_clr_flags(worker, WORKER_IDLE);
         pool->nr_idle--;
         list_del_init(&worker->entry);
 }
 
 /**
- * worker_maybe_bind_and_lock - bind worker to its cpu if possible and lock pool
- * @worker: self
+ * worker_maybe_bind_and_lock - try to bind %current to worker_pool and lock it
+ * @pool: target worker_pool
+ *
+ * Bind %current to the cpu of @pool if it is associated and lock @pool.
  *
  * Works which are scheduled while the cpu is online must at least be
  * scheduled to a worker which is bound to the cpu so that if they are
  * flushed from cpu callbacks while cpu is going down, they are
  * guaranteed to execute on the cpu.
  *
- * This function is to be used by rogue workers and rescuers to bind
+ * This function is to be used by unbound workers and rescuers to bind
  * themselves to the target cpu and may race with cpu going down or
  * coming online.  kthread_bind() can't be used because it may put the
  * worker to already dead cpu and set_cpus_allowed_ptr() can't be used
@@ -1534,12 +1617,9 @@ static void worker_leave_idle(struct worker *worker)
  * %true if the associated pool is online (@worker is successfully
  * bound), %false if offline.
  */
-static bool worker_maybe_bind_and_lock(struct worker *worker)
+static bool worker_maybe_bind_and_lock(struct worker_pool *pool)
 __acquires(&pool->lock)
 {
-        struct worker_pool *pool = worker->pool;
-        struct task_struct *task = worker->task;
-
         while (true) {
                 /*
                  * The following call may fail, succeed or succeed
@@ -1548,14 +1628,13 @@ __acquires(&pool->lock)
                  * against POOL_DISASSOCIATED.
                  */
                 if (!(pool->flags & POOL_DISASSOCIATED))
-                        set_cpus_allowed_ptr(task, get_cpu_mask(pool->cpu));
+                        set_cpus_allowed_ptr(current, pool->attrs->cpumask);
 
                 spin_lock_irq(&pool->lock);
                 if (pool->flags & POOL_DISASSOCIATED)
                         return false;
-                if (task_cpu(task) == pool->cpu &&
-                    cpumask_equal(&current->cpus_allowed,
-                                  get_cpu_mask(pool->cpu)))
+                if (task_cpu(current) == pool->cpu &&
+                    cpumask_equal(&current->cpus_allowed, pool->attrs->cpumask))
                         return true;
                 spin_unlock_irq(&pool->lock);
 
@@ -1570,108 +1649,6 @@ __acquires(&pool->lock)
         }
 }
 
-/*
- * Rebind an idle @worker to its CPU.  worker_thread() will test
- * list_empty(@worker->entry) before leaving idle and call this function.
- */
-static void idle_worker_rebind(struct worker *worker)
-{
-        /* CPU may go down again inbetween, clear UNBOUND only on success */
-        if (worker_maybe_bind_and_lock(worker))
-                worker_clr_flags(worker, WORKER_UNBOUND);
-
-        /* rebind complete, become available again */
-        list_add(&worker->entry, &worker->pool->idle_list);
-        spin_unlock_irq(&worker->pool->lock);
-}
-
-/*
- * Function for @worker->rebind.work used to rebind unbound busy workers to
- * the associated cpu which is coming back online.  This is scheduled by
- * cpu up but can race with other cpu hotplug operations and may be
- * executed twice without intervening cpu down.
- */
-static void busy_worker_rebind_fn(struct work_struct *work)
-{
-        struct worker *worker = container_of(work, struct worker, rebind_work);
-
-        if (worker_maybe_bind_and_lock(worker))
-                worker_clr_flags(worker, WORKER_UNBOUND);
-
-        spin_unlock_irq(&worker->pool->lock);
-}
-
-/**
- * rebind_workers - rebind all workers of a pool to the associated CPU
- * @pool: pool of interest
- *
- * @pool->cpu is coming online.  Rebind all workers to the CPU.  Rebinding
- * is different for idle and busy ones.
- *
- * Idle ones will be removed from the idle_list and woken up.  They will
- * add themselves back after completing rebind.  This ensures that the
- * idle_list doesn't contain any unbound workers when re-bound busy workers
- * try to perform local wake-ups for concurrency management.
- *
- * Busy workers can rebind after they finish their current work items.
- * Queueing the rebind work item at the head of the scheduled list is
- * enough.  Note that nr_running will be properly bumped as busy workers
- * rebind.
- *
- * On return, all non-manager workers are scheduled for rebind - see
- * manage_workers() for the manager special case.  Any idle worker
- * including the manager will not appear on @idle_list until rebind is
- * complete, making local wake-ups safe.
- */
-static void rebind_workers(struct worker_pool *pool)
-{
-        struct worker *worker, *n;
-        int i;
-
-        lockdep_assert_held(&pool->assoc_mutex);
-        lockdep_assert_held(&pool->lock);
-
-        /* dequeue and kick idle ones */
-        list_for_each_entry_safe(worker, n, &pool->idle_list, entry) {
-                /*
-                 * idle workers should be off @pool->idle_list until rebind
-                 * is complete to avoid receiving premature local wake-ups.
-                 */
-                list_del_init(&worker->entry);
-
-                /*
-                 * worker_thread() will see the above dequeuing and call
-                 * idle_worker_rebind().
-                 */
-                wake_up_process(worker->task);
-        }
-
-        /* rebind busy workers */
-        for_each_busy_worker(worker, i, pool) {
-                struct work_struct *rebind_work = &worker->rebind_work;
-                struct workqueue_struct *wq;
-
-                if (test_and_set_bit(WORK_STRUCT_PENDING_BIT,
-                                     work_data_bits(rebind_work)))
-                        continue;
-
-                debug_work_activate(rebind_work);
-
-                /*
-                 * wq doesn't really matter but let's keep @worker->pool
-                 * and @pwq->pool consistent for sanity.
-                 */
-                if (std_worker_pool_pri(worker->pool))
-                        wq = system_highpri_wq;
-                else
-                        wq = system_wq;
-
-                insert_work(get_pwq(pool->cpu, wq), rebind_work,
-                            worker->scheduled.next,
-                            work_color_to_flags(WORK_NO_COLOR));
-        }
-}
-
 static struct worker *alloc_worker(void)
 {
         struct worker *worker;
@@ -1680,7 +1657,6 @@ static struct worker *alloc_worker(void)
         if (worker) {
                 INIT_LIST_HEAD(&worker->entry);
                 INIT_LIST_HEAD(&worker->scheduled);
-                INIT_WORK(&worker->rebind_work, busy_worker_rebind_fn);
                 /* on creation a worker is in !idle && prep state */
                 worker->flags = WORKER_PREP;
         }
@@ -1703,18 +1679,25 @@ static struct worker *alloc_worker(void)
  */
 static struct worker *create_worker(struct worker_pool *pool)
 {
-        const char *pri = std_worker_pool_pri(pool) ? "H" : "";
         struct worker *worker = NULL;
         int id = -1;
+        char id_buf[16];
 
+        lockdep_assert_held(&pool->manager_mutex);
+
+        /*
+         * ID is needed to determine kthread name.  Allocate ID first
+         * without installing the pointer.
+         */
+        idr_preload(GFP_KERNEL);
         spin_lock_irq(&pool->lock);
-        while (ida_get_new(&pool->worker_ida, &id)) {
-                spin_unlock_irq(&pool->lock);
-                if (!ida_pre_get(&pool->worker_ida, GFP_KERNEL))
-                        goto fail;
-                spin_lock_irq(&pool->lock);
-        }
+
+        id = idr_alloc(&pool->worker_idr, NULL, 0, 0, GFP_NOWAIT);
+
         spin_unlock_irq(&pool->lock);
+        idr_preload_end();
+        if (id < 0)
+                goto fail;
 
         worker = alloc_worker();
         if (!worker)
@@ -1723,40 +1706,46 @@ static struct worker *create_worker(struct worker_pool *pool)
         worker->pool = pool;
         worker->id = id;
 
-        if (pool->cpu != WORK_CPU_UNBOUND)
-                worker->task = kthread_create_on_node(worker_thread,
-                                        worker, cpu_to_node(pool->cpu),
-                                        "kworker/%u:%d%s", pool->cpu, id, pri);
+        if (pool->cpu >= 0)
+                snprintf(id_buf, sizeof(id_buf), "%d:%d%s", pool->cpu, id,
+                         pool->attrs->nice < 0  ? "H" : "");
         else
-                worker->task = kthread_create(worker_thread, worker,
-                                              "kworker/u:%d%s", id, pri);
+                snprintf(id_buf, sizeof(id_buf), "u%d:%d", pool->id, id);
+
+        worker->task = kthread_create_on_node(worker_thread, worker, pool->node,
+                                              "kworker/%s", id_buf);
         if (IS_ERR(worker->task))
                 goto fail;
 
-        if (std_worker_pool_pri(pool))
-                set_user_nice(worker->task, HIGHPRI_NICE_LEVEL);
+        /*
+         * set_cpus_allowed_ptr() will fail if the cpumask doesn't have any
+         * online CPUs.  It'll be re-applied when any of the CPUs come up.
+         */
+        set_user_nice(worker->task, pool->attrs->nice);
+        set_cpus_allowed_ptr(worker->task, pool->attrs->cpumask);
+
+        /* prevent userland from meddling with cpumask of workqueue workers */
+        worker->task->flags |= PF_NO_SETAFFINITY;
 
         /*
-         * Determine CPU binding of the new worker depending on
-         * %POOL_DISASSOCIATED.  The caller is responsible for ensuring the
-         * flag remains stable across this function.  See the comments
-         * above the flag definition for details.
-         *
-         * As an unbound worker may later become a regular one if CPU comes
-         * online, make sure every worker has %PF_THREAD_BOUND set.
+         * The caller is responsible for ensuring %POOL_DISASSOCIATED
+         * remains stable across this function.  See the comments above the
+         * flag definition for details.
          */
-        if (!(pool->flags & POOL_DISASSOCIATED)) {
-                kthread_bind(worker->task, pool->cpu);
-        } else {
-                worker->task->flags |= PF_THREAD_BOUND;
+        if (pool->flags & POOL_DISASSOCIATED)
                 worker->flags |= WORKER_UNBOUND;
-        }
+
+        /* successful, commit the pointer to idr */
+        spin_lock_irq(&pool->lock);
+        idr_replace(&pool->worker_idr, worker, worker->id);
+        spin_unlock_irq(&pool->lock);
 
         return worker;
+
 fail:
         if (id >= 0) {
                 spin_lock_irq(&pool->lock);
-                ida_remove(&pool->worker_ida, id);
+                idr_remove(&pool->worker_idr, id);
                 spin_unlock_irq(&pool->lock);
         }
         kfree(worker);
@@ -1781,6 +1770,30 @@ static void start_worker(struct worker *worker)
 }
 
 /**
+ * create_and_start_worker - create and start a worker for a pool
+ * @pool: the target pool
+ *
+ * Grab the managership of @pool and create and start a new worker for it.
+ */
+static int create_and_start_worker(struct worker_pool *pool)
+{
+        struct worker *worker;
+
+        mutex_lock(&pool->manager_mutex);
+
+        worker = create_worker(pool);
+        if (worker) {
+                spin_lock_irq(&pool->lock);
+                start_worker(worker);
+                spin_unlock_irq(&pool->lock);
+        }
+
+        mutex_unlock(&pool->manager_mutex);
+
+        return worker ? 0 : -ENOMEM;
+}
+
+/**
  * destroy_worker - destroy a workqueue worker
  * @worker: worker to be destroyed
  *
@@ -1792,11 +1805,14 @@ static void start_worker(struct worker *worker)
 static void destroy_worker(struct worker *worker)
 {
         struct worker_pool *pool = worker->pool;
-        int id = worker->id;
+
+        lockdep_assert_held(&pool->manager_mutex);
+        lockdep_assert_held(&pool->lock);
 
         /* sanity check frenzy */
-        BUG_ON(worker->current_work);
-        BUG_ON(!list_empty(&worker->scheduled));
+        if (WARN_ON(worker->current_work) ||
+            WARN_ON(!list_empty(&worker->scheduled)))
+                return;
 
         if (worker->flags & WORKER_STARTED)
                 pool->nr_workers--;
@@ -1806,13 +1822,14 @@ static void destroy_worker(struct worker *worker)
         list_del_init(&worker->entry);
         worker->flags |= WORKER_DIE;
 
+        idr_remove(&pool->worker_idr, worker->id);
+
         spin_unlock_irq(&pool->lock);
 
         kthread_stop(worker->task);
         kfree(worker);
 
         spin_lock_irq(&pool->lock);
-        ida_remove(&pool->worker_ida, id);
 }
 
 static void idle_worker_timeout(unsigned long __pool)
@@ -1841,23 +1858,21 @@ static void idle_worker_timeout(unsigned long __pool)
         spin_unlock_irq(&pool->lock);
 }
 
-static bool send_mayday(struct work_struct *work)
+static void send_mayday(struct work_struct *work)
 {
         struct pool_workqueue *pwq = get_work_pwq(work);
         struct workqueue_struct *wq = pwq->wq;
-        unsigned int cpu;
 
-        if (!(wq->flags & WQ_RESCUER))
-                return false;
+        lockdep_assert_held(&wq_mayday_lock);
+
+        if (!wq->rescuer)
+                return;
 
         /* mayday mayday mayday */
-        cpu = pwq->pool->cpu;
-        /* WORK_CPU_UNBOUND can't be set in cpumask, use cpu 0 instead */
-        if (cpu == WORK_CPU_UNBOUND)
-                cpu = 0;
-        if (!mayday_test_and_set_cpu(cpu, wq->mayday_mask))
+        if (list_empty(&pwq->mayday_node)) {
+                list_add_tail(&pwq->mayday_node, &wq->maydays);
                 wake_up_process(wq->rescuer->task);
-        return true;
+        }
 }
 
 static void pool_mayday_timeout(unsigned long __pool)
@@ -1865,7 +1880,8 @@ static void pool_mayday_timeout(unsigned long __pool)
         struct worker_pool *pool = (void *)__pool;
         struct work_struct *work;
 
-        spin_lock_irq(&pool->lock);
+        spin_lock_irq(&wq_mayday_lock);         /* for wq->maydays */
+        spin_lock(&pool->lock);
 
         if (need_to_create_worker(pool)) {
                 /*
@@ -1878,7 +1894,8 @@ static void pool_mayday_timeout(unsigned long __pool)
                         send_mayday(work);
         }
 
-        spin_unlock_irq(&pool->lock);
+        spin_unlock(&pool->lock);
+        spin_unlock_irq(&wq_mayday_lock);
 
         mod_timer(&pool->mayday_timer, jiffies + MAYDAY_INTERVAL);
 }
@@ -1893,8 +1910,8 @@ static void pool_mayday_timeout(unsigned long __pool)
  * sent to all rescuers with works scheduled on @pool to resolve
  * possible allocation deadlock.
  *
- * On return, need_to_create_worker() is guaranteed to be false and
- * may_start_working() true.
+ * On return, need_to_create_worker() is guaranteed to be %false and
+ * may_start_working() %true.
  *
  * LOCKING:
  * spin_lock_irq(pool->lock) which may be released and regrabbed
@@ -1902,7 +1919,7 @@ static void pool_mayday_timeout(unsigned long __pool)
  * manager.
  *
  * RETURNS:
- * false if no action was taken and pool->lock stayed locked, true
+ * %false if no action was taken and pool->lock stayed locked, %true
  * otherwise.
  */
 static bool maybe_create_worker(struct worker_pool *pool)
@@ -1925,7 +1942,8 @@ restart:
                         del_timer_sync(&pool->mayday_timer);
                         spin_lock_irq(&pool->lock);
                         start_worker(worker);
-                        BUG_ON(need_to_create_worker(pool));
+                        if (WARN_ON_ONCE(need_to_create_worker(pool)))
+                                goto restart;
                         return true;
                 }
 
@@ -1958,7 +1976,7 @@ restart:
  * multiple times.  Called only from manager.
  *
  * RETURNS:
- * false if no action was taken and pool->lock stayed locked, true
+ * %false if no action was taken and pool->lock stayed locked, %true
  * otherwise.
  */
 static bool maybe_destroy_workers(struct worker_pool *pool)
@@ -2009,42 +2027,37 @@ static bool manage_workers(struct worker *worker)
         struct worker_pool *pool = worker->pool;
         bool ret = false;
 
-        if (pool->flags & POOL_MANAGING_WORKERS)
+        /*
+         * Managership is governed by two mutexes - manager_arb and
+         * manager_mutex.  manager_arb handles arbitration of manager role.
+         * Anyone who successfully grabs manager_arb wins the arbitration
+         * and becomes the manager.  mutex_trylock() on pool->manager_arb
+         * failure while holding pool->lock reliably indicates that someone
+         * else is managing the pool and the worker which failed trylock
+         * can proceed to executing work items.  This means that anyone
+         * grabbing manager_arb is responsible for actually performing
+         * manager duties.  If manager_arb is grabbed and released without
+         * actual management, the pool may stall indefinitely.
+         *
+         * manager_mutex is used for exclusion of actual management
+         * operations.  The holder of manager_mutex can be sure that none
+         * of management operations, including creation and destruction of
+         * workers, won't take place until the mutex is released.  Because
+         * manager_mutex doesn't interfere with manager role arbitration,
+         * it is guaranteed that the pool's management, while may be
+         * delayed, won't be disturbed by someone else grabbing
+         * manager_mutex.
+         */
+        if (!mutex_trylock(&pool->manager_arb))
                 return ret;
 
-        pool->flags |= POOL_MANAGING_WORKERS;
-
         /*
-         * To simplify both worker management and CPU hotplug, hold off
-         * management while hotplug is in progress.  CPU hotplug path can't
-         * grab %POOL_MANAGING_WORKERS to achieve this because that can
-         * lead to idle worker depletion (all become busy thinking someone
-         * else is managing) which in turn can result in deadlock under
-         * extreme circumstances.  Use @pool->assoc_mutex to synchronize
-         * manager against CPU hotplug.
-         *
-         * assoc_mutex would always be free unless CPU hotplug is in
-         * progress.  trylock first without dropping @pool->lock.
+         * With manager arbitration won, manager_mutex would be free in
+         * most cases.  trylock first without dropping @pool->lock.
          */
-        if (unlikely(!mutex_trylock(&pool->assoc_mutex))) {
+        if (unlikely(!mutex_trylock(&pool->manager_mutex))) {
                 spin_unlock_irq(&pool->lock);
-                mutex_lock(&pool->assoc_mutex);
-                /*
-                 * CPU hotplug could have happened while we were waiting
-                 * for assoc_mutex.  Hotplug itself can't handle us
-                 * because manager isn't either on idle or busy list, and
-                 * @pool's state and ours could have deviated.
-                 *
-                 * As hotplug is now excluded via assoc_mutex, we can
-                 * simply try to bind.  It will succeed or fail depending
-                 * on @pool's current state.  Try it and adjust
-                 * %WORKER_UNBOUND accordingly.
-                 */
-                if (worker_maybe_bind_and_lock(worker))
-                        worker->flags &= ~WORKER_UNBOUND;
-                else
-                        worker->flags |= WORKER_UNBOUND;
-
+                mutex_lock(&pool->manager_mutex);
                 ret = true;
         }
 
@@ -2057,8 +2070,8 @@ static bool manage_workers(struct worker *worker)
         ret |= maybe_destroy_workers(pool);
         ret |= maybe_create_worker(pool);
 
-        pool->flags &= ~POOL_MANAGING_WORKERS;
-        mutex_unlock(&pool->assoc_mutex);
+        mutex_unlock(&pool->manager_mutex);
+        mutex_unlock(&pool->manager_arb);
         return ret;
 }
 
@@ -2212,11 +2225,11 @@ static void process_scheduled_works(struct worker *worker)
  * worker_thread - the worker thread function
  * @__worker: self
  *
- * The worker thread function.  There are NR_CPU_WORKER_POOLS dynamic pools
- * of these per each cpu.  These workers process all works regardless of
- * their specific target workqueue.  The only exception is works which
- * belong to workqueues with a rescuer which will be explained in
- * rescuer_thread().
+ * The worker thread function.  All workers belong to a worker_pool -
+ * either a per-cpu one or dynamic unbound one.  These workers process all
+ * work items regardless of their specific target workqueue.  The only
+ * exception is work items which belong to workqueues with a rescuer which
+ * will be explained in rescuer_thread().
  */
 static int worker_thread(void *__worker)
 {
@@ -2228,19 +2241,12 @@ static int worker_thread(void *__worker)
 woke_up:
         spin_lock_irq(&pool->lock);
 
-        /* we are off idle list if destruction or rebind is requested */
-        if (unlikely(list_empty(&worker->entry))) {
+        /* am I supposed to die? */
+        if (unlikely(worker->flags & WORKER_DIE)) {
                 spin_unlock_irq(&pool->lock);
-
-                /* if DIE is set, destruction is requested */
-                if (worker->flags & WORKER_DIE) {
-                        worker->task->flags &= ~PF_WQ_WORKER;
-                        return 0;
-                }
-
-                /* otherwise, rebind */
-                idle_worker_rebind(worker);
-                goto woke_up;
+                WARN_ON_ONCE(!list_empty(&worker->entry));
+                worker->task->flags &= ~PF_WQ_WORKER;
+                return 0;
         }
 
         worker_leave_idle(worker);
@@ -2258,14 +2264,16 @@ recheck:
          * preparing to process a work or actually processing it.
          * Make sure nobody diddled with it while I was sleeping.
          */
-        BUG_ON(!list_empty(&worker->scheduled));
+        WARN_ON_ONCE(!list_empty(&worker->scheduled));
 
         /*
-         * When control reaches this point, we're guaranteed to have
-         * at least one idle worker or that someone else has already
-         * assumed the manager role.
+         * Finish PREP stage.  We're guaranteed to have at least one idle
+         * worker or that someone else has already assumed the manager
+         * role.  This is where @worker starts participating in concurrency
+         * management if applicable and concurrency management is restored
+         * after being rebound.  See rebind_workers() for details.
          */
-        worker_clr_flags(worker, WORKER_PREP);
+        worker_clr_flags(worker, WORKER_PREP | WORKER_REBOUND);
 
         do {
                 struct work_struct *work =
@@ -2307,7 +2315,7 @@ sleep:
  * @__rescuer: self
  *
  * Workqueue rescuer thread function.  There's one rescuer for each
- * workqueue which has WQ_RESCUER set.
+ * workqueue which has WQ_MEM_RECLAIM set.
  *
  * Regular work processing on a pool may block trying to create a new
  * worker which uses GFP_KERNEL allocation which has slight chance of
@@ -2326,8 +2334,6 @@ static int rescuer_thread(void *__rescuer)
         struct worker *rescuer = __rescuer;
         struct workqueue_struct *wq = rescuer->rescue_wq;
         struct list_head *scheduled = &rescuer->scheduled;
-        bool is_unbound = wq->flags & WQ_UNBOUND;
-        unsigned int cpu;
 
         set_user_nice(current, RESCUER_NICE_LEVEL);
 
@@ -2345,28 +2351,29 @@ repeat:
                 return 0;
         }
 
-        /*
-         * See whether any cpu is asking for help.  Unbounded
-         * workqueues use cpu 0 in mayday_mask for CPU_UNBOUND.
-         */
-        for_each_mayday_cpu(cpu, wq->mayday_mask) {
-                unsigned int tcpu = is_unbound ? WORK_CPU_UNBOUND : cpu;
-                struct pool_workqueue *pwq = get_pwq(tcpu, wq);
+        /* see whether any pwq is asking for help */
+        spin_lock_irq(&wq_mayday_lock);
+
+        while (!list_empty(&wq->maydays)) {
+                struct pool_workqueue *pwq = list_first_entry(&wq->maydays,
+                                        struct pool_workqueue, mayday_node);
                 struct worker_pool *pool = pwq->pool;
                 struct work_struct *work, *n;
 
                 __set_current_state(TASK_RUNNING);
-                mayday_clear_cpu(cpu, wq->mayday_mask);
+                list_del_init(&pwq->mayday_node);
+
+                spin_unlock_irq(&wq_mayday_lock);
 
                 /* migrate to the target cpu if possible */
+                worker_maybe_bind_and_lock(pool);
                 rescuer->pool = pool;
-                worker_maybe_bind_and_lock(rescuer);
 
                 /*
                  * Slurp in all works issued via this workqueue and
                  * process'em.
                  */
-                BUG_ON(!list_empty(&rescuer->scheduled));
+                WARN_ON_ONCE(!list_empty(&rescuer->scheduled));
                 list_for_each_entry_safe(work, n, &pool->worklist, entry)
                         if (get_work_pwq(work) == pwq)
                                 move_linked_works(work, scheduled, &n);
@@ -2381,9 +2388,13 @@ repeat:
                 if (keep_working(pool))
                         wake_up_worker(pool);
 
-                spin_unlock_irq(&pool->lock);
+                rescuer->pool = NULL;
+                spin_unlock(&pool->lock);
+                spin_lock(&wq_mayday_lock);
         }
 
+        spin_unlock_irq(&wq_mayday_lock);
+
         /* rescuers should never participate in concurrency management */
         WARN_ON_ONCE(!(rescuer->flags & WORKER_NOT_RUNNING));
         schedule();
@@ -2487,7 +2498,7 @@ static void insert_wq_barrier(struct pool_workqueue *pwq,
  * advanced to @work_color.
  *
  * CONTEXT:
- * mutex_lock(wq->flush_mutex).
+ * mutex_lock(wq->mutex).
  *
  * RETURNS:
  * %true if @flush_color >= 0 and there's something to flush.  %false
@@ -2497,21 +2508,20 @@ static bool flush_workqueue_prep_pwqs(struct workqueue_struct *wq,
                                       int flush_color, int work_color)
 {
         bool wait = false;
-        unsigned int cpu;
+        struct pool_workqueue *pwq;
 
         if (flush_color >= 0) {
-                BUG_ON(atomic_read(&wq->nr_pwqs_to_flush));
+                WARN_ON_ONCE(atomic_read(&wq->nr_pwqs_to_flush));
                 atomic_set(&wq->nr_pwqs_to_flush, 1);
         }
 
-        for_each_pwq_cpu(cpu, wq) {
-                struct pool_workqueue *pwq = get_pwq(cpu, wq);
+        for_each_pwq(pwq, wq) {
                 struct worker_pool *pool = pwq->pool;
 
                 spin_lock_irq(&pool->lock);
 
                 if (flush_color >= 0) {
-                        BUG_ON(pwq->flush_color != -1);
+                        WARN_ON_ONCE(pwq->flush_color != -1);
 
                         if (pwq->nr_in_flight[flush_color]) {
                                 pwq->flush_color = flush_color;
@@ -2521,7 +2531,7 @@ static bool flush_workqueue_prep_pwqs(struct workqueue_struct *wq,
                 }
 
                 if (work_color >= 0) {
-                        BUG_ON(work_color != work_next_color(pwq->work_color));
+                        WARN_ON_ONCE(work_color != work_next_color(pwq->work_color));
                         pwq->work_color = work_color;
                 }
 
@@ -2538,11 +2548,8 @@ static bool flush_workqueue_prep_pwqs(struct workqueue_struct *wq,
  * flush_workqueue - ensure that any scheduled work has run to completion.
  * @wq: workqueue to flush
  *
- * Forces execution of the workqueue and blocks until its completion.
- * This is typically used in driver shutdown handlers.
- *
- * We sleep until all works which were queued on entry have been handled,
- * but we are not livelocked by new incoming ones.
+ * This function sleeps until all work items which were queued on entry
+ * have finished execution, but it is not livelocked by new incoming ones.
  */
 void flush_workqueue(struct workqueue_struct *wq)
 {
@@ -2556,7 +2563,7 @@ void flush_workqueue(struct workqueue_struct *wq)
         lock_map_acquire(&wq->lockdep_map);
         lock_map_release(&wq->lockdep_map);
 
-        mutex_lock(&wq->flush_mutex);
+        mutex_lock(&wq->mutex);
 
         /*
          * Start-to-wait phase
@@ -2569,13 +2576,13 @@ void flush_workqueue(struct workqueue_struct *wq)
                  * becomes our flush_color and work_color is advanced
                  * by one.
                  */
-                BUG_ON(!list_empty(&wq->flusher_overflow));
+                WARN_ON_ONCE(!list_empty(&wq->flusher_overflow));
                 this_flusher.flush_color = wq->work_color;
                 wq->work_color = next_color;
 
                 if (!wq->first_flusher) {
                         /* no flush in progress, become the first flusher */
-                        BUG_ON(wq->flush_color != this_flusher.flush_color);
+                        WARN_ON_ONCE(wq->flush_color != this_flusher.flush_color);
 
                         wq->first_flusher = &this_flusher;
 
@@ -2588,7 +2595,7 @@ void flush_workqueue(struct workqueue_struct *wq)
                         }
                 } else {
                         /* wait in queue */
-                        BUG_ON(wq->flush_color == this_flusher.flush_color);
+                        WARN_ON_ONCE(wq->flush_color == this_flusher.flush_color);
                         list_add_tail(&this_flusher.list, &wq->flusher_queue);
                         flush_workqueue_prep_pwqs(wq, -1, wq->work_color);
                 }
@@ -2601,7 +2608,7 @@ void flush_workqueue(struct workqueue_struct *wq)
                 list_add_tail(&this_flusher.list, &wq->flusher_overflow);
         }
 
-        mutex_unlock(&wq->flush_mutex);
+        mutex_unlock(&wq->mutex);
 
         wait_for_completion(&this_flusher.done);
 
@@ -2614,7 +2621,7 @@ void flush_workqueue(struct workqueue_struct *wq)
         if (wq->first_flusher != &this_flusher)
                 return;
 
-        mutex_lock(&wq->flush_mutex);
+        mutex_lock(&wq->mutex);
 
         /* we might have raced, check again with mutex held */
         if (wq->first_flusher != &this_flusher)
@@ -2622,8 +2629,8 @@ void flush_workqueue(struct workqueue_struct *wq)
 
         wq->first_flusher = NULL;
 
-        BUG_ON(!list_empty(&this_flusher.list));
-        BUG_ON(wq->flush_color != this_flusher.flush_color);
+        WARN_ON_ONCE(!list_empty(&this_flusher.list));
+        WARN_ON_ONCE(wq->flush_color != this_flusher.flush_color);
 
         while (true) {
                 struct wq_flusher *next, *tmp;
@@ -2636,8 +2643,8 @@ void flush_workqueue(struct workqueue_struct *wq)
                         complete(&next->done);
                 }
 
-                BUG_ON(!list_empty(&wq->flusher_overflow) &&
-                       wq->flush_color != work_next_color(wq->work_color));
+                WARN_ON_ONCE(!list_empty(&wq->flusher_overflow) &&
+                             wq->flush_color != work_next_color(wq->work_color));
 
                 /* this flush_color is finished, advance by one */
                 wq->flush_color = work_next_color(wq->flush_color);
@@ -2661,7 +2668,7 @@ void flush_workqueue(struct workqueue_struct *wq)
                 }
 
                 if (list_empty(&wq->flusher_queue)) {
-                        BUG_ON(wq->flush_color != wq->work_color);
+                        WARN_ON_ONCE(wq->flush_color != wq->work_color);
                         break;
                 }
 
@@ -2669,8 +2676,8 @@ void flush_workqueue(struct workqueue_struct *wq)
                  * Need to flush more colors.  Make the next flusher
                  * the new first flusher and arm pwqs.
                  */
-                BUG_ON(wq->flush_color == wq->work_color);
-                BUG_ON(wq->flush_color != next->flush_color);
+                WARN_ON_ONCE(wq->flush_color == wq->work_color);
+                WARN_ON_ONCE(wq->flush_color != next->flush_color);
 
                 list_del_init(&next->list);
                 wq->first_flusher = next;
@@ -2686,7 +2693,7 @@ void flush_workqueue(struct workqueue_struct *wq)
         }
 
 out_unlock:
-        mutex_unlock(&wq->flush_mutex);
+        mutex_unlock(&wq->mutex);
 }
 EXPORT_SYMBOL_GPL(flush_workqueue);
 
@@ -2704,22 +2711,23 @@ EXPORT_SYMBOL_GPL(flush_workqueue);
 void drain_workqueue(struct workqueue_struct *wq)
 {
         unsigned int flush_cnt = 0;
-        unsigned int cpu;
+        struct pool_workqueue *pwq;
 
         /*
          * __queue_work() needs to test whether there are drainers, is much
          * hotter than drain_workqueue() and already looks at @wq->flags.
-         * Use WQ_DRAINING so that queue doesn't have to check nr_drainers.
+         * Use __WQ_DRAINING so that queue doesn't have to check nr_drainers.
          */
-        spin_lock(&workqueue_lock);
+        mutex_lock(&wq->mutex);
         if (!wq->nr_drainers++)
-                wq->flags |= WQ_DRAINING;
-        spin_unlock(&workqueue_lock);
+                wq->flags |= __WQ_DRAINING;
+        mutex_unlock(&wq->mutex);
 reflush:
         flush_workqueue(wq);
 
-        for_each_pwq_cpu(cpu, wq) {
-                struct pool_workqueue *pwq = get_pwq(cpu, wq);
+        mutex_lock(&wq->mutex);
+
+        for_each_pwq(pwq, wq) {
                 bool drained;
 
                 spin_lock_irq(&pwq->pool->lock);
@@ -2731,15 +2739,16 @@ reflush:
 
                 if (++flush_cnt == 10 ||
                     (flush_cnt % 100 == 0 && flush_cnt <= 1000))
-                        pr_warn("workqueue %s: flush on destruction isn't complete after %u tries\n",
+                        pr_warn("workqueue %s: drain_workqueue() isn't complete after %u tries\n",
                                 wq->name, flush_cnt);
+
+                mutex_unlock(&wq->mutex);
                 goto reflush;
         }
 
-        spin_lock(&workqueue_lock);
         if (!--wq->nr_drainers)
-                wq->flags &= ~WQ_DRAINING;
-        spin_unlock(&workqueue_lock);
+                wq->flags &= ~__WQ_DRAINING;
+        mutex_unlock(&wq->mutex);
 }
 EXPORT_SYMBOL_GPL(drain_workqueue);
 
@@ -2750,11 +2759,15 @@ static bool start_flush_work(struct work_struct *work, struct wq_barrier *barr)
         struct pool_workqueue *pwq;
 
         might_sleep();
+
+        local_irq_disable();
         pool = get_work_pool(work);
-        if (!pool)
+        if (!pool) {
+                local_irq_enable();
                 return false;
+        }
 
-        spin_lock_irq(&pool->lock);
+        spin_lock(&pool->lock);
         /* see the comment in try_to_grab_pending() with the same code */
         pwq = get_work_pwq(work);
         if (pwq) {
@@ -2776,7 +2789,7 @@ static bool start_flush_work(struct work_struct *work, struct wq_barrier *barr)
          * flusher is not running on the same workqueue by verifying write
          * access.
          */
-        if (pwq->wq->saved_max_active == 1 || pwq->wq->flags & WQ_RESCUER)
+        if (pwq->wq->saved_max_active == 1 || pwq->wq->rescuer)
                 lock_map_acquire(&pwq->wq->lockdep_map);
         else
                 lock_map_acquire_read(&pwq->wq->lockdep_map);
@@ -2933,66 +2946,6 @@ bool cancel_delayed_work_sync(struct delayed_work *dwork)
 EXPORT_SYMBOL(cancel_delayed_work_sync);
 
 /**
- * schedule_work_on - put work task on a specific cpu
- * @cpu: cpu to put the work task on
- * @work: job to be done
- *
- * This puts a job on a specific cpu
- */
-bool schedule_work_on(int cpu, struct work_struct *work)
-{
-        return queue_work_on(cpu, system_wq, work);
-}
-EXPORT_SYMBOL(schedule_work_on);
-
-/**
- * schedule_work - put work task in global workqueue
- * @work: job to be done
- *
- * Returns %false if @work was already on the kernel-global workqueue and
- * %true otherwise.
- *
- * This puts a job in the kernel-global workqueue if it was not already
- * queued and leaves it in the same position on the kernel-global
- * workqueue otherwise.
- */
-bool schedule_work(struct work_struct *work)
-{
-        return queue_work(system_wq, work);
-}
-EXPORT_SYMBOL(schedule_work);
-
-/**
- * schedule_delayed_work_on - queue work in global workqueue on CPU after delay
- * @cpu: cpu to use
- * @dwork: job to be done
- * @delay: number of jiffies to wait
- *
- * After waiting for a given time this puts a job in the kernel-global
- * workqueue on the specified CPU.
- */
-bool schedule_delayed_work_on(int cpu, struct delayed_work *dwork,
-                              unsigned long delay)
-{
-        return queue_delayed_work_on(cpu, system_wq, dwork, delay);
-}
-EXPORT_SYMBOL(schedule_delayed_work_on);
-
-/**
- * schedule_delayed_work - put work task in global workqueue after delay
- * @dwork: job to be done
- * @delay: number of jiffies to wait or 0 for immediate execution
- *
- * After waiting for a given time this puts a job in the kernel-global
- * workqueue.
- */
-bool schedule_delayed_work(struct delayed_work *dwork, unsigned long delay)
-{
-        return queue_delayed_work(system_wq, dwork, delay);
-}
-EXPORT_SYMBOL(schedule_delayed_work);
-
-/**
  * schedule_on_each_cpu - execute a function synchronously on each online CPU
  * @func: the function to call
  *
@@ -3085,51 +3038,1025 @@ int execute_in_process_context(work_func_t fn, struct execute_work *ew)
 }
 EXPORT_SYMBOL_GPL(execute_in_process_context);
 
-int keventd_up(void)
+#ifdef CONFIG_SYSFS
+/*
+ * Workqueues with WQ_SYSFS flag set is visible to userland via
+ * /sys/bus/workqueue/devices/WQ_NAME.  All visible workqueues have the
+ * following attributes.
+ *
+ *  per_cpu     RO bool : whether the workqueue is per-cpu or unbound
+ *  max_active  RW int  : maximum number of in-flight work items
+ *
+ * Unbound workqueues have the following extra attributes.
+ *
+ *  id          RO int  : the associated pool ID
+ *  nice        RW int  : nice value of the workers
+ *  cpumask     RW mask : bitmask of allowed CPUs for the workers
+ */
+struct wq_device {
+        struct workqueue_struct         *wq;
+        struct device                   dev;
+};
+
+static struct workqueue_struct *dev_to_wq(struct device *dev)
+{
+        struct wq_device *wq_dev = container_of(dev, struct wq_device, dev);
+
+        return wq_dev->wq;
+}
+
+static ssize_t wq_per_cpu_show(struct device *dev,
+                               struct device_attribute *attr, char *buf)
+{
+        struct workqueue_struct *wq = dev_to_wq(dev);
+
+        return scnprintf(buf, PAGE_SIZE, "%d\n", (bool)!(wq->flags & WQ_UNBOUND));
+}
+
+static ssize_t wq_max_active_show(struct device *dev,
+                                  struct device_attribute *attr, char *buf)
 {
-        return system_wq != NULL;
+        struct workqueue_struct *wq = dev_to_wq(dev);
+
+        return scnprintf(buf, PAGE_SIZE, "%d\n", wq->saved_max_active);
 }
 
-static int alloc_pwqs(struct workqueue_struct *wq)
+static ssize_t wq_max_active_store(struct device *dev,
+                                   struct device_attribute *attr,
+                                   const char *buf, size_t count)
 {
+        struct workqueue_struct *wq = dev_to_wq(dev);
+        int val;
+
+        if (sscanf(buf, "%d", &val) != 1 || val <= 0)
+                return -EINVAL;
+
+        workqueue_set_max_active(wq, val);
+        return count;
+}
+
+static struct device_attribute wq_sysfs_attrs[] = {
+        __ATTR(per_cpu, 0444, wq_per_cpu_show, NULL),
+        __ATTR(max_active, 0644, wq_max_active_show, wq_max_active_store),
+        __ATTR_NULL,
+};
+
+static ssize_t wq_pool_ids_show(struct device *dev,
+                                struct device_attribute *attr, char *buf)
+{
+        struct workqueue_struct *wq = dev_to_wq(dev);
+        const char *delim = "";
+        int node, written = 0;
+
+        rcu_read_lock_sched();
+        for_each_node(node) {
+                written += scnprintf(buf + written, PAGE_SIZE - written,
+                                     "%s%d:%d", delim, node,
+                                     unbound_pwq_by_node(wq, node)->pool->id);
+                delim = " ";
+        }
+        written += scnprintf(buf + written, PAGE_SIZE - written, "\n");
+        rcu_read_unlock_sched();
+
+        return written;
+}
+
+static ssize_t wq_nice_show(struct device *dev, struct device_attribute *attr,
+                            char *buf)
+{
+        struct workqueue_struct *wq = dev_to_wq(dev);
+        int written;
+
+        mutex_lock(&wq->mutex);
+        written = scnprintf(buf, PAGE_SIZE, "%d\n", wq->unbound_attrs->nice);
+        mutex_unlock(&wq->mutex);
+
+        return written;
+}
+
+/* prepare workqueue_attrs for sysfs store operations */
+static struct workqueue_attrs *wq_sysfs_prep_attrs(struct workqueue_struct *wq)
+{
+        struct workqueue_attrs *attrs;
+
+        attrs = alloc_workqueue_attrs(GFP_KERNEL);
+        if (!attrs)
+                return NULL;
+
+        mutex_lock(&wq->mutex);
+        copy_workqueue_attrs(attrs, wq->unbound_attrs);
+        mutex_unlock(&wq->mutex);
+        return attrs;
+}
+
+static ssize_t wq_nice_store(struct device *dev, struct device_attribute *attr,
+                             const char *buf, size_t count)
+{
+        struct workqueue_struct *wq = dev_to_wq(dev);
+        struct workqueue_attrs *attrs;
+        int ret;
+
+        attrs = wq_sysfs_prep_attrs(wq);
+        if (!attrs)
+                return -ENOMEM;
+
+        if (sscanf(buf, "%d", &attrs->nice) == 1 &&
+            attrs->nice >= -20 && attrs->nice <= 19)
+                ret = apply_workqueue_attrs(wq, attrs);
+        else
+                ret = -EINVAL;
+
+        free_workqueue_attrs(attrs);
+        return ret ?: count;
+}
+
+static ssize_t wq_cpumask_show(struct device *dev,
+                               struct device_attribute *attr, char *buf)
+{
+        struct workqueue_struct *wq = dev_to_wq(dev);
+        int written;
+
+        mutex_lock(&wq->mutex);
+        written = cpumask_scnprintf(buf, PAGE_SIZE, wq->unbound_attrs->cpumask);
+        mutex_unlock(&wq->mutex);
+
+        written += scnprintf(buf + written, PAGE_SIZE - written, "\n");
+        return written;
+}
+
+static ssize_t wq_cpumask_store(struct device *dev,
+                                struct device_attribute *attr,
+                                const char *buf, size_t count)
+{
+        struct workqueue_struct *wq = dev_to_wq(dev);
+        struct workqueue_attrs *attrs;
+        int ret;
+
+        attrs = wq_sysfs_prep_attrs(wq);
+        if (!attrs)
+                return -ENOMEM;
+
+        ret = cpumask_parse(buf, attrs->cpumask);
+        if (!ret)
+                ret = apply_workqueue_attrs(wq, attrs);
+
+        free_workqueue_attrs(attrs);
+        return ret ?: count;
+}
+
+static ssize_t wq_numa_show(struct device *dev, struct device_attribute *attr,
+                            char *buf)
+{
+        struct workqueue_struct *wq = dev_to_wq(dev);
+        int written;
+
+        mutex_lock(&wq->mutex);
+        written = scnprintf(buf, PAGE_SIZE, "%d\n",
+                            !wq->unbound_attrs->no_numa);
+        mutex_unlock(&wq->mutex);
+
+        return written;
+}
+
+static ssize_t wq_numa_store(struct device *dev, struct device_attribute *attr,
+                             const char *buf, size_t count)
+{
+        struct workqueue_struct *wq = dev_to_wq(dev);
+        struct workqueue_attrs *attrs;
+        int v, ret;
+
+        attrs = wq_sysfs_prep_attrs(wq);
+        if (!attrs)
+                return -ENOMEM;
+
+        ret = -EINVAL;
+        if (sscanf(buf, "%d", &v) == 1) {
+                attrs->no_numa = !v;
+                ret = apply_workqueue_attrs(wq, attrs);
+        }
+
+        free_workqueue_attrs(attrs);
+        return ret ?: count;
+}
+
+static struct device_attribute wq_sysfs_unbound_attrs[] = {
+        __ATTR(pool_ids, 0444, wq_pool_ids_show, NULL),
+        __ATTR(nice, 0644, wq_nice_show, wq_nice_store),
+        __ATTR(cpumask, 0644, wq_cpumask_show, wq_cpumask_store),
+        __ATTR(numa, 0644, wq_numa_show, wq_numa_store),
+        __ATTR_NULL,
+};
+
+static struct bus_type wq_subsys = {
+        .name                           = "workqueue",
+        .dev_attrs                      = wq_sysfs_attrs,
+};
+
+static int __init wq_sysfs_init(void)
+{
+        return subsys_virtual_register(&wq_subsys, NULL);
+}
+core_initcall(wq_sysfs_init);
+
+static void wq_device_release(struct device *dev)
+{
+        struct wq_device *wq_dev = container_of(dev, struct wq_device, dev);
+
+        kfree(wq_dev);
+}
+
+/**
+ * workqueue_sysfs_register - make a workqueue visible in sysfs
+ * @wq: the workqueue to register
+ *
+ * Expose @wq in sysfs under /sys/bus/workqueue/devices.
+ * alloc_workqueue*() automatically calls this function if WQ_SYSFS is set
+ * which is the preferred method.
+ *
+ * Workqueue user should use this function directly iff it wants to apply
+ * workqueue_attrs before making the workqueue visible in sysfs; otherwise,
+ * apply_workqueue_attrs() may race against userland updating the
+ * attributes.
+ *
+ * Returns 0 on success, -errno on failure.
+ */
+int workqueue_sysfs_register(struct workqueue_struct *wq)
+{
+        struct wq_device *wq_dev;
+        int ret;
+
         /*
-         * pwqs are forced aligned according to WORK_STRUCT_FLAG_BITS.
-         * Make sure that the alignment isn't lower than that of
-         * unsigned long long.
+         * Adjusting max_active or creating new pwqs by applyting
+         * attributes breaks ordering guarantee.  Disallow exposing ordered
+         * workqueues.
          */
-        const size_t size = sizeof(struct pool_workqueue);
-        const size_t align = max_t(size_t, 1 << WORK_STRUCT_FLAG_BITS,
-                                   __alignof__(unsigned long long));
+        if (WARN_ON(wq->flags & __WQ_ORDERED))
+                return -EINVAL;
 
-        if (!(wq->flags & WQ_UNBOUND))
-                wq->pool_wq.pcpu = __alloc_percpu(size, align);
-        else {
-                void *ptr;
+        wq->wq_dev = wq_dev = kzalloc(sizeof(*wq_dev), GFP_KERNEL);
+        if (!wq_dev)
+                return -ENOMEM;
+
+        wq_dev->wq = wq;
+        wq_dev->dev.bus = &wq_subsys;
+        wq_dev->dev.init_name = wq->name;
+        wq_dev->dev.release = wq_device_release;
+
+        /*
+         * unbound_attrs are created separately.  Suppress uevent until
+         * everything is ready.
+         */
+        dev_set_uevent_suppress(&wq_dev->dev, true);
+
+        ret = device_register(&wq_dev->dev);
+        if (ret) {
+                kfree(wq_dev);
+                wq->wq_dev = NULL;
+                return ret;
+        }
+
+        if (wq->flags & WQ_UNBOUND) {
+                struct device_attribute *attr;
+
+                for (attr = wq_sysfs_unbound_attrs; attr->attr.name; attr++) {
+                        ret = device_create_file(&wq_dev->dev, attr);
+                        if (ret) {
+                                device_unregister(&wq_dev->dev);
+                                wq->wq_dev = NULL;
+                                return ret;
+                        }
+                }
+        }
+
+        kobject_uevent(&wq_dev->dev.kobj, KOBJ_ADD);
+        return 0;
+}
+
+/**
+ * workqueue_sysfs_unregister - undo workqueue_sysfs_register()
+ * @wq: the workqueue to unregister
+ *
+ * If @wq is registered to sysfs by workqueue_sysfs_register(), unregister.
+ */
+static void workqueue_sysfs_unregister(struct workqueue_struct *wq)
+{
+        struct wq_device *wq_dev = wq->wq_dev;
+
+        if (!wq->wq_dev)
+                return;
+
+        wq->wq_dev = NULL;
+        device_unregister(&wq_dev->dev);
+}
+#else   /* CONFIG_SYSFS */
+static void workqueue_sysfs_unregister(struct workqueue_struct *wq)     { }
+#endif  /* CONFIG_SYSFS */
+
+/**
+ * free_workqueue_attrs - free a workqueue_attrs
+ * @attrs: workqueue_attrs to free
+ *
+ * Undo alloc_workqueue_attrs().
+ */
+void free_workqueue_attrs(struct workqueue_attrs *attrs)
+{
+        if (attrs) {
+                free_cpumask_var(attrs->cpumask);
+                kfree(attrs);
+        }
+}
+
+/**
+ * alloc_workqueue_attrs - allocate a workqueue_attrs
+ * @gfp_mask: allocation mask to use
+ *
+ * Allocate a new workqueue_attrs, initialize with default settings and
+ * return it.  Returns NULL on failure.
+ */
+struct workqueue_attrs *alloc_workqueue_attrs(gfp_t gfp_mask)
+{
+        struct workqueue_attrs *attrs;
+
+        attrs = kzalloc(sizeof(*attrs), gfp_mask);
+        if (!attrs)
+                goto fail;
+        if (!alloc_cpumask_var(&attrs->cpumask, gfp_mask))
+                goto fail;
+
+        cpumask_copy(attrs->cpumask, cpu_possible_mask);
+        return attrs;
+fail:
+        free_workqueue_attrs(attrs);
+        return NULL;
+}
+
+static void copy_workqueue_attrs(struct workqueue_attrs *to,
+                                 const struct workqueue_attrs *from)
+{
+        to->nice = from->nice;
+        cpumask_copy(to->cpumask, from->cpumask);
+}
+
+/* hash value of the content of @attr */
+static u32 wqattrs_hash(const struct workqueue_attrs *attrs)
+{
+        u32 hash = 0;
+
+        hash = jhash_1word(attrs->nice, hash);
+        hash = jhash(cpumask_bits(attrs->cpumask),
+                     BITS_TO_LONGS(nr_cpumask_bits) * sizeof(long), hash);
+        return hash;
+}
+
+/* content equality test */
+static bool wqattrs_equal(const struct workqueue_attrs *a,
+                          const struct workqueue_attrs *b)
+{
+        if (a->nice != b->nice)
+                return false;
+        if (!cpumask_equal(a->cpumask, b->cpumask))
+                return false;
+        return true;
+}
+
+/**
+ * init_worker_pool - initialize a newly zalloc'd worker_pool
+ * @pool: worker_pool to initialize
+ *
+ * Initiailize a newly zalloc'd @pool.  It also allocates @pool->attrs.
+ * Returns 0 on success, -errno on failure.  Even on failure, all fields
+ * inside @pool proper are initialized and put_unbound_pool() can be called
+ * on @pool safely to release it.
+ */
+static int init_worker_pool(struct worker_pool *pool)
+{
+        spin_lock_init(&pool->lock);
+        pool->id = -1;
+        pool->cpu = -1;
+        pool->node = NUMA_NO_NODE;
+        pool->flags |= POOL_DISASSOCIATED;
+        INIT_LIST_HEAD(&pool->worklist);
+        INIT_LIST_HEAD(&pool->idle_list);
+        hash_init(pool->busy_hash);
+
+        init_timer_deferrable(&pool->idle_timer);
+        pool->idle_timer.function = idle_worker_timeout;
+        pool->idle_timer.data = (unsigned long)pool;
+
+        setup_timer(&pool->mayday_timer, pool_mayday_timeout,
+                    (unsigned long)pool);
+
+        mutex_init(&pool->manager_arb);
+        mutex_init(&pool->manager_mutex);
+        idr_init(&pool->worker_idr);
+
+        INIT_HLIST_NODE(&pool->hash_node);
+        pool->refcnt = 1;
+
+        /* shouldn't fail above this point */
+        pool->attrs = alloc_workqueue_attrs(GFP_KERNEL);
+        if (!pool->attrs)
+                return -ENOMEM;
+        return 0;
+}
+
+static void rcu_free_pool(struct rcu_head *rcu)
+{
+        struct worker_pool *pool = container_of(rcu, struct worker_pool, rcu);
+
+        idr_destroy(&pool->worker_idr);
+        free_workqueue_attrs(pool->attrs);
+        kfree(pool);
+}
+
+/**
+ * put_unbound_pool - put a worker_pool
+ * @pool: worker_pool to put
+ *
+ * Put @pool.  If its refcnt reaches zero, it gets destroyed in sched-RCU
+ * safe manner.  get_unbound_pool() calls this function on its failure path
+ * and this function should be able to release pools which went through,
+ * successfully or not, init_worker_pool().
+ *
+ * Should be called with wq_pool_mutex held.
+ */
+static void put_unbound_pool(struct worker_pool *pool)
+{
+        struct worker *worker;
+
+        lockdep_assert_held(&wq_pool_mutex);
+
+        if (--pool->refcnt)
+                return;
+
+        /* sanity checks */
+        if (WARN_ON(!(pool->flags & POOL_DISASSOCIATED)) ||
+            WARN_ON(!list_empty(&pool->worklist)))
+                return;
+
+        /* release id and unhash */
+        if (pool->id >= 0)
+                idr_remove(&worker_pool_idr, pool->id);
+        hash_del(&pool->hash_node);
+
+        /*
+         * Become the manager and destroy all workers.  Grabbing
+         * manager_arb prevents @pool's workers from blocking on
+         * manager_mutex.
+         */
+        mutex_lock(&pool->manager_arb);
+        mutex_lock(&pool->manager_mutex);
+        spin_lock_irq(&pool->lock);
+
+        while ((worker = first_worker(pool)))
+                destroy_worker(worker);
+        WARN_ON(pool->nr_workers || pool->nr_idle);
+
+        spin_unlock_irq(&pool->lock);
+        mutex_unlock(&pool->manager_mutex);
+        mutex_unlock(&pool->manager_arb);
+
+        /* shut down the timers */
+        del_timer_sync(&pool->idle_timer);
+        del_timer_sync(&pool->mayday_timer);
+
+        /* sched-RCU protected to allow dereferences from get_work_pool() */
+        call_rcu_sched(&pool->rcu, rcu_free_pool);
+}
+
+/**
+ * get_unbound_pool - get a worker_pool with the specified attributes
+ * @attrs: the attributes of the worker_pool to get
+ *
+ * Obtain a worker_pool which has the same attributes as @attrs, bump the
+ * reference count and return it.  If there already is a matching
+ * worker_pool, it will be used; otherwise, this function attempts to
+ * create a new one.  On failure, returns NULL.
+ *
+ * Should be called with wq_pool_mutex held.
+ */
+static struct worker_pool *get_unbound_pool(const struct workqueue_attrs *attrs)
+{
+        u32 hash = wqattrs_hash(attrs);
+        struct worker_pool *pool;
+        int node;
+
+        lockdep_assert_held(&wq_pool_mutex);
+
+        /* do we already have a matching pool? */
+        hash_for_each_possible(unbound_pool_hash, pool, hash_node, hash) {
+                if (wqattrs_equal(pool->attrs, attrs)) {
+                        pool->refcnt++;
+                        goto out_unlock;
+                }
+        }
+
+        /* nope, create a new one */
+        pool = kzalloc(sizeof(*pool), GFP_KERNEL);
+        if (!pool || init_worker_pool(pool) < 0)
+                goto fail;
+
+        if (workqueue_freezing)
+                pool->flags |= POOL_FREEZING;
+
+        lockdep_set_subclass(&pool->lock, 1);   /* see put_pwq() */
+        copy_workqueue_attrs(pool->attrs, attrs);
+
+        /* if cpumask is contained inside a NUMA node, we belong to that node */
+        if (wq_numa_enabled) {
+                for_each_node(node) {
+                        if (cpumask_subset(pool->attrs->cpumask,
+                                           wq_numa_possible_cpumask[node])) {
+                                pool->node = node;
+                                break;
+                        }
+                }
+        }
+
+        if (worker_pool_assign_id(pool) < 0)
+                goto fail;
+
+        /* create and start the initial worker */
+        if (create_and_start_worker(pool) < 0)
+                goto fail;
+
+        /* install */
+        hash_add(unbound_pool_hash, &pool->hash_node, hash);
+out_unlock:
+        return pool;
+fail:
+        if (pool)
+                put_unbound_pool(pool);
+        return NULL;
+}
+
+static void rcu_free_pwq(struct rcu_head *rcu)
+{
+        kmem_cache_free(pwq_cache,
+                        container_of(rcu, struct pool_workqueue, rcu));
+}
+
+/*
+ * Scheduled on system_wq by put_pwq() when an unbound pwq hits zero refcnt
+ * and needs to be destroyed.
+ */
+static void pwq_unbound_release_workfn(struct work_struct *work)
+{
+        struct pool_workqueue *pwq = container_of(work, struct pool_workqueue,
+                                                  unbound_release_work);
+        struct workqueue_struct *wq = pwq->wq;
+        struct worker_pool *pool = pwq->pool;
+        bool is_last;
+
+        if (WARN_ON_ONCE(!(wq->flags & WQ_UNBOUND)))
+                return;
+
+        /*
+         * Unlink @pwq.  Synchronization against wq->mutex isn't strictly
+         * necessary on release but do it anyway.  It's easier to verify
+         * and consistent with the linking path.
+         */
+        mutex_lock(&wq->mutex);
+        list_del_rcu(&pwq->pwqs_node);
+        is_last = list_empty(&wq->pwqs);
+        mutex_unlock(&wq->mutex);
+
+        mutex_lock(&wq_pool_mutex);
+        put_unbound_pool(pool);
+        mutex_unlock(&wq_pool_mutex);
+
+        call_rcu_sched(&pwq->rcu, rcu_free_pwq);
+
+        /*
+         * If we're the last pwq going away, @wq is already dead and no one
+         * is gonna access it anymore.  Free it.
+         */
+        if (is_last) {
+                free_workqueue_attrs(wq->unbound_attrs);
+                kfree(wq);
+        }
+}
+
+/**
+ * pwq_adjust_max_active - update a pwq's max_active to the current setting
+ * @pwq: target pool_workqueue
+ *
+ * If @pwq isn't freezing, set @pwq->max_active to the associated
+ * workqueue's saved_max_active and activate delayed work items
+ * accordingly.  If @pwq is freezing, clear @pwq->max_active to zero.
+ */
+static void pwq_adjust_max_active(struct pool_workqueue *pwq)
+{
+        struct workqueue_struct *wq = pwq->wq;
+        bool freezable = wq->flags & WQ_FREEZABLE;
+
+        /* for @wq->saved_max_active */
+        lockdep_assert_held(&wq->mutex);
+
+        /* fast exit for non-freezable wqs */
+        if (!freezable && pwq->max_active == wq->saved_max_active)
+                return;
+
+        spin_lock_irq(&pwq->pool->lock);
+
+        if (!freezable || !(pwq->pool->flags & POOL_FREEZING)) {
+                pwq->max_active = wq->saved_max_active;
+
+                while (!list_empty(&pwq->delayed_works) &&
+                       pwq->nr_active < pwq->max_active)
+                        pwq_activate_first_delayed(pwq);
 
                 /*
-                 * Allocate enough room to align pwq and put an extra
-                 * pointer at the end pointing back to the originally
-                 * allocated pointer which will be used for free.
+                 * Need to kick a worker after thawed or an unbound wq's
+                 * max_active is bumped.  It's a slow path.  Do it always.
                  */
-                ptr = kzalloc(size + align + sizeof(void *), GFP_KERNEL);
-                if (ptr) {
-                        wq->pool_wq.single = PTR_ALIGN(ptr, align);
-                        *(void **)(wq->pool_wq.single + 1) = ptr;
+                wake_up_worker(pwq->pool);
+        } else {
+                pwq->max_active = 0;
+        }
+
+        spin_unlock_irq(&pwq->pool->lock);
+}
+
+/* initialize newly alloced @pwq which is associated with @wq and @pool */
+static void init_pwq(struct pool_workqueue *pwq, struct workqueue_struct *wq,
+                     struct worker_pool *pool)
+{
+        BUG_ON((unsigned long)pwq & WORK_STRUCT_FLAG_MASK);
+
+        memset(pwq, 0, sizeof(*pwq));
+
+        pwq->pool = pool;
+        pwq->wq = wq;
+        pwq->flush_color = -1;
+        pwq->refcnt = 1;
+        INIT_LIST_HEAD(&pwq->delayed_works);
+        INIT_LIST_HEAD(&pwq->pwqs_node);
+        INIT_LIST_HEAD(&pwq->mayday_node);
+        INIT_WORK(&pwq->unbound_release_work, pwq_unbound_release_workfn);
+}
+
+/* sync @pwq with the current state of its associated wq and link it */
+static void link_pwq(struct pool_workqueue *pwq)
+{
+        struct workqueue_struct *wq = pwq->wq;
+
+        lockdep_assert_held(&wq->mutex);
+
+        /* may be called multiple times, ignore if already linked */
+        if (!list_empty(&pwq->pwqs_node))
+                return;
+
+        /*
+         * Set the matching work_color.  This is synchronized with
+         * wq->mutex to avoid confusing flush_workqueue().
+         */
+        pwq->work_color = wq->work_color;
+
+        /* sync max_active to the current setting */
+        pwq_adjust_max_active(pwq);
+
+        /* link in @pwq */
+        list_add_rcu(&pwq->pwqs_node, &wq->pwqs);
+}
+
+/* obtain a pool matching @attr and create a pwq associating the pool and @wq */
+static struct pool_workqueue *alloc_unbound_pwq(struct workqueue_struct *wq,
+                                        const struct workqueue_attrs *attrs)
+{
+        struct worker_pool *pool;
+        struct pool_workqueue *pwq;
+
+        lockdep_assert_held(&wq_pool_mutex);
+
+        pool = get_unbound_pool(attrs);
+        if (!pool)
+                return NULL;
+
+        pwq = kmem_cache_alloc_node(pwq_cache, GFP_KERNEL, pool->node);
+        if (!pwq) {
+                put_unbound_pool(pool);
+                return NULL;
+        }
+
+        init_pwq(pwq, wq, pool);
+        return pwq;
+}
+
+/* undo alloc_unbound_pwq(), used only in the error path */
+static void free_unbound_pwq(struct pool_workqueue *pwq)
+{
+        lockdep_assert_held(&wq_pool_mutex);
+
+        if (pwq) {
+                put_unbound_pool(pwq->pool);
+                kfree(pwq);
+        }
+}
+
+/**
+ * wq_calc_node_mask - calculate a wq_attrs' cpumask for the specified node
+ * @attrs: the wq_attrs of interest
+ * @node: the target NUMA node
+ * @cpu_going_down: if >= 0, the CPU to consider as offline
+ * @cpumask: outarg, the resulting cpumask
+ *
+ * Calculate the cpumask a workqueue with @attrs should use on @node.  If
+ * @cpu_going_down is >= 0, that cpu is considered offline during
+ * calculation.  The result is stored in @cpumask.  This function returns
+ * %true if the resulting @cpumask is different from @attrs->cpumask,
+ * %false if equal.
+ *
+ * If NUMA affinity is not enabled, @attrs->cpumask is always used.  If
+ * enabled and @node has online CPUs requested by @attrs, the returned
+ * cpumask is the intersection of the possible CPUs of @node and
+ * @attrs->cpumask.
+ *
+ * The caller is responsible for ensuring that the cpumask of @node stays
+ * stable.
+ */
+static bool wq_calc_node_cpumask(const struct workqueue_attrs *attrs, int node,
+                                 int cpu_going_down, cpumask_t *cpumask)
+{
+        if (!wq_numa_enabled || attrs->no_numa)
+                goto use_dfl;
+
+        /* does @node have any online CPUs @attrs wants? */
+        cpumask_and(cpumask, cpumask_of_node(node), attrs->cpumask);
+        if (cpu_going_down >= 0)
+                cpumask_clear_cpu(cpu_going_down, cpumask);
+
+        if (cpumask_empty(cpumask))
+                goto use_dfl;
+
+        /* yeap, return possible CPUs in @node that @attrs wants */
+        cpumask_and(cpumask, attrs->cpumask, wq_numa_possible_cpumask[node]);
+        return !cpumask_equal(cpumask, attrs->cpumask);
+
+use_dfl:
+        cpumask_copy(cpumask, attrs->cpumask);
+        return false;
+}
+
+/* install @pwq into @wq's numa_pwq_tbl[] for @node and return the old pwq */
+static struct pool_workqueue *numa_pwq_tbl_install(struct workqueue_struct *wq,
+                                                   int node,
+                                                   struct pool_workqueue *pwq)
+{
+        struct pool_workqueue *old_pwq;
+
+        lockdep_assert_held(&wq->mutex);
+
+        /* link_pwq() can handle duplicate calls */
+        link_pwq(pwq);
+
+        old_pwq = rcu_access_pointer(wq->numa_pwq_tbl[node]);
+        rcu_assign_pointer(wq->numa_pwq_tbl[node], pwq);
+        return old_pwq;
+}
+
+/**
+ * apply_workqueue_attrs - apply new workqueue_attrs to an unbound workqueue
+ * @wq: the target workqueue
+ * @attrs: the workqueue_attrs to apply, allocated with alloc_workqueue_attrs()
+ *
+ * Apply @attrs to an unbound workqueue @wq.  Unless disabled, on NUMA
+ * machines, this function maps a separate pwq to each NUMA node with
+ * possibles CPUs in @attrs->cpumask so that work items are affine to the
+ * NUMA node it was issued on.  Older pwqs are released as in-flight work
+ * items finish.  Note that a work item which repeatedly requeues itself
+ * back-to-back will stay on its current pwq.
+ *
+ * Performs GFP_KERNEL allocations.  Returns 0 on success and -errno on
+ * failure.
+ */
+int apply_workqueue_attrs(struct workqueue_struct *wq,
+                          const struct workqueue_attrs *attrs)
+{
+        struct workqueue_attrs *new_attrs, *tmp_attrs;
+        struct pool_workqueue **pwq_tbl, *dfl_pwq;
+        int node, ret;
+
+        /* only unbound workqueues can change attributes */
+        if (WARN_ON(!(wq->flags & WQ_UNBOUND)))
+                return -EINVAL;
+
+        /* creating multiple pwqs breaks ordering guarantee */
+        if (WARN_ON((wq->flags & __WQ_ORDERED) && !list_empty(&wq->pwqs)))
+                return -EINVAL;
+
+        pwq_tbl = kzalloc(wq_numa_tbl_len * sizeof(pwq_tbl[0]), GFP_KERNEL);
+        new_attrs = alloc_workqueue_attrs(GFP_KERNEL);
+        tmp_attrs = alloc_workqueue_attrs(GFP_KERNEL);
+        if (!pwq_tbl || !new_attrs || !tmp_attrs)
+                goto enomem;
+
+        /* make a copy of @attrs and sanitize it */
+        copy_workqueue_attrs(new_attrs, attrs);
+        cpumask_and(new_attrs->cpumask, new_attrs->cpumask, cpu_possible_mask);
+
+        /*
+         * We may create multiple pwqs with differing cpumasks.  Make a
+         * copy of @new_attrs which will be modified and used to obtain
+         * pools.
+         */
+        copy_workqueue_attrs(tmp_attrs, new_attrs);
+
+        /*
+         * CPUs should stay stable across pwq creations and installations.
+         * Pin CPUs, determine the target cpumask for each node and create
+         * pwqs accordingly.
+         */
+        get_online_cpus();
+
+        mutex_lock(&wq_pool_mutex);
+
+        /*
+         * If something goes wrong during CPU up/down, we'll fall back to
+         * the default pwq covering whole @attrs->cpumask.  Always create
+         * it even if we don't use it immediately.
+         */
+        dfl_pwq = alloc_unbound_pwq(wq, new_attrs);
+        if (!dfl_pwq)
+                goto enomem_pwq;
+
+        for_each_node(node) {
+                if (wq_calc_node_cpumask(attrs, node, -1, tmp_attrs->cpumask)) {
+                        pwq_tbl[node] = alloc_unbound_pwq(wq, tmp_attrs);
+                        if (!pwq_tbl[node])
+                                goto enomem_pwq;
+                } else {
+                        dfl_pwq->refcnt++;
+                        pwq_tbl[node] = dfl_pwq;
                 }
         }
 
-        /* just in case, make sure it's actually aligned */
-        BUG_ON(!IS_ALIGNED(wq->pool_wq.v, align));
-        return wq->pool_wq.v ? 0 : -ENOMEM;
+        mutex_unlock(&wq_pool_mutex);
+
+        /* all pwqs have been created successfully, let's install'em */
+        mutex_lock(&wq->mutex);
+
+        copy_workqueue_attrs(wq->unbound_attrs, new_attrs);
+
+        /* save the previous pwq and install the new one */
+        for_each_node(node)
+                pwq_tbl[node] = numa_pwq_tbl_install(wq, node, pwq_tbl[node]);
+
+        /* @dfl_pwq might not have been used, ensure it's linked */
+        link_pwq(dfl_pwq);
+        swap(wq->dfl_pwq, dfl_pwq);
+
+        mutex_unlock(&wq->mutex);
+
+        /* put the old pwqs */
+        for_each_node(node)
+                put_pwq_unlocked(pwq_tbl[node]);
+        put_pwq_unlocked(dfl_pwq);
+
+        put_online_cpus();
+        ret = 0;
+        /* fall through */
+out_free:
+        free_workqueue_attrs(tmp_attrs);
+        free_workqueue_attrs(new_attrs);
+        kfree(pwq_tbl);
+        return ret;
+
+enomem_pwq:
+        free_unbound_pwq(dfl_pwq);
+        for_each_node(node)
+                if (pwq_tbl && pwq_tbl[node] != dfl_pwq)
+                        free_unbound_pwq(pwq_tbl[node]);
+        mutex_unlock(&wq_pool_mutex);
+        put_online_cpus();
+enomem:
+        ret = -ENOMEM;
+        goto out_free;
 }
 
-static void free_pwqs(struct workqueue_struct *wq)
+/**
+ * wq_update_unbound_numa - update NUMA affinity of a wq for CPU hot[un]plug
+ * @wq: the target workqueue
+ * @cpu: the CPU coming up or going down
+ * @online: whether @cpu is coming up or going down
+ *
+ * This function is to be called from %CPU_DOWN_PREPARE, %CPU_ONLINE and
+ * %CPU_DOWN_FAILED.  @cpu is being hot[un]plugged, update NUMA affinity of
+ * @wq accordingly.
+ *
+ * If NUMA affinity can't be adjusted due to memory allocation failure, it
+ * falls back to @wq->dfl_pwq which may not be optimal but is always
+ * correct.
+ *
+ * Note that when the last allowed CPU of a NUMA node goes offline for a
+ * workqueue with a cpumask spanning multiple nodes, the workers which were
+ * already executing the work items for the workqueue will lose their CPU
+ * affinity and may execute on any CPU.  This is similar to how per-cpu
+ * workqueues behave on CPU_DOWN.  If a workqueue user wants strict
+ * affinity, it's the user's responsibility to flush the work item from
+ * CPU_DOWN_PREPARE.
+ */
+static void wq_update_unbound_numa(struct workqueue_struct *wq, int cpu,
+                                   bool online)
 {
-        if (!(wq->flags & WQ_UNBOUND))
-                free_percpu(wq->pool_wq.pcpu);
-        else if (wq->pool_wq.single) {
-                /* the pointer to free is stored right after the pwq */
-                kfree(*(void **)(wq->pool_wq.single + 1));
+        int node = cpu_to_node(cpu);
+        int cpu_off = online ? -1 : cpu;
+        struct pool_workqueue *old_pwq = NULL, *pwq;
+        struct workqueue_attrs *target_attrs;
+        cpumask_t *cpumask;
+
+        lockdep_assert_held(&wq_pool_mutex);
+
+        if (!wq_numa_enabled || !(wq->flags & WQ_UNBOUND))
+                return;
+
+        /*
+         * We don't wanna alloc/free wq_attrs for each wq for each CPU.
+         * Let's use a preallocated one.  The following buf is protected by
+         * CPU hotplug exclusion.
+         */
+        target_attrs = wq_update_unbound_numa_attrs_buf;
+        cpumask = target_attrs->cpumask;
+
+        mutex_lock(&wq->mutex);
+        if (wq->unbound_attrs->no_numa)
+                goto out_unlock;
+
+        copy_workqueue_attrs(target_attrs, wq->unbound_attrs);
+        pwq = unbound_pwq_by_node(wq, node);
+
+        /*
+         * Let's determine what needs to be done.  If the target cpumask is
+         * different from wq's, we need to compare it to @pwq's and create
+         * a new one if they don't match.  If the target cpumask equals
+         * wq's, the default pwq should be used.  If @pwq is already the
+         * default one, nothing to do; otherwise, install the default one.
+         */
+        if (wq_calc_node_cpumask(wq->unbound_attrs, node, cpu_off, cpumask)) {
+                if (cpumask_equal(cpumask, pwq->pool->attrs->cpumask))
+                        goto out_unlock;
+        } else {
+                if (pwq == wq->dfl_pwq)
+                        goto out_unlock;
+                else
+                        goto use_dfl_pwq;
+        }
+
+        mutex_unlock(&wq->mutex);
+
+        /* create a new pwq */
+        pwq = alloc_unbound_pwq(wq, target_attrs);
+        if (!pwq) {
+                pr_warning("workqueue: allocation failed while updating NUMA affinity of \"%s\"\n",
+                           wq->name);
+                goto out_unlock;
+        }
+
+        /*
+         * Install the new pwq.  As this function is called only from CPU
+         * hotplug callbacks and applying a new attrs is wrapped with
+         * get/put_online_cpus(), @wq->unbound_attrs couldn't have changed
+         * inbetween.
+         */
+        mutex_lock(&wq->mutex);
+        old_pwq = numa_pwq_tbl_install(wq, node, pwq);
+        goto out_unlock;
+
+use_dfl_pwq:
+        spin_lock_irq(&wq->dfl_pwq->pool->lock);
+        get_pwq(wq->dfl_pwq);
+        spin_unlock_irq(&wq->dfl_pwq->pool->lock);
+        old_pwq = numa_pwq_tbl_install(wq, node, wq->dfl_pwq);
+out_unlock:
+        mutex_unlock(&wq->mutex);
+        put_pwq_unlocked(old_pwq);
+}
+
+static int alloc_and_link_pwqs(struct workqueue_struct *wq)
+{
+        bool highpri = wq->flags & WQ_HIGHPRI;
+        int cpu;
+
+        if (!(wq->flags & WQ_UNBOUND)) {
+                wq->cpu_pwqs = alloc_percpu(struct pool_workqueue);
+                if (!wq->cpu_pwqs)
+                        return -ENOMEM;
+
+                for_each_possible_cpu(cpu) {
+                        struct pool_workqueue *pwq =
+                                per_cpu_ptr(wq->cpu_pwqs, cpu);
+                        struct worker_pool *cpu_pools =
+                                per_cpu(cpu_worker_pools, cpu);
+
+                        init_pwq(pwq, wq, &cpu_pools[highpri]);
+
+                        mutex_lock(&wq->mutex);
+                        link_pwq(pwq);
+                        mutex_unlock(&wq->mutex);
+                }
+                return 0;
+        } else {
+                return apply_workqueue_attrs(wq, unbound_std_wq_attrs[highpri]);
         }
 }
 
@@ -3151,30 +4078,28 @@ struct workqueue_struct *__alloc_workqueue_key(const char *fmt,
                                                struct lock_class_key *key,
                                                const char *lock_name, ...)
 {
-        va_list args, args1;
+        size_t tbl_size = 0;
+        va_list args;
         struct workqueue_struct *wq;
-        unsigned int cpu;
-        size_t namelen;
+        struct pool_workqueue *pwq;
 
-        /* determine namelen, allocate wq and format name */
-        va_start(args, lock_name);
-        va_copy(args1, args);
-        namelen = vsnprintf(NULL, 0, fmt, args) + 1;
+        /* allocate wq and format name */
+        if (flags & WQ_UNBOUND)
+                tbl_size = wq_numa_tbl_len * sizeof(wq->numa_pwq_tbl[0]);
 
-        wq = kzalloc(sizeof(*wq) + namelen, GFP_KERNEL);
+        wq = kzalloc(sizeof(*wq) + tbl_size, GFP_KERNEL);
         if (!wq)
-                goto err;
+                return NULL;
 
-        vsnprintf(wq->name, namelen, fmt, args1);
-        va_end(args);
-        va_end(args1);
+        if (flags & WQ_UNBOUND) {
+                wq->unbound_attrs = alloc_workqueue_attrs(GFP_KERNEL);
+                if (!wq->unbound_attrs)
+                        goto err_free_wq;
+        }
 
-        /*
-         * Workqueues which may be used during memory reclaim should
-         * have a rescuer to guarantee forward progress.
-         */
-        if (flags & WQ_MEM_RECLAIM)
-                flags |= WQ_RESCUER;
+        va_start(args, lock_name);
+        vsnprintf(wq->name, sizeof(wq->name), fmt, args);
+        va_end(args);
 
         max_active = max_active ?: WQ_DFL_ACTIVE;
         max_active = wq_clamp_max_active(max_active, flags, wq->name);
@@ -3182,71 +4107,70 @@ struct workqueue_struct *__alloc_workqueue_key(const char *fmt,
         /* init wq */
         wq->flags = flags;
         wq->saved_max_active = max_active;
-        mutex_init(&wq->flush_mutex);
+        mutex_init(&wq->mutex);
         atomic_set(&wq->nr_pwqs_to_flush, 0);
+        INIT_LIST_HEAD(&wq->pwqs);
         INIT_LIST_HEAD(&wq->flusher_queue);
         INIT_LIST_HEAD(&wq->flusher_overflow);
+        INIT_LIST_HEAD(&wq->maydays);
 
         lockdep_init_map(&wq->lockdep_map, lock_name, key, 0);
         INIT_LIST_HEAD(&wq->list);
 
-        if (alloc_pwqs(wq) < 0)
-                goto err;
-
-        for_each_pwq_cpu(cpu, wq) {
-                struct pool_workqueue *pwq = get_pwq(cpu, wq);
+        if (alloc_and_link_pwqs(wq) < 0)
+                goto err_free_wq;
 
-                BUG_ON((unsigned long)pwq & WORK_STRUCT_FLAG_MASK);
-                pwq->pool = get_std_worker_pool(cpu, flags & WQ_HIGHPRI);
-                pwq->wq = wq;
-                pwq->flush_color = -1;
-                pwq->max_active = max_active;
-                INIT_LIST_HEAD(&pwq->delayed_works);
-        }
-
-        if (flags & WQ_RESCUER) {
+        /*
+         * Workqueues which may be used during memory reclaim should
+         * have a rescuer to guarantee forward progress.
+         */
+        if (flags & WQ_MEM_RECLAIM) {
                 struct worker *rescuer;
 
-                if (!alloc_mayday_mask(&wq->mayday_mask, GFP_KERNEL))
-                        goto err;
-
-                wq->rescuer = rescuer = alloc_worker();
+                rescuer = alloc_worker();
                 if (!rescuer)
-                        goto err;
+                        goto err_destroy;
 
                 rescuer->rescue_wq = wq;
                 rescuer->task = kthread_create(rescuer_thread, rescuer, "%s",
                                                wq->name);
-                if (IS_ERR(rescuer->task))
-                        goto err;
+                if (IS_ERR(rescuer->task)) {
+                        kfree(rescuer);
+                        goto err_destroy;
+                }
 
-                rescuer->task->flags |= PF_THREAD_BOUND;
+                wq->rescuer = rescuer;
+                rescuer->task->flags |= PF_NO_SETAFFINITY;
                 wake_up_process(rescuer->task);
         }
 
+        if ((wq->flags & WQ_SYSFS) && workqueue_sysfs_register(wq))
+                goto err_destroy;
+
         /*
-         * workqueue_lock protects global freeze state and workqueues
-         * list.  Grab it, set max_active accordingly and add the new
-         * workqueue to workqueues list.
+         * wq_pool_mutex protects global freeze state and workqueues list.
+         * Grab it, adjust max_active and add the new @wq to workqueues
+         * list.
          */
-        spin_lock(&workqueue_lock);
+        mutex_lock(&wq_pool_mutex);
 
-        if (workqueue_freezing && wq->flags & WQ_FREEZABLE)
-                for_each_pwq_cpu(cpu, wq)
-                        get_pwq(cpu, wq)->max_active = 0;
+        mutex_lock(&wq->mutex);
+        for_each_pwq(pwq, wq)
+                pwq_adjust_max_active(pwq);
+        mutex_unlock(&wq->mutex);
 
         list_add(&wq->list, &workqueues);
 
-        spin_unlock(&workqueue_lock);
+        mutex_unlock(&wq_pool_mutex);
 
         return wq;
-err:
-        if (wq) {
-                free_pwqs(wq);
-                free_mayday_mask(wq->mayday_mask);
-                kfree(wq->rescuer);
-                kfree(wq);
-        }
+
+err_free_wq:
+        free_workqueue_attrs(wq->unbound_attrs);
+        kfree(wq);
+        return NULL;
+err_destroy:
+        destroy_workqueue(wq);
         return NULL;
 }
 EXPORT_SYMBOL_GPL(__alloc_workqueue_key);
@@ -3259,60 +4183,78 @@ EXPORT_SYMBOL_GPL(__alloc_workqueue_key);
  */
 void destroy_workqueue(struct workqueue_struct *wq)
 {
-        unsigned int cpu;
+        struct pool_workqueue *pwq;
+        int node;
 
         /* drain it before proceeding with destruction */
         drain_workqueue(wq);
 
+        /* sanity checks */
+        mutex_lock(&wq->mutex);
+        for_each_pwq(pwq, wq) {
+                int i;
+
+                for (i = 0; i < WORK_NR_COLORS; i++) {
+                        if (WARN_ON(pwq->nr_in_flight[i])) {
+                                mutex_unlock(&wq->mutex);
+                                return;
+                        }
+                }
+
+                if (WARN_ON(pwq->refcnt > 1) ||
+                    WARN_ON(pwq->nr_active) ||
+                    WARN_ON(!list_empty(&pwq->delayed_works))) {
+                        mutex_unlock(&wq->mutex);
+                        return;
+                }
+        }
+        mutex_unlock(&wq->mutex);
+
         /*
          * wq list is used to freeze wq, remove from list after
          * flushing is complete in case freeze races us.
          */
-        spin_lock(&workqueue_lock);
-        list_del(&wq->list);
-        spin_unlock(&workqueue_lock);
+        mutex_lock(&wq_pool_mutex);
+        list_del_init(&wq->list);
+        mutex_unlock(&wq_pool_mutex);
 
-        /* sanity check */
-        for_each_pwq_cpu(cpu, wq) {
-                struct pool_workqueue *pwq = get_pwq(cpu, wq);
-                int i;
+        workqueue_sysfs_unregister(wq);
 
-                for (i = 0; i < WORK_NR_COLORS; i++)
-                        BUG_ON(pwq->nr_in_flight[i]);
-                BUG_ON(pwq->nr_active);
-                BUG_ON(!list_empty(&pwq->delayed_works));
-        }
-
-        if (wq->flags & WQ_RESCUER) {
+        if (wq->rescuer) {
                 kthread_stop(wq->rescuer->task);
-                free_mayday_mask(wq->mayday_mask);
                 kfree(wq->rescuer);
+                wq->rescuer = NULL;
         }
 
-        free_pwqs(wq);
-        kfree(wq);
-}
-EXPORT_SYMBOL_GPL(destroy_workqueue);
-
-/**
- * pwq_set_max_active - adjust max_active of a pwq
- * @pwq: target pool_workqueue
- * @max_active: new max_active value.
- *
- * Set @pwq->max_active to @max_active and activate delayed works if
- * increased.
- *
- * CONTEXT:
- * spin_lock_irq(pool->lock).
- */
-static void pwq_set_max_active(struct pool_workqueue *pwq, int max_active)
-{
-        pwq->max_active = max_active;
+        if (!(wq->flags & WQ_UNBOUND)) {
+                /*
+                 * The base ref is never dropped on per-cpu pwqs.  Directly
+                 * free the pwqs and wq.
+                 */
+                free_percpu(wq->cpu_pwqs);
+                kfree(wq);
+        } else {
+                /*
+                 * We're the sole accessor of @wq at this point.  Directly
+                 * access numa_pwq_tbl[] and dfl_pwq to put the base refs.
+                 * @wq will be freed when the last pwq is released.
+                 */
+                for_each_node(node) {
+                        pwq = rcu_access_pointer(wq->numa_pwq_tbl[node]);
+                        RCU_INIT_POINTER(wq->numa_pwq_tbl[node], NULL);
+                        put_pwq_unlocked(pwq);
+                }
 
-        while (!list_empty(&pwq->delayed_works) &&
-               pwq->nr_active < pwq->max_active)
-                pwq_activate_first_delayed(pwq);
+                /*
+                 * Put dfl_pwq.  @wq may be freed any time after dfl_pwq is
+                 * put.  Don't access it afterwards.
+                 */
+                pwq = wq->dfl_pwq;
+                wq->dfl_pwq = NULL;
+                put_pwq_unlocked(pwq);
+        }
 }
+EXPORT_SYMBOL_GPL(destroy_workqueue);
 
 /**
  * workqueue_set_max_active - adjust max_active of a workqueue
@@ -3326,30 +4268,37 @@ static void pwq_set_max_active(struct pool_workqueue *pwq, int max_active)
  */
 void workqueue_set_max_active(struct workqueue_struct *wq, int max_active)
 {
-        unsigned int cpu;
+        struct pool_workqueue *pwq;
+
+        /* disallow meddling with max_active for ordered workqueues */
+        if (WARN_ON(wq->flags & __WQ_ORDERED))
+                return;
 
         max_active = wq_clamp_max_active(max_active, wq->flags, wq->name);
 
-        spin_lock(&workqueue_lock);
+        mutex_lock(&wq->mutex);
 
         wq->saved_max_active = max_active;
 
-        for_each_pwq_cpu(cpu, wq) {
-                struct pool_workqueue *pwq = get_pwq(cpu, wq);
-                struct worker_pool *pool = pwq->pool;
-
-                spin_lock_irq(&pool->lock);
+        for_each_pwq(pwq, wq)
+                pwq_adjust_max_active(pwq);
 
-                if (!(wq->flags & WQ_FREEZABLE) ||
-                    !(pool->flags & POOL_FREEZING))
-                        pwq_set_max_active(pwq, max_active);
+        mutex_unlock(&wq->mutex);
+}
+EXPORT_SYMBOL_GPL(workqueue_set_max_active);
 
-                spin_unlock_irq(&pool->lock);
-        }
+/**
+ * current_is_workqueue_rescuer - is %current workqueue rescuer?
+ *
+ * Determine whether %current is a workqueue rescuer.  Can be used from
+ * work functions to determine whether it's being run off the rescuer task.
+ */
+bool current_is_workqueue_rescuer(void)
+{
+        struct worker *worker = current_wq_worker();
 
-        spin_unlock(&workqueue_lock);
+        return worker && worker->rescue_wq;
 }
-EXPORT_SYMBOL_GPL(workqueue_set_max_active);
 
 /**
  * workqueue_congested - test whether a workqueue is congested
@@ -3363,11 +4312,22 @@ EXPORT_SYMBOL_GPL(workqueue_set_max_active);
  * RETURNS:
  * %true if congested, %false otherwise.
  */
-bool workqueue_congested(unsigned int cpu, struct workqueue_struct *wq)
+bool workqueue_congested(int cpu, struct workqueue_struct *wq)
 {
-        struct pool_workqueue *pwq = get_pwq(cpu, wq);
+        struct pool_workqueue *pwq;
+        bool ret;
+
+        rcu_read_lock_sched();
+
+        if (!(wq->flags & WQ_UNBOUND))
+                pwq = per_cpu_ptr(wq->cpu_pwqs, cpu);
+        else
+                pwq = unbound_pwq_by_node(wq, cpu_to_node(cpu));
+
+        ret = !list_empty(&pwq->delayed_works);
+        rcu_read_unlock_sched();
 
-        return !list_empty(&pwq->delayed_works);
+        return ret;
 }
 EXPORT_SYMBOL_GPL(workqueue_congested);
 
@@ -3384,19 +4344,22 @@ EXPORT_SYMBOL_GPL(workqueue_congested);
  */
 unsigned int work_busy(struct work_struct *work)
 {
-        struct worker_pool *pool = get_work_pool(work);
+        struct worker_pool *pool;
         unsigned long flags;
         unsigned int ret = 0;
 
         if (work_pending(work))
                 ret |= WORK_BUSY_PENDING;
 
+        local_irq_save(flags);
+        pool = get_work_pool(work);
         if (pool) {
-                spin_lock_irqsave(&pool->lock, flags);
+                spin_lock(&pool->lock);
                 if (find_worker_executing_work(pool, work))
                         ret |= WORK_BUSY_RUNNING;
-                spin_unlock_irqrestore(&pool->lock, flags);
+                spin_unlock(&pool->lock);
         }
+        local_irq_restore(flags);
 
         return ret;
 }
@@ -3422,53 +4385,153 @@ static void wq_unbind_fn(struct work_struct *work)
         int cpu = smp_processor_id();
         struct worker_pool *pool;
         struct worker *worker;
-        int i;
+        int wi;
 
-        for_each_std_worker_pool(pool, cpu) {
-                BUG_ON(cpu != smp_processor_id());
+        for_each_cpu_worker_pool(pool, cpu) {
+                WARN_ON_ONCE(cpu != smp_processor_id());
 
-                mutex_lock(&pool->assoc_mutex);
+                mutex_lock(&pool->manager_mutex);
                 spin_lock_irq(&pool->lock);
 
                 /*
-                 * We've claimed all manager positions.  Make all workers
+                 * We've blocked all manager operations.  Make all workers
                  * unbound and set DISASSOCIATED.  Before this, all workers
                  * except for the ones which are still executing works from
                  * before the last CPU down must be on the cpu.  After
                  * this, they may become diasporas.
                  */
-                list_for_each_entry(worker, &pool->idle_list, entry)
-                        worker->flags |= WORKER_UNBOUND;
-
-                for_each_busy_worker(worker, i, pool)
+                for_each_pool_worker(worker, wi, pool)
                         worker->flags |= WORKER_UNBOUND;
 
                 pool->flags |= POOL_DISASSOCIATED;
 
                 spin_unlock_irq(&pool->lock);
-                mutex_unlock(&pool->assoc_mutex);
+                mutex_unlock(&pool->manager_mutex);
+
+                /*
+                 * Call schedule() so that we cross rq->lock and thus can
+                 * guarantee sched callbacks see the %WORKER_UNBOUND flag.
+                 * This is necessary as scheduler callbacks may be invoked
+                 * from other cpus.
+                 */
+                schedule();
+
+                /*
+                 * Sched callbacks are disabled now.  Zap nr_running.
+                 * After this, nr_running stays zero and need_more_worker()
+                 * and keep_working() are always true as long as the
+                 * worklist is not empty.  This pool now behaves as an
+                 * unbound (in terms of concurrency management) pool which
+                 * are served by workers tied to the pool.
+                 */
+                atomic_set(&pool->nr_running, 0);
+
+                /*
+                 * With concurrency management just turned off, a busy
+                 * worker blocking could lead to lengthy stalls.  Kick off
+                 * unbound chain execution of currently pending work items.
+                 */
+                spin_lock_irq(&pool->lock);
+                wake_up_worker(pool);
+                spin_unlock_irq(&pool->lock);
         }
+}
 
-        /*
-         * Call schedule() so that we cross rq->lock and thus can guarantee
-         * sched callbacks see the %WORKER_UNBOUND flag.  This is necessary
-         * as scheduler callbacks may be invoked from other cpus.
-         */
-        schedule();
+/**
+ * rebind_workers - rebind all workers of a pool to the associated CPU
+ * @pool: pool of interest
+ *
+ * @pool->cpu is coming online.  Rebind all workers to the CPU.
+ */
+static void rebind_workers(struct worker_pool *pool)
+{
+        struct worker *worker;
+        int wi;
+
+        lockdep_assert_held(&pool->manager_mutex);
 
         /*
-         * Sched callbacks are disabled now.  Zap nr_running.  After this,
-         * nr_running stays zero and need_more_worker() and keep_working()
-         * are always true as long as the worklist is not empty.  Pools on
-         * @cpu now behave as unbound (in terms of concurrency management)
-         * pools which are served by workers tied to the CPU.
-         *
-         * On return from this function, the current worker would trigger
-         * unbound chain execution of pending work items if other workers
-         * didn't already.
+         * Restore CPU affinity of all workers.  As all idle workers should
+         * be on the run-queue of the associated CPU before any local
+         * wake-ups for concurrency management happen, restore CPU affinty
+         * of all workers first and then clear UNBOUND.  As we're called
+         * from CPU_ONLINE, the following shouldn't fail.
          */
-        for_each_std_worker_pool(pool, cpu)
-                atomic_set(&pool->nr_running, 0);
+        for_each_pool_worker(worker, wi, pool)
+                WARN_ON_ONCE(set_cpus_allowed_ptr(worker->task,
+                                                  pool->attrs->cpumask) < 0);
+
+        spin_lock_irq(&pool->lock);
+
+        for_each_pool_worker(worker, wi, pool) {
+                unsigned int worker_flags = worker->flags;
+
+                /*
+                 * A bound idle worker should actually be on the runqueue
+                 * of the associated CPU for local wake-ups targeting it to
+                 * work.  Kick all idle workers so that they migrate to the
+                 * associated CPU.  Doing this in the same loop as
+                 * replacing UNBOUND with REBOUND is safe as no worker will
+                 * be bound before @pool->lock is released.
+                 */
+                if (worker_flags & WORKER_IDLE)
+                        wake_up_process(worker->task);
+
+                /*
+                 * We want to clear UNBOUND but can't directly call
+                 * worker_clr_flags() or adjust nr_running.  Atomically
+                 * replace UNBOUND with another NOT_RUNNING flag REBOUND.
+                 * @worker will clear REBOUND using worker_clr_flags() when
+                 * it initiates the next execution cycle thus restoring
+                 * concurrency management.  Note that when or whether
+                 * @worker clears REBOUND doesn't affect correctness.
+                 *
+                 * ACCESS_ONCE() is necessary because @worker->flags may be
+                 * tested without holding any lock in
+                 * wq_worker_waking_up().  Without it, NOT_RUNNING test may
+                 * fail incorrectly leading to premature concurrency
+                 * management operations.
+                 */
+                WARN_ON_ONCE(!(worker_flags & WORKER_UNBOUND));
+                worker_flags |= WORKER_REBOUND;
+                worker_flags &= ~WORKER_UNBOUND;
+                ACCESS_ONCE(worker->flags) = worker_flags;
+        }
+
+        spin_unlock_irq(&pool->lock);
+}
+
+/**
+ * restore_unbound_workers_cpumask - restore cpumask of unbound workers
+ * @pool: unbound pool of interest
+ * @cpu: the CPU which is coming up
+ *
+ * An unbound pool may end up with a cpumask which doesn't have any online
+ * CPUs.  When a worker of such pool get scheduled, the scheduler resets
+ * its cpus_allowed.  If @cpu is in @pool's cpumask which didn't have any
+ * online CPU before, cpus_allowed of all its workers should be restored.
+ */
+static void restore_unbound_workers_cpumask(struct worker_pool *pool, int cpu)
+{
+        static cpumask_t cpumask;
+        struct worker *worker;
+        int wi;
+
+        lockdep_assert_held(&pool->manager_mutex);
+
+        /* is @cpu allowed for @pool? */
+        if (!cpumask_test_cpu(cpu, pool->attrs->cpumask))
+                return;
+
+        /* is @cpu the only online CPU? */
+        cpumask_and(&cpumask, pool->attrs->cpumask, cpu_online_mask);
+        if (cpumask_weight(&cpumask) != 1)
+                return;
+
+        /* as we're called from CPU_ONLINE, the following shouldn't fail */
+        for_each_pool_worker(worker, wi, pool)
+                WARN_ON_ONCE(set_cpus_allowed_ptr(worker->task,
+                                                  pool->attrs->cpumask) < 0);
 }
 
 /*
@@ -3479,39 +4542,46 @@ static int __cpuinit workqueue_cpu_up_callback(struct notifier_block *nfb,
                                                unsigned long action,
                                                void *hcpu)
 {
-        unsigned int cpu = (unsigned long)hcpu;
+        int cpu = (unsigned long)hcpu;
         struct worker_pool *pool;
+        struct workqueue_struct *wq;
+        int pi;
 
         switch (action & ~CPU_TASKS_FROZEN) {
         case CPU_UP_PREPARE:
-                for_each_std_worker_pool(pool, cpu) {
-                        struct worker *worker;
-
+                for_each_cpu_worker_pool(pool, cpu) {
                         if (pool->nr_workers)
                                 continue;
-
-                        worker = create_worker(pool);
-                        if (!worker)
+                        if (create_and_start_worker(pool) < 0)
                                 return NOTIFY_BAD;
-
-                        spin_lock_irq(&pool->lock);
-                        start_worker(worker);
-                        spin_unlock_irq(&pool->lock);
                 }
                 break;
 
         case CPU_DOWN_FAILED:
         case CPU_ONLINE:
-                for_each_std_worker_pool(pool, cpu) {
-                        mutex_lock(&pool->assoc_mutex);
-                        spin_lock_irq(&pool->lock);
+                mutex_lock(&wq_pool_mutex);
 
-                        pool->flags &= ~POOL_DISASSOCIATED;
-                        rebind_workers(pool);
+                for_each_pool(pool, pi) {
+                        mutex_lock(&pool->manager_mutex);
+
+                        if (pool->cpu == cpu) {
+                                spin_lock_irq(&pool->lock);
+                                pool->flags &= ~POOL_DISASSOCIATED;
+                                spin_unlock_irq(&pool->lock);
+
+                                rebind_workers(pool);
+                        } else if (pool->cpu < 0) {
+                                restore_unbound_workers_cpumask(pool, cpu);
+                        }
 
-                        spin_unlock_irq(&pool->lock);
-                        mutex_unlock(&pool->assoc_mutex);
+                        mutex_unlock(&pool->manager_mutex);
                 }
+
+                /* update NUMA affinity of unbound workqueues */
+                list_for_each_entry(wq, &workqueues, list)
+                        wq_update_unbound_numa(wq, cpu, true);
+
+                mutex_unlock(&wq_pool_mutex);
                 break;
         }
         return NOTIFY_OK;
@@ -3525,14 +4595,23 @@ static int __cpuinit workqueue_cpu_down_callback(struct notifier_block *nfb,
                                                  unsigned long action,
                                                  void *hcpu)
 {
-        unsigned int cpu = (unsigned long)hcpu;
+        int cpu = (unsigned long)hcpu;
         struct work_struct unbind_work;
+        struct workqueue_struct *wq;
 
         switch (action & ~CPU_TASKS_FROZEN) {
         case CPU_DOWN_PREPARE:
-                /* unbinding should happen on the local CPU */
+                /* unbinding per-cpu workers should happen on the local CPU */
                 INIT_WORK_ONSTACK(&unbind_work, wq_unbind_fn);
                 queue_work_on(cpu, system_highpri_wq, &unbind_work);
+
+                /* update NUMA affinity of unbound workqueues */
+                mutex_lock(&wq_pool_mutex);
+                list_for_each_entry(wq, &workqueues, list)
+                        wq_update_unbound_numa(wq, cpu, false);
+                mutex_unlock(&wq_pool_mutex);
+
+                /* wait for per-cpu unbinding to finish */
                 flush_work(&unbind_work);
                 break;
         }
@@ -3565,7 +4644,7 @@ static void work_for_cpu_fn(struct work_struct *work)
  * It is up to the caller to ensure that the cpu doesn't go offline.
  * The caller must not hold any locks which would prevent @fn from completing.
  */
-long work_on_cpu(unsigned int cpu, long (*fn)(void *), void *arg)
+long work_on_cpu(int cpu, long (*fn)(void *), void *arg)
 {
         struct work_for_cpu wfc = { .fn = fn, .arg = arg };
 
@@ -3583,44 +4662,40 @@ EXPORT_SYMBOL_GPL(work_on_cpu);
  * freeze_workqueues_begin - begin freezing workqueues
  *
  * Start freezing workqueues.  After this function returns, all freezable
- * workqueues will queue new works to their frozen_works list instead of
+ * workqueues will queue new works to their delayed_works list instead of
  * pool->worklist.
  *
  * CONTEXT:
- * Grabs and releases workqueue_lock and pool->lock's.
+ * Grabs and releases wq_pool_mutex, wq->mutex and pool->lock's.
  */
 void freeze_workqueues_begin(void)
 {
-        unsigned int cpu;
+        struct worker_pool *pool;
+        struct workqueue_struct *wq;
+        struct pool_workqueue *pwq;
+        int pi;
 
-        spin_lock(&workqueue_lock);
+        mutex_lock(&wq_pool_mutex);
 
-        BUG_ON(workqueue_freezing);
+        WARN_ON_ONCE(workqueue_freezing);
         workqueue_freezing = true;
 
-        for_each_wq_cpu(cpu) {
-                struct worker_pool *pool;
-                struct workqueue_struct *wq;
-
-                for_each_std_worker_pool(pool, cpu) {
-                        spin_lock_irq(&pool->lock);
-
-                        WARN_ON_ONCE(pool->flags & POOL_FREEZING);
-                        pool->flags |= POOL_FREEZING;
-
-                        list_for_each_entry(wq, &workqueues, list) {
-                                struct pool_workqueue *pwq = get_pwq(cpu, wq);
-
-                                if (pwq && pwq->pool == pool &&
-                                    (wq->flags & WQ_FREEZABLE))
-                                        pwq->max_active = 0;
-                        }
+        /* set FREEZING */
+        for_each_pool(pool, pi) {
+                spin_lock_irq(&pool->lock);
+                WARN_ON_ONCE(pool->flags & POOL_FREEZING);
+                pool->flags |= POOL_FREEZING;
+                spin_unlock_irq(&pool->lock);
+        }
 
-                        spin_unlock_irq(&pool->lock);
-                }
+        list_for_each_entry(wq, &workqueues, list) {
+                mutex_lock(&wq->mutex);
+                for_each_pwq(pwq, wq)
+                        pwq_adjust_max_active(pwq);
+                mutex_unlock(&wq->mutex);
         }
 
-        spin_unlock(&workqueue_lock);
+        mutex_unlock(&wq_pool_mutex);
 }
 
 /**
@@ -3630,7 +4705,7 @@ void freeze_workqueues_begin(void)
  * between freeze_workqueues_begin() and thaw_workqueues().
  *
  * CONTEXT:
- * Grabs and releases workqueue_lock.
+ * Grabs and releases wq_pool_mutex.
  *
  * RETURNS:
  * %true if some freezable workqueues are still busy.  %false if freezing
@@ -3638,34 +4713,34 @@ void freeze_workqueues_begin(void)
  */
 bool freeze_workqueues_busy(void)
 {
-        unsigned int cpu;
         bool busy = false;
+        struct workqueue_struct *wq;
+        struct pool_workqueue *pwq;
 
-        spin_lock(&workqueue_lock);
+        mutex_lock(&wq_pool_mutex);
 
-        BUG_ON(!workqueue_freezing);
+        WARN_ON_ONCE(!workqueue_freezing);
 
-        for_each_wq_cpu(cpu) {
-                struct workqueue_struct *wq;
+        list_for_each_entry(wq, &workqueues, list) {
+                if (!(wq->flags & WQ_FREEZABLE))
+                        continue;
                 /*
                  * nr_active is monotonically decreasing.  It's safe
                  * to peek without lock.
                  */
-                list_for_each_entry(wq, &workqueues, list) {
-                        struct pool_workqueue *pwq = get_pwq(cpu, wq);
-
-                        if (!pwq || !(wq->flags & WQ_FREEZABLE))
-                                continue;
-
-                        BUG_ON(pwq->nr_active < 0);
+                rcu_read_lock_sched();
+                for_each_pwq(pwq, wq) {
+                        WARN_ON_ONCE(pwq->nr_active < 0);
                         if (pwq->nr_active) {
                                 busy = true;
+                                rcu_read_unlock_sched();
                                 goto out_unlock;
                         }
                 }
+                rcu_read_unlock_sched();
         }
 out_unlock:
-        spin_unlock(&workqueue_lock);
+        mutex_unlock(&wq_pool_mutex);
         return busy;
 }
 
@@ -3676,104 +4751,141 @@ out_unlock:
  * frozen works are transferred to their respective pool worklists.
  *
  * CONTEXT:
- * Grabs and releases workqueue_lock and pool->lock's.
+ * Grabs and releases wq_pool_mutex, wq->mutex and pool->lock's.
  */
 void thaw_workqueues(void)
 {
-        unsigned int cpu;
+        struct workqueue_struct *wq;
+        struct pool_workqueue *pwq;
+        struct worker_pool *pool;
+        int pi;
 
-        spin_lock(&workqueue_lock);
+        mutex_lock(&wq_pool_mutex);
 
         if (!workqueue_freezing)
                 goto out_unlock;
 
-        for_each_wq_cpu(cpu) {
-                struct worker_pool *pool;
-                struct workqueue_struct *wq;
+        /* clear FREEZING */
+        for_each_pool(pool, pi) {
+                spin_lock_irq(&pool->lock);
+                WARN_ON_ONCE(!(pool->flags & POOL_FREEZING));
+                pool->flags &= ~POOL_FREEZING;
+                spin_unlock_irq(&pool->lock);
+        }
 
-                for_each_std_worker_pool(pool, cpu) {
-                        spin_lock_irq(&pool->lock);
+        /* restore max_active and repopulate worklist */
+        list_for_each_entry(wq, &workqueues, list) {
+                mutex_lock(&wq->mutex);
+                for_each_pwq(pwq, wq)
+                        pwq_adjust_max_active(pwq);
+                mutex_unlock(&wq->mutex);
+        }
+
+        workqueue_freezing = false;
+out_unlock:
+        mutex_unlock(&wq_pool_mutex);
+}
+#endif /* CONFIG_FREEZER */
 
-                        WARN_ON_ONCE(!(pool->flags & POOL_FREEZING));
-                        pool->flags &= ~POOL_FREEZING;
+static void __init wq_numa_init(void)
+{
+        cpumask_var_t *tbl;
+        int node, cpu;
 
-                        list_for_each_entry(wq, &workqueues, list) {
-                                struct pool_workqueue *pwq = get_pwq(cpu, wq);
+        /* determine NUMA pwq table len - highest node id + 1 */
+        for_each_node(node)
+                wq_numa_tbl_len = max(wq_numa_tbl_len, node + 1);
 
-                                if (!pwq || pwq->pool != pool ||
-                                    !(wq->flags & WQ_FREEZABLE))
-                                        continue;
+        if (num_possible_nodes() <= 1)
+                return;
 
-                                /* restore max_active and repopulate worklist */
-                                pwq_set_max_active(pwq, wq->saved_max_active);
-                        }
+        if (wq_disable_numa) {
+                pr_info("workqueue: NUMA affinity support disabled\n");
+                return;
+        }
 
-                        wake_up_worker(pool);
+        wq_update_unbound_numa_attrs_buf = alloc_workqueue_attrs(GFP_KERNEL);
+        BUG_ON(!wq_update_unbound_numa_attrs_buf);
 
-                        spin_unlock_irq(&pool->lock);
+        /*
+         * We want masks of possible CPUs of each node which isn't readily
+         * available.  Build one from cpu_to_node() which should have been
+         * fully initialized by now.
+         */
+        tbl = kzalloc(wq_numa_tbl_len * sizeof(tbl[0]), GFP_KERNEL);
+        BUG_ON(!tbl);
+
+        for_each_node(node)
+                BUG_ON(!alloc_cpumask_var_node(&tbl[node], GFP_KERNEL, node));
+
+        for_each_possible_cpu(cpu) {
+                node = cpu_to_node(cpu);
+                if (WARN_ON(node == NUMA_NO_NODE)) {
+                        pr_warn("workqueue: NUMA node mapping not available for cpu%d, disabling NUMA support\n", cpu);
+                        /* happens iff arch is bonkers, let's just proceed */
+                        return;
                 }
+                cpumask_set_cpu(cpu, tbl[node]);
         }
 
-        workqueue_freezing = false;
-out_unlock:
-        spin_unlock(&workqueue_lock);
+        wq_numa_possible_cpumask = tbl;
+        wq_numa_enabled = true;
 }
-#endif /* CONFIG_FREEZER */
 
 static int __init init_workqueues(void)
 {
-        unsigned int cpu;
+        int std_nice[NR_STD_WORKER_POOLS] = { 0, HIGHPRI_NICE_LEVEL };
+        int i, cpu;
 
         /* make sure we have enough bits for OFFQ pool ID */
         BUILD_BUG_ON((1LU << (BITS_PER_LONG - WORK_OFFQ_POOL_SHIFT)) <
                      WORK_CPU_END * NR_STD_WORKER_POOLS);
 
+        WARN_ON(__alignof__(struct pool_workqueue) < __alignof__(long long));
+
+        pwq_cache = KMEM_CACHE(pool_workqueue, SLAB_PANIC);
+
         cpu_notifier(workqueue_cpu_up_callback, CPU_PRI_WORKQUEUE_UP);
         hotcpu_notifier(workqueue_cpu_down_callback, CPU_PRI_WORKQUEUE_DOWN);
 
+        wq_numa_init();
+
         /* initialize CPU pools */
-        for_each_wq_cpu(cpu) {
+        for_each_possible_cpu(cpu) {
                 struct worker_pool *pool;
 
-                for_each_std_worker_pool(pool, cpu) {
-                        spin_lock_init(&pool->lock);
+                i = 0;
+                for_each_cpu_worker_pool(pool, cpu) {
+                        BUG_ON(init_worker_pool(pool));
                         pool->cpu = cpu;
-                        pool->flags |= POOL_DISASSOCIATED;
-                        INIT_LIST_HEAD(&pool->worklist);
-                        INIT_LIST_HEAD(&pool->idle_list);
-                        hash_init(pool->busy_hash);
-
-                        init_timer_deferrable(&pool->idle_timer);
-                        pool->idle_timer.function = idle_worker_timeout;
-                        pool->idle_timer.data = (unsigned long)pool;
-
-                        setup_timer(&pool->mayday_timer, pool_mayday_timeout,
-                                    (unsigned long)pool);
-
-                        mutex_init(&pool->assoc_mutex);
-                        ida_init(&pool->worker_ida);
+                        cpumask_copy(pool->attrs->cpumask, cpumask_of(cpu));
+                        pool->attrs->nice = std_nice[i++];
+                        pool->node = cpu_to_node(cpu);
 
                         /* alloc pool ID */
+                        mutex_lock(&wq_pool_mutex);
                         BUG_ON(worker_pool_assign_id(pool));
+                        mutex_unlock(&wq_pool_mutex);
                 }
         }
 
         /* create the initial worker */
-        for_each_online_wq_cpu(cpu) {
+        for_each_online_cpu(cpu) {
                 struct worker_pool *pool;
 
-                for_each_std_worker_pool(pool, cpu) {
-                        struct worker *worker;
+                for_each_cpu_worker_pool(pool, cpu) {
+                        pool->flags &= ~POOL_DISASSOCIATED;
+                        BUG_ON(create_and_start_worker(pool) < 0);
+                }
+        }
 
-                        if (cpu != WORK_CPU_UNBOUND)
-                                pool->flags &= ~POOL_DISASSOCIATED;
+        /* create default unbound wq attrs */
+        for (i = 0; i < NR_STD_WORKER_POOLS; i++) {
+                struct workqueue_attrs *attrs;
 
-                        worker = create_worker(pool);
-                        BUG_ON(!worker);
-                        spin_lock_irq(&pool->lock);
-                        start_worker(worker);
-                        spin_unlock_irq(&pool->lock);
-                }
+                BUG_ON(!(attrs = alloc_workqueue_attrs(GFP_KERNEL)));
+                attrs->nice = std_nice[i];
+                unbound_std_wq_attrs[i] = attrs;
         }
 
         system_wq = alloc_workqueue("events", 0, 0);
diff --git a/kernel/workqueue_internal.h b/kernel/workqueue_internal.h
index 07650264ec15..84ab6e1dc6fb 100644
--- a/kernel/workqueue_internal.h
+++ b/kernel/workqueue_internal.h
@@ -32,14 +32,12 @@ struct worker {
         struct list_head        scheduled;      /* L: scheduled works */
         struct task_struct      *task;          /* I: worker task */
         struct worker_pool      *pool;          /* I: the associated pool */
+                                                /* L: for rescuers */
         /* 64 bytes boundary on 64bit, 32 on 32bit */
         unsigned long           last_active;    /* L: last active timestamp */
         unsigned int            flags;          /* X: flags */
         int                     id;             /* I: worker id */
 
-        /* for rebinding worker to CPU */
-        struct work_struct      rebind_work;    /* L: for busy worker */
-
         /* used only by rescuers to point to the target workqueue */
         struct workqueue_struct *rescue_wq;     /* I: the workqueue to rescue */
 };
@@ -58,8 +56,7 @@ static inline struct worker *current_wq_worker(void)
  * Scheduler hooks for concurrency managed workqueue.  Only to be used from
  * sched.c and workqueue.c.
  */
-void wq_worker_waking_up(struct task_struct *task, unsigned int cpu);
-struct task_struct *wq_worker_sleeping(struct task_struct *task,
-                                       unsigned int cpu);
+void wq_worker_waking_up(struct task_struct *task, int cpu);
+struct task_struct *wq_worker_sleeping(struct task_struct *task, int cpu);
 
 #endif /* _KERNEL_WORKQUEUE_INTERNAL_H */
diff --git a/lib/bust_spinlocks.c b/lib/bust_spinlocks.c
index 9681d54b95d1..f8e0e5367398 100644
--- a/lib/bust_spinlocks.c
+++ b/lib/bust_spinlocks.c
@@ -8,6 +8,7 @@
  */
 
 #include <linux/kernel.h>
+#include <linux/printk.h>
 #include <linux/spinlock.h>
 #include <linux/tty.h>
 #include <linux/wait.h>
@@ -28,5 +29,3 @@ void __attribute__((weak)) bust_spinlocks(int yes)
                         wake_up_klogd();
         }
 }
-
-
diff --git a/lib/dma-debug.c b/lib/dma-debug.c
index 5e396accd3d0..d87a17a819d0 100644
--- a/lib/dma-debug.c
+++ b/lib/dma-debug.c
@@ -862,17 +862,21 @@ static void check_unmap(struct dma_debug_entry *ref)
         entry = bucket_find_exact(bucket, ref);
 
         if (!entry) {
+                /* must drop lock before calling dma_mapping_error */
+                put_hash_bucket(bucket, &flags);
+
                 if (dma_mapping_error(ref->dev, ref->dev_addr)) {
                         err_printk(ref->dev, NULL,
-                                   "DMA-API: device driver tries "
-                                   "to free an invalid DMA memory address\n");
-                        return;
+                                   "DMA-API: device driver tries to free an "
+                                   "invalid DMA memory address\n");
+                } else {
+                        err_printk(ref->dev, NULL,
+                                   "DMA-API: device driver tries to free DMA "
+                                   "memory it has not allocated [device "
+                                   "address=0x%016llx] [size=%llu bytes]\n",
+                                   ref->dev_addr, ref->size);
                 }
-                err_printk(ref->dev, NULL, "DMA-API: device driver tries "
-                           "to free DMA memory it has not allocated "
-                           "[device address=0x%016llx] [size=%llu bytes]\n",
-                           ref->dev_addr, ref->size);
-                goto out;
+                return;
         }
 
         if (ref->size != entry->size) {
@@ -936,7 +940,6 @@ static void check_unmap(struct dma_debug_entry *ref)
         hash_bucket_del(entry);
         dma_entry_free(entry);
 
-out:
         put_hash_bucket(bucket, &flags);
 }
 
@@ -1082,13 +1085,27 @@ void debug_dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
         ref.dev = dev;
         ref.dev_addr = dma_addr;
         bucket = get_hash_bucket(&ref, &flags);
-        entry = bucket_find_exact(bucket, &ref);
 
-        if (!entry)
-                goto out;
+        list_for_each_entry(entry, &bucket->list, list) {
+                if (!exact_match(&ref, entry))
+                        continue;
+
+                /*
+                 * The same physical address can be mapped multiple
+                 * times. Without a hardware IOMMU this results in the
+                 * same device addresses being put into the dma-debug
+                 * hash multiple times too. This can result in false
+                 * positives being reported. Therefore we implement a
+                 * best-fit algorithm here which updates the first entry
+                 * from the hash which fits the reference value and is
+                 * not currently listed as being checked.
+                 */
+                if (entry->map_err_type == MAP_ERR_NOT_CHECKED) {
+                        entry->map_err_type = MAP_ERR_CHECKED;
+                        break;
+                }
+        }
 
-        entry->map_err_type = MAP_ERR_CHECKED;
-out:
         put_hash_bucket(bucket, &flags);
 }
 EXPORT_SYMBOL(debug_dma_mapping_error);
diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index 41733c5dc820..502517492258 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -31,13 +31,14 @@ EXPORT_SYMBOL_GPL(noop_backing_dev_info);
 static struct class *bdi_class;
 
 /*
- * bdi_lock protects updates to bdi_list and bdi_pending_list, as well as
- * reader side protection for bdi_pending_list. bdi_list has RCU reader side
+ * bdi_lock protects updates to bdi_list. bdi_list has RCU reader side
  * locking.
  */
 DEFINE_SPINLOCK(bdi_lock);
 LIST_HEAD(bdi_list);
-LIST_HEAD(bdi_pending_list);
+
+/* bdi_wq serves all asynchronous writeback tasks */
+struct workqueue_struct *bdi_wq;
 
 void bdi_lock_two(struct bdi_writeback *wb1, struct bdi_writeback *wb2)
 {
@@ -257,6 +258,11 @@ static int __init default_bdi_init(void)
 {
         int err;
 
+        bdi_wq = alloc_workqueue("writeback", WQ_MEM_RECLAIM | WQ_FREEZABLE |
+                                              WQ_UNBOUND | WQ_SYSFS, 0);
+        if (!bdi_wq)
+                return -ENOMEM;
+
         err = bdi_init(&default_backing_dev_info);
         if (!err)
                 bdi_register(&default_backing_dev_info, NULL, "default");
@@ -271,26 +277,6 @@ int bdi_has_dirty_io(struct backing_dev_info *bdi)
         return wb_has_dirty_io(&bdi->wb);
 }
 
-static void wakeup_timer_fn(unsigned long data)
-{
-        struct backing_dev_info *bdi = (struct backing_dev_info *)data;
-
-        spin_lock_bh(&bdi->wb_lock);
-        if (bdi->wb.task) {
-                trace_writeback_wake_thread(bdi);
-                wake_up_process(bdi->wb.task);
-        } else if (bdi->dev) {
-                /*
-                 * When bdi tasks are inactive for long time, they are killed.
-                 * In this case we have to wake-up the forker thread which
-                 * should create and run the bdi thread.
-                 */
-                trace_writeback_wake_forker_thread(bdi);
-                wake_up_process(default_backing_dev_info.wb.task);
-        }
-        spin_unlock_bh(&bdi->wb_lock);
-}
-
 /*
  * This function is used when the first inode for this bdi is marked dirty. It
  * wakes-up the corresponding bdi thread which should then take care of the
@@ -307,176 +293,7 @@ void bdi_wakeup_thread_delayed(struct backing_dev_info *bdi)
         unsigned long timeout;
 
         timeout = msecs_to_jiffies(dirty_writeback_interval * 10);
-        mod_timer(&bdi->wb.wakeup_timer, jiffies + timeout);
-}
-
-/*
- * Calculate the longest interval (jiffies) bdi threads are allowed to be
- * inactive.
- */
-static unsigned long bdi_longest_inactive(void)
-{
-        unsigned long interval;
-
-        interval = msecs_to_jiffies(dirty_writeback_interval * 10);
-        return max(5UL * 60 * HZ, interval);
-}
-
-/*
- * Clear pending bit and wakeup anybody waiting for flusher thread creation or
- * shutdown
- */
-static void bdi_clear_pending(struct backing_dev_info *bdi)
-{
-        clear_bit(BDI_pending, &bdi->state);
-        smp_mb__after_clear_bit();
-        wake_up_bit(&bdi->state, BDI_pending);
-}
-
-static int bdi_forker_thread(void *ptr)
-{
-        struct bdi_writeback *me = ptr;
-
-        current->flags |= PF_SWAPWRITE;
-        set_freezable();
-
-        /*
-         * Our parent may run at a different priority, just set us to normal
-         */
-        set_user_nice(current, 0);
-
-        for (;;) {
-                struct task_struct *task = NULL;
-                struct backing_dev_info *bdi;
-                enum {
-                        NO_ACTION,   /* Nothing to do */
-                        FORK_THREAD, /* Fork bdi thread */
-                        KILL_THREAD, /* Kill inactive bdi thread */
-                } action = NO_ACTION;
-
-                /*
-                 * Temporary measure, we want to make sure we don't see
-                 * dirty data on the default backing_dev_info
-                 */
-                if (wb_has_dirty_io(me) || !list_empty(&me->bdi->work_list)) {
-                        del_timer(&me->wakeup_timer);
-                        wb_do_writeback(me, 0);
-                }
-
-                spin_lock_bh(&bdi_lock);
-                /*
-                 * In the following loop we are going to check whether we have
-                 * some work to do without any synchronization with tasks
-                 * waking us up to do work for them. Set the task state here
-                 * so that we don't miss wakeups after verifying conditions.
-                 */
-                set_current_state(TASK_INTERRUPTIBLE);
-
-                list_for_each_entry(bdi, &bdi_list, bdi_list) {
-                        bool have_dirty_io;
-
-                        if (!bdi_cap_writeback_dirty(bdi) ||
-                             bdi_cap_flush_forker(bdi))
-                                continue;
-
-                        WARN(!test_bit(BDI_registered, &bdi->state),
-                             "bdi %p/%s is not registered!\n", bdi, bdi->name);
-
-                        have_dirty_io = !list_empty(&bdi->work_list) ||
-                                        wb_has_dirty_io(&bdi->wb);
-
-                        /*
-                         * If the bdi has work to do, but the thread does not
-                         * exist - create it.
-                         */
-                        if (!bdi->wb.task && have_dirty_io) {
-                                /*
-                                 * Set the pending bit - if someone will try to
-                                 * unregister this bdi - it'll wait on this bit.
-                                 */
-                                set_bit(BDI_pending, &bdi->state);
-                                action = FORK_THREAD;
-                                break;
-                        }
-
-                        spin_lock(&bdi->wb_lock);
-
-                        /*
-                         * If there is no work to do and the bdi thread was
-                         * inactive long enough - kill it. The wb_lock is taken
-                         * to make sure no-one adds more work to this bdi and
-                         * wakes the bdi thread up.
-                         */
-                        if (bdi->wb.task && !have_dirty_io &&
-                            time_after(jiffies, bdi->wb.last_active +
-                                                bdi_longest_inactive())) {
-                                task = bdi->wb.task;
-                                bdi->wb.task = NULL;
-                                spin_unlock(&bdi->wb_lock);
-                                set_bit(BDI_pending, &bdi->state);
-                                action = KILL_THREAD;
-                                break;
-                        }
-                        spin_unlock(&bdi->wb_lock);
-                }
-                spin_unlock_bh(&bdi_lock);
-
-                /* Keep working if default bdi still has things to do */
-                if (!list_empty(&me->bdi->work_list))
-                        __set_current_state(TASK_RUNNING);
-
-                switch (action) {
-                case FORK_THREAD:
-                        __set_current_state(TASK_RUNNING);
-                        task = kthread_create(bdi_writeback_thread, &bdi->wb,
-                                              "flush-%s", dev_name(bdi->dev));
-                        if (IS_ERR(task)) {
-                                /*
-                                 * If thread creation fails, force writeout of
-                                 * the bdi from the thread. Hopefully 1024 is
-                                 * large enough for efficient IO.
-                                 */
-                                writeback_inodes_wb(&bdi->wb, 1024,
-                                                    WB_REASON_FORKER_THREAD);
-                        } else {
-                                /*
-                                 * The spinlock makes sure we do not lose
-                                 * wake-ups when racing with 'bdi_queue_work()'.
-                                 * And as soon as the bdi thread is visible, we
-                                 * can start it.
-                                 */
-                                spin_lock_bh(&bdi->wb_lock);
-                                bdi->wb.task = task;
-                                spin_unlock_bh(&bdi->wb_lock);
-                                wake_up_process(task);
-                        }
-                        bdi_clear_pending(bdi);
-                        break;
-
-                case KILL_THREAD:
-                        __set_current_state(TASK_RUNNING);
-                        kthread_stop(task);
-                        bdi_clear_pending(bdi);
-                        break;
-
-                case NO_ACTION:
-                        if (!wb_has_dirty_io(me) || !dirty_writeback_interval)
-                                /*
-                                 * There are no dirty data. The only thing we
-                                 * should now care about is checking for
-                                 * inactive bdi threads and killing them. Thus,
-                                 * let's sleep for longer time, save energy and
-                                 * be friendly for battery-driven devices.
-                                 */
-                                schedule_timeout(bdi_longest_inactive());
-                        else
-                                schedule_timeout(msecs_to_jiffies(dirty_writeback_interval * 10));
-                        try_to_freeze();
-                        break;
-                }
-        }
-
-        return 0;
+        mod_delayed_work(bdi_wq, &bdi->wb.dwork, timeout);
 }
 
 /*
@@ -489,6 +306,9 @@ static void bdi_remove_from_list(struct backing_dev_info *bdi)
         spin_unlock_bh(&bdi_lock);
 
         synchronize_rcu_expedited();
+
+        /* bdi_list is now unused, clear it to mark @bdi dying */
+        INIT_LIST_HEAD(&bdi->bdi_list);
 }
 
 int bdi_register(struct backing_dev_info *bdi, struct device *parent,
@@ -508,20 +328,6 @@ int bdi_register(struct backing_dev_info *bdi, struct device *parent,
 
         bdi->dev = dev;
 
-        /*
-         * Just start the forker thread for our default backing_dev_info,
-         * and add other bdi's to the list. They will get a thread created
-         * on-demand when they need it.
-         */
-        if (bdi_cap_flush_forker(bdi)) {
-                struct bdi_writeback *wb = &bdi->wb;
-
-                wb->task = kthread_run(bdi_forker_thread, wb, "bdi-%s",
-                                                dev_name(dev));
-                if (IS_ERR(wb->task))
-                        return PTR_ERR(wb->task);
-        }
-
         bdi_debug_register(bdi, dev_name(dev));
         set_bit(BDI_registered, &bdi->state);
 
@@ -545,8 +351,6 @@ EXPORT_SYMBOL(bdi_register_dev);
  */
 static void bdi_wb_shutdown(struct backing_dev_info *bdi)
 {
-        struct task_struct *task;
-
         if (!bdi_cap_writeback_dirty(bdi))
                 return;
 
@@ -556,22 +360,20 @@ static void bdi_wb_shutdown(struct backing_dev_info *bdi)
         bdi_remove_from_list(bdi);
 
         /*
-         * If setup is pending, wait for that to complete first
+         * Drain work list and shutdown the delayed_work.  At this point,
+         * @bdi->bdi_list is empty telling bdi_Writeback_workfn() that @bdi
+         * is dying and its work_list needs to be drained no matter what.
          */
-        wait_on_bit(&bdi->state, BDI_pending, bdi_sched_wait,
-                        TASK_UNINTERRUPTIBLE);
+        mod_delayed_work(bdi_wq, &bdi->wb.dwork, 0);
+        flush_delayed_work(&bdi->wb.dwork);
+        WARN_ON(!list_empty(&bdi->work_list));
 
         /*
-         * Finally, kill the kernel thread. We don't need to be RCU
-         * safe anymore, since the bdi is gone from visibility.
+         * This shouldn't be necessary unless @bdi for some reason has
+         * unflushed dirty IO after work_list is drained.  Do it anyway
+         * just in case.
          */
-        spin_lock_bh(&bdi->wb_lock);
-        task = bdi->wb.task;
-        bdi->wb.task = NULL;
-        spin_unlock_bh(&bdi->wb_lock);
-
-        if (task)
-                kthread_stop(task);
+        cancel_delayed_work_sync(&bdi->wb.dwork);
 }
 
 /*
@@ -597,10 +399,8 @@ void bdi_unregister(struct backing_dev_info *bdi)
                 bdi_set_min_ratio(bdi, 0);
                 trace_writeback_bdi_unregister(bdi);
                 bdi_prune_sb(bdi);
-                del_timer_sync(&bdi->wb.wakeup_timer);
 
-                if (!bdi_cap_flush_forker(bdi))
-                        bdi_wb_shutdown(bdi);
+                bdi_wb_shutdown(bdi);
                 bdi_debug_unregister(bdi);
 
                 spin_lock_bh(&bdi->wb_lock);
@@ -622,7 +422,7 @@ static void bdi_wb_init(struct bdi_writeback *wb, struct backing_dev_info *bdi)
         INIT_LIST_HEAD(&wb->b_io);
         INIT_LIST_HEAD(&wb->b_more_io);
         spin_lock_init(&wb->list_lock);
-        setup_timer(&wb->wakeup_timer, wakeup_timer_fn, (unsigned long)bdi);
+        INIT_DELAYED_WORK(&wb->dwork, bdi_writeback_workfn);
 }
 
 /*
@@ -695,12 +495,11 @@ void bdi_destroy(struct backing_dev_info *bdi)
         bdi_unregister(bdi);
 
         /*
-         * If bdi_unregister() had already been called earlier, the
-         * wakeup_timer could still be armed because bdi_prune_sb()
-         * can race with the bdi_wakeup_thread_delayed() calls from
-         * __mark_inode_dirty().
+         * If bdi_unregister() had already been called earlier, the dwork
+         * could still be pending because bdi_prune_sb() can race with the
+         * bdi_wakeup_thread_delayed() calls from __mark_inode_dirty().
          */
-        del_timer_sync(&bdi->wb.wakeup_timer);
+        cancel_delayed_work_sync(&bdi->wb.dwork);
 
         for (i = 0; i < NR_BDI_STAT_ITEMS; i++)
                 percpu_counter_destroy(&bdi->bdi_stat[i]);
diff --git a/mm/fremap.c b/mm/fremap.c
index 4723ac8d2fc2..87da3590c61e 100644
--- a/mm/fremap.c
+++ b/mm/fremap.c
@@ -204,10 +204,8 @@ get_write_lock:
                         unsigned long addr;
                         struct file *file = get_file(vma->vm_file);
 
-                        vm_flags = vma->vm_flags;
-                        if (!(flags & MAP_NONBLOCK))
-                                vm_flags |= VM_POPULATE;
-                        addr = mmap_region(file, start, size, vm_flags, pgoff);
+                        addr = mmap_region(file, start, size,
+                                        vma->vm_flags, pgoff);
                         fput(file);
                         if (IS_ERR_VALUE(addr)) {
                                 err = addr;
@@ -226,12 +224,6 @@ get_write_lock:
                 mutex_unlock(&mapping->i_mmap_mutex);
         }
 
-        if (!(flags & MAP_NONBLOCK) && !(vma->vm_flags & VM_POPULATE)) {
-                if (!has_write_lock)
-                        goto get_write_lock;
-                vma->vm_flags |= VM_POPULATE;
-        }
-
         if (vma->vm_flags & VM_LOCKED) {
                 /*
                  * drop PG_Mlocked flag for over-mapped range
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 0a0be33bb199..ca9a7c6d7e97 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -2124,8 +2124,12 @@ int hugetlb_report_node_meminfo(int nid, char *buf)
 /* Return the number pages of memory we physically have, in PAGE_SIZE units. */
 unsigned long hugetlb_total_pages(void)
 {
-        struct hstate *h = &default_hstate;
-        return h->nr_huge_pages * pages_per_huge_page(h);
+        struct hstate *h;
+        unsigned long nr_total_pages = 0;
+
+        for_each_hstate(h)
+                nr_total_pages += h->nr_huge_pages * pages_per_huge_page(h);
+        return nr_total_pages;
 }
 
 static int hugetlb_acct_memory(struct hstate *h, long delta)
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 9597eec8239d..ee3765760818 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1779,7 +1779,11 @@ void try_offline_node(int nid)
         for (i = 0; i < MAX_NR_ZONES; i++) {
                 struct zone *zone = pgdat->node_zones + i;
 
-                if (zone->wait_table)
+                /*
+                 * wait_table may be allocated from boot memory,
+                 * here only free if it's allocated by vmalloc.
+                 */
+                if (is_vmalloc_addr(zone->wait_table))
                         vfree(zone->wait_table);
         }
 
diff --git a/mm/mlock.c b/mm/mlock.c
index 1c5e33fce639..79b7cf7d1bca 100644
--- a/mm/mlock.c
+++ b/mm/mlock.c
@@ -358,7 +358,7 @@ static int do_mlock(unsigned long start, size_t len, int on)
 
                 newflags = vma->vm_flags & ~VM_LOCKED;
                 if (on)
-                        newflags |= VM_LOCKED | VM_POPULATE;
+                        newflags |= VM_LOCKED;
 
                 tmp = vma->vm_end;
                 if (tmp > end)
@@ -418,8 +418,7 @@ int __mm_populate(unsigned long start, unsigned long len, int ignore_errors)
                  * range with the first VMA. Also, skip undesirable VMA types.
                  */
                 nend = min(end, vma->vm_end);
-                if ((vma->vm_flags & (VM_IO | VM_PFNMAP | VM_POPULATE)) !=
-                    VM_POPULATE)
+                if (vma->vm_flags & (VM_IO | VM_PFNMAP))
                         continue;
                 if (nstart < vma->vm_start)
                         nstart = vma->vm_start;
@@ -492,9 +491,9 @@ static int do_mlockall(int flags)
         struct vm_area_struct * vma, * prev = NULL;
 
         if (flags & MCL_FUTURE)
-                current->mm->def_flags |= VM_LOCKED | VM_POPULATE;
+                current->mm->def_flags |= VM_LOCKED;
         else
-                current->mm->def_flags &= ~(VM_LOCKED | VM_POPULATE);
+                current->mm->def_flags &= ~VM_LOCKED;
         if (flags == MCL_FUTURE)
                 goto out;
 
@@ -503,7 +502,7 @@ static int do_mlockall(int flags)
 
                 newflags = vma->vm_flags & ~VM_LOCKED;
                 if (flags & MCL_CURRENT)
-                        newflags |= VM_LOCKED | VM_POPULATE;
+                        newflags |= VM_LOCKED;
 
                 /* Ignore errors */
                 mlock_fixup(vma, &prev, vma->vm_start, vma->vm_end, newflags);
diff --git a/mm/mmap.c b/mm/mmap.c
index 2664a47cec93..6466699b16cb 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1306,7 +1306,9 @@ unsigned long do_mmap_pgoff(struct file *file, unsigned long addr,
         }
 
         addr = mmap_region(file, addr, len, vm_flags, pgoff);
-        if (!IS_ERR_VALUE(addr) && (vm_flags & VM_POPULATE))
+        if (!IS_ERR_VALUE(addr) &&
+            ((vm_flags & VM_LOCKED) ||
+             (flags & (MAP_POPULATE | MAP_NONBLOCK)) == MAP_POPULATE))
                 *populate = len;
         return addr;
 }
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index a18714469bf7..85addcd9372b 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -86,13 +86,6 @@ void unregister_vlan_dev(struct net_device *dev, struct list_head *head)
 
         grp = &vlan_info->grp;
 
-        /* Take it out of our own structures, but be sure to interlock with
-         * HW accelerating devices or SW vlan input packet processing if
-         * VLAN is not 0 (leave it there for 802.1p).
-         */
-        if (vlan_id)
-                vlan_vid_del(real_dev, vlan_id);
-
         grp->nr_vlan_devs--;
 
         if (vlan->flags & VLAN_FLAG_MVRP)
@@ -114,6 +107,13 @@ void unregister_vlan_dev(struct net_device *dev, struct list_head *head)
                 vlan_gvrp_uninit_applicant(real_dev);
         }
 
+        /* Take it out of our own structures, but be sure to interlock with
+         * HW accelerating devices or SW vlan input packet processing if
+         * VLAN is not 0 (leave it there for 802.1p).
+         */
+        if (vlan_id)
+                vlan_vid_del(real_dev, vlan_id);
+
         /* Get rid of the vlan's reference to real_dev */
         dev_put(real_dev);
 }
diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index a0b253ecadaf..a5bb0a769eb9 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -1288,7 +1288,8 @@ static int batadv_iv_ogm_receive(struct sk_buff *skb,
         batadv_ogm_packet = (struct batadv_ogm_packet *)packet_buff;
 
         /* unpack the aggregated packets and process them one by one */
-        do {
+        while (batadv_iv_ogm_aggr_packet(buff_pos, packet_len,
+                                         batadv_ogm_packet->tt_num_changes)) {
                 tt_buff = packet_buff + buff_pos + BATADV_OGM_HLEN;
 
                 batadv_iv_ogm_process(ethhdr, batadv_ogm_packet, tt_buff,
@@ -1299,8 +1300,7 @@ static int batadv_iv_ogm_receive(struct sk_buff *skb,
 
                 packet_pos = packet_buff + buff_pos;
                 batadv_ogm_packet = (struct batadv_ogm_packet *)packet_pos;
-        } while (batadv_iv_ogm_aggr_packet(buff_pos, packet_len,
-                                           batadv_ogm_packet->tt_num_changes));
+        }
 
         kfree_skb(skb);
         return NET_RX_SUCCESS;
diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
index 79d87d8d4f51..fad0302bdb32 100644
--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -359,6 +359,7 @@ static void __sco_sock_close(struct sock *sk)
                         sco_chan_del(sk, ECONNRESET);
                 break;
 
+        case BT_CONNECT2:
         case BT_CONNECT:
         case BT_DISCONN:
                 sco_chan_del(sk, ECONNRESET);
diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index b0812c91c0f0..bab338e6270d 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -423,7 +423,7 @@ static int fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
                         return 0;
                 br_warn(br, "adding interface %s with same address "
                        "as a received packet\n",
-                       source->dev->name);
+                       source ? source->dev->name : br->dev->name);
                 fdb_delete(br, fdb);
         }
 
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index 27aa3ee517ce..299fc5f40a26 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -29,6 +29,7 @@ static inline size_t br_port_info_size(void)
                 + nla_total_size(1)     /* IFLA_BRPORT_MODE */
                 + nla_total_size(1)     /* IFLA_BRPORT_GUARD */
                 + nla_total_size(1)     /* IFLA_BRPORT_PROTECT */
+                + nla_total_size(1)     /* IFLA_BRPORT_FAST_LEAVE */
                 + 0;
 }
 
@@ -329,6 +330,7 @@ static int br_setport(struct net_bridge_port *p, struct nlattr *tb[])
         br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE);
         br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD);
         br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE);
+        br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK);
 
         if (tb[IFLA_BRPORT_COST]) {
                 err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST]));
diff --git a/net/core/dev.c b/net/core/dev.c
index dffbef70cd31..b13e5c766c11 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1545,7 +1545,6 @@ void net_enable_timestamp(void)
                 return;
         }
 #endif
-        WARN_ON(in_interrupt());
         static_key_slow_inc(&netstamp_needed);
 }
 EXPORT_SYMBOL(net_enable_timestamp);
@@ -2219,9 +2218,9 @@ struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb,
         struct sk_buff *segs = ERR_PTR(-EPROTONOSUPPORT);
         struct packet_offload *ptype;
         __be16 type = skb->protocol;
+        int vlan_depth = ETH_HLEN;
 
         while (type == htons(ETH_P_8021Q)) {
-                int vlan_depth = ETH_HLEN;
                 struct vlan_hdr *vh;
 
                 if (unlikely(!pskb_may_pull(skb, vlan_depth + VLAN_HLEN)))
diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c
index 9d4c7201400d..e187bf06d673 100644
--- a/net/core/flow_dissector.c
+++ b/net/core/flow_dissector.c
@@ -140,6 +140,8 @@ ipv6:
                         flow->ports = *ports;
         }
 
+        flow->thoff = (u16) nhoff;
+
         return true;
 }
 EXPORT_SYMBOL(skb_flow_dissect);
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index a585d45cc9d9..5fb8d7e47294 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -2621,7 +2621,7 @@ static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
                 struct rtattr *attr = (void *)nlh + NLMSG_ALIGN(min_len);
 
                 while (RTA_OK(attr, attrlen)) {
-                        unsigned int flavor = attr->rta_type;
+                        unsigned int flavor = attr->rta_type & NLA_TYPE_MASK;
                         if (flavor) {
                                 if (flavor > rta_max[sz_idx])
                                         return -EINVAL;
diff --git a/net/core/scm.c b/net/core/scm.c
index 905dcc6ad1e3..2dc6cdaaae8a 100644
--- a/net/core/scm.c
+++ b/net/core/scm.c
@@ -24,6 +24,7 @@
 #include <linux/interrupt.h>
 #include <linux/netdevice.h>
 #include <linux/security.h>
+#include <linux/pid_namespace.h>
 #include <linux/pid.h>
 #include <linux/nsproxy.h>
 #include <linux/slab.h>
@@ -52,7 +53,8 @@ static __inline__ int scm_check_creds(struct ucred *creds)
         if (!uid_valid(uid) || !gid_valid(gid))
                 return -EINVAL;
 
-        if ((creds->pid == task_tgid_vnr(current) || nsown_capable(CAP_SYS_ADMIN)) &&
+        if ((creds->pid == task_tgid_vnr(current) ||
+             ns_capable(current->nsproxy->pid_ns->user_ns, CAP_SYS_ADMIN)) &&
             ((uid_eq(uid, cred->uid)   || uid_eq(uid, cred->euid) ||
               uid_eq(uid, cred->suid)) || nsown_capable(CAP_SETUID)) &&
             ((gid_eq(gid, cred->gid)   || gid_eq(gid, cred->egid) ||
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 68f6a94f7661..c929d9c1c4b6 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -1333,8 +1333,7 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb,
                                 iph->frag_off |= htons(IP_MF);
                         offset += (skb->len - skb->mac_len - iph->ihl * 4);
                 } else  {
-                        if (!(iph->frag_off & htons(IP_DF)))
-                                iph->id = htons(id++);
+                        iph->id = htons(id++);
                 }
                 iph->tot_len = htons(skb->len - skb->mac_len);
                 iph->check = 0;
diff --git a/net/ipv4/inet_fragment.c b/net/ipv4/inet_fragment.c
index 245ae078a07f..f4fd23de9b13 100644
--- a/net/ipv4/inet_fragment.c
+++ b/net/ipv4/inet_fragment.c
@@ -21,6 +21,7 @@
 #include <linux/rtnetlink.h>
 #include <linux/slab.h>
 
+#include <net/sock.h>
 #include <net/inet_frag.h>
 
 static void inet_frag_secret_rebuild(unsigned long dummy)
@@ -277,6 +278,7 @@ struct inet_frag_queue *inet_frag_find(struct netns_frags *nf,
         __releases(&f->lock)
 {
         struct inet_frag_queue *q;
+        int depth = 0;
 
         hlist_for_each_entry(q, &f->hash[hash], list) {
                 if (q->net == nf && f->match(q, key)) {
@@ -284,9 +286,25 @@ struct inet_frag_queue *inet_frag_find(struct netns_frags *nf,
                         read_unlock(&f->lock);
                         return q;
                 }
+                depth++;
         }
         read_unlock(&f->lock);
 
-        return inet_frag_create(nf, f, key);
+        if (depth <= INETFRAGS_MAXDEPTH)
+                return inet_frag_create(nf, f, key);
+        else
+                return ERR_PTR(-ENOBUFS);
 }
 EXPORT_SYMBOL(inet_frag_find);
+
+void inet_frag_maybe_warn_overflow(struct inet_frag_queue *q,
+                                   const char *prefix)
+{
+        static const char msg[] = "inet_frag_find: Fragment hash bucket"
+                " list length grew over limit " __stringify(INETFRAGS_MAXDEPTH)
+                ". Dropping fragment.\n";
+
+        if (PTR_ERR(q) == -ENOBUFS)
+                LIMIT_NETDEBUG(KERN_WARNING "%s%s", prefix, msg);
+}
+EXPORT_SYMBOL(inet_frag_maybe_warn_overflow);
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
index b6d30acb600c..a6445b843ef4 100644
--- a/net/ipv4/ip_fragment.c
+++ b/net/ipv4/ip_fragment.c
@@ -292,14 +292,11 @@ static inline struct ipq *ip_find(struct net *net, struct iphdr *iph, u32 user)
         hash = ipqhashfn(iph->id, iph->saddr, iph->daddr, iph->protocol);
 
         q = inet_frag_find(&net->ipv4.frags, &ip4_frags, &arg, hash);
-        if (q == NULL)
-                goto out_nomem;
-
+        if (IS_ERR_OR_NULL(q)) {
+                inet_frag_maybe_warn_overflow(q, pr_fmt());
+                return NULL;
+        }
         return container_of(q, struct ipq, q);
-
-out_nomem:
-        LIMIT_NETDEBUG(KERN_ERR pr_fmt("ip_frag_create: no memory left !\n"));
-        return NULL;
 }
 
 /* Is the fragment too far ahead to be part of ipq? */
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index d0ef0e674ec5..91d66dbde9c0 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -798,10 +798,7 @@ static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev
 
         if (dev->header_ops && dev->type == ARPHRD_IPGRE) {
                 gre_hlen = 0;
-                if (skb->protocol == htons(ETH_P_IP))
-                        tiph = (const struct iphdr *)skb->data;
-                else
-                        tiph = &tunnel->parms.iph;
+                tiph = (const struct iphdr *)skb->data;
         } else {
                 gre_hlen = tunnel->hlen;
                 tiph = &tunnel->parms.iph;
diff --git a/net/ipv4/ip_options.c b/net/ipv4/ip_options.c
index 310a3647c83d..ec7264514a82 100644
--- a/net/ipv4/ip_options.c
+++ b/net/ipv4/ip_options.c
@@ -370,7 +370,6 @@ int ip_options_compile(struct net *net,
                                 }
                                 switch (optptr[3]&0xF) {
                                       case IPOPT_TS_TSONLY:
-                                        opt->ts = optptr - iph;
                                         if (skb)
                                                 timeptr = &optptr[optptr[2]-1];
                                         opt->ts_needtime = 1;
@@ -381,7 +380,6 @@ int ip_options_compile(struct net *net,
                                                 pp_ptr = optptr + 2;
                                                 goto error;
                                         }
-                                        opt->ts = optptr - iph;
                                         if (rt)  {
                                                 spec_dst_fill(&spec_dst, skb);
                                                 memcpy(&optptr[optptr[2]-1], &spec_dst, 4);
@@ -396,7 +394,6 @@ int ip_options_compile(struct net *net,
                                                 pp_ptr = optptr + 2;
                                                 goto error;
                                         }
-                                        opt->ts = optptr - iph;
                                         {
                                                 __be32 addr;
                                                 memcpy(&addr, &optptr[optptr[2]-1], 4);
@@ -429,12 +426,12 @@ int ip_options_compile(struct net *net,
                                         pp_ptr = optptr + 3;
                                         goto error;
                                 }
-                                opt->ts = optptr - iph;
                                 if (skb) {
                                         optptr[3] = (optptr[3]&0xF)|((overflow+1)<<4);
                                         opt->is_changed = 1;
                                 }
                         }
+                        opt->ts = optptr - iph;
                         break;
                       case IPOPT_RA:
                         if (optlen < 4) {
diff --git a/net/ipv4/ipconfig.c b/net/ipv4/ipconfig.c
index 98cbc6877019..bf6c5cf31aed 100644
--- a/net/ipv4/ipconfig.c
+++ b/net/ipv4/ipconfig.c
@@ -1522,7 +1522,8 @@ static int __init ip_auto_config(void)
                 }
         for (i++; i < CONF_NAMESERVERS_MAX; i++)
                 if (ic_nameservers[i] != NONE)
-                        pr_cont(", nameserver%u=%pI4\n", i, &ic_nameservers[i]);
+                        pr_cont(", nameserver%u=%pI4", i, &ic_nameservers[i]);
+        pr_cont("\n");
 #endif /* !SILENT */
 
         return 0;
diff --git a/net/ipv4/netfilter/Kconfig b/net/ipv4/netfilter/Kconfig
index ce2d43e1f09f..0d755c50994b 100644
--- a/net/ipv4/netfilter/Kconfig
+++ b/net/ipv4/netfilter/Kconfig
@@ -36,19 +36,6 @@ config NF_CONNTRACK_PROC_COMPAT
 
           If unsure, say Y.
 
-config IP_NF_QUEUE
-        tristate "IP Userspace queueing via NETLINK (OBSOLETE)"
-        depends on NETFILTER_ADVANCED
-        help
-          Netfilter has the ability to queue packets to user space: the
-          netlink device can be used to access them using this driver.
-
-          This option enables the old IPv4-only "ip_queue" implementation
-          which has been obsoleted by the new "nfnetlink_queue" code (see
-          CONFIG_NETFILTER_NETLINK_QUEUE).
-
-          To compile it as a module, choose M here.  If unsure, say N.
-
 config IP_NF_IPTABLES
         tristate "IP tables support (required for filtering/masq/NAT)"
         default m if NETFILTER_ADVANCED=n
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 47e854fcae24..e22020790709 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -775,7 +775,7 @@ struct sk_buff *sk_stream_alloc_skb(struct sock *sk, int size, gfp_t gfp)
                          * Make sure that we have exactly size bytes
                          * available to the caller, no more, no less.
                          */
-                        skb->avail_size = size;
+                        skb->reserved_tailroom = skb->end - skb->tail - size;
                         return skb;
                 }
                 __kfree_skb(skb);
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 0d9bdacce99f..3bd55bad230a 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -2059,11 +2059,8 @@ void tcp_enter_loss(struct sock *sk, int how)
         if (tcp_is_reno(tp))
                 tcp_reset_reno_sack(tp);
 
-        if (!how) {
-                /* Push undo marker, if it was plain RTO and nothing
-                 * was retransmitted. */
-                tp->undo_marker = tp->snd_una;
-        } else {
+        tp->undo_marker = tp->snd_una;
+        if (how) {
                 tp->sacked_out = 0;
                 tp->fackets_out = 0;
         }
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 4a8ec457310f..d09203c63264 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -274,13 +274,6 @@ static void tcp_v4_mtu_reduced(struct sock *sk)
         struct inet_sock *inet = inet_sk(sk);
         u32 mtu = tcp_sk(sk)->mtu_info;
 
-        /* We are not interested in TCP_LISTEN and open_requests (SYN-ACKs
-         * send out by Linux are always <576bytes so they should go through
-         * unfragmented).
-         */
-        if (sk->sk_state == TCP_LISTEN)
-                return;
-
         dst = inet_csk_update_pmtu(sk, mtu);
         if (!dst)
                 return;
@@ -408,6 +401,13 @@ void tcp_v4_err(struct sk_buff *icmp_skb, u32 info)
                         goto out;
 
                 if (code == ICMP_FRAG_NEEDED) { /* PMTU discovery (RFC1191) */
+                        /* We are not interested in TCP_LISTEN and open_requests
+                         * (SYN-ACKs send out by Linux are always <576bytes so
+                         * they should go through unfragmented).
+                         */
+                        if (sk->sk_state == TCP_LISTEN)
+                                goto out;
+
                         tp->mtu_info = info;
                         if (!sock_owned_by_user(sk)) {
                                 tcp_v4_mtu_reduced(sk);
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index e2b4461074da..5d0b4387cba6 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -1298,7 +1298,6 @@ static void __pskb_trim_head(struct sk_buff *skb, int len)
         eat = min_t(int, len, skb_headlen(skb));
         if (eat) {
                 __skb_pull(skb, eat);
-                skb->avail_size -= eat;
                 len -= eat;
                 if (!len)
                         return;
@@ -1810,8 +1809,11 @@ static bool tcp_tso_should_defer(struct sock *sk, struct sk_buff *skb)
                         goto send_now;
         }
 
-        /* Ok, it looks like it is advisable to defer.  */
-        tp->tso_deferred = 1 | (jiffies << 1);
+        /* Ok, it looks like it is advisable to defer.
+         * Do not rearm the timer if already set to not break TCP ACK clocking.
+         */
+        if (!tp->tso_deferred)
+                tp->tso_deferred = 1 | (jiffies << 1);
 
         return true;
 
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 265c42cf963c..0a073a263720 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1762,9 +1762,16 @@ int udp_rcv(struct sk_buff *skb)
 
 void udp_destroy_sock(struct sock *sk)
 {
+        struct udp_sock *up = udp_sk(sk);
         bool slow = lock_sock_fast(sk);
         udp_flush_pending_frames(sk);
         unlock_sock_fast(sk, slow);
+        if (static_key_false(&udp_encap_needed) && up->encap_type) {
+                void (*encap_destroy)(struct sock *sk);
+                encap_destroy = ACCESS_ONCE(up->encap_destroy);
+                if (encap_destroy)
+                        encap_destroy(sk);
+        }
 }
 
 /*
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index f2c7e615f902..26512250e095 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -4784,26 +4784,20 @@ static void addrconf_sysctl_unregister(struct inet6_dev *idev)
 
 static int __net_init addrconf_init_net(struct net *net)
 {
-        int err;
+        int err = -ENOMEM;
         struct ipv6_devconf *all, *dflt;
 
-        err = -ENOMEM;
-        all = &ipv6_devconf;
-        dflt = &ipv6_devconf_dflt;
+        all = kmemdup(&ipv6_devconf, sizeof(ipv6_devconf), GFP_KERNEL);
+        if (all == NULL)
+                goto err_alloc_all;
 
-        if (!net_eq(net, &init_net)) {
-                all = kmemdup(all, sizeof(ipv6_devconf), GFP_KERNEL);
-                if (all == NULL)
-                        goto err_alloc_all;
+        dflt = kmemdup(&ipv6_devconf_dflt, sizeof(ipv6_devconf_dflt), GFP_KERNEL);
+        if (dflt == NULL)
+                goto err_alloc_dflt;
 
-                dflt = kmemdup(dflt, sizeof(ipv6_devconf_dflt), GFP_KERNEL);
-                if (dflt == NULL)
-                        goto err_alloc_dflt;
-        } else {
-                /* these will be inherited by all namespaces */
-                dflt->autoconf = ipv6_defaults.autoconf;
-                dflt->disable_ipv6 = ipv6_defaults.disable_ipv6;
-        }
+        /* these will be inherited by all namespaces */
+        dflt->autoconf = ipv6_defaults.autoconf;
+        dflt->disable_ipv6 = ipv6_defaults.disable_ipv6;
 
         net->ipv6.devconf_all = all;
         net->ipv6.devconf_dflt = dflt;
diff --git a/net/ipv6/netfilter/ip6t_NPT.c b/net/ipv6/netfilter/ip6t_NPT.c
index 83acc1405a18..33608c610276 100644
--- a/net/ipv6/netfilter/ip6t_NPT.c
+++ b/net/ipv6/netfilter/ip6t_NPT.c
@@ -114,6 +114,7 @@ ip6t_dnpt_tg(struct sk_buff *skb, const struct xt_action_param *par)
 static struct xt_target ip6t_npt_target_reg[] __read_mostly = {
         {
                 .name           = "SNPT",
+                .table          = "mangle",
                 .target         = ip6t_snpt_tg,
                 .targetsize     = sizeof(struct ip6t_npt_tginfo),
                 .checkentry     = ip6t_npt_checkentry,
@@ -124,6 +125,7 @@ static struct xt_target ip6t_npt_target_reg[] __read_mostly = {
         },
         {
                 .name           = "DNPT",
+                .table          = "mangle",
                 .target         = ip6t_dnpt_tg,
                 .targetsize     = sizeof(struct ip6t_npt_tginfo),
                 .checkentry     = ip6t_npt_checkentry,
diff --git a/net/ipv6/netfilter/nf_conntrack_reasm.c b/net/ipv6/netfilter/nf_conntrack_reasm.c
index 54087e96d7b8..6700069949dd 100644
--- a/net/ipv6/netfilter/nf_conntrack_reasm.c
+++ b/net/ipv6/netfilter/nf_conntrack_reasm.c
@@ -14,6 +14,8 @@
  * 2 of the License, or (at your option) any later version.
  */
 
+#define pr_fmt(fmt) "IPv6-nf: " fmt
+
 #include <linux/errno.h>
 #include <linux/types.h>
 #include <linux/string.h>
@@ -180,13 +182,11 @@ static inline struct frag_queue *fq_find(struct net *net, __be32 id,
 
         q = inet_frag_find(&net->nf_frag.frags, &nf_frags, &arg, hash);
         local_bh_enable();
-        if (q == NULL)
-                goto oom;
-
+        if (IS_ERR_OR_NULL(q)) {
+                inet_frag_maybe_warn_overflow(q, pr_fmt());
+                return NULL;
+        }
         return container_of(q, struct frag_queue, q);
-
-oom:
-        return NULL;
 }
 
 
diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c
index 3c6a77290c6e..196ab9347ad1 100644
--- a/net/ipv6/reassembly.c
+++ b/net/ipv6/reassembly.c
@@ -26,6 +26,9 @@
  *      YOSHIFUJI,H. @USAGI     Always remove fragment header to
  *                              calculate ICV correctly.
  */
+
+#define pr_fmt(fmt) "IPv6: " fmt
+
 #include <linux/errno.h>
 #include <linux/types.h>
 #include <linux/string.h>
@@ -185,9 +188,10 @@ fq_find(struct net *net, __be32 id, const struct in6_addr *src, const struct in6
         hash = inet6_hash_frag(id, src, dst, ip6_frags.rnd);
 
         q = inet_frag_find(&net->ipv6.frags, &ip6_frags, &arg, hash);
-        if (q == NULL)
+        if (IS_ERR_OR_NULL(q)) {
+                inet_frag_maybe_warn_overflow(q, pr_fmt());
                 return NULL;
-
+        }
         return container_of(q, struct frag_queue, q);
 }
 
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 9b6460055df5..f6d629fd6aee 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -389,6 +389,13 @@ static void tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
         }
 
         if (type == ICMPV6_PKT_TOOBIG) {
+                /* We are not interested in TCP_LISTEN and open_requests
+                 * (SYN-ACKs send out by Linux are always <576bytes so
+                 * they should go through unfragmented).
+                 */
+                if (sk->sk_state == TCP_LISTEN)
+                        goto out;
+
                 tp->mtu_info = ntohl(info);
                 if (!sock_owned_by_user(sk))
                         tcp_v6_mtu_reduced(sk);
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 599e1ba6d1ce..d8e5e852fc7a 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -1285,10 +1285,18 @@ do_confirm:
 
 void udpv6_destroy_sock(struct sock *sk)
 {
+        struct udp_sock *up = udp_sk(sk);
         lock_sock(sk);
         udp_v6_flush_pending_frames(sk);
         release_sock(sk);
 
+        if (static_key_false(&udpv6_encap_needed) && up->encap_type) {
+                void (*encap_destroy)(struct sock *sk);
+                encap_destroy = ACCESS_ONCE(up->encap_destroy);
+                if (encap_destroy)
+                        encap_destroy(sk);
+        }
+
         inet6_destroy_sock(sk);
 }
 
diff --git a/net/irda/af_irda.c b/net/irda/af_irda.c
index d07e3a626446..d28e7f014cc6 100644
--- a/net/irda/af_irda.c
+++ b/net/irda/af_irda.c
@@ -2583,8 +2583,10 @@ bed:
                                     NULL, NULL, NULL);
 
                 /* Check if the we got some results */
-                if (!self->cachedaddr)
-                        return -EAGAIN;         /* Didn't find any devices */
+                if (!self->cachedaddr) {
+                        err = -EAGAIN;          /* Didn't find any devices */
+                        goto out;
+                }
                 daddr = self->cachedaddr;
                 /* Cleanup */
                 self->cachedaddr = 0;
diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c
index d36875f3427e..8aecf5df6656 100644
--- a/net/l2tp/l2tp_core.c
+++ b/net/l2tp/l2tp_core.c
@@ -114,7 +114,6 @@ struct l2tp_net {
 
 static void l2tp_session_set_header_len(struct l2tp_session *session, int version);
 static void l2tp_tunnel_free(struct l2tp_tunnel *tunnel);
-static void l2tp_tunnel_closeall(struct l2tp_tunnel *tunnel);
 
 static inline struct l2tp_net *l2tp_pernet(struct net *net)
 {
@@ -192,6 +191,7 @@ struct sock *l2tp_tunnel_sock_lookup(struct l2tp_tunnel *tunnel)
         } else {
                 /* Socket is owned by kernelspace */
                 sk = tunnel->sock;
+                sock_hold(sk);
         }
 
 out:
@@ -210,6 +210,7 @@ void l2tp_tunnel_sock_put(struct sock *sk)
                 }
                 sock_put(sk);
         }
+        sock_put(sk);
 }
 EXPORT_SYMBOL_GPL(l2tp_tunnel_sock_put);
 
@@ -373,10 +374,8 @@ static void l2tp_recv_queue_skb(struct l2tp_session *session, struct sk_buff *sk
         struct sk_buff *skbp;
         struct sk_buff *tmp;
         u32 ns = L2TP_SKB_CB(skb)->ns;
-        struct l2tp_stats *sstats;
 
         spin_lock_bh(&session->reorder_q.lock);
-        sstats = &session->stats;
         skb_queue_walk_safe(&session->reorder_q, skbp, tmp) {
                 if (L2TP_SKB_CB(skbp)->ns > ns) {
                         __skb_queue_before(&session->reorder_q, skbp, skb);
@@ -384,9 +383,7 @@ static void l2tp_recv_queue_skb(struct l2tp_session *session, struct sk_buff *sk
                                  "%s: pkt %hu, inserted before %hu, reorder_q len=%d\n",
                                  session->name, ns, L2TP_SKB_CB(skbp)->ns,
                                  skb_queue_len(&session->reorder_q));
-                        u64_stats_update_begin(&sstats->syncp);
-                        sstats->rx_oos_packets++;
-                        u64_stats_update_end(&sstats->syncp);
+                        atomic_long_inc(&session->stats.rx_oos_packets);
                         goto out;
                 }
         }
@@ -403,23 +400,16 @@ static void l2tp_recv_dequeue_skb(struct l2tp_session *session, struct sk_buff *
 {
         struct l2tp_tunnel *tunnel = session->tunnel;
         int length = L2TP_SKB_CB(skb)->length;
-        struct l2tp_stats *tstats, *sstats;
 
         /* We're about to requeue the skb, so return resources
          * to its current owner (a socket receive buffer).
          */
         skb_orphan(skb);
 
-        tstats = &tunnel->stats;
-        u64_stats_update_begin(&tstats->syncp);
-        sstats = &session->stats;
-        u64_stats_update_begin(&sstats->syncp);
-        tstats->rx_packets++;
-        tstats->rx_bytes += length;
-        sstats->rx_packets++;
-        sstats->rx_bytes += length;
-        u64_stats_update_end(&tstats->syncp);
-        u64_stats_update_end(&sstats->syncp);
+        atomic_long_inc(&tunnel->stats.rx_packets);
+        atomic_long_add(length, &tunnel->stats.rx_bytes);
+        atomic_long_inc(&session->stats.rx_packets);
+        atomic_long_add(length, &session->stats.rx_bytes);
 
         if (L2TP_SKB_CB(skb)->has_seq) {
                 /* Bump our Nr */
@@ -450,7 +440,6 @@ static void l2tp_recv_dequeue(struct l2tp_session *session)
 {
         struct sk_buff *skb;
         struct sk_buff *tmp;
-        struct l2tp_stats *sstats;
 
         /* If the pkt at the head of the queue has the nr that we
          * expect to send up next, dequeue it and any other
@@ -458,13 +447,10 @@ static void l2tp_recv_dequeue(struct l2tp_session *session)
          */
 start:
         spin_lock_bh(&session->reorder_q.lock);
-        sstats = &session->stats;
         skb_queue_walk_safe(&session->reorder_q, skb, tmp) {
                 if (time_after(jiffies, L2TP_SKB_CB(skb)->expires)) {
-                        u64_stats_update_begin(&sstats->syncp);
-                        sstats->rx_seq_discards++;
-                        sstats->rx_errors++;
-                        u64_stats_update_end(&sstats->syncp);
+                        atomic_long_inc(&session->stats.rx_seq_discards);
+                        atomic_long_inc(&session->stats.rx_errors);
                         l2tp_dbg(session, L2TP_MSG_SEQ,
                                  "%s: oos pkt %u len %d discarded (too old), waiting for %u, reorder_q_len=%d\n",
                                  session->name, L2TP_SKB_CB(skb)->ns,
@@ -623,7 +609,6 @@ void l2tp_recv_common(struct l2tp_session *session, struct sk_buff *skb,
         struct l2tp_tunnel *tunnel = session->tunnel;
         int offset;
         u32 ns, nr;
-        struct l2tp_stats *sstats = &session->stats;
 
         /* The ref count is increased since we now hold a pointer to
          * the session. Take care to decrement the refcnt when exiting
@@ -640,9 +625,7 @@ void l2tp_recv_common(struct l2tp_session *session, struct sk_buff *skb,
                                   "%s: cookie mismatch (%u/%u). Discarding.\n",
                                   tunnel->name, tunnel->tunnel_id,
                                   session->session_id);
-                        u64_stats_update_begin(&sstats->syncp);
-                        sstats->rx_cookie_discards++;
-                        u64_stats_update_end(&sstats->syncp);
+                        atomic_long_inc(&session->stats.rx_cookie_discards);
                         goto discard;
                 }
                 ptr += session->peer_cookie_len;
@@ -711,9 +694,7 @@ void l2tp_recv_common(struct l2tp_session *session, struct sk_buff *skb,
                         l2tp_warn(session, L2TP_MSG_SEQ,
                                   "%s: recv data has no seq numbers when required. Discarding.\n",
                                   session->name);
-                        u64_stats_update_begin(&sstats->syncp);
-                        sstats->rx_seq_discards++;
-                        u64_stats_update_end(&sstats->syncp);
+                        atomic_long_inc(&session->stats.rx_seq_discards);
                         goto discard;
                 }
 
@@ -732,9 +713,7 @@ void l2tp_recv_common(struct l2tp_session *session, struct sk_buff *skb,
                         l2tp_warn(session, L2TP_MSG_SEQ,
                                   "%s: recv data has no seq numbers when required. Discarding.\n",
                                   session->name);
-                        u64_stats_update_begin(&sstats->syncp);
-                        sstats->rx_seq_discards++;
-                        u64_stats_update_end(&sstats->syncp);
+                        atomic_long_inc(&session->stats.rx_seq_discards);
                         goto discard;
                 }
         }
@@ -788,9 +767,7 @@ void l2tp_recv_common(struct l2tp_session *session, struct sk_buff *skb,
                          * packets
                          */
                         if (L2TP_SKB_CB(skb)->ns != session->nr) {
-                                u64_stats_update_begin(&sstats->syncp);
-                                sstats->rx_seq_discards++;
-                                u64_stats_update_end(&sstats->syncp);
+                                atomic_long_inc(&session->stats.rx_seq_discards);
                                 l2tp_dbg(session, L2TP_MSG_SEQ,
                                          "%s: oos pkt %u len %d discarded, waiting for %u, reorder_q_len=%d\n",
                                          session->name, L2TP_SKB_CB(skb)->ns,
@@ -816,9 +793,7 @@ void l2tp_recv_common(struct l2tp_session *session, struct sk_buff *skb,
         return;
 
 discard:
-        u64_stats_update_begin(&sstats->syncp);
-        sstats->rx_errors++;
-        u64_stats_update_end(&sstats->syncp);
+        atomic_long_inc(&session->stats.rx_errors);
         kfree_skb(skb);
 
         if (session->deref)
@@ -828,6 +803,23 @@ discard:
 }
 EXPORT_SYMBOL(l2tp_recv_common);
 
+/* Drop skbs from the session's reorder_q
+ */
+int l2tp_session_queue_purge(struct l2tp_session *session)
+{
+        struct sk_buff *skb = NULL;
+        BUG_ON(!session);
+        BUG_ON(session->magic != L2TP_SESSION_MAGIC);
+        while ((skb = skb_dequeue(&session->reorder_q))) {
+                atomic_long_inc(&session->stats.rx_errors);
+                kfree_skb(skb);
+                if (session->deref)
+                        (*session->deref)(session);
+        }
+        return 0;
+}
+EXPORT_SYMBOL_GPL(l2tp_session_queue_purge);
+
 /* Internal UDP receive frame. Do the real work of receiving an L2TP data frame
  * here. The skb is not on a list when we get here.
  * Returns 0 if the packet was a data packet and was successfully passed on.
@@ -843,7 +835,6 @@ static int l2tp_udp_recv_core(struct l2tp_tunnel *tunnel, struct sk_buff *skb,
         u32 tunnel_id, session_id;
         u16 version;
         int length;
-        struct l2tp_stats *tstats;
 
         if (tunnel->sock && l2tp_verify_udp_checksum(tunnel->sock, skb))
                 goto discard_bad_csum;
@@ -932,10 +923,7 @@ static int l2tp_udp_recv_core(struct l2tp_tunnel *tunnel, struct sk_buff *skb,
 discard_bad_csum:
         LIMIT_NETDEBUG("%s: UDP: bad checksum\n", tunnel->name);
         UDP_INC_STATS_USER(tunnel->l2tp_net, UDP_MIB_INERRORS, 0);
-        tstats = &tunnel->stats;
-        u64_stats_update_begin(&tstats->syncp);
-        tstats->rx_errors++;
-        u64_stats_update_end(&tstats->syncp);
+        atomic_long_inc(&tunnel->stats.rx_errors);
         kfree_skb(skb);
 
         return 0;
@@ -1062,7 +1050,6 @@ static int l2tp_xmit_core(struct l2tp_session *session, struct sk_buff *skb,
         struct l2tp_tunnel *tunnel = session->tunnel;
         unsigned int len = skb->len;
         int error;
-        struct l2tp_stats *tstats, *sstats;
 
         /* Debug */
         if (session->send_seq)
@@ -1091,21 +1078,15 @@ static int l2tp_xmit_core(struct l2tp_session *session, struct sk_buff *skb,
                 error = ip_queue_xmit(skb, fl);
 
         /* Update stats */
-        tstats = &tunnel->stats;
-        u64_stats_update_begin(&tstats->syncp);
-        sstats = &session->stats;
-        u64_stats_update_begin(&sstats->syncp);
         if (error >= 0) {
-                tstats->tx_packets++;
-                tstats->tx_bytes += len;
-                sstats->tx_packets++;
-                sstats->tx_bytes += len;
+                atomic_long_inc(&tunnel->stats.tx_packets);
+                atomic_long_add(len, &tunnel->stats.tx_bytes);
+                atomic_long_inc(&session->stats.tx_packets);
+                atomic_long_add(len, &session->stats.tx_bytes);
         } else {
-                tstats->tx_errors++;
-                sstats->tx_errors++;
+                atomic_long_inc(&tunnel->stats.tx_errors);
+                atomic_long_inc(&session->stats.tx_errors);
         }
-        u64_stats_update_end(&tstats->syncp);
-        u64_stats_update_end(&sstats->syncp);
 
         return 0;
 }
@@ -1282,6 +1263,7 @@ static void l2tp_tunnel_destruct(struct sock *sk)
                 /* No longer an encapsulation socket. See net/ipv4/udp.c */
                 (udp_sk(sk))->encap_type = 0;
                 (udp_sk(sk))->encap_rcv = NULL;
+                (udp_sk(sk))->encap_destroy = NULL;
                 break;
         case L2TP_ENCAPTYPE_IP:
                 break;
@@ -1311,7 +1293,7 @@ end:
 
 /* When the tunnel is closed, all the attached sessions need to go too.
  */
-static void l2tp_tunnel_closeall(struct l2tp_tunnel *tunnel)
+void l2tp_tunnel_closeall(struct l2tp_tunnel *tunnel)
 {
         int hash;
         struct hlist_node *walk;
@@ -1334,25 +1316,13 @@ again:
 
                         hlist_del_init(&session->hlist);
 
-                        /* Since we should hold the sock lock while
-                         * doing any unbinding, we need to release the
-                         * lock we're holding before taking that lock.
-                         * Hold a reference to the sock so it doesn't
-                         * disappear as we're jumping between locks.
-                         */
                         if (session->ref != NULL)
                                 (*session->ref)(session);
 
                         write_unlock_bh(&tunnel->hlist_lock);
 
-                        if (tunnel->version != L2TP_HDR_VER_2) {
-                                struct l2tp_net *pn = l2tp_pernet(tunnel->l2tp_net);
-
-                                spin_lock_bh(&pn->l2tp_session_hlist_lock);
-                                hlist_del_init_rcu(&session->global_hlist);
-                                spin_unlock_bh(&pn->l2tp_session_hlist_lock);
-                                synchronize_rcu();
-                        }
+                        __l2tp_session_unhash(session);
+                        l2tp_session_queue_purge(session);
 
                         if (session->session_close != NULL)
                                 (*session->session_close)(session);
@@ -1360,6 +1330,8 @@ again:
                         if (session->deref != NULL)
                                 (*session->deref)(session);
 
+                        l2tp_session_dec_refcount(session);
+
                         write_lock_bh(&tunnel->hlist_lock);
 
                         /* Now restart from the beginning of this hash
@@ -1372,6 +1344,17 @@ again:
         }
         write_unlock_bh(&tunnel->hlist_lock);
 }
+EXPORT_SYMBOL_GPL(l2tp_tunnel_closeall);
+
+/* Tunnel socket destroy hook for UDP encapsulation */
+static void l2tp_udp_encap_destroy(struct sock *sk)
+{
+        struct l2tp_tunnel *tunnel = l2tp_sock_to_tunnel(sk);
+        if (tunnel) {
+                l2tp_tunnel_closeall(tunnel);
+                sock_put(sk);
+        }
+}
 
 /* Really kill the tunnel.
  * Come here only when all sessions have been cleared from the tunnel.
@@ -1397,19 +1380,21 @@ static void l2tp_tunnel_del_work(struct work_struct *work)
                 return;
 
         sock = sk->sk_socket;
-        BUG_ON(!sock);
 
-        /* If the tunnel socket was created directly by the kernel, use the
-         * sk_* API to release the socket now.  Otherwise go through the
-         * inet_* layer to shut the socket down, and let userspace close it.
+        /* If the tunnel socket was created by userspace, then go through the
+         * inet layer to shut the socket down, and let userspace close it.
+         * Otherwise, if we created the socket directly within the kernel, use
+         * the sk API to release it here.
          * In either case the tunnel resources are freed in the socket
          * destructor when the tunnel socket goes away.
          */
-        if (sock->file == NULL) {
-                kernel_sock_shutdown(sock, SHUT_RDWR);
-                sk_release_kernel(sk);
+        if (tunnel->fd >= 0) {
+                if (sock)
+                        inet_shutdown(sock, 2);
         } else {
-                inet_shutdown(sock, 2);
+                if (sock)
+                        kernel_sock_shutdown(sock, SHUT_RDWR);
+                sk_release_kernel(sk);
         }
 
         l2tp_tunnel_sock_put(sk);
@@ -1668,6 +1653,7 @@ int l2tp_tunnel_create(struct net *net, int fd, int version, u32 tunnel_id, u32
                 /* Mark socket as an encapsulation socket. See net/ipv4/udp.c */
                 udp_sk(sk)->encap_type = UDP_ENCAP_L2TPINUDP;
                 udp_sk(sk)->encap_rcv = l2tp_udp_encap_recv;
+                udp_sk(sk)->encap_destroy = l2tp_udp_encap_destroy;
 #if IS_ENABLED(CONFIG_IPV6)
                 if (sk->sk_family == PF_INET6)
                         udpv6_encap_enable();
@@ -1723,6 +1709,7 @@ EXPORT_SYMBOL_GPL(l2tp_tunnel_create);
  */
 int l2tp_tunnel_delete(struct l2tp_tunnel *tunnel)
 {
+        l2tp_tunnel_closeall(tunnel);
         return (false == queue_work(l2tp_wq, &tunnel->del_work));
 }
 EXPORT_SYMBOL_GPL(l2tp_tunnel_delete);
@@ -1731,62 +1718,71 @@ EXPORT_SYMBOL_GPL(l2tp_tunnel_delete);
  */
 void l2tp_session_free(struct l2tp_session *session)
 {
-        struct l2tp_tunnel *tunnel;
+        struct l2tp_tunnel *tunnel = session->tunnel;
 
         BUG_ON(atomic_read(&session->ref_count) != 0);
 
-        tunnel = session->tunnel;
-        if (tunnel != NULL) {
+        if (tunnel) {
                 BUG_ON(tunnel->magic != L2TP_TUNNEL_MAGIC);
+                if (session->session_id != 0)
+                        atomic_dec(&l2tp_session_count);
+                sock_put(tunnel->sock);
+                session->tunnel = NULL;
+                l2tp_tunnel_dec_refcount(tunnel);
+        }
+
+        kfree(session);
 
-                /* Delete the session from the hash */
+        return;
+}
+EXPORT_SYMBOL_GPL(l2tp_session_free);
+
+/* Remove an l2tp session from l2tp_core's hash lists.
+ * Provides a tidyup interface for pseudowire code which can't just route all
+ * shutdown via. l2tp_session_delete and a pseudowire-specific session_close
+ * callback.
+ */
+void __l2tp_session_unhash(struct l2tp_session *session)
+{
+        struct l2tp_tunnel *tunnel = session->tunnel;
+
+        /* Remove the session from core hashes */
+        if (tunnel) {
+                /* Remove from the per-tunnel hash */
                 write_lock_bh(&tunnel->hlist_lock);
                 hlist_del_init(&session->hlist);
                 write_unlock_bh(&tunnel->hlist_lock);
 
-                /* Unlink from the global hash if not L2TPv2 */
+                /* For L2TPv3 we have a per-net hash: remove from there, too */
                 if (tunnel->version != L2TP_HDR_VER_2) {
                         struct l2tp_net *pn = l2tp_pernet(tunnel->l2tp_net);
-
                         spin_lock_bh(&pn->l2tp_session_hlist_lock);
                         hlist_del_init_rcu(&session->global_hlist);
                         spin_unlock_bh(&pn->l2tp_session_hlist_lock);
                         synchronize_rcu();
                 }
-
-                if (session->session_id != 0)
-                        atomic_dec(&l2tp_session_count);
-
-                sock_put(tunnel->sock);
-
-                /* This will delete the tunnel context if this
-                 * is the last session on the tunnel.
-                 */
-                session->tunnel = NULL;
-                l2tp_tunnel_dec_refcount(tunnel);
         }
-
-        kfree(session);
-
-        return;
 }
-EXPORT_SYMBOL_GPL(l2tp_session_free);
+EXPORT_SYMBOL_GPL(__l2tp_session_unhash);
 
 /* This function is used by the netlink SESSION_DELETE command and by
    pseudowire modules.
  */
 int l2tp_session_delete(struct l2tp_session *session)
 {
+        if (session->ref)
+                (*session->ref)(session);
+        __l2tp_session_unhash(session);
+        l2tp_session_queue_purge(session);
         if (session->session_close != NULL)
                 (*session->session_close)(session);
-
+        if (session->deref)
+                (*session->ref)(session);
         l2tp_session_dec_refcount(session);
-
         return 0;
 }
 EXPORT_SYMBOL_GPL(l2tp_session_delete);
 
-
 /* We come here whenever a session's send_seq, cookie_len or
  * l2specific_len parameters are set.
  */
diff --git a/net/l2tp/l2tp_core.h b/net/l2tp/l2tp_core.h
index 8eb8f1d47f3a..485a490fd990 100644
--- a/net/l2tp/l2tp_core.h
+++ b/net/l2tp/l2tp_core.h
@@ -36,16 +36,15 @@ enum {
 struct sk_buff;
 
 struct l2tp_stats {
-        u64                     tx_packets;
-        u64                     tx_bytes;
-        u64                     tx_errors;
-        u64                     rx_packets;
-        u64                     rx_bytes;
-        u64                     rx_seq_discards;
-        u64                     rx_oos_packets;
-        u64                     rx_errors;
-        u64                     rx_cookie_discards;
-        struct u64_stats_sync   syncp;
+        atomic_long_t           tx_packets;
+        atomic_long_t           tx_bytes;
+        atomic_long_t           tx_errors;
+        atomic_long_t           rx_packets;
+        atomic_long_t           rx_bytes;
+        atomic_long_t           rx_seq_discards;
+        atomic_long_t           rx_oos_packets;
+        atomic_long_t           rx_errors;
+        atomic_long_t           rx_cookie_discards;
 };
 
 struct l2tp_tunnel;
@@ -240,11 +239,14 @@ extern struct l2tp_tunnel *l2tp_tunnel_find(struct net *net, u32 tunnel_id);
 extern struct l2tp_tunnel *l2tp_tunnel_find_nth(struct net *net, int nth);
 
 extern int l2tp_tunnel_create(struct net *net, int fd, int version, u32 tunnel_id, u32 peer_tunnel_id, struct l2tp_tunnel_cfg *cfg, struct l2tp_tunnel **tunnelp);
+extern void l2tp_tunnel_closeall(struct l2tp_tunnel *tunnel);
 extern int l2tp_tunnel_delete(struct l2tp_tunnel *tunnel);
 extern struct l2tp_session *l2tp_session_create(int priv_size, struct l2tp_tunnel *tunnel, u32 session_id, u32 peer_session_id, struct l2tp_session_cfg *cfg);
+extern void __l2tp_session_unhash(struct l2tp_session *session);
 extern int l2tp_session_delete(struct l2tp_session *session);
 extern void l2tp_session_free(struct l2tp_session *session);
 extern void l2tp_recv_common(struct l2tp_session *session, struct sk_buff *skb, unsigned char *ptr, unsigned char *optr, u16 hdrflags, int length, int (*payload_hook)(struct sk_buff *skb));
+extern int l2tp_session_queue_purge(struct l2tp_session *session);
 extern int l2tp_udp_encap_recv(struct sock *sk, struct sk_buff *skb);
 
 extern int l2tp_xmit_skb(struct l2tp_session *session, struct sk_buff *skb, int hdr_len);
diff --git a/net/l2tp/l2tp_debugfs.c b/net/l2tp/l2tp_debugfs.c
index c3813bc84552..072d7202e182 100644
--- a/net/l2tp/l2tp_debugfs.c
+++ b/net/l2tp/l2tp_debugfs.c
@@ -146,14 +146,14 @@ static void l2tp_dfs_seq_tunnel_show(struct seq_file *m, void *v)
                    tunnel->sock ? atomic_read(&tunnel->sock->sk_refcnt) : 0,
                    atomic_read(&tunnel->ref_count));
 
-        seq_printf(m, " %08x rx %llu/%llu/%llu rx %llu/%llu/%llu\n",
+        seq_printf(m, " %08x rx %ld/%ld/%ld rx %ld/%ld/%ld\n",
                    tunnel->debug,
-                   (unsigned long long)tunnel->stats.tx_packets,
-                   (unsigned long long)tunnel->stats.tx_bytes,
-                   (unsigned long long)tunnel->stats.tx_errors,
-                   (unsigned long long)tunnel->stats.rx_packets,
-                   (unsigned long long)tunnel->stats.rx_bytes,
-                   (unsigned long long)tunnel->stats.rx_errors);
+                   atomic_long_read(&tunnel->stats.tx_packets),
+                   atomic_long_read(&tunnel->stats.tx_bytes),
+                   atomic_long_read(&tunnel->stats.tx_errors),
+                   atomic_long_read(&tunnel->stats.rx_packets),
+                   atomic_long_read(&tunnel->stats.rx_bytes),
+                   atomic_long_read(&tunnel->stats.rx_errors));
 
         if (tunnel->show != NULL)
                 tunnel->show(m, tunnel);
@@ -203,14 +203,14 @@ static void l2tp_dfs_seq_session_show(struct seq_file *m, void *v)
                 seq_printf(m, "\n");
         }
 
-        seq_printf(m, "   %hu/%hu tx %llu/%llu/%llu rx %llu/%llu/%llu\n",
+        seq_printf(m, "   %hu/%hu tx %ld/%ld/%ld rx %ld/%ld/%ld\n",
                    session->nr, session->ns,
-                   (unsigned long long)session->stats.tx_packets,
-                   (unsigned long long)session->stats.tx_bytes,
-                   (unsigned long long)session->stats.tx_errors,
-                   (unsigned long long)session->stats.rx_packets,
-                   (unsigned long long)session->stats.rx_bytes,
-                   (unsigned long long)session->stats.rx_errors);
+                   atomic_long_read(&session->stats.tx_packets),
+                   atomic_long_read(&session->stats.tx_bytes),
+                   atomic_long_read(&session->stats.tx_errors),
+                   atomic_long_read(&session->stats.rx_packets),
+                   atomic_long_read(&session->stats.rx_bytes),
+                   atomic_long_read(&session->stats.rx_errors));
 
         if (session->show != NULL)
                 session->show(m, session);
diff --git a/net/l2tp/l2tp_ip.c b/net/l2tp/l2tp_ip.c
index 7f41b7051269..571db8dd2292 100644
--- a/net/l2tp/l2tp_ip.c
+++ b/net/l2tp/l2tp_ip.c
@@ -228,10 +228,16 @@ static void l2tp_ip_close(struct sock *sk, long timeout)
 static void l2tp_ip_destroy_sock(struct sock *sk)
 {
         struct sk_buff *skb;
+        struct l2tp_tunnel *tunnel = l2tp_sock_to_tunnel(sk);
 
         while ((skb = __skb_dequeue_tail(&sk->sk_write_queue)) != NULL)
                 kfree_skb(skb);
 
+        if (tunnel) {
+                l2tp_tunnel_closeall(tunnel);
+                sock_put(sk);
+        }
+
         sk_refcnt_debug_dec(sk);
 }
 
diff --git a/net/l2tp/l2tp_ip6.c b/net/l2tp/l2tp_ip6.c
index 41f2f8126ebc..c74f5a91ff6a 100644
--- a/net/l2tp/l2tp_ip6.c
+++ b/net/l2tp/l2tp_ip6.c
@@ -241,10 +241,17 @@ static void l2tp_ip6_close(struct sock *sk, long timeout)
 
 static void l2tp_ip6_destroy_sock(struct sock *sk)
 {
+        struct l2tp_tunnel *tunnel = l2tp_sock_to_tunnel(sk);
+
         lock_sock(sk);
         ip6_flush_pending_frames(sk);
         release_sock(sk);
 
+        if (tunnel) {
+                l2tp_tunnel_closeall(tunnel);
+                sock_put(sk);
+        }
+
         inet6_destroy_sock(sk);
 }
 
diff --git a/net/l2tp/l2tp_netlink.c b/net/l2tp/l2tp_netlink.c
index c1bab22db85e..0825ff26e113 100644
--- a/net/l2tp/l2tp_netlink.c
+++ b/net/l2tp/l2tp_netlink.c
@@ -246,8 +246,6 @@ static int l2tp_nl_tunnel_send(struct sk_buff *skb, u32 portid, u32 seq, int fla
 #if IS_ENABLED(CONFIG_IPV6)
         struct ipv6_pinfo *np = NULL;
 #endif
-        struct l2tp_stats stats;
-        unsigned int start;
 
         hdr = genlmsg_put(skb, portid, seq, &l2tp_nl_family, flags,
                           L2TP_CMD_TUNNEL_GET);
@@ -265,28 +263,22 @@ static int l2tp_nl_tunnel_send(struct sk_buff *skb, u32 portid, u32 seq, int fla
         if (nest == NULL)
                 goto nla_put_failure;
 
-        do {
-                start = u64_stats_fetch_begin(&tunnel->stats.syncp);
-                stats.tx_packets = tunnel->stats.tx_packets;
-                stats.tx_bytes = tunnel->stats.tx_bytes;
-                stats.tx_errors = tunnel->stats.tx_errors;
-                stats.rx_packets = tunnel->stats.rx_packets;
-                stats.rx_bytes = tunnel->stats.rx_bytes;
-                stats.rx_errors = tunnel->stats.rx_errors;
-                stats.rx_seq_discards = tunnel->stats.rx_seq_discards;
-                stats.rx_oos_packets = tunnel->stats.rx_oos_packets;
-        } while (u64_stats_fetch_retry(&tunnel->stats.syncp, start));
-
-        if (nla_put_u64(skb, L2TP_ATTR_TX_PACKETS, stats.tx_packets) ||
-            nla_put_u64(skb, L2TP_ATTR_TX_BYTES, stats.tx_bytes) ||
-            nla_put_u64(skb, L2TP_ATTR_TX_ERRORS, stats.tx_errors) ||
-            nla_put_u64(skb, L2TP_ATTR_RX_PACKETS, stats.rx_packets) ||
-            nla_put_u64(skb, L2TP_ATTR_RX_BYTES, stats.rx_bytes) ||
+        if (nla_put_u64(skb, L2TP_ATTR_TX_PACKETS,
+                    atomic_long_read(&tunnel->stats.tx_packets)) ||
+            nla_put_u64(skb, L2TP_ATTR_TX_BYTES,
+                    atomic_long_read(&tunnel->stats.tx_bytes)) ||
+            nla_put_u64(skb, L2TP_ATTR_TX_ERRORS,
+                    atomic_long_read(&tunnel->stats.tx_errors)) ||
+            nla_put_u64(skb, L2TP_ATTR_RX_PACKETS,
+                    atomic_long_read(&tunnel->stats.rx_packets)) ||
+            nla_put_u64(skb, L2TP_ATTR_RX_BYTES,
+                    atomic_long_read(&tunnel->stats.rx_bytes)) ||
             nla_put_u64(skb, L2TP_ATTR_RX_SEQ_DISCARDS,
-                        stats.rx_seq_discards) ||
+                    atomic_long_read(&tunnel->stats.rx_seq_discards)) ||
             nla_put_u64(skb, L2TP_ATTR_RX_OOS_PACKETS,
-                        stats.rx_oos_packets) ||
-            nla_put_u64(skb, L2TP_ATTR_RX_ERRORS, stats.rx_errors))
+                    atomic_long_read(&tunnel->stats.rx_oos_packets)) ||
+            nla_put_u64(skb, L2TP_ATTR_RX_ERRORS,
+                    atomic_long_read(&tunnel->stats.rx_errors)))
                 goto nla_put_failure;
         nla_nest_end(skb, nest);
 
@@ -612,8 +604,6 @@ static int l2tp_nl_session_send(struct sk_buff *skb, u32 portid, u32 seq, int fl
         struct nlattr *nest;
         struct l2tp_tunnel *tunnel = session->tunnel;
         struct sock *sk = NULL;
-        struct l2tp_stats stats;
-        unsigned int start;
 
         sk = tunnel->sock;
 
@@ -656,28 +646,22 @@ static int l2tp_nl_session_send(struct sk_buff *skb, u32 portid, u32 seq, int fl
         if (nest == NULL)
                 goto nla_put_failure;
 
-        do {
-                start = u64_stats_fetch_begin(&session->stats.syncp);
-                stats.tx_packets = session->stats.tx_packets;
-                stats.tx_bytes = session->stats.tx_bytes;
-                stats.tx_errors = session->stats.tx_errors;
-                stats.rx_packets = session->stats.rx_packets;
-                stats.rx_bytes = session->stats.rx_bytes;
-                stats.rx_errors = session->stats.rx_errors;
-                stats.rx_seq_discards = session->stats.rx_seq_discards;
-                stats.rx_oos_packets = session->stats.rx_oos_packets;
-        } while (u64_stats_fetch_retry(&session->stats.syncp, start));
-
-        if (nla_put_u64(skb, L2TP_ATTR_TX_PACKETS, stats.tx_packets) ||
-            nla_put_u64(skb, L2TP_ATTR_TX_BYTES, stats.tx_bytes) ||
-            nla_put_u64(skb, L2TP_ATTR_TX_ERRORS, stats.tx_errors) ||
-            nla_put_u64(skb, L2TP_ATTR_RX_PACKETS, stats.rx_packets) ||
-            nla_put_u64(skb, L2TP_ATTR_RX_BYTES, stats.rx_bytes) ||
+        if (nla_put_u64(skb, L2TP_ATTR_TX_PACKETS,
+                atomic_long_read(&session->stats.tx_packets)) ||
+            nla_put_u64(skb, L2TP_ATTR_TX_BYTES,
+                atomic_long_read(&session->stats.tx_bytes)) ||
+            nla_put_u64(skb, L2TP_ATTR_TX_ERRORS,
+                atomic_long_read(&session->stats.tx_errors)) ||
+            nla_put_u64(skb, L2TP_ATTR_RX_PACKETS,
+                atomic_long_read(&session->stats.rx_packets)) ||
+            nla_put_u64(skb, L2TP_ATTR_RX_BYTES,
+                atomic_long_read(&session->stats.rx_bytes)) ||
             nla_put_u64(skb, L2TP_ATTR_RX_SEQ_DISCARDS,
-                        stats.rx_seq_discards) ||
+                atomic_long_read(&session->stats.rx_seq_discards)) ||
             nla_put_u64(skb, L2TP_ATTR_RX_OOS_PACKETS,
-                        stats.rx_oos_packets) ||
-            nla_put_u64(skb, L2TP_ATTR_RX_ERRORS, stats.rx_errors))
+                atomic_long_read(&session->stats.rx_oos_packets)) ||
+            nla_put_u64(skb, L2TP_ATTR_RX_ERRORS,
+                atomic_long_read(&session->stats.rx_errors)))
                 goto nla_put_failure;
         nla_nest_end(skb, nest);
 
diff --git a/net/l2tp/l2tp_ppp.c b/net/l2tp/l2tp_ppp.c
index 6a53371dba1f..637a341c1e2d 100644
--- a/net/l2tp/l2tp_ppp.c
+++ b/net/l2tp/l2tp_ppp.c
@@ -97,6 +97,7 @@
 #include <net/ip.h>
 #include <net/udp.h>
 #include <net/xfrm.h>
+#include <net/inet_common.h>
 
 #include <asm/byteorder.h>
 #include <linux/atomic.h>
@@ -259,7 +260,7 @@ static void pppol2tp_recv(struct l2tp_session *session, struct sk_buff *skb, int
                           session->name);
 
                 /* Not bound. Nothing we can do, so discard. */
-                session->stats.rx_errors++;
+                atomic_long_inc(&session->stats.rx_errors);
                 kfree_skb(skb);
         }
 
@@ -447,34 +448,16 @@ static void pppol2tp_session_close(struct l2tp_session *session)
 {
         struct pppol2tp_session *ps = l2tp_session_priv(session);
         struct sock *sk = ps->sock;
-        struct sk_buff *skb;
+        struct socket *sock = sk->sk_socket;
 
         BUG_ON(session->magic != L2TP_SESSION_MAGIC);
 
-        if (session->session_id == 0)
-                goto out;
-
-        if (sk != NULL) {
-                lock_sock(sk);
-
-                if (sk->sk_state & (PPPOX_CONNECTED | PPPOX_BOUND)) {
-                        pppox_unbind_sock(sk);
-                        sk->sk_state = PPPOX_DEAD;
-                        sk->sk_state_change(sk);
-                }
-
-                /* Purge any queued data */
-                skb_queue_purge(&sk->sk_receive_queue);
-                skb_queue_purge(&sk->sk_write_queue);
-                while ((skb = skb_dequeue(&session->reorder_q))) {
-                        kfree_skb(skb);
-                        sock_put(sk);
-                }
 
-                release_sock(sk);
+        if (sock) {
+                inet_shutdown(sock, 2);
+                /* Don't let the session go away before our socket does */
+                l2tp_session_inc_refcount(session);
         }
-
-out:
         return;
 }
 
@@ -483,19 +466,12 @@ out:
  */
 static void pppol2tp_session_destruct(struct sock *sk)
 {
-        struct l2tp_session *session;
-
-        if (sk->sk_user_data != NULL) {
-                session = sk->sk_user_data;
-                if (session == NULL)
-                        goto out;
-
+        struct l2tp_session *session = sk->sk_user_data;
+        if (session) {
                 sk->sk_user_data = NULL;
                 BUG_ON(session->magic != L2TP_SESSION_MAGIC);
                 l2tp_session_dec_refcount(session);
         }
-
-out:
         return;
 }
 
@@ -525,16 +501,13 @@ static int pppol2tp_release(struct socket *sock)
         session = pppol2tp_sock_to_session(sk);
 
         /* Purge any queued data */
-        skb_queue_purge(&sk->sk_receive_queue);
-        skb_queue_purge(&sk->sk_write_queue);
         if (session != NULL) {
-                struct sk_buff *skb;
-                while ((skb = skb_dequeue(&session->reorder_q))) {
-                        kfree_skb(skb);
-                        sock_put(sk);
-                }
+                __l2tp_session_unhash(session);
+                l2tp_session_queue_purge(session);
                 sock_put(sk);
         }
+        skb_queue_purge(&sk->sk_receive_queue);
+        skb_queue_purge(&sk->sk_write_queue);
 
         release_sock(sk);
 
@@ -880,18 +853,6 @@ out:
         return error;
 }
 
-/* Called when deleting sessions via the netlink interface.
- */
-static int pppol2tp_session_delete(struct l2tp_session *session)
-{
-        struct pppol2tp_session *ps = l2tp_session_priv(session);
-
-        if (ps->sock == NULL)
-                l2tp_session_dec_refcount(session);
-
-        return 0;
-}
-
 #endif /* CONFIG_L2TP_V3 */
 
 /* getname() support.
@@ -1025,14 +986,14 @@ end:
 static void pppol2tp_copy_stats(struct pppol2tp_ioc_stats *dest,
                                 struct l2tp_stats *stats)
 {
-        dest->tx_packets = stats->tx_packets;
-        dest->tx_bytes = stats->tx_bytes;
-        dest->tx_errors = stats->tx_errors;
-        dest->rx_packets = stats->rx_packets;
-        dest->rx_bytes = stats->rx_bytes;
-        dest->rx_seq_discards = stats->rx_seq_discards;
-        dest->rx_oos_packets = stats->rx_oos_packets;
-        dest->rx_errors = stats->rx_errors;
+        dest->tx_packets = atomic_long_read(&stats->tx_packets);
+        dest->tx_bytes = atomic_long_read(&stats->tx_bytes);
+        dest->tx_errors = atomic_long_read(&stats->tx_errors);
+        dest->rx_packets = atomic_long_read(&stats->rx_packets);
+        dest->rx_bytes = atomic_long_read(&stats->rx_bytes);
+        dest->rx_seq_discards = atomic_long_read(&stats->rx_seq_discards);
+        dest->rx_oos_packets = atomic_long_read(&stats->rx_oos_packets);
+        dest->rx_errors = atomic_long_read(&stats->rx_errors);
 }
 
 /* Session ioctl helper.
@@ -1666,14 +1627,14 @@ static void pppol2tp_seq_tunnel_show(struct seq_file *m, void *v)
                    tunnel->name,
                    (tunnel == tunnel->sock->sk_user_data) ? 'Y' : 'N',
                    atomic_read(&tunnel->ref_count) - 1);
-        seq_printf(m, " %08x %llu/%llu/%llu %llu/%llu/%llu\n",
+        seq_printf(m, " %08x %ld/%ld/%ld %ld/%ld/%ld\n",
                    tunnel->debug,
-                   (unsigned long long)tunnel->stats.tx_packets,
-                   (unsigned long long)tunnel->stats.tx_bytes,
-                   (unsigned long long)tunnel->stats.tx_errors,
-                   (unsigned long long)tunnel->stats.rx_packets,
-                   (unsigned long long)tunnel->stats.rx_bytes,
-                   (unsigned long long)tunnel->stats.rx_errors);
+                   atomic_long_read(&tunnel->stats.tx_packets),
+                   atomic_long_read(&tunnel->stats.tx_bytes),
+                   atomic_long_read(&tunnel->stats.tx_errors),
+                   atomic_long_read(&tunnel->stats.rx_packets),
+                   atomic_long_read(&tunnel->stats.rx_bytes),
+                   atomic_long_read(&tunnel->stats.rx_errors));
 }
 
 static void pppol2tp_seq_session_show(struct seq_file *m, void *v)
@@ -1708,14 +1669,14 @@ static void pppol2tp_seq_session_show(struct seq_file *m, void *v)
                    session->lns_mode ? "LNS" : "LAC",
                    session->debug,
                    jiffies_to_msecs(session->reorder_timeout));
-        seq_printf(m, "   %hu/%hu %llu/%llu/%llu %llu/%llu/%llu\n",
+        seq_printf(m, "   %hu/%hu %ld/%ld/%ld %ld/%ld/%ld\n",
                    session->nr, session->ns,
-                   (unsigned long long)session->stats.tx_packets,
-                   (unsigned long long)session->stats.tx_bytes,
-                   (unsigned long long)session->stats.tx_errors,
-                   (unsigned long long)session->stats.rx_packets,
-                   (unsigned long long)session->stats.rx_bytes,
-                   (unsigned long long)session->stats.rx_errors);
+                   atomic_long_read(&session->stats.tx_packets),
+                   atomic_long_read(&session->stats.tx_bytes),
+                   atomic_long_read(&session->stats.tx_errors),
+                   atomic_long_read(&session->stats.rx_packets),
+                   atomic_long_read(&session->stats.rx_bytes),
+                   atomic_long_read(&session->stats.rx_errors));
 
         if (po)
                 seq_printf(m, "   interface %s\n", ppp_dev_name(&po->chan));
@@ -1839,7 +1800,7 @@ static const struct pppox_proto pppol2tp_proto = {
 
 static const struct l2tp_nl_cmd_ops pppol2tp_nl_cmd_ops = {
         .session_create = pppol2tp_session_create,
-        .session_delete = pppol2tp_session_delete,
+        .session_delete = l2tp_session_delete,
 };
 
 #endif /* CONFIG_L2TP_V3 */
diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c
index 47edf5a40a59..61f49d241712 100644
--- a/net/netfilter/ipvs/ip_vs_core.c
+++ b/net/netfilter/ipvs/ip_vs_core.c
@@ -1394,10 +1394,8 @@ ip_vs_in_icmp(struct sk_buff *skb, int *related, unsigned int hooknum)
                         skb_reset_network_header(skb);
                         IP_VS_DBG(12, "ICMP for IPIP %pI4->%pI4: mtu=%u\n",
                                 &ip_hdr(skb)->saddr, &ip_hdr(skb)->daddr, mtu);
-                        rcu_read_lock();
                         ipv4_update_pmtu(skb, dev_net(skb->dev),
                                          mtu, 0, 0, 0, 0);
-                        rcu_read_unlock();
                         /* Client uses PMTUD? */
                         if (!(cih->frag_off & htons(IP_DF)))
                                 goto ignore_ipip;
@@ -1577,7 +1575,8 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb, int af)
         }
         /* ipvs enabled in this netns ? */
         net = skb_net(skb);
-        if (!net_ipvs(net)->enable)
+        ipvs = net_ipvs(net);
+        if (unlikely(sysctl_backup_only(ipvs) || !ipvs->enable))
                 return NF_ACCEPT;
 
         ip_vs_fill_iph_skb(af, skb, &iph);
@@ -1654,7 +1653,6 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb, int af)
         }
 
         IP_VS_DBG_PKT(11, af, pp, skb, 0, "Incoming packet");
-        ipvs = net_ipvs(net);
         /* Check the server status */
         if (cp->dest && !(cp->dest->flags & IP_VS_DEST_F_AVAILABLE)) {
                 /* the destination server is not available */
@@ -1815,13 +1813,15 @@ ip_vs_forward_icmp(unsigned int hooknum, struct sk_buff *skb,
 {
         int r;
         struct net *net;
+        struct netns_ipvs *ipvs;
 
         if (ip_hdr(skb)->protocol != IPPROTO_ICMP)
                 return NF_ACCEPT;
 
         /* ipvs enabled in this netns ? */
         net = skb_net(skb);
-        if (!net_ipvs(net)->enable)
+        ipvs = net_ipvs(net);
+        if (unlikely(sysctl_backup_only(ipvs) || !ipvs->enable))
                 return NF_ACCEPT;
 
         return ip_vs_in_icmp(skb, &r, hooknum);
@@ -1835,6 +1835,7 @@ ip_vs_forward_icmp_v6(unsigned int hooknum, struct sk_buff *skb,
 {
         int r;
         struct net *net;
+        struct netns_ipvs *ipvs;
         struct ip_vs_iphdr iphdr;
 
         ip_vs_fill_iph_skb(AF_INET6, skb, &iphdr);
@@ -1843,7 +1844,8 @@ ip_vs_forward_icmp_v6(unsigned int hooknum, struct sk_buff *skb,
 
         /* ipvs enabled in this netns ? */
         net = skb_net(skb);
-        if (!net_ipvs(net)->enable)
+        ipvs = net_ipvs(net);
+        if (unlikely(sysctl_backup_only(ipvs) || !ipvs->enable))
                 return NF_ACCEPT;
 
         return ip_vs_in_icmp_v6(skb, &r, hooknum, &iphdr);
diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
index c68198bf9128..9e2d1cccd1eb 100644
--- a/net/netfilter/ipvs/ip_vs_ctl.c
+++ b/net/netfilter/ipvs/ip_vs_ctl.c
@@ -1808,6 +1808,12 @@ static struct ctl_table vs_vars[] = {
                 .mode           = 0644,
                 .proc_handler   = proc_dointvec,
         },
+        {
+                .procname       = "backup_only",
+                .maxlen         = sizeof(int),
+                .mode           = 0644,
+                .proc_handler   = proc_dointvec,
+        },
 #ifdef CONFIG_IP_VS_DEBUG
         {
                 .procname       = "debug_level",
@@ -3741,6 +3747,7 @@ static int __net_init ip_vs_control_net_init_sysctl(struct net *net)
         tbl[idx++].data = &ipvs->sysctl_nat_icmp_send;
         ipvs->sysctl_pmtu_disc = 1;
         tbl[idx++].data = &ipvs->sysctl_pmtu_disc;
+        tbl[idx++].data = &ipvs->sysctl_backup_only;
 
 
         ipvs->sysctl_hdr = register_net_sysctl(net, "net/ipv4/vs", tbl);
diff --git a/net/netfilter/ipvs/ip_vs_proto_sctp.c b/net/netfilter/ipvs/ip_vs_proto_sctp.c
index ae8ec6f27688..cd1d7298f7ba 100644
--- a/net/netfilter/ipvs/ip_vs_proto_sctp.c
+++ b/net/netfilter/ipvs/ip_vs_proto_sctp.c
@@ -906,7 +906,7 @@ set_sctp_state(struct ip_vs_proto_data *pd, struct ip_vs_conn *cp,
         sctp_chunkhdr_t _sctpch, *sch;
         unsigned char chunk_type;
         int event, next_state;
-        int ihl;
+        int ihl, cofs;
 
 #ifdef CONFIG_IP_VS_IPV6
         ihl = cp->af == AF_INET ? ip_hdrlen(skb) : sizeof(struct ipv6hdr);
@@ -914,8 +914,8 @@ set_sctp_state(struct ip_vs_proto_data *pd, struct ip_vs_conn *cp,
         ihl = ip_hdrlen(skb);
 #endif
 
-        sch = skb_header_pointer(skb, ihl + sizeof(sctp_sctphdr_t),
-                                sizeof(_sctpch), &_sctpch);
+        cofs = ihl + sizeof(sctp_sctphdr_t);
+        sch = skb_header_pointer(skb, cofs, sizeof(_sctpch), &_sctpch);
         if (sch == NULL)
                 return;
 
@@ -933,10 +933,12 @@ set_sctp_state(struct ip_vs_proto_data *pd, struct ip_vs_conn *cp,
          */
         if ((sch->type == SCTP_CID_COOKIE_ECHO) ||
             (sch->type == SCTP_CID_COOKIE_ACK)) {
-                sch = skb_header_pointer(skb, (ihl + sizeof(sctp_sctphdr_t) +
-                                sch->length), sizeof(_sctpch), &_sctpch);
-                if (sch) {
-                        if (sch->type == SCTP_CID_ABORT)
+                int clen = ntohs(sch->length);
+
+                if (clen >= sizeof(sctp_chunkhdr_t)) {
+                        sch = skb_header_pointer(skb, cofs + ALIGN(clen, 4),
+                                                 sizeof(_sctpch), &_sctpch);
+                        if (sch && sch->type == SCTP_CID_ABORT)
                                 chunk_type = sch->type;
                 }
         }
diff --git a/net/netfilter/nf_conntrack_proto_dccp.c b/net/netfilter/nf_conntrack_proto_dccp.c
index 432f95780003..ba65b2041eb4 100644
--- a/net/netfilter/nf_conntrack_proto_dccp.c
+++ b/net/netfilter/nf_conntrack_proto_dccp.c
@@ -969,6 +969,10 @@ static int __init nf_conntrack_proto_dccp_init(void)
 {
         int ret;
 
+        ret = register_pernet_subsys(&dccp_net_ops);
+        if (ret < 0)
+                goto out_pernet;
+
         ret = nf_ct_l4proto_register(&dccp_proto4);
         if (ret < 0)
                 goto out_dccp4;
@@ -977,16 +981,12 @@ static int __init nf_conntrack_proto_dccp_init(void)
         if (ret < 0)
                 goto out_dccp6;
 
-        ret = register_pernet_subsys(&dccp_net_ops);
-        if (ret < 0)
-                goto out_pernet;
-
         return 0;
-out_pernet:
-        nf_ct_l4proto_unregister(&dccp_proto6);
 out_dccp6:
         nf_ct_l4proto_unregister(&dccp_proto4);
 out_dccp4:
+        unregister_pernet_subsys(&dccp_net_ops);
+out_pernet:
         return ret;
 }
 
diff --git a/net/netfilter/nf_conntrack_proto_gre.c b/net/netfilter/nf_conntrack_proto_gre.c
index bd7d01d9c7e7..155ce9f8a0db 100644
--- a/net/netfilter/nf_conntrack_proto_gre.c
+++ b/net/netfilter/nf_conntrack_proto_gre.c
@@ -420,18 +420,18 @@ static int __init nf_ct_proto_gre_init(void)
 {
         int ret;
 
-        ret = nf_ct_l4proto_register(&nf_conntrack_l4proto_gre4);
-        if (ret < 0)
-                goto out_gre4;
-
         ret = register_pernet_subsys(&proto_gre_net_ops);
         if (ret < 0)
                 goto out_pernet;
 
+        ret = nf_ct_l4proto_register(&nf_conntrack_l4proto_gre4);
+        if (ret < 0)
+                goto out_gre4;
+
         return 0;
-out_pernet:
-        nf_ct_l4proto_unregister(&nf_conntrack_l4proto_gre4);
 out_gre4:
+        unregister_pernet_subsys(&proto_gre_net_ops);
+out_pernet:
         return ret;
 }
 
diff --git a/net/netfilter/nf_conntrack_proto_sctp.c b/net/netfilter/nf_conntrack_proto_sctp.c
index 480f616d5936..ec83536def9a 100644
--- a/net/netfilter/nf_conntrack_proto_sctp.c
+++ b/net/netfilter/nf_conntrack_proto_sctp.c
@@ -888,6 +888,10 @@ static int __init nf_conntrack_proto_sctp_init(void)
 {
         int ret;
 
+        ret = register_pernet_subsys(&sctp_net_ops);
+        if (ret < 0)
+                goto out_pernet;
+
         ret = nf_ct_l4proto_register(&nf_conntrack_l4proto_sctp4);
         if (ret < 0)
                 goto out_sctp4;
@@ -896,16 +900,12 @@ static int __init nf_conntrack_proto_sctp_init(void)
         if (ret < 0)
                 goto out_sctp6;
 
-        ret = register_pernet_subsys(&sctp_net_ops);
-        if (ret < 0)
-                goto out_pernet;
-
         return 0;
-out_pernet:
-        nf_ct_l4proto_unregister(&nf_conntrack_l4proto_sctp6);
 out_sctp6:
         nf_ct_l4proto_unregister(&nf_conntrack_l4proto_sctp4);
 out_sctp4:
+        unregister_pernet_subsys(&sctp_net_ops);
+out_pernet:
         return ret;
 }
 
diff --git a/net/netfilter/nf_conntrack_proto_udplite.c b/net/netfilter/nf_conntrack_proto_udplite.c
index 157489581c31..ca969f6273f7 100644
--- a/net/netfilter/nf_conntrack_proto_udplite.c
+++ b/net/netfilter/nf_conntrack_proto_udplite.c
@@ -371,6 +371,10 @@ static int __init nf_conntrack_proto_udplite_init(void)
 {
         int ret;
 
+        ret = register_pernet_subsys(&udplite_net_ops);
+        if (ret < 0)
+                goto out_pernet;
+
         ret = nf_ct_l4proto_register(&nf_conntrack_l4proto_udplite4);
         if (ret < 0)
                 goto out_udplite4;
@@ -379,16 +383,12 @@ static int __init nf_conntrack_proto_udplite_init(void)
         if (ret < 0)
                 goto out_udplite6;
 
-        ret = register_pernet_subsys(&udplite_net_ops);
-        if (ret < 0)
-                goto out_pernet;
-
         return 0;
-out_pernet:
-        nf_ct_l4proto_unregister(&nf_conntrack_l4proto_udplite6);
 out_udplite6:
         nf_ct_l4proto_unregister(&nf_conntrack_l4proto_udplite4);
 out_udplite4:
+        unregister_pernet_subsys(&udplite_net_ops);
+out_pernet:
         return ret;
 }
 
diff --git a/net/netfilter/nfnetlink_queue_core.c b/net/netfilter/nfnetlink_queue_core.c
index 858fd52c1040..1cb48540f86a 100644
--- a/net/netfilter/nfnetlink_queue_core.c
+++ b/net/netfilter/nfnetlink_queue_core.c
@@ -112,7 +112,7 @@ instance_create(u_int16_t queue_num, int portid)
         inst->queue_num = queue_num;
         inst->peer_portid = portid;
         inst->queue_maxlen = NFQNL_QMAX_DEFAULT;
-        inst->copy_range = 0xfffff;
+        inst->copy_range = 0xffff;
         inst->copy_mode = NFQNL_COPY_NONE;
         spin_lock_init(&inst->lock);
         INIT_LIST_HEAD(&inst->queue_list);
diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c
index f2aabb6f4105..5a55be3f17a5 100644
--- a/net/netlink/genetlink.c
+++ b/net/netlink/genetlink.c
@@ -142,6 +142,7 @@ int genl_register_mc_group(struct genl_family *family,
         int err = 0;
 
         BUG_ON(grp->name[0] == '\0');
+        BUG_ON(memchr(grp->name, '\0', GENL_NAMSIZ) == NULL);
 
         genl_lock();
 
diff --git a/net/nfc/llcp/llcp.c b/net/nfc/llcp/llcp.c
index 7f8266dd14cb..b530afadd76c 100644
--- a/net/nfc/llcp/llcp.c
+++ b/net/nfc/llcp/llcp.c
@@ -68,7 +68,8 @@ static void nfc_llcp_socket_purge(struct nfc_llcp_sock *sock)
         }
 }
 
-static void nfc_llcp_socket_release(struct nfc_llcp_local *local, bool listen)
+static void nfc_llcp_socket_release(struct nfc_llcp_local *local, bool listen,
+                                    int err)
 {
         struct sock *sk;
         struct hlist_node *tmp;
@@ -100,7 +101,10 @@ static void nfc_llcp_socket_release(struct nfc_llcp_local *local, bool listen)
 
                                 nfc_llcp_accept_unlink(accept_sk);
 
+                                if (err)
+                                        accept_sk->sk_err = err;
                                 accept_sk->sk_state = LLCP_CLOSED;
+                                accept_sk->sk_state_change(sk);
 
                                 bh_unlock_sock(accept_sk);
 
@@ -123,7 +127,10 @@ static void nfc_llcp_socket_release(struct nfc_llcp_local *local, bool listen)
                         continue;
                 }
 
+                if (err)
+                        sk->sk_err = err;
                 sk->sk_state = LLCP_CLOSED;
+                sk->sk_state_change(sk);
 
                 bh_unlock_sock(sk);
 
@@ -133,6 +140,36 @@ static void nfc_llcp_socket_release(struct nfc_llcp_local *local, bool listen)
         }
 
         write_unlock(&local->sockets.lock);
+
+        /*
+         * If we want to keep the listening sockets alive,
+         * we don't touch the RAW ones.
+         */
+        if (listen == true)
+                return;
+
+        write_lock(&local->raw_sockets.lock);
+
+        sk_for_each_safe(sk, tmp, &local->raw_sockets.head) {
+                llcp_sock = nfc_llcp_sock(sk);
+
+                bh_lock_sock(sk);
+
+                nfc_llcp_socket_purge(llcp_sock);
+
+                if (err)
+                        sk->sk_err = err;
+                sk->sk_state = LLCP_CLOSED;
+                sk->sk_state_change(sk);
+
+                bh_unlock_sock(sk);
+
+                sock_orphan(sk);
+
+                sk_del_node_init(sk);
+        }
+
+        write_unlock(&local->raw_sockets.lock);
 }
 
 struct nfc_llcp_local *nfc_llcp_local_get(struct nfc_llcp_local *local)
@@ -142,20 +179,25 @@ struct nfc_llcp_local *nfc_llcp_local_get(struct nfc_llcp_local *local)
         return local;
 }
 
-static void local_release(struct kref *ref)
+static void local_cleanup(struct nfc_llcp_local *local, bool listen)
 {
-        struct nfc_llcp_local *local;
-
-        local = container_of(ref, struct nfc_llcp_local, ref);
-
-        list_del(&local->list);
-        nfc_llcp_socket_release(local, false);
+        nfc_llcp_socket_release(local, listen, ENXIO);
         del_timer_sync(&local->link_timer);
         skb_queue_purge(&local->tx_queue);
         cancel_work_sync(&local->tx_work);
         cancel_work_sync(&local->rx_work);
         cancel_work_sync(&local->timeout_work);
         kfree_skb(local->rx_pending);
+}
+
+static void local_release(struct kref *ref)
+{
+        struct nfc_llcp_local *local;
+
+        local = container_of(ref, struct nfc_llcp_local, ref);
+
+        list_del(&local->list);
+        local_cleanup(local, false);
         kfree(local);
 }
 
@@ -1348,7 +1390,7 @@ void nfc_llcp_mac_is_down(struct nfc_dev *dev)
                 return;
 
         /* Close and purge all existing sockets */
-        nfc_llcp_socket_release(local, true);
+        nfc_llcp_socket_release(local, true, 0);
 }
 
 void nfc_llcp_mac_is_up(struct nfc_dev *dev, u32 target_idx,
@@ -1427,6 +1469,8 @@ void nfc_llcp_unregister_device(struct nfc_dev *dev)
                 return;
         }
 
+        local_cleanup(local, false);
+
         nfc_llcp_local_put(local);
 }
 
diff --git a/net/nfc/llcp/sock.c b/net/nfc/llcp/sock.c
index 5332751943a9..5c7cdf3f2a83 100644
--- a/net/nfc/llcp/sock.c
+++ b/net/nfc/llcp/sock.c
@@ -278,6 +278,8 @@ struct sock *nfc_llcp_accept_dequeue(struct sock *parent,
 
                         pr_debug("Returning sk state %d\n", sk->sk_state);
 
+                        sk_acceptq_removed(parent);
+
                         return sk;
                 }
 
diff --git a/net/openvswitch/actions.c b/net/openvswitch/actions.c
index ac2defeeba83..d4d5363c7ba7 100644
--- a/net/openvswitch/actions.c
+++ b/net/openvswitch/actions.c
@@ -58,7 +58,7 @@ static int __pop_vlan_tci(struct sk_buff *skb, __be16 *current_tci)
 
         if (skb->ip_summed == CHECKSUM_COMPLETE)
                 skb->csum = csum_sub(skb->csum, csum_partial(skb->data
-                                        + ETH_HLEN, VLAN_HLEN, 0));
+                                        + (2 * ETH_ALEN), VLAN_HLEN, 0));
 
         vhdr = (struct vlan_hdr *)(skb->data + ETH_HLEN);
         *current_tci = vhdr->h_vlan_TCI;
@@ -115,7 +115,7 @@ static int push_vlan(struct sk_buff *skb, const struct ovs_action_push_vlan *vla
 
                 if (skb->ip_summed == CHECKSUM_COMPLETE)
                         skb->csum = csum_add(skb->csum, csum_partial(skb->data
-                                        + ETH_HLEN, VLAN_HLEN, 0));
+                                        + (2 * ETH_ALEN), VLAN_HLEN, 0));
 
         }
         __vlan_hwaccel_put_tag(skb, ntohs(vlan->vlan_tci) & ~VLAN_TAG_PRESENT);
diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c
index e87a26506dba..a4b724708a1a 100644
--- a/net/openvswitch/datapath.c
+++ b/net/openvswitch/datapath.c
@@ -394,6 +394,7 @@ static int queue_userspace_packet(struct net *net, int dp_ifindex,
 
         skb_copy_and_csum_dev(skb, nla_data(nla));
 
+        genlmsg_end(user_skb, upcall);
         err = genlmsg_unicast(net, user_skb, upcall_info->portid);
 
 out:
@@ -1690,6 +1691,7 @@ static int ovs_vport_cmd_new(struct sk_buff *skb, struct genl_info *info)
         if (IS_ERR(vport))
                 goto exit_unlock;
 
+        err = 0;
         reply = ovs_vport_cmd_build_info(vport, info->snd_portid, info->snd_seq,
                                          OVS_VPORT_CMD_NEW);
         if (IS_ERR(reply)) {
@@ -1771,6 +1773,7 @@ static int ovs_vport_cmd_del(struct sk_buff *skb, struct genl_info *info)
         if (IS_ERR(reply))
                 goto exit_unlock;
 
+        err = 0;
         ovs_dp_detach_port(vport);
 
         genl_notify(reply, genl_info_net(info), info->snd_portid,
diff --git a/net/openvswitch/flow.c b/net/openvswitch/flow.c
index 20605ecf100b..fe0e4215c73d 100644
--- a/net/openvswitch/flow.c
+++ b/net/openvswitch/flow.c
@@ -482,7 +482,11 @@ static __be16 parse_ethertype(struct sk_buff *skb)
                 return htons(ETH_P_802_2);
 
         __skb_pull(skb, sizeof(struct llc_snap_hdr));
-        return llc->ethertype;
+
+        if (ntohs(llc->ethertype) >= 1536)
+                return llc->ethertype;
+
+        return htons(ETH_P_802_2);
 }
 
 static int parse_icmpv6(struct sk_buff *skb, struct sw_flow_key *key,
diff --git a/net/openvswitch/vport-netdev.c b/net/openvswitch/vport-netdev.c
index 670cbc3518de..2130d61c384a 100644
--- a/net/openvswitch/vport-netdev.c
+++ b/net/openvswitch/vport-netdev.c
@@ -43,8 +43,7 @@ static void netdev_port_receive(struct vport *vport, struct sk_buff *skb)
 
         /* Make our own copy of the packet.  Otherwise we will mangle the
          * packet for anyone who came before us (e.g. tcpdump via AF_PACKET).
-         * (No one comes after us, since we tell handle_bridge() that we took
-         * the packet.) */
+         */
         skb = skb_share_check(skb, GFP_ATOMIC);
         if (unlikely(!skb))
                 return;
diff --git a/net/openvswitch/vport.c b/net/openvswitch/vport.c
index ba717cc038b3..f6b8132ce4cb 100644
--- a/net/openvswitch/vport.c
+++ b/net/openvswitch/vport.c
@@ -325,8 +325,7 @@ int ovs_vport_get_options(const struct vport *vport, struct sk_buff *skb)
  * @skb: skb that was received
  *
  * Must be called with rcu_read_lock.  The packet cannot be shared and
- * skb->data should point to the Ethernet header.  The caller must have already
- * called compute_ip_summed() to initialize the checksumming fields.
+ * skb->data should point to the Ethernet header.
  */
 void ovs_vport_receive(struct vport *vport, struct sk_buff *skb)
 {
diff --git a/net/sctp/associola.c b/net/sctp/associola.c
index 43cd0dd9149d..d2709e2b7be6 100644
--- a/net/sctp/associola.c
+++ b/net/sctp/associola.c
@@ -1079,7 +1079,7 @@ struct sctp_transport *sctp_assoc_lookup_tsn(struct sctp_association *asoc,
                         transports) {
 
                 if (transport == active)
-                        break;
+                        continue;
                 list_for_each_entry(chunk, &transport->transmitted,
                                 transmitted_list) {
                         if (key == chunk->subh.data_hdr->tsn) {
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c
index 5131fcfedb03..de1a0138317f 100644
--- a/net/sctp/sm_statefuns.c
+++ b/net/sctp/sm_statefuns.c
@@ -2082,7 +2082,7 @@ sctp_disposition_t sctp_sf_do_5_2_4_dupcook(struct net *net,
         }
 
         /* Delete the tempory new association. */
-        sctp_add_cmd_sf(commands, SCTP_CMD_NEW_ASOC, SCTP_ASOC(new_asoc));
+        sctp_add_cmd_sf(commands, SCTP_CMD_SET_ASOC, SCTP_ASOC(new_asoc));
         sctp_add_cmd_sf(commands, SCTP_CMD_DELETE_TCB, SCTP_NULL());
 
         /* Restore association pointer to provide SCTP command interpeter
diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c
index fb20f25ddec9..f8529fc8e542 100644
--- a/net/sunrpc/sched.c
+++ b/net/sunrpc/sched.c
@@ -180,6 +180,8 @@ static void __rpc_add_wait_queue(struct rpc_wait_queue *queue,
                 list_add_tail(&task->u.tk_wait.list, &queue->tasks[0]);
         task->tk_waitqueue = queue;
         queue->qlen++;
+        /* barrier matches the read in rpc_wake_up_task_queue_locked() */
+        smp_wmb();
         rpc_set_queued(task);
 
         dprintk("RPC: %5u added to queue %p \"%s\"\n",
@@ -430,8 +432,11 @@ static void __rpc_do_wake_up_task(struct rpc_wait_queue *queue, struct rpc_task
  */
 static void rpc_wake_up_task_queue_locked(struct rpc_wait_queue *queue, struct rpc_task *task)
 {
-        if (RPC_IS_QUEUED(task) && task->tk_waitqueue == queue)
-                __rpc_do_wake_up_task(queue, task);
+        if (RPC_IS_QUEUED(task)) {
+                smp_rmb();
+                if (task->tk_waitqueue == queue)
+                        __rpc_do_wake_up_task(queue, task);
+        }
 }
 
 /*
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 51be64f163ec..971282b6f6a3 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -382,7 +382,7 @@ static void unix_sock_destructor(struct sock *sk)
 #endif
 }
 
-static int unix_release_sock(struct sock *sk, int embrion)
+static void unix_release_sock(struct sock *sk, int embrion)
 {
         struct unix_sock *u = unix_sk(sk);
         struct path path;
@@ -451,8 +451,6 @@ static int unix_release_sock(struct sock *sk, int embrion)
 
         if (unix_tot_inflight)
                 unix_gc();              /* Garbage collect fds */
-
-        return 0;
 }
 
 static void init_peercred(struct sock *sk)
@@ -699,9 +697,10 @@ static int unix_release(struct socket *sock)
         if (!sk)
                 return 0;
 
+        unix_release_sock(sk, 0);
         sock->sk = NULL;
 
-        return unix_release_sock(sk, 0);
+        return 0;
 }
 
 static int unix_autobind(struct socket *sock)
@@ -1413,8 +1412,8 @@ static void maybe_add_creds(struct sk_buff *skb, const struct socket *sock,
         if (UNIXCB(skb).cred)
                 return;
         if (test_bit(SOCK_PASSCRED, &sock->flags) ||
-            !other->sk_socket ||
-            test_bit(SOCK_PASSCRED, &other->sk_socket->flags)) {
+            (other->sk_socket &&
+            test_bit(SOCK_PASSCRED, &other->sk_socket->flags))) {
                 UNIXCB(skb).pid  = get_pid(task_tgid(current));
                 UNIXCB(skb).cred = get_current_cred();
         }
diff --git a/security/selinux/xfrm.c b/security/selinux/xfrm.c
index 48665ecd1197..8ab295154517 100644
--- a/security/selinux/xfrm.c
+++ b/security/selinux/xfrm.c
@@ -310,7 +310,7 @@ int selinux_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
 
         if (old_ctx) {
                 new_ctx = kmalloc(sizeof(*old_ctx) + old_ctx->ctx_len,
-                                  GFP_KERNEL);
+                                  GFP_ATOMIC);
                 if (!new_ctx)
                         return -ENOMEM;
 
diff --git a/security/yama/yama_lsm.c b/security/yama/yama_lsm.c
index 23414b93771f..13c88fbcf037 100644
--- a/security/yama/yama_lsm.c
+++ b/security/yama/yama_lsm.c
@@ -347,10 +347,8 @@ int yama_ptrace_traceme(struct task_struct *parent)
         /* Only disallow PTRACE_TRACEME on more aggressive settings. */
         switch (ptrace_scope) {
         case YAMA_SCOPE_CAPABILITY:
-                rcu_read_lock();
-                if (!ns_capable(__task_cred(parent)->user_ns, CAP_SYS_PTRACE))
+                if (!has_ns_capability(parent, current_user_ns(), CAP_SYS_PTRACE))
                         rc = -EPERM;
-                rcu_read_unlock();
                 break;
         case YAMA_SCOPE_NO_ATTACH:
                 rc = -EPERM;
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index a9ebcf9e3710..ecdf30eb5879 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -3144,7 +3144,7 @@ static unsigned int convert_to_spdif_status(unsigned short val)
         if (val & AC_DIG1_PROFESSIONAL)
                 sbits |= IEC958_AES0_PROFESSIONAL;
         if (sbits & IEC958_AES0_PROFESSIONAL) {
-                if (sbits & AC_DIG1_EMPHASIS)
+                if (val & AC_DIG1_EMPHASIS)
                         sbits |= IEC958_AES0_PRO_EMPHASIS_5015;
         } else {
                 if (val & AC_DIG1_EMPHASIS)
diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c
index 78897d05d80f..43c2ea539561 100644
--- a/sound/pci/hda/hda_generic.c
+++ b/sound/pci/hda/hda_generic.c
@@ -995,6 +995,8 @@ enum {
         BAD_NO_EXTRA_SURR_DAC = 0x101,
         /* Primary DAC shared with main surrounds */
         BAD_SHARED_SURROUND = 0x100,
+        /* No independent HP possible */
+        BAD_NO_INDEP_HP = 0x40,
         /* Primary DAC shared with main CLFE */
         BAD_SHARED_CLFE = 0x10,
         /* Primary DAC shared with extra surrounds */
@@ -1392,6 +1394,43 @@ static int check_aamix_out_path(struct hda_codec *codec, int path_idx)
         return snd_hda_get_path_idx(codec, path);
 }
 
+/* check whether the independent HP is available with the current config */
+static bool indep_hp_possible(struct hda_codec *codec)
+{
+        struct hda_gen_spec *spec = codec->spec;
+        struct auto_pin_cfg *cfg = &spec->autocfg;
+        struct nid_path *path;
+        int i, idx;
+
+        if (cfg->line_out_type == AUTO_PIN_HP_OUT)
+                idx = spec->out_paths[0];
+        else
+                idx = spec->hp_paths[0];
+        path = snd_hda_get_path_from_idx(codec, idx);
+        if (!path)
+                return false;
+
+        /* assume no path conflicts unless aamix is involved */
+        if (!spec->mixer_nid || !is_nid_contained(path, spec->mixer_nid))
+                return true;
+
+        /* check whether output paths contain aamix */
+        for (i = 0; i < cfg->line_outs; i++) {
+                if (spec->out_paths[i] == idx)
+                        break;
+                path = snd_hda_get_path_from_idx(codec, spec->out_paths[i]);
+                if (path && is_nid_contained(path, spec->mixer_nid))
+                        return false;
+        }
+        for (i = 0; i < cfg->speaker_outs; i++) {
+                path = snd_hda_get_path_from_idx(codec, spec->speaker_paths[i]);
+                if (path && is_nid_contained(path, spec->mixer_nid))
+                        return false;
+        }
+
+        return true;
+}
+
 /* fill the empty entries in the dac array for speaker/hp with the
  * shared dac pointed by the paths
  */
@@ -1545,6 +1584,9 @@ static int fill_and_eval_dacs(struct hda_codec *codec,
                 badness += BAD_MULTI_IO;
         }
 
+        if (spec->indep_hp && !indep_hp_possible(codec))
+                badness += BAD_NO_INDEP_HP;
+
         /* re-fill the shared DAC for speaker / headphone */
         if (cfg->line_out_type != AUTO_PIN_HP_OUT)
                 refill_shared_dacs(codec, cfg->hp_outs,
@@ -1758,6 +1800,10 @@ static int parse_output_paths(struct hda_codec *codec)
                                 cfg->speaker_pins, val);
         }
 
+        /* clear indep_hp flag if not available */
+        if (spec->indep_hp && !indep_hp_possible(codec))
+                spec->indep_hp = 0;
+
         kfree(best_cfg);
         return 0;
 }
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 4cea6bb6fade..418bfc0eb0a3 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -415,6 +415,8 @@ struct azx_dev {
         unsigned int opened :1;
         unsigned int running :1;
         unsigned int irq_pending :1;
+        unsigned int prepared:1;
+        unsigned int locked:1;
         /*
          * For VIA:
          *  A flag to ensure DMA position is 0
@@ -426,8 +428,25 @@ struct azx_dev {
 
         struct timecounter  azx_tc;
         struct cyclecounter azx_cc;
+
+#ifdef CONFIG_SND_HDA_DSP_LOADER
+        struct mutex dsp_mutex;
+#endif
 };
 
+/* DSP lock helpers */
+#ifdef CONFIG_SND_HDA_DSP_LOADER
+#define dsp_lock_init(dev)      mutex_init(&(dev)->dsp_mutex)
+#define dsp_lock(dev)           mutex_lock(&(dev)->dsp_mutex)
+#define dsp_unlock(dev)         mutex_unlock(&(dev)->dsp_mutex)
+#define dsp_is_locked(dev)      ((dev)->locked)
+#else
+#define dsp_lock_init(dev)      do {} while (0)
+#define dsp_lock(dev)           do {} while (0)
+#define dsp_unlock(dev)         do {} while (0)
+#define dsp_is_locked(dev)      0
+#endif
+
 /* CORB/RIRB */
 struct azx_rb {
         u32 *buf;               /* CORB/RIRB buffer
@@ -527,6 +546,10 @@ struct azx {
 
         /* card list (for power_save trigger) */
         struct list_head list;
+
+#ifdef CONFIG_SND_HDA_DSP_LOADER
+        struct azx_dev saved_azx_dev;
+#endif
 };
 
 #define CREATE_TRACE_POINTS
@@ -1793,15 +1816,25 @@ azx_assign_device(struct azx *chip, struct snd_pcm_substream *substream)
                 dev = chip->capture_index_offset;
                 nums = chip->capture_streams;
         }
-        for (i = 0; i < nums; i++, dev++)
-                if (!chip->azx_dev[dev].opened) {
-                        res = &chip->azx_dev[dev];
-                        if (res->assigned_key == key)
-                                break;
+        for (i = 0; i < nums; i++, dev++) {
+                struct azx_dev *azx_dev = &chip->azx_dev[dev];
+                dsp_lock(azx_dev);
+                if (!azx_dev->opened && !dsp_is_locked(azx_dev)) {
+                        res = azx_dev;
+                        if (res->assigned_key == key) {
+                                res->opened = 1;
+                                res->assigned_key = key;
+                                dsp_unlock(azx_dev);
+                                return azx_dev;
+                        }
                 }
+                dsp_unlock(azx_dev);
+        }
         if (res) {
+                dsp_lock(res);
                 res->opened = 1;
                 res->assigned_key = key;
+                dsp_unlock(res);
         }
         return res;
 }
@@ -2009,6 +2042,12 @@ static int azx_pcm_hw_params(struct snd_pcm_substream *substream,
         struct azx_dev *azx_dev = get_azx_dev(substream);
         int ret;
 
+        dsp_lock(azx_dev);
+        if (dsp_is_locked(azx_dev)) {
+                ret = -EBUSY;
+                goto unlock;
+        }
+
         mark_runtime_wc(chip, azx_dev, substream, false);
         azx_dev->bufsize = 0;
         azx_dev->period_bytes = 0;
@@ -2016,8 +2055,10 @@ static int azx_pcm_hw_params(struct snd_pcm_substream *substream,
         ret = snd_pcm_lib_malloc_pages(substream,
                                         params_buffer_bytes(hw_params));
         if (ret < 0)
-                return ret;
+                goto unlock;
         mark_runtime_wc(chip, azx_dev, substream, true);
+ unlock:
+        dsp_unlock(azx_dev);
         return ret;
 }
 
@@ -2029,16 +2070,21 @@ static int azx_pcm_hw_free(struct snd_pcm_substream *substream)
         struct hda_pcm_stream *hinfo = apcm->hinfo[substream->stream];
 
         /* reset BDL address */
-        azx_sd_writel(azx_dev, SD_BDLPL, 0);
-        azx_sd_writel(azx_dev, SD_BDLPU, 0);
-        azx_sd_writel(azx_dev, SD_CTL, 0);
-        azx_dev->bufsize = 0;
-        azx_dev->period_bytes = 0;
-        azx_dev->format_val = 0;
+        dsp_lock(azx_dev);
+        if (!dsp_is_locked(azx_dev)) {
+                azx_sd_writel(azx_dev, SD_BDLPL, 0);
+                azx_sd_writel(azx_dev, SD_BDLPU, 0);
+                azx_sd_writel(azx_dev, SD_CTL, 0);
+                azx_dev->bufsize = 0;
+                azx_dev->period_bytes = 0;
+                azx_dev->format_val = 0;
+        }
 
         snd_hda_codec_cleanup(apcm->codec, hinfo, substream);
 
         mark_runtime_wc(chip, azx_dev, substream, false);
+        azx_dev->prepared = 0;
+        dsp_unlock(azx_dev);
         return snd_pcm_lib_free_pages(substream);
 }
 
@@ -2055,6 +2101,12 @@ static int azx_pcm_prepare(struct snd_pcm_substream *substream)
                 snd_hda_spdif_out_of_nid(apcm->codec, hinfo->nid);
         unsigned short ctls = spdif ? spdif->ctls : 0;
 
+        dsp_lock(azx_dev);
+        if (dsp_is_locked(azx_dev)) {
+                err = -EBUSY;
+                goto unlock;
+        }
+
         azx_stream_reset(chip, azx_dev);
         format_val = snd_hda_calc_stream_format(runtime->rate,
                                                 runtime->channels,
@@ -2065,7 +2117,8 @@ static int azx_pcm_prepare(struct snd_pcm_substream *substream)
                 snd_printk(KERN_ERR SFX
                            "%s: invalid format_val, rate=%d, ch=%d, format=%d\n",
                            pci_name(chip->pci), runtime->rate, runtime->channels, runtime->format);
-                return -EINVAL;
+                err = -EINVAL;
+                goto unlock;
         }
 
         bufsize = snd_pcm_lib_buffer_bytes(substream);
@@ -2084,7 +2137,7 @@ static int azx_pcm_prepare(struct snd_pcm_substream *substream)
                 azx_dev->no_period_wakeup = runtime->no_period_wakeup;
                 err = azx_setup_periods(chip, substream, azx_dev);
                 if (err < 0)
-                        return err;
+                        goto unlock;
         }
 
         /* wallclk has 24Mhz clock source */
@@ -2101,8 +2154,14 @@ static int azx_pcm_prepare(struct snd_pcm_substream *substream)
         if ((chip->driver_caps & AZX_DCAPS_CTX_WORKAROUND) &&
             stream_tag > chip->capture_streams)
                 stream_tag -= chip->capture_streams;
-        return snd_hda_codec_prepare(apcm->codec, hinfo, stream_tag,
+        err = snd_hda_codec_prepare(apcm->codec, hinfo, stream_tag,
                                      azx_dev->format_val, substream);
+
+ unlock:
+        if (!err)
+                azx_dev->prepared = 1;
+        dsp_unlock(azx_dev);
+        return err;
 }
 
 static int azx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
@@ -2117,6 +2176,9 @@ static int azx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
         azx_dev = get_azx_dev(substream);
         trace_azx_pcm_trigger(chip, azx_dev, cmd);
 
+        if (dsp_is_locked(azx_dev) || !azx_dev->prepared)
+                return -EPIPE;
+
         switch (cmd) {
         case SNDRV_PCM_TRIGGER_START:
                 rstart = 1;
@@ -2621,17 +2683,27 @@ static int azx_load_dsp_prepare(struct hda_bus *bus, unsigned int format,
         struct azx_dev *azx_dev;
         int err;
 
-        if (snd_hda_lock_devices(bus))
-                return -EBUSY;
+        azx_dev = azx_get_dsp_loader_dev(chip);
+
+        dsp_lock(azx_dev);
+        spin_lock_irq(&chip->reg_lock);
+        if (azx_dev->running || azx_dev->locked) {
+                spin_unlock_irq(&chip->reg_lock);
+                err = -EBUSY;
+                goto unlock;
+        }
+        azx_dev->prepared = 0;
+        chip->saved_azx_dev = *azx_dev;
+        azx_dev->locked = 1;
+        spin_unlock_irq(&chip->reg_lock);
 
         err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV_SG,
                                   snd_dma_pci_data(chip->pci),
                                   byte_size, bufp);
         if (err < 0)
-                goto unlock;
+                goto err_alloc;
 
         mark_pages_wc(chip, bufp, true);
-        azx_dev = azx_get_dsp_loader_dev(chip);
         azx_dev->bufsize = byte_size;
         azx_dev->period_bytes = byte_size;
         azx_dev->format_val = format;
@@ -2649,13 +2721,20 @@ static int azx_load_dsp_prepare(struct hda_bus *bus, unsigned int format,
                 goto error;
 
         azx_setup_controller(chip, azx_dev);
+        dsp_unlock(azx_dev);
         return azx_dev->stream_tag;
 
  error:
         mark_pages_wc(chip, bufp, false);
         snd_dma_free_pages(bufp);
-unlock:
-        snd_hda_unlock_devices(bus);
+ err_alloc:
+        spin_lock_irq(&chip->reg_lock);
+        if (azx_dev->opened)
+                *azx_dev = chip->saved_azx_dev;
+        azx_dev->locked = 0;
+        spin_unlock_irq(&chip->reg_lock);
+ unlock:
+        dsp_unlock(azx_dev);
         return err;
 }
 
@@ -2677,9 +2756,10 @@ static void azx_load_dsp_cleanup(struct hda_bus *bus,
         struct azx *chip = bus->private_data;
         struct azx_dev *azx_dev = azx_get_dsp_loader_dev(chip);
 
-        if (!dmab->area)
+        if (!dmab->area || !azx_dev->locked)
                 return;
 
+        dsp_lock(azx_dev);
         /* reset BDL address */
         azx_sd_writel(azx_dev, SD_BDLPL, 0);
         azx_sd_writel(azx_dev, SD_BDLPU, 0);
@@ -2692,7 +2772,12 @@ static void azx_load_dsp_cleanup(struct hda_bus *bus,
         snd_dma_free_pages(dmab);
         dmab->area = NULL;
 
-        snd_hda_unlock_devices(bus);
+        spin_lock_irq(&chip->reg_lock);
+        if (azx_dev->opened)
+                *azx_dev = chip->saved_azx_dev;
+        azx_dev->locked = 0;
+        spin_unlock_irq(&chip->reg_lock);
+        dsp_unlock(azx_dev);
 }
 #endif /* CONFIG_SND_HDA_DSP_LOADER */
 
@@ -3481,6 +3566,7 @@ static int azx_first_init(struct azx *chip)
         }
 
         for (i = 0; i < chip->num_streams; i++) {
+                dsp_lock_init(&chip->azx_dev[i]);
                 /* allocate memory for the BDL for each stream */
                 err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
                                           snd_dma_pci_data(chip->pci),
diff --git a/sound/pci/hda/patch_cirrus.c b/sound/pci/hda/patch_cirrus.c
index 60d08f669f0c..0d9c58f13560 100644
--- a/sound/pci/hda/patch_cirrus.c
+++ b/sound/pci/hda/patch_cirrus.c
@@ -168,10 +168,10 @@ static void cs_automute(struct hda_codec *codec)
         snd_hda_gen_update_outputs(codec);
 
         if (spec->gpio_eapd_hp) {
-                unsigned int gpio = spec->gen.hp_jack_present ?
+                spec->gpio_data = spec->gen.hp_jack_present ?
                         spec->gpio_eapd_hp : spec->gpio_eapd_speaker;
                 snd_hda_codec_write(codec, 0x01, 0,
-                                    AC_VERB_SET_GPIO_DATA, gpio);
+                                    AC_VERB_SET_GPIO_DATA, spec->gpio_data);
         }
 }
 
diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c
index 941bf6c766ec..2a89d1eefeb6 100644
--- a/sound/pci/hda/patch_conexant.c
+++ b/sound/pci/hda/patch_conexant.c
@@ -1142,7 +1142,7 @@ static int patch_cxt5045(struct hda_codec *codec)
         }
 
         if (spec->beep_amp)
-                snd_hda_attach_beep_device(codec, spec->beep_amp);
+                snd_hda_attach_beep_device(codec, get_amp_nid_(spec->beep_amp));
 
         return 0;
 }
@@ -1921,7 +1921,7 @@ static int patch_cxt5051(struct hda_codec *codec)
         }
 
         if (spec->beep_amp)
-                snd_hda_attach_beep_device(codec, spec->beep_amp);
+                snd_hda_attach_beep_device(codec, get_amp_nid_(spec->beep_amp));
 
         return 0;
 }
@@ -3099,7 +3099,7 @@ static int patch_cxt5066(struct hda_codec *codec)
         }
 
         if (spec->beep_amp)
-                snd_hda_attach_beep_device(codec, spec->beep_amp);
+                snd_hda_attach_beep_device(codec, get_amp_nid_(spec->beep_amp));
 
         return 0;
 }
@@ -3191,11 +3191,17 @@ static int cx_auto_build_controls(struct hda_codec *codec)
         return 0;
 }
 
+static void cx_auto_free(struct hda_codec *codec)
+{
+        snd_hda_detach_beep_device(codec);
+        snd_hda_gen_free(codec);
+}
+
 static const struct hda_codec_ops cx_auto_patch_ops = {
         .build_controls = cx_auto_build_controls,
         .build_pcms = snd_hda_gen_build_pcms,
         .init = snd_hda_gen_init,
-        .free = snd_hda_gen_free,
+        .free = cx_auto_free,
         .unsol_event = snd_hda_jack_unsol_event,
 #ifdef CONFIG_PM
         .check_power_status = snd_hda_gen_check_power_status,
@@ -3391,7 +3397,7 @@ static int patch_conexant_auto(struct hda_codec *codec)
 
         codec->patch_ops = cx_auto_patch_ops;
         if (spec->beep_amp)
-                snd_hda_attach_beep_device(codec, spec->beep_amp);
+                snd_hda_attach_beep_device(codec, get_amp_nid_(spec->beep_amp));
 
         /* Some laptops with Conexant chips show stalls in S3 resume,
          * which falls into the single-cmd mode.
diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index 638e7f738018..ca4739c3f650 100644
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -715,8 +715,9 @@ static int check_input_term(struct mixer_build *state, int id, struct usb_audio_
                 case UAC2_CLOCK_SELECTOR: {
                         struct uac_selector_unit_descriptor *d = p1;
                         /* call recursively to retrieve the channel info */
-                        if (check_input_term(state, d->baSourceID[0], term) < 0)
-                                return -ENODEV;
+                        err = check_input_term(state, d->baSourceID[0], term);
+                        if (err < 0)
+                                return err;
                         term->type = d->bDescriptorSubtype << 16; /* virtual type */
                         term->id = id;
                         term->name = uac_selector_unit_iSelector(d);
@@ -725,7 +726,8 @@ static int check_input_term(struct mixer_build *state, int id, struct usb_audio_
                 case UAC1_PROCESSING_UNIT:
                 case UAC1_EXTENSION_UNIT:
                 /* UAC2_PROCESSING_UNIT_V2 */
-                /* UAC2_EFFECT_UNIT */ {
+                /* UAC2_EFFECT_UNIT */
+                case UAC2_EXTENSION_UNIT_V2: {
                         struct uac_processing_unit_descriptor *d = p1;
 
                         if (state->mixer->protocol == UAC_VERSION_2 &&
@@ -1356,8 +1358,9 @@ static int parse_audio_feature_unit(struct mixer_build *state, int unitid, void
                 return err;
 
         /* determine the input source type and name */
-        if (check_input_term(state, hdr->bSourceID, &iterm) < 0)
-                return -EINVAL;
+        err = check_input_term(state, hdr->bSourceID, &iterm);
+        if (err < 0)
+                return err;
 
         master_bits = snd_usb_combine_bytes(bmaControls, csize);
         /* master configuration quirks */
@@ -2052,6 +2055,8 @@ static int parse_audio_unit(struct mixer_build *state, int unitid)
                         return parse_audio_extension_unit(state, unitid, p1);
                 else /* UAC_VERSION_2 */
                         return parse_audio_processing_unit(state, unitid, p1);
+        case UAC2_EXTENSION_UNIT_V2:
+                return parse_audio_extension_unit(state, unitid, p1);
         default:
                 snd_printk(KERN_ERR "usbaudio: unit %u: unexpected type 0x%02x\n", unitid, p1[2]);
                 return -EINVAL;
@@ -2118,7 +2123,7 @@ static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer)
                         state.oterm.type = le16_to_cpu(desc->wTerminalType);
                         state.oterm.name = desc->iTerminal;
                         err = parse_audio_unit(&state, desc->bSourceID);
-                        if (err < 0)
+                        if (err < 0 && err != -EINVAL)
                                 return err;
                 } else { /* UAC_VERSION_2 */
                         struct uac2_output_terminal_descriptor *desc = p;
@@ -2130,12 +2135,12 @@ static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer)
                         state.oterm.type = le16_to_cpu(desc->wTerminalType);
                         state.oterm.name = desc->iTerminal;
                         err = parse_audio_unit(&state, desc->bSourceID);
-                        if (err < 0)
+                        if (err < 0 && err != -EINVAL)
                                 return err;
 
                         /* for UAC2, use the same approach to also add the clock selectors */
                         err = parse_audio_unit(&state, desc->bCSourceID);
-                        if (err < 0)
+                        if (err < 0 && err != -EINVAL)
                                 return err;
                 }
         }
diff --git a/tools/lib/traceevent/Makefile b/tools/lib/traceevent/Makefile
index a20e32033431..0b0a90787db6 100644
--- a/tools/lib/traceevent/Makefile
+++ b/tools/lib/traceevent/Makefile
@@ -122,7 +122,7 @@ export Q VERBOSE
 
 EVENT_PARSE_VERSION = $(EP_VERSION).$(EP_PATCHLEVEL).$(EP_EXTRAVERSION)
 
-INCLUDES = -I. -I/usr/local/include $(CONFIG_INCLUDES)
+INCLUDES = -I. $(CONFIG_INCLUDES)
 
 # Set compile option CFLAGS if not set elsewhere
 CFLAGS ?= -g -Wall
diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index a2108ca1cc17..bb74c79cd16e 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -95,7 +95,7 @@ ifeq ("$(origin DEBUG)", "command line")
   PERF_DEBUG = $(DEBUG)
 endif
 ifndef PERF_DEBUG
-  CFLAGS_OPTIMIZE = -O6 -D_FORTIFY_SOURCE=2
+  CFLAGS_OPTIMIZE = -O6
 endif
 
 ifdef PARSER_DEBUG
@@ -180,6 +180,12 @@ ifeq ($(call try-cc,$(SOURCE_HELLO),$(CFLAGS) -Werror -Wvolatile-register-var,-W
        CFLAGS := $(CFLAGS) -Wvolatile-register-var
 endif
 
+ifndef PERF_DEBUG
+        ifeq ($(call try-cc,$(SOURCE_HELLO),$(CFLAGS) -D_FORTIFY_SOURCE=2,-D_FORTIFY_SOURCE=2),y)
+                CFLAGS := $(CFLAGS) -D_FORTIFY_SOURCE=2
+        endif
+endif
+
 ### --- END CONFIGURATION SECTION ---
 
 ifeq ($(srctree),)
diff --git a/tools/perf/bench/bench.h b/tools/perf/bench/bench.h
index a5223e6a7b43..0fdc85269c4d 100644
--- a/tools/perf/bench/bench.h
+++ b/tools/perf/bench/bench.h
@@ -1,6 +1,30 @@
 #ifndef BENCH_H
 #define BENCH_H
 
+/*
+ * The madvise transparent hugepage constants were added in glibc
+ * 2.13. For compatibility with older versions of glibc, define these
+ * tokens if they are not already defined.
+ *
+ * PA-RISC uses different madvise values from other architectures and
+ * needs to be special-cased.
+ */
+#ifdef __hppa__
+# ifndef MADV_HUGEPAGE
+#  define MADV_HUGEPAGE         67
+# endif
+# ifndef MADV_NOHUGEPAGE
+#  define MADV_NOHUGEPAGE       68
+# endif
+#else
+# ifndef MADV_HUGEPAGE
+#  define MADV_HUGEPAGE         14
+# endif
+# ifndef MADV_NOHUGEPAGE
+#  define MADV_NOHUGEPAGE       15
+# endif
+#endif
+
 extern int bench_numa(int argc, const char **argv, const char *prefix);
 extern int bench_sched_messaging(int argc, const char **argv, const char *prefix);
 extern int bench_sched_pipe(int argc, const char **argv, const char *prefix);
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 774c90713a53..f1a939ebc19c 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -573,13 +573,15 @@ static int __cmd_record(struct perf_record *rec, int argc, const char **argv)
                                          perf_event__synthesize_guest_os, tool);
         }
 
-        if (!opts->target.system_wide)
+        if (perf_target__has_task(&opts->target))
                 err = perf_event__synthesize_thread_map(tool, evsel_list->threads,
                                                   process_synthesized_event,
                                                   machine);
-        else
+        else if (perf_target__has_cpu(&opts->target))
                 err = perf_event__synthesize_threads(tool, process_synthesized_event,
                                                machine);
+        else /* command specified */
+                err = 0;
 
         if (err != 0)
                 goto out_delete_session;
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index 38624686ee9a..226a4ae2f936 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -208,8 +208,9 @@ static inline int script_browse(const char *script_opt __maybe_unused)
         return 0;
 }
 
-#define K_LEFT -1
-#define K_RIGHT -2
+#define K_LEFT  -1000
+#define K_RIGHT -2000
+#define K_SWITCH_INPUT_DATA -3000
 #endif
 
 #ifdef GTK2_SUPPORT
diff --git a/tools/perf/util/strlist.c b/tools/perf/util/strlist.c
index 55433aa42c8f..eabdce0a2daa 100644
--- a/tools/perf/util/strlist.c
+++ b/tools/perf/util/strlist.c
@@ -143,7 +143,7 @@ struct strlist *strlist__new(bool dupstr, const char *list)
                 slist->rblist.node_delete = strlist__node_delete;
 
                 slist->dupstr    = dupstr;
-                if (slist && strlist__parse_list(slist, list) != 0)
+                if (list && strlist__parse_list(slist, list) != 0)
                         goto out_error;
         }
 
diff --git a/virt/kvm/ioapic.c b/virt/kvm/ioapic.c
index ce82b9401958..5ba005c00e2f 100644
--- a/virt/kvm/ioapic.c
+++ b/virt/kvm/ioapic.c
@@ -74,9 +74,12 @@ static unsigned long ioapic_read_indirect(struct kvm_ioapic *ioapic,
                         u32 redir_index = (ioapic->ioregsel - 0x10) >> 1;
                         u64 redir_content;
 
-                        ASSERT(redir_index < IOAPIC_NUM_PINS);
+                        if (redir_index < IOAPIC_NUM_PINS)
+                                redir_content =
+                                        ioapic->redirtbl[redir_index].bits;
+                        else
+                                redir_content = ~0ULL;
 
-                        redir_content = ioapic->redirtbl[redir_index].bits;
                         result = (ioapic->ioregsel & 0x1) ?
                             (redir_content >> 32) & 0xffffffff :
                             redir_content & 0xffffffff;