71 files changed, 581 insertions, 326 deletions
diff --git a/Documentation/filesystems/ext4.txt b/Documentation/filesystems/ext4.txt
index bf4f4b7e11b3..6d94e0696f8c 100644
--- a/Documentation/filesystems/ext4.txt
+++ b/Documentation/filesystems/ext4.txt
@@ -134,9 +134,15 @@ ro                   	Mount filesystem read only. Note that ext4 will
                        mount options "ro,noload" can be used to prevent
                        writes to the filesystem.
+journal_checksum        Enable checksumming of the journal transactions.
+                        This will allow the recovery code in e2fsck and the
+                        kernel to detect corruption in the kernel.  It is a
+                        compatible change and will be ignored by older kernels.
 journal_async_commit    Commit block can be written to disk without waiting
                        for descriptor blocks. If enabled older kernels cannot
-                        mount the device.
+                        mount the device. This will enable 'journal_checksum'
+                        internally.
 journal=update          Update the ext4 file system's journal to the current
                        format.
diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt
index 1c8eb4518ce0..fd9a2f67edf2 100644
--- a/Documentation/sound/alsa/ALSA-Configuration.txt
+++ b/Documentation/sound/alsa/ALSA-Configuration.txt
@@ -522,7 +522,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
    pcm_devs       - Number of PCM devices assigned to each card
                     (default = 1, up to 4)
    pcm_substreams - Number of PCM substreams assigned to each PCM
-                     (default = 8, up to 16)
+                     (default = 8, up to 128)
    hrtimer        - Use hrtimer (=1, default) or system timer (=0)
    fake_buffer    - Fake buffer allocations (default = 1)
diff --git a/Documentation/trace/ftrace.txt b/Documentation/trace/ftrace.txt
index 957b22fde2df..8179692fbb90 100644
--- a/Documentation/trace/ftrace.txt
+++ b/Documentation/trace/ftrace.txt
@@ -1231,6 +1231,7 @@ something like this simple program:
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <unistd.h>
+#include <string.h>
 #define _STR(x) #x
 #define STR(x) _STR(x)
@@ -1265,6 +1266,7 @@ const char *find_debugfs(void)
               return NULL;
       }
+       strcat(debugfs, "/tracing/");
       debugfs_found = 1;
       return debugfs;
diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h
index fd03fb63a332..3d0cdd21b882 100644
--- a/arch/arm/include/asm/cacheflush.h
+++ b/arch/arm/include/asm/cacheflush.h
@@ -414,9 +414,14 @@ extern void __flush_dcache_page(struct address_space *mapping, struct page *page
 static inline void __flush_icache_all(void)
 {
+#ifdef CONFIG_ARM_ERRATA_411920
+        extern void v6_icache_inval_all(void);
+        v6_icache_inval_all();
+#else
        asm("mcr        p15, 0, %0, c7, c5, 0   @ invalidate I-cache\n"
            :
            : "r" (0));
+#endif
 }
 #define ARCH_HAS_FLUSH_ANON_PAGE
diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
index 1423a3419789..2a573d4fea24 100644
--- a/arch/arm/kernel/signal.c
+++ b/arch/arm/kernel/signal.c
@@ -1,7 +1,7 @@
 /*
 *  linux/arch/arm/kernel/signal.c
 *
- *  Copyright (C) 1995-2002 Russell King
+ *  Copyright (C) 1995-2009 Russell King
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
@@ -29,6 +29,7 @@
 */
 #define SWI_SYS_SIGRETURN       (0xef000000|(__NR_sigreturn)|(__NR_OABI_SYSCALL_BASE))
 #define SWI_SYS_RT_SIGRETURN    (0xef000000|(__NR_rt_sigreturn)|(__NR_OABI_SYSCALL_BASE))
+#define SWI_SYS_RESTART         (0xef000000|__NR_restart_syscall|__NR_OABI_SYSCALL_BASE)
 /*
 * With EABI, the syscall number has to be loaded into r7.
@@ -49,6 +50,18 @@ const unsigned long sigreturn_codes[7] = {
 };
 /*
+ * Either we support OABI only, or we have EABI with the OABI
+ * compat layer enabled.  In the later case we don't know if
+ * user space is EABI or not, and if not we must not clobber r7.
+ * Always using the OABI syscall solves that issue and works for
+ * all those cases.
+ */
+const unsigned long syscall_restart_code[2] = {
+        SWI_SYS_RESTART,        /* swi  __NR_restart_syscall */
+        0xe49df004,             /* ldr  pc, [sp], #4 */
+};
+/*
 * atomically swap in the new signal mask, and wait for a signal.
 */
 asmlinkage int sys_sigsuspend(int restart, unsigned long oldmask, old_sigset_t mask)
@@ -645,32 +658,12 @@ static void do_signal(struct pt_regs *regs, int syscall)
                                regs->ARM_pc -= 4;
 #else
                                u32 __user *usp;
-                                u32 swival = __NR_restart_syscall;
-                                regs->ARM_sp -= 12;
+                                regs->ARM_sp -= 4;
                                usp = (u32 __user *)regs->ARM_sp;
-                                /*
+                                put_user(regs->ARM_pc, usp);
-                                 * Either we supports OABI only, or we have
+                                regs->ARM_pc = KERN_RESTART_CODE;
-                                 * EABI with the OABI compat layer enabled.
-                                 * In the later case we don't know if user
-                                 * space is EABI or not, and if not we must
-                                 * not clobber r7.  Always using the OABI
-                                 * syscall solves that issue and works for
-                                 * all those cases.
-                                 */
-                                swival = swival - __NR_SYSCALL_BASE + __NR_OABI_SYSCALL_BASE;
-                                put_user(regs->ARM_pc, &usp[0]);
-                                /* swi __NR_restart_syscall */
-                                put_user(0xef000000 | swival, &usp[1]);
-                                /* ldr  pc, [sp], #12 */
-                                put_user(0xe49df00c, &usp[2]);
-                                flush_icache_range((unsigned long)usp,
-                                                   (unsigned long)(usp + 3));
-                                regs->ARM_pc = regs->ARM_sp + 4;
 #endif
                        }
                }
diff --git a/arch/arm/kernel/signal.h b/arch/arm/kernel/signal.h
index 27beece15502..6fcfe8398aa4 100644
--- a/arch/arm/kernel/signal.h
+++ b/arch/arm/kernel/signal.h
@@ -1,12 +1,14 @@
 /*
 *  linux/arch/arm/kernel/signal.h
 *
- *  Copyright (C) 2005 Russell King.
+ *  Copyright (C) 2005-2009 Russell King.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
 #define KERN_SIGRETURN_CODE     (CONFIG_VECTORS_BASE + 0x00000500)
+#define KERN_RESTART_CODE       (KERN_SIGRETURN_CODE + sizeof(sigreturn_codes))
 extern const unsigned long sigreturn_codes[7];
+extern const unsigned long syscall_restart_code[2];
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index f838f36eb702..95718a6b50a6 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -1,7 +1,7 @@
 /*
 *  linux/arch/arm/kernel/traps.c
 *
- *  Copyright (C) 1995-2002 Russell King
+ *  Copyright (C) 1995-2009 Russell King
 *  Fragments that appear the same as linux/arch/i386/kernel/traps.c (C) Linus Torvalds
 *
 * This program is free software; you can redistribute it and/or modify
@@ -751,6 +751,8 @@ void __init early_trap_init(void)
         */
        memcpy((void *)KERN_SIGRETURN_CODE, sigreturn_codes,
               sizeof(sigreturn_codes));
+        memcpy((void *)KERN_RESTART_CODE, syscall_restart_code,
+               sizeof(syscall_restart_code));
        flush_icache_range(vectors, vectors + PAGE_SIZE);
        modify_domain(DOMAIN_USER, DOMAIN_CLIENT);
diff --git a/arch/arm/kernel/unwind.c b/arch/arm/kernel/unwind.c
index 39baf1128bfa..786ac2b6914a 100644
--- a/arch/arm/kernel/unwind.c
+++ b/arch/arm/kernel/unwind.c
@@ -26,6 +26,15 @@
 * http://infocenter.arm.com/help/topic/com.arm.doc.subset.swdev.abi/index.html
 */
+#if !defined (__ARM_EABI__)
+#warning Your compiler does not have EABI support.
+#warning    ARM unwind is known to compile only with EABI compilers.
+#warning    Change compiler or disable ARM_UNWIND option.
+#elif (__GNUC__ == 4 && __GNUC_MINOR__ <= 2)
+#warning Your compiler is too buggy; it is known to not compile ARM unwind support.
+#warning    Change compiler or disable ARM_UNWIND option.
+#endif
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/module.h>
diff --git a/arch/arm/mach-integrator/include/mach/memory.h b/arch/arm/mach-integrator/include/mach/memory.h
index 2b2e7a110724..4891828454f5 100644
--- a/arch/arm/mach-integrator/include/mach/memory.h
+++ b/arch/arm/mach-integrator/include/mach/memory.h
@@ -28,5 +28,6 @@
 #define BUS_OFFSET      UL(0x80000000)
 #define __virt_to_bus(x)        ((x) - PAGE_OFFSET + BUS_OFFSET)
 #define __bus_to_virt(x)        ((x) - BUS_OFFSET + PAGE_OFFSET)
+#define __pfn_to_bus(x)         (((x) << PAGE_SHIFT) + BUS_OFFSET)
 #endif
diff --git a/arch/arm/mach-realview/core.h b/arch/arm/mach-realview/core.h
index 46cd6acb4d40..699671fa6e0b 100644
--- a/arch/arm/mach-realview/core.h
+++ b/arch/arm/mach-realview/core.h
@@ -61,5 +61,5 @@ extern void realview_timer_init(unsigned int timer_irq);
 extern int realview_flash_register(struct resource *res, u32 num);
 extern int realview_eth_register(const char *name, struct resource *res);
 extern int realview_usb_register(struct resource *res);
+extern void (*realview_reset)(char);
 #endif
diff --git a/arch/arm/mach-realview/include/mach/board-pb1176.h b/arch/arm/mach-realview/include/mach/board-pb1176.h
index 98f8e7eeacc2..34b80b7d40b8 100644
--- a/arch/arm/mach-realview/include/mach/board-pb1176.h
+++ b/arch/arm/mach-realview/include/mach/board-pb1176.h
@@ -73,4 +73,9 @@
 #define REALVIEW_PB1176_GIC_DIST_BASE           0x10041000 /* GIC distributor, on FPGA */
 #define REALVIEW_PB1176_L220_BASE               0x10110000 /* L220 registers */
+/*
+ * Control register SYS_RESETCTL is set to 1 to force a soft reset
+ */
+#define REALVIEW_PB1176_SYS_LOCKVAL_RSTCTL    0x0100
 #endif  /* __ASM_ARCH_BOARD_PB1176_H */
diff --git a/arch/arm/mach-realview/include/mach/board-pb11mp.h b/arch/arm/mach-realview/include/mach/board-pb11mp.h
index f0d68e0fea01..7abf918b77e9 100644
--- a/arch/arm/mach-realview/include/mach/board-pb11mp.h
+++ b/arch/arm/mach-realview/include/mach/board-pb11mp.h
@@ -81,4 +81,16 @@
 #define REALVIEW_TC11MP_GIC_DIST_BASE           0x1F001000      /* Test chip interrupt controller distributor */
 #define REALVIEW_TC11MP_L220_BASE               0x1F002000      /* L220 registers */
+ /*
+ * Values for REALVIEW_SYS_RESET_CTRL
+ */
+#define REALVIEW_PB11MP_SYS_CTRL_RESET_CONFIGCLR    0x01
+#define REALVIEW_PB11MP_SYS_CTRL_RESET_CONFIGINIT   0x02
+#define REALVIEW_PB11MP_SYS_CTRL_RESET_DLLRESET     0x03
+#define REALVIEW_PB11MP_SYS_CTRL_RESET_PLLRESET     0x04
+#define REALVIEW_PB11MP_SYS_CTRL_RESET_POR          0x05
+#define REALVIEW_PB11MP_SYS_CTRL_RESET_DoC          0x06
+#define REALVIEW_PB11MP_SYS_CTRL_LED         (1 << 0)
 #endif  /* __ASM_ARCH_BOARD_PB11MP_H */
diff --git a/arch/arm/mach-realview/include/mach/platform.h b/arch/arm/mach-realview/include/mach/platform.h
index c8f50835fed2..4f46bf71e752 100644
--- a/arch/arm/mach-realview/include/mach/platform.h
+++ b/arch/arm/mach-realview/include/mach/platform.h
@@ -119,19 +119,6 @@
 #define REALVIEW_SYS_TEST_OSC3               (REALVIEW_SYS_BASE + REALVIEW_SYS_TEST_OSC3_OFFSET)
 #define REALVIEW_SYS_TEST_OSC4               (REALVIEW_SYS_BASE + REALVIEW_SYS_TEST_OSC4_OFFSET)
-/* 
- * Values for REALVIEW_SYS_RESET_CTRL
- */
-#define REALVIEW_SYS_CTRL_RESET_CONFIGCLR    0x01
-#define REALVIEW_SYS_CTRL_RESET_CONFIGINIT   0x02
-#define REALVIEW_SYS_CTRL_RESET_DLLRESET     0x03
-#define REALVIEW_SYS_CTRL_RESET_PLLRESET     0x04
-#define REALVIEW_SYS_CTRL_RESET_POR          0x05
-#define REALVIEW_SYS_CTRL_RESET_DoC          0x06
-#define REALVIEW_SYS_CTRL_LED         (1 << 0)
 /* ------------------------------------------------------------------------
 *  RealView control registers
 * ------------------------------------------------------------------------
@@ -153,7 +140,7 @@
 *     SYS_CLD, SYS_BOOTCS
 */
 #define REALVIEW_SYS_LOCK_LOCKED    (1 << 16)
-#define REALVIEW_SYS_LOCKVAL_MASK       0xFFFF          /* write 0xA05F to enable write access */
+#define REALVIEW_SYS_LOCKVAL_MASK       0xA05F         /* Enable write access */
 /*
 * REALVIEW_SYS_FLASH
diff --git a/arch/arm/mach-realview/include/mach/system.h b/arch/arm/mach-realview/include/mach/system.h
index 1a15a441e027..a30f2e3ec178 100644
--- a/arch/arm/mach-realview/include/mach/system.h
+++ b/arch/arm/mach-realview/include/mach/system.h
@@ -25,6 +25,8 @@
 #include <mach/hardware.h>
 #include <mach/platform.h>
+void (*realview_reset)(char mode);
 static inline void arch_idle(void)
 {
        /*
@@ -36,16 +38,12 @@ static inline void arch_idle(void)
 static inline void arch_reset(char mode, const char *cmd)
 {
-        void __iomem *hdr_ctrl = __io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_RESETCTL_OFFSET;
-        unsigned int val;
        /*
         * To reset, we hit the on-board reset register
         * in the system FPGA
         */
-        val = __raw_readl(hdr_ctrl);
+        if (realview_reset)
-        val |= REALVIEW_SYS_CTRL_RESET_CONFIGCLR;
+                realview_reset(mode);
-        __raw_writel(val, hdr_ctrl);
 }
 #endif
diff --git a/arch/arm/mach-realview/realview_pb1176.c b/arch/arm/mach-realview/realview_pb1176.c
index 2817fe099319..a6ba147692c1 100644
--- a/arch/arm/mach-realview/realview_pb1176.c
+++ b/arch/arm/mach-realview/realview_pb1176.c
@@ -290,6 +290,16 @@ static struct sys_timer realview_pb1176_timer = {
        .init           = realview_pb1176_timer_init,
 };
+static void realview_pb1176_reset(char mode)
+{
+        void __iomem *hdr_ctrl = __io_address(REALVIEW_SYS_BASE) +
+                REALVIEW_SYS_RESETCTL_OFFSET;
+        void __iomem *rst_hdr_ctrl = __io_address(REALVIEW_SYS_BASE) +
+                REALVIEW_SYS_LOCK_OFFSET;
+        __raw_writel(REALVIEW_SYS_LOCKVAL_MASK, rst_hdr_ctrl);
+        __raw_writel(REALVIEW_PB1176_SYS_LOCKVAL_RSTCTL, hdr_ctrl);
+}
 static void __init realview_pb1176_init(void)
 {
        int i;
@@ -313,6 +323,7 @@ static void __init realview_pb1176_init(void)
 #ifdef CONFIG_LEDS
        leds_event = realview_leds_event;
 #endif
+        realview_reset = realview_pb1176_reset;
 }
 MACHINE_START(REALVIEW_PB1176, "ARM-RealView PB1176")
diff --git a/arch/arm/mach-realview/realview_pb11mp.c b/arch/arm/mach-realview/realview_pb11mp.c
index 94680fcf726d..070d284ce96e 100644
--- a/arch/arm/mach-realview/realview_pb11mp.c
+++ b/arch/arm/mach-realview/realview_pb11mp.c
@@ -299,6 +299,21 @@ static struct sys_timer realview_pb11mp_timer = {
        .init           = realview_pb11mp_timer_init,
 };
+static void realview_pb11mp_reset(char mode)
+{
+        void __iomem *hdr_ctrl = __io_address(REALVIEW_SYS_BASE) +
+                REALVIEW_SYS_RESETCTL_OFFSET;
+        unsigned int val;
+        /*
+         * To reset, we hit the on-board reset register
+         * in the system FPGA
+         */
+        val = __raw_readl(hdr_ctrl);
+        val |= REALVIEW_PB11MP_SYS_CTRL_RESET_CONFIGCLR;
+        __raw_writel(val, hdr_ctrl);
+}
 static void __init realview_pb11mp_init(void)
 {
        int i;
@@ -324,6 +339,7 @@ static void __init realview_pb11mp_init(void)
 #ifdef CONFIG_LEDS
        leds_event = realview_leds_event;
 #endif
+        realview_reset = realview_pb11mp_reset;
 }
 MACHINE_START(REALVIEW_PB11MP, "ARM-RealView PB11MPCore")
diff --git a/arch/arm/mm/context.c b/arch/arm/mm/context.c
index 6bda76a43199..a9e22e31eaa1 100644
--- a/arch/arm/mm/context.c
+++ b/arch/arm/mm/context.c
@@ -50,10 +50,7 @@ void __new_context(struct mm_struct *mm)
                isb();
                flush_tlb_all();
                if (icache_is_vivt_asid_tagged()) {
-                        asm("mcr        p15, 0, %0, c7, c5, 0   @ invalidate I-cache\n"
+                        __flush_icache_all();
-                            "mcr        p15, 0, %0, c7, c5, 6   @ flush BTAC/BTB\n"
-                            :
-                            : "r" (0));
                        dsb();
                }
        }
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index b30925fcbcdc..b9590a7085ca 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -205,7 +205,7 @@ __dma_alloc(struct device *dev, size_t size, dma_addr_t *handle, gfp_t gfp,
        order = get_order(size);
-        if (mask != 0xffffffff)
+        if (mask < 0xffffffffULL)
                gfp |= GFP_DMA;
        page = alloc_pages(gfp, order);
@@ -289,7 +289,7 @@ __dma_alloc(struct device *dev, size_t size, dma_addr_t *handle, gfp_t gfp,
        if (!mask)
                goto error;
-        if (mask != 0xffffffff)
+        if (mask < 0xffffffffULL)
                gfp |= GFP_DMA;
        virt = kmalloc(size, gfp);
        if (!virt)
diff --git a/arch/arm/mm/flush.c b/arch/arm/mm/flush.c
index b27942909b23..7f294f307c83 100644
--- a/arch/arm/mm/flush.c
+++ b/arch/arm/mm/flush.c
@@ -18,10 +18,6 @@
 #include "mm.h"
-#ifdef CONFIG_ARM_ERRATA_411920
-extern void v6_icache_inval_all(void);
-#endif
 #ifdef CONFIG_CPU_CACHE_VIPT
 #define ALIAS_FLUSH_START       0xffff4000
@@ -35,16 +31,11 @@ static void flush_pfn_alias(unsigned long pfn, unsigned long vaddr)
        flush_tlb_kernel_page(to);
        asm(    "mcrr   p15, 0, %1, %0, c14\n"
-        "       mcr     p15, 0, %2, c7, c10, 4\n"
+        "       mcr     p15, 0, %2, c7, c10, 4"
-#ifndef CONFIG_ARM_ERRATA_411920
-        "       mcr     p15, 0, %2, c7, c5, 0\n"
-#endif
            :
            : "r" (to), "r" (to + PAGE_SIZE - L1_CACHE_BYTES), "r" (zero)
            : "cc");
-#ifdef CONFIG_ARM_ERRATA_411920
+        __flush_icache_all();
-        v6_icache_inval_all();
-#endif
 }
 void flush_cache_mm(struct mm_struct *mm)
@@ -57,16 +48,11 @@ void flush_cache_mm(struct mm_struct *mm)
        if (cache_is_vipt_aliasing()) {
                asm(    "mcr    p15, 0, %0, c7, c14, 0\n"
-                "       mcr     p15, 0, %0, c7, c10, 4\n"
+                "       mcr     p15, 0, %0, c7, c10, 4"
-#ifndef CONFIG_ARM_ERRATA_411920
-                "       mcr     p15, 0, %0, c7, c5, 0\n"
-#endif
                    :
                    : "r" (0)
                    : "cc");
-#ifdef CONFIG_ARM_ERRATA_411920
+                __flush_icache_all();
-                v6_icache_inval_all();
-#endif
        }
 }
@@ -81,16 +67,11 @@ void flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned
        if (cache_is_vipt_aliasing()) {
                asm(    "mcr    p15, 0, %0, c7, c14, 0\n"
-                "       mcr     p15, 0, %0, c7, c10, 4\n"
+                "       mcr     p15, 0, %0, c7, c10, 4"
-#ifndef CONFIG_ARM_ERRATA_411920
-                "       mcr     p15, 0, %0, c7, c5, 0\n"
-#endif
                    :
                    : "r" (0)
                    : "cc");
-#ifdef CONFIG_ARM_ERRATA_411920
+                __flush_icache_all();
-                v6_icache_inval_all();
-#endif
        }
 }
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 40940d7ce4ff..52c40d155672 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -273,7 +273,6 @@ static void __init bootmem_init_node(int node, struct meminfo *mi,
                struct membank *bank = &mi->bank[i];
                if (!bank->highmem)
                        free_bootmem_node(pgdat, bank_phys_start(bank), bank_phys_size(bank));
-                memory_present(node, bank_pfn_start(bank), bank_pfn_end(bank));
        }
        /*
@@ -370,6 +369,19 @@ int pfn_valid(unsigned long pfn)
        return 0;
 }
 EXPORT_SYMBOL(pfn_valid);
+static void arm_memory_present(struct meminfo *mi, int node)
+{
+}
+#else
+static void arm_memory_present(struct meminfo *mi, int node)
+{
+        int i;
+        for_each_nodebank(i, mi, node) {
+                struct membank *bank = &mi->bank[i];
+                memory_present(node, bank_pfn_start(bank), bank_pfn_end(bank));
+        }
+}
 #endif
 static int __init meminfo_cmp(const void *_a, const void *_b)
@@ -427,6 +439,12 @@ void __init bootmem_init(void)
                 */
                if (node == initrd_node)
                        bootmem_reserve_initrd(node);
+                /*
+                 * Sparsemem tries to allocate bootmem in memory_present(),
+                 * so must be done after the fixed reservations
+                 */
+                arm_memory_present(mi, node);
        }
        /*
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 02243eeccf50..ea67be0223ac 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -117,6 +117,13 @@ static void __init early_cachepolicy(char **p)
        }
        if (i == ARRAY_SIZE(cache_policies))
                printk(KERN_ERR "ERROR: unknown or unsupported cache policy\n");
+        /*
+         * This restriction is partly to do with the way we boot; it is
+         * unpredictable to have memory mapped using two different sets of
+         * memory attributes (shared, type, and cache attribs).  We can not
+         * change these attributes once the initial assembly has setup the
+         * page tables.
+         */
        if (cpu_architecture() >= CPU_ARCH_ARMv6) {
                printk(KERN_WARNING "Only cachepolicy=writeback supported on ARMv6 and later\n");
                cachepolicy = CPOLICY_WRITEBACK;
diff --git a/arch/arm/mm/proc-v6.S b/arch/arm/mm/proc-v6.S
index 194737d60a22..70f75d2e3ead 100644
--- a/arch/arm/mm/proc-v6.S
+++ b/arch/arm/mm/proc-v6.S
@@ -32,8 +32,10 @@
 #ifndef CONFIG_SMP
 #define TTB_FLAGS       TTB_RGN_WBWA
+#define PMD_FLAGS       PMD_SECT_WB
 #else
 #define TTB_FLAGS       TTB_RGN_WBWA|TTB_S
+#define PMD_FLAGS       PMD_SECT_WBWA|PMD_SECT_S
 #endif
 ENTRY(cpu_v6_proc_init)
@@ -222,10 +224,9 @@ __v6_proc_info:
        .long   0x0007b000
        .long   0x0007f000
        .long   PMD_TYPE_SECT | \
-                PMD_SECT_BUFFERABLE | \
-                PMD_SECT_CACHEABLE | \
                PMD_SECT_AP_WRITE | \
-                PMD_SECT_AP_READ
+                PMD_SECT_AP_READ | \
+                PMD_FLAGS
        .long   PMD_TYPE_SECT | \
                PMD_SECT_XN | \
                PMD_SECT_AP_WRITE | \
diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S
index 23ebcf6eab9f..eeeed01ee44a 100644
--- a/arch/arm/mm/proc-v7.S
+++ b/arch/arm/mm/proc-v7.S
@@ -33,9 +33,11 @@
 #ifndef CONFIG_SMP
 /* PTWs cacheable, inner WB not shareable, outer WB not shareable */
 #define TTB_FLAGS       TTB_IRGN_WB|TTB_RGN_OC_WB
+#define PMD_FLAGS       PMD_SECT_WB
 #else
 /* PTWs cacheable, inner WBWA shareable, outer WBWA not shareable */
 #define TTB_FLAGS       TTB_IRGN_WBWA|TTB_S|TTB_NOS|TTB_RGN_OC_WBWA
+#define PMD_FLAGS       PMD_SECT_WBWA|PMD_SECT_S
 #endif
 ENTRY(cpu_v7_proc_init)
@@ -326,10 +328,9 @@ __v7_proc_info:
        .long   0x000f0000              @ Required ID value
        .long   0x000f0000              @ Mask for ID
        .long   PMD_TYPE_SECT | \
-                PMD_SECT_BUFFERABLE | \
-                PMD_SECT_CACHEABLE | \
                PMD_SECT_AP_WRITE | \
-                PMD_SECT_AP_READ
+                PMD_SECT_AP_READ | \
+                PMD_FLAGS
        .long   PMD_TYPE_SECT | \
                PMD_SECT_XN | \
                PMD_SECT_AP_WRITE | \
diff --git a/arch/ia64/include/asm/spinlock.h b/arch/ia64/include/asm/spinlock.h
index 30bb930e1111..239ecdc9516d 100644
--- a/arch/ia64/include/asm/spinlock.h
+++ b/arch/ia64/include/asm/spinlock.h
@@ -25,61 +25,82 @@
 * by atomically noting the tail and incrementing it by one (thus adding
 * ourself to the queue and noting our position), then waiting until the head
 * becomes equal to the the initial value of the tail.
+ * The pad bits in the middle are used to prevent the next_ticket number
+ * overflowing into the now_serving number.
 *
- *   63                     32  31                      0
+ *   31             17  16    15  14                    0
 *  +----------------------------------------------------+
- *  |  next_ticket_number      |     now_serving         |
+ *  |  now_serving     | padding |   next_ticket         |
 *  +----------------------------------------------------+
 */
-#define TICKET_SHIFT    32
+#define TICKET_SHIFT    17
+#define TICKET_BITS     15
+#define TICKET_MASK     ((1 << TICKET_BITS) - 1)
 static __always_inline void __ticket_spin_lock(raw_spinlock_t *lock)
 {
-        int     *p = (int *)&lock->lock, turn, now_serving;
+        int     *p = (int *)&lock->lock, ticket, serve;
-        now_serving = *p;
+        ticket = ia64_fetchadd(1, p, acq);
-        turn = ia64_fetchadd(1, p+1, acq);
-        if (turn == now_serving)
+        if (!(((ticket >> TICKET_SHIFT) ^ ticket) & TICKET_MASK))
                return;
-        do {
+        ia64_invala();
+        for (;;) {
+                asm volatile ("ld4.c.nc %0=[%1]" : "=r"(serve) : "r"(p) : "memory");
+                if (!(((serve >> TICKET_SHIFT) ^ ticket) & TICKET_MASK))
+                        return;
                cpu_relax();
-        } while (ACCESS_ONCE(*p) != turn);
+        }
 }
 static __always_inline int __ticket_spin_trylock(raw_spinlock_t *lock)
 {
-        long tmp = ACCESS_ONCE(lock->lock), try;
+        int tmp = ACCESS_ONCE(lock->lock);
-        if (!(((tmp >> TICKET_SHIFT) ^ tmp) & ((1L << TICKET_SHIFT) - 1))) {
-                try = tmp + (1L << TICKET_SHIFT);
-                return ia64_cmpxchg(acq, &lock->lock, tmp, try, sizeof (tmp)) == tmp;
+        if (!(((tmp >> TICKET_SHIFT) ^ tmp) & TICKET_MASK))
-        }
+                return ia64_cmpxchg(acq, &lock->lock, tmp, tmp + 1, sizeof (tmp)) == tmp;
        return 0;
 }
 static __always_inline void __ticket_spin_unlock(raw_spinlock_t *lock)
 {
-        int     *p = (int *)&lock->lock;
+        unsigned short  *p = (unsigned short *)&lock->lock + 1, tmp;
-        (void)ia64_fetchadd(1, p, rel);
+        asm volatile ("ld2.bias %0=[%1]" : "=r"(tmp) : "r"(p));
+        ACCESS_ONCE(*p) = (tmp + 2) & ~1;
+}
+static __always_inline void __ticket_spin_unlock_wait(raw_spinlock_t *lock)
+{
+        int     *p = (int *)&lock->lock, ticket;
+        ia64_invala();
+        for (;;) {
+                asm volatile ("ld4.c.nc %0=[%1]" : "=r"(ticket) : "r"(p) : "memory");
+                if (!(((ticket >> TICKET_SHIFT) ^ ticket) & TICKET_MASK))
+                        return;
+                cpu_relax();
+        }
 }
 static inline int __ticket_spin_is_locked(raw_spinlock_t *lock)
 {
        long tmp = ACCESS_ONCE(lock->lock);
-        return !!(((tmp >> TICKET_SHIFT) ^ tmp) & ((1L << TICKET_SHIFT) - 1));
+        return !!(((tmp >> TICKET_SHIFT) ^ tmp) & TICKET_MASK);
 }
 static inline int __ticket_spin_is_contended(raw_spinlock_t *lock)
 {
        long tmp = ACCESS_ONCE(lock->lock);
-        return (((tmp >> TICKET_SHIFT) - tmp) & ((1L << TICKET_SHIFT) - 1)) > 1;
+        return ((tmp - (tmp >> TICKET_SHIFT)) & TICKET_MASK) > 1;
 }
 static inline int __raw_spin_is_locked(raw_spinlock_t *lock)
@@ -116,8 +137,7 @@ static __always_inline void __raw_spin_lock_flags(raw_spinlock_t *lock,
 static inline void __raw_spin_unlock_wait(raw_spinlock_t *lock)
 {
-        while (__raw_spin_is_locked(lock))
+        __ticket_spin_unlock_wait(lock);
-                cpu_relax();
 }
 #define __raw_read_can_lock(rw)         (*(volatile int *)(rw) >= 0)
diff --git a/arch/ia64/include/asm/spinlock_types.h b/arch/ia64/include/asm/spinlock_types.h
index b61d136d9bc2..474e46f1ab4a 100644
--- a/arch/ia64/include/asm/spinlock_types.h
+++ b/arch/ia64/include/asm/spinlock_types.h
@@ -6,7 +6,7 @@
 #endif
 typedef struct {
-        volatile unsigned long lock;
+        volatile unsigned int lock;
 } raw_spinlock_t;
 #define __RAW_SPIN_LOCK_UNLOCKED        { 0 }
diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c
index d2877a7bfe2e..496ac7a99488 100644
--- a/arch/ia64/kernel/mca.c
+++ b/arch/ia64/kernel/mca.c
@@ -887,6 +887,60 @@ ia64_mca_modify_comm(const struct task_struct *previous_current)
        memcpy(current->comm, comm, sizeof(current->comm));
 }
+static void
+finish_pt_regs(struct pt_regs *regs, const pal_min_state_area_t *ms,
+                unsigned long *nat)
+{
+        const u64 *bank;
+        /* If ipsr.ic then use pmsa_{iip,ipsr,ifs}, else use
+         * pmsa_{xip,xpsr,xfs}
+         */
+        if (ia64_psr(regs)->ic) {
+                regs->cr_iip = ms->pmsa_iip;
+                regs->cr_ipsr = ms->pmsa_ipsr;
+                regs->cr_ifs = ms->pmsa_ifs;
+        } else {
+                regs->cr_iip = ms->pmsa_xip;
+                regs->cr_ipsr = ms->pmsa_xpsr;
+                regs->cr_ifs = ms->pmsa_xfs;
+        }
+        regs->pr = ms->pmsa_pr;
+        regs->b0 = ms->pmsa_br0;
+        regs->ar_rsc = ms->pmsa_rsc;
+        copy_reg(&ms->pmsa_gr[1-1], ms->pmsa_nat_bits, &regs->r1, nat);
+        copy_reg(&ms->pmsa_gr[2-1], ms->pmsa_nat_bits, &regs->r2, nat);
+        copy_reg(&ms->pmsa_gr[3-1], ms->pmsa_nat_bits, &regs->r3, nat);
+        copy_reg(&ms->pmsa_gr[8-1], ms->pmsa_nat_bits, &regs->r8, nat);
+        copy_reg(&ms->pmsa_gr[9-1], ms->pmsa_nat_bits, &regs->r9, nat);
+        copy_reg(&ms->pmsa_gr[10-1], ms->pmsa_nat_bits, &regs->r10, nat);
+        copy_reg(&ms->pmsa_gr[11-1], ms->pmsa_nat_bits, &regs->r11, nat);
+        copy_reg(&ms->pmsa_gr[12-1], ms->pmsa_nat_bits, &regs->r12, nat);
+        copy_reg(&ms->pmsa_gr[13-1], ms->pmsa_nat_bits, &regs->r13, nat);
+        copy_reg(&ms->pmsa_gr[14-1], ms->pmsa_nat_bits, &regs->r14, nat);
+        copy_reg(&ms->pmsa_gr[15-1], ms->pmsa_nat_bits, &regs->r15, nat);
+        if (ia64_psr(regs)->bn)
+                bank = ms->pmsa_bank1_gr;
+        else
+                bank = ms->pmsa_bank0_gr;
+        copy_reg(&bank[16-16], ms->pmsa_nat_bits, &regs->r16, nat);
+        copy_reg(&bank[17-16], ms->pmsa_nat_bits, &regs->r17, nat);
+        copy_reg(&bank[18-16], ms->pmsa_nat_bits, &regs->r18, nat);
+        copy_reg(&bank[19-16], ms->pmsa_nat_bits, &regs->r19, nat);
+        copy_reg(&bank[20-16], ms->pmsa_nat_bits, &regs->r20, nat);
+        copy_reg(&bank[21-16], ms->pmsa_nat_bits, &regs->r21, nat);
+        copy_reg(&bank[22-16], ms->pmsa_nat_bits, &regs->r22, nat);
+        copy_reg(&bank[23-16], ms->pmsa_nat_bits, &regs->r23, nat);
+        copy_reg(&bank[24-16], ms->pmsa_nat_bits, &regs->r24, nat);
+        copy_reg(&bank[25-16], ms->pmsa_nat_bits, &regs->r25, nat);
+        copy_reg(&bank[26-16], ms->pmsa_nat_bits, &regs->r26, nat);
+        copy_reg(&bank[27-16], ms->pmsa_nat_bits, &regs->r27, nat);
+        copy_reg(&bank[28-16], ms->pmsa_nat_bits, &regs->r28, nat);
+        copy_reg(&bank[29-16], ms->pmsa_nat_bits, &regs->r29, nat);
+        copy_reg(&bank[30-16], ms->pmsa_nat_bits, &regs->r30, nat);
+        copy_reg(&bank[31-16], ms->pmsa_nat_bits, &regs->r31, nat);
+}
 /* On entry to this routine, we are running on the per cpu stack, see
 * mca_asm.h.  The original stack has not been touched by this event.  Some of
 * the original stack's registers will be in the RBS on this stack.  This stack
@@ -921,7 +975,6 @@ ia64_mca_modify_original_stack(struct pt_regs *regs,
        u64 r12 = ms->pmsa_gr[12-1], r13 = ms->pmsa_gr[13-1];
        u64 ar_bspstore = regs->ar_bspstore;
        u64 ar_bsp = regs->ar_bspstore + (loadrs >> 16);
-        const u64 *bank;
        const char *msg;
        int cpu = smp_processor_id();
@@ -1024,54 +1077,9 @@ ia64_mca_modify_original_stack(struct pt_regs *regs,
        p = (char *)r12 - sizeof(*regs);
        old_regs = (struct pt_regs *)p;
        memcpy(old_regs, regs, sizeof(*regs));
-        /* If ipsr.ic then use pmsa_{iip,ipsr,ifs}, else use
-         * pmsa_{xip,xpsr,xfs}
-         */
-        if (ia64_psr(regs)->ic) {
-                old_regs->cr_iip = ms->pmsa_iip;
-                old_regs->cr_ipsr = ms->pmsa_ipsr;
-                old_regs->cr_ifs = ms->pmsa_ifs;
-        } else {
-                old_regs->cr_iip = ms->pmsa_xip;
-                old_regs->cr_ipsr = ms->pmsa_xpsr;
-                old_regs->cr_ifs = ms->pmsa_xfs;
-        }
-        old_regs->pr = ms->pmsa_pr;
-        old_regs->b0 = ms->pmsa_br0;
        old_regs->loadrs = loadrs;
-        old_regs->ar_rsc = ms->pmsa_rsc;
        old_unat = old_regs->ar_unat;
-        copy_reg(&ms->pmsa_gr[1-1], ms->pmsa_nat_bits, &old_regs->r1, &old_unat);
+        finish_pt_regs(old_regs, ms, &old_unat);
-        copy_reg(&ms->pmsa_gr[2-1], ms->pmsa_nat_bits, &old_regs->r2, &old_unat);
-        copy_reg(&ms->pmsa_gr[3-1], ms->pmsa_nat_bits, &old_regs->r3, &old_unat);
-        copy_reg(&ms->pmsa_gr[8-1], ms->pmsa_nat_bits, &old_regs->r8, &old_unat);
-        copy_reg(&ms->pmsa_gr[9-1], ms->pmsa_nat_bits, &old_regs->r9, &old_unat);
-        copy_reg(&ms->pmsa_gr[10-1], ms->pmsa_nat_bits, &old_regs->r10, &old_unat);
-        copy_reg(&ms->pmsa_gr[11-1], ms->pmsa_nat_bits, &old_regs->r11, &old_unat);
-        copy_reg(&ms->pmsa_gr[12-1], ms->pmsa_nat_bits, &old_regs->r12, &old_unat);
-        copy_reg(&ms->pmsa_gr[13-1], ms->pmsa_nat_bits, &old_regs->r13, &old_unat);
-        copy_reg(&ms->pmsa_gr[14-1], ms->pmsa_nat_bits, &old_regs->r14, &old_unat);
-        copy_reg(&ms->pmsa_gr[15-1], ms->pmsa_nat_bits, &old_regs->r15, &old_unat);
-        if (ia64_psr(old_regs)->bn)
-                bank = ms->pmsa_bank1_gr;
-        else
-                bank = ms->pmsa_bank0_gr;
-        copy_reg(&bank[16-16], ms->pmsa_nat_bits, &old_regs->r16, &old_unat);
-        copy_reg(&bank[17-16], ms->pmsa_nat_bits, &old_regs->r17, &old_unat);
-        copy_reg(&bank[18-16], ms->pmsa_nat_bits, &old_regs->r18, &old_unat);
-        copy_reg(&bank[19-16], ms->pmsa_nat_bits, &old_regs->r19, &old_unat);
-        copy_reg(&bank[20-16], ms->pmsa_nat_bits, &old_regs->r20, &old_unat);
-        copy_reg(&bank[21-16], ms->pmsa_nat_bits, &old_regs->r21, &old_unat);
-        copy_reg(&bank[22-16], ms->pmsa_nat_bits, &old_regs->r22, &old_unat);
-        copy_reg(&bank[23-16], ms->pmsa_nat_bits, &old_regs->r23, &old_unat);
-        copy_reg(&bank[24-16], ms->pmsa_nat_bits, &old_regs->r24, &old_unat);
-        copy_reg(&bank[25-16], ms->pmsa_nat_bits, &old_regs->r25, &old_unat);
-        copy_reg(&bank[26-16], ms->pmsa_nat_bits, &old_regs->r26, &old_unat);
-        copy_reg(&bank[27-16], ms->pmsa_nat_bits, &old_regs->r27, &old_unat);
-        copy_reg(&bank[28-16], ms->pmsa_nat_bits, &old_regs->r28, &old_unat);
-        copy_reg(&bank[29-16], ms->pmsa_nat_bits, &old_regs->r29, &old_unat);
-        copy_reg(&bank[30-16], ms->pmsa_nat_bits, &old_regs->r30, &old_unat);
-        copy_reg(&bank[31-16], ms->pmsa_nat_bits, &old_regs->r31, &old_unat);
        /* Next stack a struct switch_stack.  mca_asm.S built a partial
         * switch_stack, copy it and fill in the blanks using pt_regs and
@@ -1141,6 +1149,8 @@ ia64_mca_modify_original_stack(struct pt_regs *regs,
 no_mod:
        mprintk(KERN_INFO "cpu %d, %s %s, original stack not modified\n",
                        smp_processor_id(), type, msg);
+        old_unat = regs->ar_unat;
+        finish_pt_regs(regs, ms, &old_unat);
        return previous_current;
 }
diff --git a/arch/ia64/kernel/unaligned.c b/arch/ia64/kernel/unaligned.c
index 6db08599ebbc..776dd40397e2 100644
--- a/arch/ia64/kernel/unaligned.c
+++ b/arch/ia64/kernel/unaligned.c
@@ -60,7 +60,6 @@ dump (const char *str, void *vp, size_t len)
 */
 int no_unaligned_warning;
 int unaligned_dump_stack;
-static int noprint_warning;
 /*
 * For M-unit:
@@ -1357,9 +1356,8 @@ ia64_handle_unaligned (unsigned long ifa, struct pt_regs *regs)
                        /* watch for command names containing %s */
                        printk(KERN_WARNING "%s", buf);
                } else {
-                        if (no_unaligned_warning && !noprint_warning) {
+                        if (no_unaligned_warning) {
-                                noprint_warning = 1;
+                                printk_once(KERN_WARNING "%s(%d) encountered an "
-                                printk(KERN_WARNING "%s(%d) encountered an "
                                       "unaligned exception which required\n"
                                       "kernel assistance, which degrades "
                                       "the performance of the application.\n"
diff --git a/arch/ia64/mm/tlb.c b/arch/ia64/mm/tlb.c
index f426dc78d959..ee09d261f2e6 100644
--- a/arch/ia64/mm/tlb.c
+++ b/arch/ia64/mm/tlb.c
@@ -100,24 +100,36 @@ wrap_mmu_context (struct mm_struct *mm)
 * this primitive it can be moved up to a spinaphore.h header.
 */
 struct spinaphore {
-        atomic_t        cur;
+        unsigned long   ticket;
+        unsigned long   serve;
 };
 static inline void spinaphore_init(struct spinaphore *ss, int val)
 {
-        atomic_set(&ss->cur, val);
+        ss->ticket = 0;
+        ss->serve = val;
 }
 static inline void down_spin(struct spinaphore *ss)
 {
-        while (unlikely(!atomic_add_unless(&ss->cur, -1, 0)))
+        unsigned long t = ia64_fetchadd(1, &ss->ticket, acq), serve;
-                while (atomic_read(&ss->cur) == 0)
-                        cpu_relax();
+        if (time_before(t, ss->serve))
+                return;
+        ia64_invala();
+        for (;;) {
+                asm volatile ("ld4.c.nc %0=[%1]" : "=r"(serve) : "r"(&ss->serve) : "memory");
+                if (time_before(t, serve))
+                        return;
+                cpu_relax();
+        }
 }
 static inline void up_spin(struct spinaphore *ss)
 {
-        atomic_add(1, &ss->cur);
+        ia64_fetchadd(1, &ss->serve, rel);
 }
 static struct spinaphore ptcg_sem;
diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c
index 7de76dd352fe..c0fca2c1c858 100644
--- a/arch/ia64/pci/pci.c
+++ b/arch/ia64/pci/pci.c
@@ -56,10 +56,13 @@ int raw_pci_read(unsigned int seg, unsigned int bus, unsigned int devfn,
        if ((seg | reg) <= 255) {
                addr = PCI_SAL_ADDRESS(seg, bus, devfn, reg);
                mode = 0;
-        } else {
+        } else if (sal_revision >= SAL_VERSION_CODE(3,2)) {
                addr = PCI_SAL_EXT_ADDRESS(seg, bus, devfn, reg);
                mode = 1;
+        } else {
+                return -EINVAL;
        }
        result = ia64_sal_pci_config_read(addr, mode, len, &data);
        if (result != 0)
                return -EINVAL;
@@ -80,9 +83,11 @@ int raw_pci_write(unsigned int seg, unsigned int bus, unsigned int devfn,
        if ((seg | reg) <= 255) {
                addr = PCI_SAL_ADDRESS(seg, bus, devfn, reg);
                mode = 0;
-        } else {
+        } else if (sal_revision >= SAL_VERSION_CODE(3,2)) {
                addr = PCI_SAL_EXT_ADDRESS(seg, bus, devfn, reg);
                mode = 1;
+        } else {
+                return -EINVAL;
        }
        result = ia64_sal_pci_config_write(addr, mode, len, value);
        if (result != 0)
diff --git a/arch/ia64/sn/kernel/io_common.c b/arch/ia64/sn/kernel/io_common.c
index 25831c47c579..308e6595110e 100644
--- a/arch/ia64/sn/kernel/io_common.c
+++ b/arch/ia64/sn/kernel/io_common.c
@@ -119,7 +119,6 @@ sn_pcidev_info_get(struct pci_dev *dev)
 * Additionally note that the struct sn_flush_device_war also has to be
 * removed from arch/ia64/sn/include/xtalk/hubdev.h
 */
-static u8 war_implemented = 0;
 static s64 sn_device_fixup_war(u64 nasid, u64 widget, int device,
                               struct sn_flush_device_common *common)
@@ -128,11 +127,8 @@ static s64 sn_device_fixup_war(u64 nasid, u64 widget, int device,
        struct sn_flush_device_war *dev_entry;
        struct ia64_sal_retval isrv = {0,0,0,0};
-        if (!war_implemented) {
+        printk_once(KERN_WARNING
-                printk(KERN_WARNING "PROM version < 4.50 -- implementing old "
+                "PROM version < 4.50 -- implementing old PROM flush WAR\n");
-                       "PROM flush WAR\n");
-                war_implemented = 1;
-        }
        war_list = kzalloc(DEV_PER_WIDGET * sizeof(*war_list), GFP_KERNEL);
        BUG_ON(!war_list);
diff --git a/arch/ia64/sn/kernel/sn2/sn_hwperf.c b/arch/ia64/sn/kernel/sn2/sn_hwperf.c
index 4c7e74790958..55ac3c4e11d2 100644
--- a/arch/ia64/sn/kernel/sn2/sn_hwperf.c
+++ b/arch/ia64/sn/kernel/sn2/sn_hwperf.c
@@ -786,17 +786,18 @@ sn_hwperf_ioctl(struct inode *in, struct file *fp, u32 op, unsigned long arg)
                break;
        case SN_HWPERF_GET_OBJ_NODE:
-                if (a.sz != sizeof(u64) || a.arg < 0) {
+                i = a.arg;
+                if (a.sz != sizeof(u64) || i < 0) {
                        r = -EINVAL;
                        goto error;
                }
                if ((r = sn_hwperf_enum_objects(&nobj, &objs)) == 0) {
-                        if (a.arg >= nobj) {
+                        if (i >= nobj) {
                                r = -EINVAL;
                                vfree(objs);
                                goto error;
                        }
-                        if (objs[(i = a.arg)].id != a.arg) {
+                        if (objs[i].id != a.arg) {
                                for (i = 0; i < nobj; i++) {
                                        if (objs[i].id == a.arg)
                                                break;
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 07e01149e3bf..72ace9515a07 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1443,12 +1443,8 @@ config SECCOMP
          If unsure, say Y. Only embedded should say N here.
-config CC_STACKPROTECTOR_ALL
-        bool
 config CC_STACKPROTECTOR
        bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
-        select CC_STACKPROTECTOR_ALL
        ---help---
          This option turns on the -fstack-protector GCC feature. This
          feature puts, at the beginning of functions, a canary value on
diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu
index f2824fb8c79c..2649840d888f 100644
--- a/arch/x86/Kconfig.cpu
+++ b/arch/x86/Kconfig.cpu
@@ -400,7 +400,7 @@ config X86_TSC
 config X86_CMPXCHG64
        def_bool y
-        depends on X86_PAE || X86_64 || MCORE2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MATOM
+        depends on !M386 && !M486
 # this should be set for all -march=.. options where the compiler
 # generates cmov.
diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index a012ee8ef803..d2d24c9ee64d 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -76,7 +76,6 @@ ifdef CONFIG_CC_STACKPROTECTOR
        cc_has_sp := $(srctree)/scripts/gcc-x86_$(BITS)-has-stack-protector.sh
        ifeq ($(shell $(CONFIG_SHELL) $(cc_has_sp) $(CC) $(biarch)),y)
                stackp-y := -fstack-protector
-                stackp-$(CONFIG_CC_STACKPROTECTOR_ALL) += -fstack-protector-all
                KBUILD_CFLAGS += $(stackp-y)
        else
                $(warning stack protector enabled but no compiler support)
diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S
index 1733f9f65e82..581b0568fe19 100644
--- a/arch/x86/ia32/ia32entry.S
+++ b/arch/x86/ia32/ia32entry.S
@@ -204,7 +204,7 @@ sysexit_from_sys_call:
        movl RDI-ARGOFFSET(%rsp),%r8d   /* reload 5th syscall arg */
        .endm
-        .macro auditsys_exit exit,ebpsave=RBP
+        .macro auditsys_exit exit
        testl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),TI_flags(%r10)
        jnz ia32_ret_from_sys_call
        TRACE_IRQS_ON
@@ -217,7 +217,6 @@ sysexit_from_sys_call:
        call audit_syscall_exit
        GET_THREAD_INFO(%r10)
        movl RAX-ARGOFFSET(%rsp),%eax   /* reload syscall return value */
-        movl \ebpsave-ARGOFFSET(%rsp),%ebp /* reload user register value */
        movl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),%edi
        cli
        TRACE_IRQS_OFF
@@ -351,7 +350,7 @@ cstar_auditsys:
        jmp cstar_dispatch
 sysretl_audit:
-        auditsys_exit sysretl_from_sys_call, RCX /* user %ebp in RCX slot */
+        auditsys_exit sysretl_from_sys_call
 #endif
 cstar_tracesys:
diff --git a/arch/x86/kernel/crash_dump_32.c b/arch/x86/kernel/crash_dump_32.c
index f7cdb3b457aa..cd97ce18c29d 100644
--- a/arch/x86/kernel/crash_dump_32.c
+++ b/arch/x86/kernel/crash_dump_32.c
@@ -16,6 +16,22 @@ static void *kdump_buf_page;
 /* Stores the physical address of elf header of crash image. */
 unsigned long long elfcorehdr_addr = ELFCORE_ADDR_MAX;
+static inline bool is_crashed_pfn_valid(unsigned long pfn)
+{
+#ifndef CONFIG_X86_PAE
+        /*
+         * non-PAE kdump kernel executed from a PAE one will crop high pte
+         * bits and poke unwanted space counting again from address 0, we
+         * don't want that. pte must fit into unsigned long. In fact the
+         * test checks high 12 bits for being zero (pfn will be shifted left
+         * by PAGE_SHIFT).
+         */
+        return pte_pfn(pfn_pte(pfn, __pgprot(0))) == pfn;
+#else
+        return true;
+#endif
+}
 /**
 * copy_oldmem_page - copy one page from "oldmem"
 * @pfn: page frame number to be copied
@@ -41,6 +57,9 @@ ssize_t copy_oldmem_page(unsigned long pfn, char *buf,
        if (!csize)
                return 0;
+        if (!is_crashed_pfn_valid(pfn))
+                return -EFAULT;
        vaddr = kmap_atomic_pfn(pfn, KM_PTE0);
        if (!userbuf) {
diff --git a/arch/x86/kernel/efi.c b/arch/x86/kernel/efi.c
index ad5bd988fb79..cdcfb122f256 100644
--- a/arch/x86/kernel/efi.c
+++ b/arch/x86/kernel/efi.c
@@ -454,8 +454,10 @@ void __init efi_init(void)
        if (add_efi_memmap)
                do_add_efi_memmap();
+#ifdef CONFIG_X86_32
        x86_platform.get_wallclock = efi_get_time;
        x86_platform.set_wallclock = efi_set_rtc_mmss;
+#endif
        /* Setup for EFI runtime service */
        reboot_type = BOOT_EFI;
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index b93814c0d3e2..7f436ec075f6 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -89,7 +89,8 @@ static int i915_suspend(struct drm_device *dev, pm_message_t state)
                pci_set_power_state(dev->pdev, PCI_D3hot);
        }
-        dev_priv->suspended = 1;
+        /* Modeset on resume, not lid events */
+        dev_priv->modeset_on_lid = 0;
        return 0;
 }
@@ -124,7 +125,7 @@ static int i915_resume(struct drm_device *dev)
                drm_helper_resume_force_mode(dev);
        }
-        dev_priv->suspended = 0;
+        dev_priv->modeset_on_lid = 0;
        return ret;
 }
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 6035d3dae851..c5df2234418d 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -274,7 +274,7 @@ typedef struct drm_i915_private {
        struct drm_i915_display_funcs display;
        /* Register state */
-        bool suspended;
+        bool modeset_on_lid;
        u8 saveLBB;
        u32 saveDSPACNTR;
        u32 saveDSPBCNTR;
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index 98ae3d73577e..808bbe412ba8 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -656,6 +656,15 @@ static int intel_lvds_get_modes(struct drm_connector *connector)
        return 0;
 }
+/*
+ * Lid events. Note the use of 'modeset_on_lid':
+ *  - we set it on lid close, and reset it on open
+ *  - we use it as a "only once" bit (ie we ignore
+ *    duplicate events where it was already properly
+ *    set/reset)
+ *  - the suspend/resume paths will also set it to
+ *    zero, since they restore the mode ("lid open").
+ */
 static int intel_lid_notify(struct notifier_block *nb, unsigned long val,
                            void *unused)
 {
@@ -663,13 +672,19 @@ static int intel_lid_notify(struct notifier_block *nb, unsigned long val,
                container_of(nb, struct drm_i915_private, lid_notifier);
        struct drm_device *dev = dev_priv->dev;
-        if (acpi_lid_open() && !dev_priv->suspended) {
+        if (!acpi_lid_open()) {
-                mutex_lock(&dev->mode_config.mutex);
+                dev_priv->modeset_on_lid = 1;
-                drm_helper_resume_force_mode(dev);
+                return NOTIFY_OK;
-                mutex_unlock(&dev->mode_config.mutex);
        }
-        drm_sysfs_hotplug_event(dev_priv->dev);
+        if (!dev_priv->modeset_on_lid)
+                return NOTIFY_OK;
+        dev_priv->modeset_on_lid = 0;
+        mutex_lock(&dev->mode_config.mutex);
+        drm_helper_resume_force_mode(dev);
+        mutex_unlock(&dev->mode_config.mutex);
        return NOTIFY_OK;
 }
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 984ca0cb38c3..00d153f2f261 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -743,6 +743,7 @@ struct ext4_inode_info {
 #define EXT4_MOUNT_QUOTA                0x80000 /* Some quota option set */
 #define EXT4_MOUNT_USRQUOTA             0x100000 /* "old" user quota */
 #define EXT4_MOUNT_GRPQUOTA             0x200000 /* "old" group quota */
+#define EXT4_MOUNT_JOURNAL_CHECKSUM     0x800000 /* Journal checksums */
 #define EXT4_MOUNT_JOURNAL_ASYNC_COMMIT 0x1000000 /* Journal Async Commit */
 #define EXT4_MOUNT_I_VERSION            0x2000000 /* i_version support */
 #define EXT4_MOUNT_DELALLOC             0x8000000 /* Delalloc support */
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 312211ee05af..d4ca92aab514 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1300,9 +1300,11 @@ static int parse_options(char *options, struct super_block *sb,
                        *journal_devnum = option;
                        break;
                case Opt_journal_checksum:
-                        break;  /* Kept for backwards compatibility */
+                        set_opt(sbi->s_mount_opt, JOURNAL_CHECKSUM);
+                        break;
                case Opt_journal_async_commit:
                        set_opt(sbi->s_mount_opt, JOURNAL_ASYNC_COMMIT);
+                        set_opt(sbi->s_mount_opt, JOURNAL_CHECKSUM);
                        break;
                case Opt_noload:
                        set_opt(sbi->s_mount_opt, NOLOAD);
@@ -2759,14 +2761,20 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
                goto failed_mount4;
        }
-        jbd2_journal_set_features(sbi->s_journal,
+        if (test_opt(sb, JOURNAL_ASYNC_COMMIT)) {
-                                  JBD2_FEATURE_COMPAT_CHECKSUM, 0, 0);
+                jbd2_journal_set_features(sbi->s_journal,
-        if (test_opt(sb, JOURNAL_ASYNC_COMMIT))
+                                JBD2_FEATURE_COMPAT_CHECKSUM, 0,
-                jbd2_journal_set_features(sbi->s_journal, 0, 0,
                                JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT);
-        else
+        } else if (test_opt(sb, JOURNAL_CHECKSUM)) {
+                jbd2_journal_set_features(sbi->s_journal,
+                                JBD2_FEATURE_COMPAT_CHECKSUM, 0, 0);
                jbd2_journal_clear_features(sbi->s_journal, 0, 0,
                                JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT);
+        } else {
+                jbd2_journal_clear_features(sbi->s_journal,
+                                JBD2_FEATURE_COMPAT_CHECKSUM, 0,
+                                JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT);
+        }
        /* We have now updated the journal if required, so we can
         * validate the data journaling mode. */
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 2e6d95f97419..9e7012689a84 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -471,8 +471,8 @@ struct hw_perf_event {
                        unsigned long   event_base;
                        int             idx;
                };
-                union { /* software */
+                struct { /* software */
-                        atomic64_t      count;
+                        s64             remaining;
                        struct hrtimer  hrtimer;
                };
        };
diff --git a/include/linux/trace_seq.h b/include/linux/trace_seq.h
index c134dd1fe6b6..09077f6ed128 100644
--- a/include/linux/trace_seq.h
+++ b/include/linux/trace_seq.h
@@ -7,7 +7,7 @@
 /*
 * Trace sequences are used to allow a function to call several other functions
- * to create a string of data to use (up to a max of PAGE_SIZE.
+ * to create a string of data to use (up to a max of PAGE_SIZE).
 */
 struct trace_seq {
diff --git a/kernel/futex.c b/kernel/futex.c
index 642f3bbaacc7..fb65e822fc41 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -2127,7 +2127,7 @@ int handle_early_requeue_pi_wakeup(struct futex_hash_bucket *hb,
                plist_del(&q->list, &q->list.plist);
                /* Handle spurious wakeups gracefully */
-                ret = -EAGAIN;
+                ret = -EWOULDBLOCK;
                if (timeout && !timeout->task)
                        ret = -ETIMEDOUT;
                else if (signal_pending(current))
@@ -2208,7 +2208,6 @@ static int futex_wait_requeue_pi(u32 __user *uaddr, int fshared,
        debug_rt_mutex_init_waiter(&rt_waiter);
        rt_waiter.task = NULL;
-retry:
        key2 = FUTEX_KEY_INIT;
        ret = get_futex_key(uaddr2, fshared, &key2, VERIFY_WRITE);
        if (unlikely(ret != 0))
@@ -2303,9 +2302,6 @@ out_put_keys:
 out_key2:
        put_futex_key(fshared, &key2);
-        /* Spurious wakeup ? */
-        if (ret == -EAGAIN)
-                goto retry;
 out:
        if (to) {
                hrtimer_cancel(&to->timer);
diff --git a/kernel/perf_event.c b/kernel/perf_event.c
index afb7ef3dbc44..7f29643c8985 100644
--- a/kernel/perf_event.c
+++ b/kernel/perf_event.c
@@ -3959,8 +3959,9 @@ static enum hrtimer_restart perf_swevent_hrtimer(struct hrtimer *hrtimer)
                regs = task_pt_regs(current);
        if (regs) {
-                if (perf_event_overflow(event, 0, &data, regs))
+                if (!(event->attr.exclude_idle && current->pid == 0))
-                        ret = HRTIMER_NORESTART;
+                        if (perf_event_overflow(event, 0, &data, regs))
+                                ret = HRTIMER_NORESTART;
        }
        period = max_t(u64, 10000, event->hw.sample_period);
@@ -3969,6 +3970,42 @@ static enum hrtimer_restart perf_swevent_hrtimer(struct hrtimer *hrtimer)
        return ret;
 }
+static void perf_swevent_start_hrtimer(struct perf_event *event)
+{
+        struct hw_perf_event *hwc = &event->hw;
+        hrtimer_init(&hwc->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
+        hwc->hrtimer.function = perf_swevent_hrtimer;
+        if (hwc->sample_period) {
+                u64 period;
+                if (hwc->remaining) {
+                        if (hwc->remaining < 0)
+                                period = 10000;
+                        else
+                                period = hwc->remaining;
+                        hwc->remaining = 0;
+                } else {
+                        period = max_t(u64, 10000, hwc->sample_period);
+                }
+                __hrtimer_start_range_ns(&hwc->hrtimer,
+                                ns_to_ktime(period), 0,
+                                HRTIMER_MODE_REL, 0);
+        }
+}
+static void perf_swevent_cancel_hrtimer(struct perf_event *event)
+{
+        struct hw_perf_event *hwc = &event->hw;
+        if (hwc->sample_period) {
+                ktime_t remaining = hrtimer_get_remaining(&hwc->hrtimer);
+                hwc->remaining = ktime_to_ns(remaining);
+                hrtimer_cancel(&hwc->hrtimer);
+        }
+}
 /*
 * Software event: cpu wall time clock
 */
@@ -3991,22 +4028,14 @@ static int cpu_clock_perf_event_enable(struct perf_event *event)
        int cpu = raw_smp_processor_id();
        atomic64_set(&hwc->prev_count, cpu_clock(cpu));
-        hrtimer_init(&hwc->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
+        perf_swevent_start_hrtimer(event);
-        hwc->hrtimer.function = perf_swevent_hrtimer;
-        if (hwc->sample_period) {
-                u64 period = max_t(u64, 10000, hwc->sample_period);
-                __hrtimer_start_range_ns(&hwc->hrtimer,
-                                ns_to_ktime(period), 0,
-                                HRTIMER_MODE_REL, 0);
-        }
        return 0;
 }
 static void cpu_clock_perf_event_disable(struct perf_event *event)
 {
-        if (event->hw.sample_period)
+        perf_swevent_cancel_hrtimer(event);
-                hrtimer_cancel(&event->hw.hrtimer);
        cpu_clock_perf_event_update(event);
 }
@@ -4043,22 +4072,15 @@ static int task_clock_perf_event_enable(struct perf_event *event)
        now = event->ctx->time;
        atomic64_set(&hwc->prev_count, now);
-        hrtimer_init(&hwc->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
-        hwc->hrtimer.function = perf_swevent_hrtimer;
+        perf_swevent_start_hrtimer(event);
-        if (hwc->sample_period) {
-                u64 period = max_t(u64, 10000, hwc->sample_period);
-                __hrtimer_start_range_ns(&hwc->hrtimer,
-                                ns_to_ktime(period), 0,
-                                HRTIMER_MODE_REL, 0);
-        }
        return 0;
 }
 static void task_clock_perf_event_disable(struct perf_event *event)
 {
-        if (event->hw.sample_period)
+        perf_swevent_cancel_hrtimer(event);
-                hrtimer_cancel(&event->hw.hrtimer);
        task_clock_perf_event_update(event, event->ctx->time);
 }
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 37ba67e33265..9c451a1930b6 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -740,7 +740,7 @@ ftrace_profile_write(struct file *filp, const char __user *ubuf,
 out:
        mutex_unlock(&ftrace_profile_lock);
-        filp->f_pos += cnt;
+        *ppos += cnt;
        return cnt;
 }
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index d4ff01970547..3ffa502fb243 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -483,7 +483,7 @@ struct ring_buffer_iter {
 /* Up this if you want to test the TIME_EXTENTS and normalization */
 #define DEBUG_SHIFT 0
-static inline u64 rb_time_stamp(struct ring_buffer *buffer, int cpu)
+static inline u64 rb_time_stamp(struct ring_buffer *buffer)
 {
        /* shift to debug/test normalization and TIME_EXTENTS */
        return buffer->clock() << DEBUG_SHIFT;
@@ -494,7 +494,7 @@ u64 ring_buffer_time_stamp(struct ring_buffer *buffer, int cpu)
        u64 time;
        preempt_disable_notrace();
-        time = rb_time_stamp(buffer, cpu);
+        time = rb_time_stamp(buffer);
        preempt_enable_no_resched_notrace();
        return time;
@@ -599,7 +599,7 @@ static struct list_head *rb_list_head(struct list_head *list)
 }
 /*
- * rb_is_head_page - test if the give page is the head page
+ * rb_is_head_page - test if the given page is the head page
 *
 * Because the reader may move the head_page pointer, we can
 * not trust what the head page is (it may be pointing to
@@ -1868,7 +1868,7 @@ rb_move_tail(struct ring_buffer_per_cpu *cpu_buffer,
                 * Nested commits always have zero deltas, so
                 * just reread the time stamp
                 */
-                *ts = rb_time_stamp(buffer, cpu_buffer->cpu);
+                *ts = rb_time_stamp(buffer);
                next_page->page->time_stamp = *ts;
        }
@@ -2111,7 +2111,7 @@ rb_reserve_next_event(struct ring_buffer *buffer,
        if (RB_WARN_ON(cpu_buffer, ++nr_loops > 1000))
                goto out_fail;
-        ts = rb_time_stamp(cpu_buffer->buffer, cpu_buffer->cpu);
+        ts = rb_time_stamp(cpu_buffer->buffer);
        /*
         * Only the first commit can update the timestamp.
@@ -2681,7 +2681,7 @@ unsigned long ring_buffer_entries(struct ring_buffer *buffer)
 EXPORT_SYMBOL_GPL(ring_buffer_entries);
 /**
- * ring_buffer_overrun_cpu - get the number of overruns in buffer
+ * ring_buffer_overruns - get the number of overruns in buffer
 * @buffer: The ring buffer
 *
 * Returns the total number of overruns in the ring buffer
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index c820b0310a12..b20d3ec75de9 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -2440,7 +2440,7 @@ tracing_trace_options_write(struct file *filp, const char __user *ubuf,
                        return ret;
        }
-        filp->f_pos += cnt;
+        *ppos += cnt;
        return cnt;
 }
@@ -2582,7 +2582,7 @@ tracing_ctrl_write(struct file *filp, const char __user *ubuf,
        }
        mutex_unlock(&trace_types_lock);
-        filp->f_pos += cnt;
+        *ppos += cnt;
        return cnt;
 }
@@ -2764,7 +2764,7 @@ tracing_set_trace_write(struct file *filp, const char __user *ubuf,
        if (err)
                return err;
-        filp->f_pos += ret;
+        *ppos += ret;
        return ret;
 }
@@ -3299,7 +3299,7 @@ tracing_entries_write(struct file *filp, const char __user *ubuf,
                }
        }
-        filp->f_pos += cnt;
+        *ppos += cnt;
        /* If check pages failed, return ENOMEM */
        if (tracing_disabled)
diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c
index ed17565826b0..b6c12c6a1bcd 100644
--- a/kernel/trace/trace_output.c
+++ b/kernel/trace/trace_output.c
@@ -69,6 +69,9 @@ enum print_line_t trace_print_printk_msg_only(struct trace_iterator *iter)
 * @s: trace sequence descriptor
 * @fmt: printf format string
 *
+ * It returns 0 if the trace oversizes the buffer's free
+ * space, 1 otherwise.
+ *
 * The tracer may use either sequence operations or its own
 * copy to user routines. To simplify formating of a trace
 * trace_seq_printf is used to store strings into a special
@@ -95,7 +98,7 @@ trace_seq_printf(struct trace_seq *s, const char *fmt, ...)
        s->len += ret;
-        return len;
+        return 1;
 }
 EXPORT_SYMBOL_GPL(trace_seq_printf);
diff --git a/mm/swapfile.c b/mm/swapfile.c
index a1bc6b9af9a2..9c590eef7912 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -1151,8 +1151,7 @@ static int try_to_unuse(unsigned int type)
                                } else
                                        retval = unuse_mm(mm, entry, page);
-                                if (set_start_mm &&
+                                if (set_start_mm && *swap_map < swcount) {
-                                    swap_count(*swap_map) < swcount) {
                                        mmput(new_start_mm);
                                        atomic_inc(&mm->mm_users);
                                        new_start_mm = mm;
diff --git a/sound/core/pcm.c b/sound/core/pcm.c
index 0c1440121c22..c69c60b2a48a 100644
--- a/sound/core/pcm.c
+++ b/sound/core/pcm.c
@@ -953,11 +953,12 @@ static int snd_pcm_dev_register(struct snd_device *device)
        struct snd_pcm_substream *substream;
        struct snd_pcm_notify *notify;
        char str[16];
-        struct snd_pcm *pcm = device->device_data;
+        struct snd_pcm *pcm;
        struct device *dev;
-        if (snd_BUG_ON(!pcm || !device))
+        if (snd_BUG_ON(!device || !device->device_data))
                return -ENXIO;
+        pcm = device->device_data;
        mutex_lock(&register_mutex);
        err = snd_pcm_add(pcm);
        if (err) {
diff --git a/sound/drivers/dummy.c b/sound/drivers/dummy.c
index 6ba066c41d2e..252e04ce602f 100644
--- a/sound/drivers/dummy.c
+++ b/sound/drivers/dummy.c
@@ -165,7 +165,7 @@ MODULE_PARM_DESC(enable, "Enable this dummy soundcard.");
 module_param_array(pcm_devs, int, NULL, 0444);
 MODULE_PARM_DESC(pcm_devs, "PCM devices # (0-4) for dummy driver.");
 module_param_array(pcm_substreams, int, NULL, 0444);
-MODULE_PARM_DESC(pcm_substreams, "PCM substreams # (1-16) for dummy driver.");
+MODULE_PARM_DESC(pcm_substreams, "PCM substreams # (1-128) for dummy driver.");
 //module_param_array(midi_devs, int, NULL, 0444);
 //MODULE_PARM_DESC(midi_devs, "MIDI devices # (0-2) for dummy driver.");
 module_param(fake_buffer, bool, 0444);
@@ -808,8 +808,6 @@ static int __devinit snd_card_dummy_new_mixer(struct snd_dummy *dummy)
        unsigned int idx;
        int err;
-        if (snd_BUG_ON(!dummy))
-                return -EINVAL;
        spin_lock_init(&dummy->mixer_lock);
        strcpy(card->mixername, "Dummy Mixer");
diff --git a/sound/drivers/pcsp/pcsp_lib.c b/sound/drivers/pcsp/pcsp_lib.c
index 84cc2658c05b..e1145ac6e908 100644
--- a/sound/drivers/pcsp/pcsp_lib.c
+++ b/sound/drivers/pcsp/pcsp_lib.c
@@ -39,25 +39,20 @@ static DECLARE_TASKLET(pcsp_pcm_tasklet, pcsp_call_pcm_elapsed, 0);
 /* write the port and returns the next expire time in ns;
 * called at the trigger-start and in hrtimer callback
 */
-static unsigned long pcsp_timer_update(struct hrtimer *handle)
+static u64 pcsp_timer_update(struct snd_pcsp *chip)
 {
        unsigned char timer_cnt, val;
        u64 ns;
        struct snd_pcm_substream *substream;
        struct snd_pcm_runtime *runtime;
-        struct snd_pcsp *chip = container_of(handle, struct snd_pcsp, timer);
        unsigned long flags;
        if (chip->thalf) {
                outb(chip->val61, 0x61);
                chip->thalf = 0;
-                if (!atomic_read(&chip->timer_active))
-                        return 0;
                return chip->ns_rem;
        }
-        if (!atomic_read(&chip->timer_active))
-                return 0;
        substream = chip->playback_substream;
        if (!substream)
                return 0;
@@ -88,24 +83,17 @@ static unsigned long pcsp_timer_update(struct hrtimer *handle)
        return ns;
 }
-enum hrtimer_restart pcsp_do_timer(struct hrtimer *handle)
+static void pcsp_pointer_update(struct snd_pcsp *chip)
 {
-        struct snd_pcsp *chip = container_of(handle, struct snd_pcsp, timer);
        struct snd_pcm_substream *substream;
-        int periods_elapsed, pointer_update;
        size_t period_bytes, buffer_bytes;
-        unsigned long ns;
+        int periods_elapsed;
        unsigned long flags;
-        pointer_update = !chip->thalf;
-        ns = pcsp_timer_update(handle);
-        if (!ns)
-                return HRTIMER_NORESTART;
        /* update the playback position */
        substream = chip->playback_substream;
        if (!substream)
-                return HRTIMER_NORESTART;
+                return;
        period_bytes = snd_pcm_lib_period_bytes(substream);
        buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
@@ -134,6 +122,26 @@ enum hrtimer_restart pcsp_do_timer(struct hrtimer *handle)
        if (periods_elapsed)
                tasklet_schedule(&pcsp_pcm_tasklet);
+}
+enum hrtimer_restart pcsp_do_timer(struct hrtimer *handle)
+{
+        struct snd_pcsp *chip = container_of(handle, struct snd_pcsp, timer);
+        int pointer_update;
+        u64 ns;
+        if (!atomic_read(&chip->timer_active) || !chip->playback_substream)
+                return HRTIMER_NORESTART;
+        pointer_update = !chip->thalf;
+        ns = pcsp_timer_update(chip);
+        if (!ns) {
+                printk(KERN_WARNING "PCSP: unexpected stop\n");
+                return HRTIMER_NORESTART;
+        }
+        if (pointer_update)
+                pcsp_pointer_update(chip);
        hrtimer_forward(handle, hrtimer_get_expires(handle), ns_to_ktime(ns));
@@ -142,8 +150,6 @@ enum hrtimer_restart pcsp_do_timer(struct hrtimer *handle)
 static int pcsp_start_playing(struct snd_pcsp *chip)
 {
-        unsigned long ns;
 #if PCSP_DEBUG
        printk(KERN_INFO "PCSP: start_playing called\n");
 #endif
@@ -159,11 +165,7 @@ static int pcsp_start_playing(struct snd_pcsp *chip)
        atomic_set(&chip->timer_active, 1);
        chip->thalf = 0;
-        ns = pcsp_timer_update(&pcsp_chip.timer);
+        hrtimer_start(&pcsp_chip.timer, ktime_set(0, 0), HRTIMER_MODE_REL);
-        if (!ns)
-                return -EIO;
-        hrtimer_start(&pcsp_chip.timer, ktime_set(0, ns), HRTIMER_MODE_REL);
        return 0;
 }
@@ -232,21 +234,22 @@ static int snd_pcsp_playback_hw_free(struct snd_pcm_substream *substream)
 static int snd_pcsp_playback_prepare(struct snd_pcm_substream *substream)
 {
        struct snd_pcsp *chip = snd_pcm_substream_chip(substream);
+        pcsp_sync_stop(chip);
+        chip->playback_ptr = 0;
+        chip->period_ptr = 0;
+        chip->fmt_size =
+                snd_pcm_format_physical_width(substream->runtime->format) >> 3;
+        chip->is_signed = snd_pcm_format_signed(substream->runtime->format);
 #if PCSP_DEBUG
        printk(KERN_INFO "PCSP: prepare called, "
-                        "size=%zi psize=%zi f=%zi f1=%i\n",
+                        "size=%zi psize=%zi f=%zi f1=%i fsize=%i\n",
                        snd_pcm_lib_buffer_bytes(substream),
                        snd_pcm_lib_period_bytes(substream),
                        snd_pcm_lib_buffer_bytes(substream) /
                        snd_pcm_lib_period_bytes(substream),
-                        substream->runtime->periods);
+                        substream->runtime->periods,
+                        chip->fmt_size);
 #endif
-        pcsp_sync_stop(chip);
-        chip->playback_ptr = 0;
-        chip->period_ptr = 0;
-        chip->fmt_size =
-                snd_pcm_format_physical_width(substream->runtime->format) >> 3;
-        chip->is_signed = snd_pcm_format_signed(substream->runtime->format);
        return 0;
 }
diff --git a/sound/drivers/pcsp/pcsp_mixer.c b/sound/drivers/pcsp/pcsp_mixer.c
index 199b03377142..903bc846763f 100644
--- a/sound/drivers/pcsp/pcsp_mixer.c
+++ b/sound/drivers/pcsp/pcsp_mixer.c
@@ -72,7 +72,7 @@ static int pcsp_treble_put(struct snd_kcontrol *kcontrol,
        if (treble != chip->treble) {
                chip->treble = treble;
 #if PCSP_DEBUG
-                printk(KERN_INFO "PCSP: rate set to %i\n", PCSP_RATE());
+                printk(KERN_INFO "PCSP: rate set to %li\n", PCSP_RATE());
 #endif
                changed = 1;
        }
diff --git a/sound/parisc/harmony.c b/sound/parisc/harmony.c
index e924492df21d..f47f9e226b08 100644
--- a/sound/parisc/harmony.c
+++ b/sound/parisc/harmony.c
@@ -624,6 +624,9 @@ snd_harmony_pcm_init(struct snd_harmony *h)
        struct snd_pcm *pcm;
        int err;
+        if (snd_BUG_ON(!h))
+                return -EINVAL;
        harmony_disable_interrupts(h);
        
        err = snd_pcm_new(h->card, "harmony", 0, 1, 1, &pcm);
@@ -865,11 +868,12 @@ snd_harmony_mixer_reset(struct snd_harmony *h)
 static int __devinit
 snd_harmony_mixer_init(struct snd_harmony *h)
 {
-        struct snd_card *card = h->card;
+        struct snd_card *card;
        int idx, err;
        if (snd_BUG_ON(!h))
                return -EINVAL;
+        card = h->card;
        strcpy(card->mixername, "Harmony Gain control interface");
        for (idx = 0; idx < HARMONY_CONTROLS; idx++) {
diff --git a/sound/pci/Kconfig b/sound/pci/Kconfig
index fb5ee3cc3968..75c602b5b132 100644
--- a/sound/pci/Kconfig
+++ b/sound/pci/Kconfig
@@ -259,7 +259,6 @@ config SND_CS5530
 config SND_CS5535AUDIO
        tristate "CS5535/CS5536 Audio"
-        depends on X86 && !X86_64
        select SND_PCM
        select SND_AC97_CODEC
        help
diff --git a/sound/pci/ali5451/ali5451.c b/sound/pci/ali5451/ali5451.c
index b458d208720b..aaf4da68969c 100644
--- a/sound/pci/ali5451/ali5451.c
+++ b/sound/pci/ali5451/ali5451.c
@@ -973,7 +973,7 @@ static void snd_ali_free_voice(struct snd_ali * codec,
        void *private_data;
        snd_ali_printk("free_voice: channel=%d\n",pvoice->number);
-        if (pvoice == NULL || !pvoice->use)
+        if (!pvoice->use)
                return;
        snd_ali_clear_voices(codec, pvoice->number, pvoice->number);
        spin_lock_irq(&codec->voice_alloc);
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index c9ad182e1b4b..e340792f6cb3 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -2674,6 +2674,7 @@ static struct pci_device_id azx_ids[] = {
        { PCI_DEVICE(0x10de, 0x044b), .driver_data = AZX_DRIVER_NVIDIA },
        { PCI_DEVICE(0x10de, 0x055c), .driver_data = AZX_DRIVER_NVIDIA },
        { PCI_DEVICE(0x10de, 0x055d), .driver_data = AZX_DRIVER_NVIDIA },
+        { PCI_DEVICE(0x10de, 0x0590), .driver_data = AZX_DRIVER_NVIDIA },
        { PCI_DEVICE(0x10de, 0x0774), .driver_data = AZX_DRIVER_NVIDIA },
        { PCI_DEVICE(0x10de, 0x0775), .driver_data = AZX_DRIVER_NVIDIA },
        { PCI_DEVICE(0x10de, 0x0776), .driver_data = AZX_DRIVER_NVIDIA },
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index c08ca660daba..ff20048504b6 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -965,6 +965,8 @@ static void alc_automute_pin(struct hda_codec *codec)
        unsigned int nid = spec->autocfg.hp_pins[0];
        int i;
+        if (!nid)
+                return;
        pincap = snd_hda_query_pin_caps(codec, nid);
        if (pincap & AC_PINCAP_TRIG_REQ) /* need trigger? */
                snd_hda_codec_read(codec, nid, 0, AC_VERB_SET_PIN_SENSE, 0);
@@ -12602,7 +12604,8 @@ static struct snd_pci_quirk alc268_cfg_tbl[] = {
        SND_PCI_QUIRK(0x1025, 0x015b, "Acer Aspire One",
                                                ALC268_ACER_ASPIRE_ONE),
        SND_PCI_QUIRK(0x1028, 0x0253, "Dell OEM", ALC268_DELL),
-        SND_PCI_QUIRK(0x1028, 0x02b0, "Dell Inspiron Mini9", ALC268_DELL),
+        SND_PCI_QUIRK_MASK(0x1028, 0xfff0, 0x02b0,
+                        "Dell Inspiron Mini9/Vostro A90", ALC268_DELL),
        /* almost compatible with toshiba but with optional digital outs;
         * auto-probing seems working fine
         */
@@ -17374,7 +17377,7 @@ static int alc662_auto_create_extra_out(struct hda_codec *codec, hda_nid_t pin,
 /* create playback/capture controls for input pins */
 #define alc662_auto_create_input_ctls \
-        alc880_auto_create_input_ctls
+        alc882_auto_create_input_ctls
 static void alc662_auto_set_output_and_unmute(struct hda_codec *codec,
                                              hda_nid_t nid, int pin_type,
diff --git a/sound/pci/via82xx.c b/sound/pci/via82xx.c
index 91683a349035..8a332d2f615c 100644
--- a/sound/pci/via82xx.c
+++ b/sound/pci/via82xx.c
@@ -386,6 +386,7 @@ struct via82xx {
        struct snd_pcm *pcms[2];
        struct snd_rawmidi *rmidi;
+        struct snd_kcontrol *dxs_controls[4];
        struct snd_ac97_bus *ac97_bus;
        struct snd_ac97 *ac97;
@@ -1216,9 +1217,9 @@ static int snd_via82xx_pcm_open(struct via82xx *chip, struct viadev *viadev,
 /*
- * open callback for playback on via686 and via823x DSX
+ * open callback for playback on via686
 */
-static int snd_via82xx_playback_open(struct snd_pcm_substream *substream)
+static int snd_via686_playback_open(struct snd_pcm_substream *substream)
 {
        struct via82xx *chip = snd_pcm_substream_chip(substream);
        struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number];
@@ -1230,6 +1231,32 @@ static int snd_via82xx_playback_open(struct snd_pcm_substream *substream)
 }
 /*
+ * open callback for playback on via823x DXS
+ */
+static int snd_via8233_playback_open(struct snd_pcm_substream *substream)
+{
+        struct via82xx *chip = snd_pcm_substream_chip(substream);
+        struct viadev *viadev;
+        unsigned int stream;
+        int err;
+        viadev = &chip->devs[chip->playback_devno + substream->number];
+        if ((err = snd_via82xx_pcm_open(chip, viadev, substream)) < 0)
+                return err;
+        stream = viadev->reg_offset / 0x10;
+        if (chip->dxs_controls[stream]) {
+                chip->playback_volume[stream][0] = 0;
+                chip->playback_volume[stream][1] = 0;
+                chip->dxs_controls[stream]->vd[0].access &=
+                        ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
+                snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE |
+                               SNDRV_CTL_EVENT_MASK_INFO,
+                               &chip->dxs_controls[stream]->id);
+        }
+        return 0;
+}
+/*
 * open callback for playback on via823x multi-channel
 */
 static int snd_via8233_multi_open(struct snd_pcm_substream *substream)
@@ -1302,10 +1329,26 @@ static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream)
        return 0;
 }
+static int snd_via8233_playback_close(struct snd_pcm_substream *substream)
+{
+        struct via82xx *chip = snd_pcm_substream_chip(substream);
+        struct viadev *viadev = substream->runtime->private_data;
+        unsigned int stream;
+        stream = viadev->reg_offset / 0x10;
+        if (chip->dxs_controls[stream]) {
+                chip->dxs_controls[stream]->vd[0].access |=
+                        SNDRV_CTL_ELEM_ACCESS_INACTIVE;
+                snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_INFO,
+                               &chip->dxs_controls[stream]->id);
+        }
+        return snd_via82xx_pcm_close(substream);
+}
 /* via686 playback callbacks */
 static struct snd_pcm_ops snd_via686_playback_ops = {
-        .open =         snd_via82xx_playback_open,
+        .open =         snd_via686_playback_open,
        .close =        snd_via82xx_pcm_close,
        .ioctl =        snd_pcm_lib_ioctl,
        .hw_params =    snd_via82xx_hw_params,
@@ -1331,8 +1374,8 @@ static struct snd_pcm_ops snd_via686_capture_ops = {
 /* via823x DSX playback callbacks */
 static struct snd_pcm_ops snd_via8233_playback_ops = {
-        .open =         snd_via82xx_playback_open,
+        .open =         snd_via8233_playback_open,
-        .close =        snd_via82xx_pcm_close,
+        .close =        snd_via8233_playback_close,
        .ioctl =        snd_pcm_lib_ioctl,
        .hw_params =    snd_via82xx_hw_params,
        .hw_free =      snd_via82xx_hw_free,
@@ -1709,8 +1752,9 @@ static struct snd_kcontrol_new snd_via8233_dxs_volume_control __devinitdata = {
        .device = 0,
        /* .subdevice set later */
        .name = "PCM Playback Volume",
-        .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
+        .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
-                   SNDRV_CTL_ELEM_ACCESS_TLV_READ),
+                  SNDRV_CTL_ELEM_ACCESS_TLV_READ |
+                  SNDRV_CTL_ELEM_ACCESS_INACTIVE,
        .info = snd_via8233_dxs_volume_info,
        .get = snd_via8233_dxs_volume_get,
        .put = snd_via8233_dxs_volume_put,
@@ -1948,6 +1992,7 @@ static int __devinit snd_via8233_init_misc(struct via82xx *chip)
                                err = snd_ctl_add(chip->card, kctl);
                                if (err < 0)
                                        return err;
+                                chip->dxs_controls[i] = kctl;
                        }
                }
        }
diff --git a/sound/pcmcia/pdaudiocf/pdaudiocf.c b/sound/pcmcia/pdaudiocf/pdaudiocf.c
index 7dea74b71cf1..64b859925c0b 100644
--- a/sound/pcmcia/pdaudiocf/pdaudiocf.c
+++ b/sound/pcmcia/pdaudiocf/pdaudiocf.c
@@ -217,20 +217,25 @@ static void snd_pdacf_detach(struct pcmcia_device *link)
 * configuration callback
 */
-#define CS_CHECK(fn, ret) \
-do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
 static int pdacf_config(struct pcmcia_device *link)
 {
        struct snd_pdacf *pdacf = link->priv;
-        int last_fn, last_ret;
+        int ret;
        snd_printdd(KERN_DEBUG "pdacf_config called\n");
        link->conf.ConfigIndex = 0x5;
-        CS_CHECK(RequestIO, pcmcia_request_io(link, &link->io));
+        ret = pcmcia_request_io(link, &link->io);
-        CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
+        if (ret)
-        CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
+                goto failed;
+        ret = pcmcia_request_irq(link, &link->irq);
+        if (ret)
+                goto failed;
+        ret = pcmcia_request_configuration(link, &link->conf);
+        if (ret)
+                goto failed;
        if (snd_pdacf_assign_resources(pdacf, link->io.BasePort1, link->irq.AssignedIRQ) < 0)
                goto failed;
@@ -238,8 +243,6 @@ static int pdacf_config(struct pcmcia_device *link)
        link->dev_node = &pdacf->node;
        return 0;
-cs_failed:
-        cs_error(link, last_fn, last_ret);
 failed:
        pcmcia_disable_device(link);
        return -ENODEV;
diff --git a/sound/pcmcia/vx/vxpocket.c b/sound/pcmcia/vx/vxpocket.c
index 7445cc8a47d3..1492744ad67f 100644
--- a/sound/pcmcia/vx/vxpocket.c
+++ b/sound/pcmcia/vx/vxpocket.c
@@ -213,14 +213,11 @@ static int snd_vxpocket_assign_resources(struct vx_core *chip, int port, int irq
 * configuration callback
 */
-#define CS_CHECK(fn, ret) \
-do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
 static int vxpocket_config(struct pcmcia_device *link)
 {
        struct vx_core *chip = link->priv;
        struct snd_vxpocket *vxp = (struct snd_vxpocket *)chip;
-        int last_fn, last_ret;
+        int ret;
        snd_printdd(KERN_DEBUG "vxpocket_config called\n");
@@ -235,9 +232,17 @@ static int vxpocket_config(struct pcmcia_device *link)
                strcpy(chip->card->driver, vxp440_hw.name);
        }
-        CS_CHECK(RequestIO, pcmcia_request_io(link, &link->io));
+        ret = pcmcia_request_io(link, &link->io);
-        CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
+        if (ret)
-        CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
+                goto failed;
+        ret = pcmcia_request_irq(link, &link->irq);
+        if (ret)
+                goto failed;
+        ret = pcmcia_request_configuration(link, &link->conf);
+        if (ret)
+                goto failed;
        chip->dev = &handle_to_dev(link);
        snd_card_set_dev(chip->card, chip->dev);
@@ -248,8 +253,6 @@ static int vxpocket_config(struct pcmcia_device *link)
        link->dev_node = &vxp->node;
        return 0;
-cs_failed:
-        cs_error(link, last_fn, last_ret);
 failed:
        pcmcia_disable_device(link);
        return -ENODEV;
diff --git a/sound/soc/omap/Kconfig b/sound/soc/omap/Kconfig
index 2dee9839be86..653a362425df 100644
--- a/sound/soc/omap/Kconfig
+++ b/sound/soc/omap/Kconfig
@@ -21,7 +21,18 @@ config SND_OMAP_SOC_AMS_DELTA
        select SND_OMAP_SOC_MCBSP
        select SND_SOC_CX20442
        help
-          Say Y if you want to add support for SoC audio on Amstrad Delta.
+          Say Y  if you want to add support  for SoC audio device  connected to
+          a handset and a speakerphone found on Amstrad E3 (Delta) videophone.
+          Note that in order to get those devices fully supported,  you have to
+          build  the kernel  with  standard  serial port  driver  included  and
+          configured for at least 4 ports.  Then, from userspace, you must load
+          a line discipline #19 on the modem (ttyS3) serial line.  The simplest
+          way to achieve this is to install util-linux-ng  and use the included
+          ldattach  utility.  This  can be  started  automatically  from  udev,
+          a simple rule like this one should do the trick (it does for me):
+                ACTION=="add", KERNEL=="controlC0", \
+                                RUN+="/usr/sbin/ldattach 19 /dev/ttyS3"
 config SND_OMAP_SOC_OSK5912
        tristate "SoC Audio support for omap osk5912"
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 7ff04ad2a97e..0a1b2f64bbee 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -834,6 +834,9 @@ EXPORT_SYMBOL_GPL(snd_soc_resume_device);
 #define soc_resume      NULL
 #endif
+static struct snd_soc_dai_ops null_dai_ops = {
+};
 static void snd_soc_instantiate_card(struct snd_soc_card *card)
 {
        struct platform_device *pdev = container_of(card->dev,
@@ -877,6 +880,11 @@ static void snd_soc_instantiate_card(struct snd_soc_card *card)
                        ac97 = 1;
        }
+        for (i = 0; i < card->num_links; i++) {
+                if (!card->dai_link[i].codec_dai->ops)
+                        card->dai_link[i].codec_dai->ops = &null_dai_ops;
+        }
        /* If we have AC97 in the system then don't wait for the
         * codec.  This will need revisiting if we have to handle
         * systems with mixed AC97 and non-AC97 parts.  Only check for
@@ -2329,9 +2337,6 @@ static int snd_soc_unregister_card(struct snd_soc_card *card)
        return 0;
 }
-static struct snd_soc_dai_ops null_dai_ops = {
-};
 /**
 * snd_soc_register_dai - Register a DAI with the ASoC core
 *
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index 8de6f9dec4a2..d89f6dc00908 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -2072,9 +2072,9 @@ int snd_soc_dapm_stream_event(struct snd_soc_codec *codec,
                        }
                }
        }
-        mutex_unlock(&codec->mutex);
        dapm_power_widgets(codec, event);
+        mutex_unlock(&codec->mutex);
        dump_dapm(codec, __func__);
        return 0;
 }
diff --git a/sound/usb/caiaq/audio.c b/sound/usb/caiaq/audio.c
index 121af0644fd9..86b2c3b92df5 100644
--- a/sound/usb/caiaq/audio.c
+++ b/sound/usb/caiaq/audio.c
@@ -62,10 +62,14 @@ static void
 activate_substream(struct snd_usb_caiaqdev *dev,
                   struct snd_pcm_substream *sub)
 {
+        spin_lock(&dev->spinlock);
        if (sub->stream == SNDRV_PCM_STREAM_PLAYBACK)
                dev->sub_playback[sub->number] = sub;
        else
                dev->sub_capture[sub->number] = sub;
+        spin_unlock(&dev->spinlock);
 }
 static void
@@ -269,16 +273,22 @@ snd_usb_caiaq_pcm_pointer(struct snd_pcm_substream *sub)
 {
        int index = sub->number;
        struct snd_usb_caiaqdev *dev = snd_pcm_substream_chip(sub);
+        snd_pcm_uframes_t ptr;
+        spin_lock(&dev->spinlock);
        if (dev->input_panic || dev->output_panic)
-                return SNDRV_PCM_POS_XRUN;
+                ptr = SNDRV_PCM_POS_XRUN;
        if (sub->stream == SNDRV_PCM_STREAM_PLAYBACK)
-                return bytes_to_frames(sub->runtime,
+                ptr = bytes_to_frames(sub->runtime,
                                        dev->audio_out_buf_pos[index]);
        else
-                return bytes_to_frames(sub->runtime,
+                ptr = bytes_to_frames(sub->runtime,
                                        dev->audio_in_buf_pos[index]);
+        spin_unlock(&dev->spinlock);
+        return ptr;
 }
 /* operators for both playback and capture */
diff --git a/sound/usb/caiaq/device.c b/sound/usb/caiaq/device.c
index 83e6c1312d47..a3f02dd97440 100644
--- a/sound/usb/caiaq/device.c
+++ b/sound/usb/caiaq/device.c
@@ -35,7 +35,7 @@
 #include "input.h"
 MODULE_AUTHOR("Daniel Mack <daniel@caiaq.de>");
-MODULE_DESCRIPTION("caiaq USB audio, version 1.3.19");
+MODULE_DESCRIPTION("caiaq USB audio, version 1.3.20");
 MODULE_LICENSE("GPL");
 MODULE_SUPPORTED_DEVICE("{{Native Instruments, RigKontrol2},"
                         "{Native Instruments, RigKontrol3},"
diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 742a32eee8fc..7e190d522cd5 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -177,8 +177,7 @@ endif
 # Include saner warnings here, which can catch bugs:
 #
-EXTRA_WARNINGS := -Wcast-align
+EXTRA_WARNINGS := -Wformat
-EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wformat
 EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wformat-security
 EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wformat-y2k
 EXTRA_WARNINGS := $(EXTRA_WARNINGS) -Wshadow
@@ -422,7 +421,11 @@ ifeq ($(uname_S),Darwin)
        PTHREAD_LIBS =
 endif
-ifneq ($(shell sh -c "(echo '\#include <libelf.h>'; echo 'int main(void) { Elf * elf = elf_begin(0, ELF_C_READ_MMAP, 0); return (long)elf; }') | $(CC) -x c - $(ALL_CFLAGS) -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -o /dev/null $(ALL_LDFLAGS) > /dev/null 2>&1 && echo y"), y)
+ifeq ($(shell sh -c "(echo '\#include <libelf.h>'; echo 'int main(void) { Elf * elf = elf_begin(0, ELF_C_READ, 0); return (long)elf; }') | $(CC) -x c - $(ALL_CFLAGS) -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -o /dev/null $(ALL_LDFLAGS) > /dev/null 2>&1 && echo y"), y)
+        ifneq ($(shell sh -c "(echo '\#include <libelf.h>'; echo 'int main(void) { Elf * elf = elf_begin(0, ELF_C_READ_MMAP, 0); return (long)elf; }') | $(CC) -x c - $(ALL_CFLAGS) -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -o /dev/null $(ALL_LDFLAGS) > /dev/null 2>&1 && echo y"), y)
+                BASIC_CFLAGS += -DLIBELF_NO_MMAP
+        endif
+else
        msg := $(error No libelf.h/libelf found, please install libelf-dev/elfutils-libelf-devel and glibc-dev[el]);
 endif
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 47ea0609a760..226f44a2357d 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -413,7 +413,7 @@ static int dso__synthesize_plt_symbols(struct  dso *self, int v)
        if (fd < 0)
                goto out;
-        elf = elf_begin(fd, ELF_C_READ_MMAP, NULL);
+        elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL);
        if (elf == NULL)
                goto out_close;
@@ -533,7 +533,7 @@ static int dso__load_sym(struct dso *self, int fd, const char *name,
        Elf *elf;
        int nr = 0, kernel = !strcmp("[kernel]", self->name);
-        elf = elf_begin(fd, ELF_C_READ_MMAP, NULL);
+        elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL);
        if (elf == NULL) {
                if (v)
                        fprintf(stderr, "%s: cannot read %s ELF file.\n",
@@ -675,7 +675,7 @@ static char *dso__read_build_id(struct dso *self, int v)
        if (fd < 0)
                goto out;
-        elf = elf_begin(fd, ELF_C_READ_MMAP, NULL);
+        elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL);
        if (elf == NULL) {
                if (v)
                        fprintf(stderr, "%s: cannot read %s ELF file.\n",
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 6e8490716408..829da9edba64 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -27,6 +27,16 @@ static inline char *bfd_demangle(void __used *v, const char __used *c,
 #endif
 #endif
+/*
+ * libelf 0.8.x and earlier do not support ELF_C_READ_MMAP;
+ * for newer versions we can use mmap to reduce memory usage:
+ */
+#ifdef LIBELF_NO_MMAP
+# define PERF_ELF_C_READ_MMAP ELF_C_READ
+#else
+# define PERF_ELF_C_READ_MMAP ELF_C_READ_MMAP
+#endif
 #ifndef DMGL_PARAMS
 #define DMGL_PARAMS      (1 << 0)       /* Include function args */
 #define DMGL_ANSI        (1 << 1)       /* Include const, volatile, etc */