52 files changed, 1247 insertions, 418 deletions

diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h
index 9e52b0626b39..f5a3b838ddb0 100644
--- a/include/linux/buffer_head.h
+++ b/include/linux/buffer_head.h
@@ -198,7 +198,8 @@ extern int buffer_heads_over_limit;
  * Generic address_space_operations implementations for buffer_head-backed
  * address_spaces.
  */
-void block_invalidatepage(struct page *page, unsigned long offset);
+void block_invalidatepage(struct page *page, unsigned int offset,
+                          unsigned int length);
 int block_write_full_page(struct page *page, get_block_t *get_block,
                                 struct writeback_control *wbc);
 int block_write_full_page_endio(struct page *page, get_block_t *get_block,
diff --git a/include/linux/console.h b/include/linux/console.h
index 73bab0f58af5..7571a16bd653 100644
--- a/include/linux/console.h
+++ b/include/linux/console.h
@@ -75,10 +75,7 @@ extern const struct consw newport_con;	/* SGI Newport console  */
 extern const struct consw prom_con;     /* SPARC PROM console */
 
 int con_is_bound(const struct consw *csw);
-int register_con_driver(const struct consw *csw, int first, int last);
-int unregister_con_driver(const struct consw *csw);
 int do_unregister_con_driver(const struct consw *csw);
-int take_over_console(const struct consw *sw, int first, int last, int deflt);
 int do_take_over_console(const struct consw *sw, int first, int last, int deflt);
 void give_up_console(const struct consw *sw);
 #ifdef CONFIG_HW_CONSOLE
diff --git a/include/linux/context_tracking.h b/include/linux/context_tracking.h
index 365f4a61bf04..fc09d7b0dacf 100644
--- a/include/linux/context_tracking.h
+++ b/include/linux/context_tracking.h
@@ -3,6 +3,7 @@
 
 #include <linux/sched.h>
 #include <linux/percpu.h>
+#include <linux/vtime.h>
 #include <asm/ptrace.h>
 
 struct context_tracking {
@@ -19,6 +20,26 @@ struct context_tracking {
         } state;
 };
 
+static inline void __guest_enter(void)
+{
+        /*
+         * This is running in ioctl context so we can avoid
+         * the call to vtime_account() with its unnecessary idle check.
+         */
+        vtime_account_system(current);
+        current->flags |= PF_VCPU;
+}
+
+static inline void __guest_exit(void)
+{
+        /*
+         * This is running in ioctl context so we can avoid
+         * the call to vtime_account() with its unnecessary idle check.
+         */
+        vtime_account_system(current);
+        current->flags &= ~PF_VCPU;
+}
+
 #ifdef CONFIG_CONTEXT_TRACKING
 DECLARE_PER_CPU(struct context_tracking, context_tracking);
 
@@ -35,6 +56,9 @@ static inline bool context_tracking_active(void)
 extern void user_enter(void);
 extern void user_exit(void);
 
+extern void guest_enter(void);
+extern void guest_exit(void);
+
 static inline enum ctx_state exception_enter(void)
 {
         enum ctx_state prev_ctx;
@@ -57,6 +81,17 @@ extern void context_tracking_task_switch(struct task_struct *prev,
 static inline bool context_tracking_in_user(void) { return false; }
 static inline void user_enter(void) { }
 static inline void user_exit(void) { }
+
+static inline void guest_enter(void)
+{
+        __guest_enter();
+}
+
+static inline void guest_exit(void)
+{
+        __guest_exit();
+}
+
 static inline enum ctx_state exception_enter(void) { return 0; }
 static inline void exception_exit(enum ctx_state prev_ctx) { }
 static inline void context_tracking_task_switch(struct task_struct *prev,
diff --git a/include/linux/debugfs.h b/include/linux/debugfs.h
index 63f2465807d4..d68b4ea7343c 100644
--- a/include/linux/debugfs.h
+++ b/include/linux/debugfs.h
@@ -79,6 +79,8 @@ struct dentry *debugfs_create_x64(const char *name, umode_t mode,
                                   struct dentry *parent, u64 *value);
 struct dentry *debugfs_create_size_t(const char *name, umode_t mode,
                                      struct dentry *parent, size_t *value);
+struct dentry *debugfs_create_atomic_t(const char *name, umode_t mode,
+                                     struct dentry *parent, atomic_t *value);
 struct dentry *debugfs_create_bool(const char *name, umode_t mode,
                                   struct dentry *parent, u32 *value);
 
diff --git a/include/linux/device.h b/include/linux/device.h
index c0a126125325..9d4835a8f8b8 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -80,6 +80,7 @@ extern void bus_remove_file(struct bus_type *, struct bus_attribute *);
  *              bus-specific setup
  * @p:          The private data of the driver core, only the driver core can
  *              touch this.
+ * @lock_key:   Lock class key for use by the lock validator
  *
  * A bus is a channel between the processor and one or more devices. For the
  * purposes of the device model, all devices are connected via a bus, even if
@@ -635,6 +636,7 @@ struct acpi_dev_node {
  *              segment limitations.
  * @dma_pools:  Dma pools (if dma'ble device).
  * @dma_mem:    Internal for coherent mem override.
+ * @cma_area:   Contiguous memory area for dma allocations
  * @archdata:   For arch-specific additions.
  * @of_node:    Associated device tree node.
  * @acpi_node:  Associated ACPI device node.
@@ -648,6 +650,7 @@ struct acpi_dev_node {
  * @release:    Callback to free the device after all references have
  *              gone away. This should be set by the allocator of the
  *              device (i.e. the bus driver that discovered the device).
+ * @iommu_group: IOMMU group the device belongs to.
  *
  * At the lowest level, every device in a Linux system is represented by an
  * instance of struct device. The device structure contains the information
diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h
index df6fab82f87e..383d5e39b280 100644
--- a/include/linux/f2fs_fs.h
+++ b/include/linux/f2fs_fs.h
@@ -20,8 +20,8 @@
 #define F2FS_BLKSIZE                    4096    /* support only 4KB block */
 #define F2FS_MAX_EXTENSION              64      /* # of extension entries */
 
-#define NULL_ADDR               0x0U
-#define NEW_ADDR                -1U
+#define NULL_ADDR               ((block_t)0)    /* used as block_t addresses */
+#define NEW_ADDR                ((block_t)-1)   /* used as block_t addresses */
 
 #define F2FS_ROOT_INO(sbi)      (sbi->root_ino_num)
 #define F2FS_NODE_INO(sbi)      (sbi->node_ino_num)
diff --git a/include/linux/firmware.h b/include/linux/firmware.h
index e4279fedb93a..e154c1005cd1 100644
--- a/include/linux/firmware.h
+++ b/include/linux/firmware.h
@@ -47,8 +47,6 @@ int request_firmware_nowait(
         void (*cont)(const struct firmware *fw, void *context));
 
 void release_firmware(const struct firmware *fw);
-int cache_firmware(const char *name);
-int uncache_firmware(const char *name);
 #else
 static inline int request_firmware(const struct firmware **fw,
                                    const char *name,
@@ -68,15 +66,6 @@ static inline void release_firmware(const struct firmware *fw)
 {
 }
 
-static inline int cache_firmware(const char *name)
-{
-        return -ENOENT;
-}
-
-static inline int uncache_firmware(const char *name)
-{
-        return -EINVAL;
-}
 #endif
 
 #endif
diff --git a/include/linux/fmc-sdb.h b/include/linux/fmc-sdb.h
new file mode 100644
index 000000000000..1974317a9b3d
--- /dev/null
+++ b/include/linux/fmc-sdb.h
@@ -0,0 +1,36 @@
+/*
+ * This file is separate from sdb.h, because I want that one to remain
+ * unchanged (as far as possible) from the official sdb distribution
+ *
+ * This file and associated functionality are a playground for me to
+ * understand stuff which will later be implemented in more generic places.
+ */
+#include <linux/sdb.h>
+
+/* This is the union of all currently defined types */
+union sdb_record {
+        struct sdb_interconnect ic;
+        struct sdb_device dev;
+        struct sdb_bridge bridge;
+        struct sdb_integration integr;
+        struct sdb_empty empty;
+};
+
+struct fmc_device;
+
+/* Every sdb table is turned into this structure */
+struct sdb_array {
+        int len;
+        int level;
+        unsigned long baseaddr;
+        struct fmc_device *fmc;         /* the device that hosts it */
+        struct sdb_array *parent;       /* NULL at root */
+        union sdb_record *record;       /* copies of the struct */
+        struct sdb_array **subtree;     /* only valid for bridge items */
+};
+
+extern int fmc_scan_sdb_tree(struct fmc_device *fmc, unsigned long address);
+extern void fmc_show_sdb_tree(const struct fmc_device *fmc);
+extern signed long fmc_find_sdb_device(struct sdb_array *tree, uint64_t vendor,
+                                       uint32_t device, unsigned long *sz);
+extern int fmc_free_sdb_tree(struct fmc_device *fmc);
diff --git a/include/linux/fmc.h b/include/linux/fmc.h
new file mode 100644
index 000000000000..a5f0aa5c2a8d
--- /dev/null
+++ b/include/linux/fmc.h
@@ -0,0 +1,237 @@
+/*
+ * Copyright (C) 2012 CERN (www.cern.ch)
+ * Author: Alessandro Rubini <rubini@gnudd.com>
+ *
+ * Released according to the GNU GPL, version 2 or any later version.
+ *
+ * This work is part of the White Rabbit project, a research effort led
+ * by CERN, the European Institute for Nuclear Research.
+ */
+#ifndef __LINUX_FMC_H__
+#define __LINUX_FMC_H__
+#include <linux/types.h>
+#include <linux/moduleparam.h>
+#include <linux/device.h>
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+
+struct fmc_device;
+struct fmc_driver;
+
+/*
+ * This bus abstraction is developed separately from drivers, so we need
+ * to check the version of the data structures we receive.
+ */
+
+#define FMC_MAJOR       3
+#define FMC_MINOR       0
+#define FMC_VERSION     ((FMC_MAJOR << 16) | FMC_MINOR)
+#define __FMC_MAJOR(x)  ((x) >> 16)
+#define __FMC_MINOR(x)  ((x) & 0xffff)
+
+/*
+ * The device identification, as defined by the IPMI FRU (Field Replaceable
+ * Unit) includes four different strings to describe the device. Here we
+ * only match the "Board Manufacturer" and the "Board Product Name",
+ * ignoring the "Board Serial Number" and "Board Part Number". All 4 are
+ * expected to be strings, so they are treated as zero-terminated C strings.
+ * Unspecified string (NULL) means "any", so if both are unspecified this
+ * is a catch-all driver. So null entries are allowed and we use array
+ * and length. This is unlike pci and usb that use null-terminated arrays
+ */
+struct fmc_fru_id {
+        char *manufacturer;
+        char *product_name;
+};
+
+/*
+ * If the FPGA is already programmed (think Etherbone or the second
+ * SVEC slot), we can match on SDB devices in the memory image. This
+ * match uses an array of devices that must all be present, and the
+ * match is based on vendor and device only. Further checks are expected
+ * to happen in the probe function. Zero means "any" and catch-all is allowed.
+ */
+struct fmc_sdb_one_id {
+        uint64_t vendor;
+        uint32_t device;
+};
+struct fmc_sdb_id {
+        struct fmc_sdb_one_id *cores;
+        int cores_nr;
+};
+
+struct fmc_device_id {
+        struct fmc_fru_id *fru_id;
+        int fru_id_nr;
+        struct fmc_sdb_id *sdb_id;
+        int sdb_id_nr;
+};
+
+/* This sizes the module_param_array used by generic module parameters */
+#define FMC_MAX_CARDS 32
+
+/* The driver is a pretty simple thing */
+struct fmc_driver {
+        unsigned long version;
+        struct device_driver driver;
+        int (*probe)(struct fmc_device *);
+        int (*remove)(struct fmc_device *);
+        const struct fmc_device_id id_table;
+        /* What follows is for generic module parameters */
+        int busid_n;
+        int busid_val[FMC_MAX_CARDS];
+        int gw_n;
+        char *gw_val[FMC_MAX_CARDS];
+};
+#define to_fmc_driver(x) container_of((x), struct fmc_driver, driver)
+
+/* These are the generic parameters, that drivers may instantiate */
+#define FMC_PARAM_BUSID(_d) \
+    module_param_array_named(busid, _d.busid_val, int, &_d.busid_n, 0444)
+#define FMC_PARAM_GATEWARE(_d) \
+    module_param_array_named(gateware, _d.gw_val, charp, &_d.gw_n, 0444)
+
+/*
+ * Drivers may need to configure gpio pins in the carrier. To read input
+ * (a very uncommon operation, and definitely not in the hot paths), just
+ * configure one gpio only and get 0 or 1 as retval of the config method
+ */
+struct fmc_gpio {
+        char *carrier_name; /* name or NULL for virtual pins */
+        int gpio;
+        int _gpio;      /* internal use by the carrier */
+        int mode;       /* GPIOF_DIR_OUT etc, from <linux/gpio.h> */
+        int irqmode;    /* IRQF_TRIGGER_LOW and so on */
+};
+
+/* The numbering of gpio pins allows access to raw pins or virtual roles */
+#define FMC_GPIO_RAW(x)         (x)             /* 4096 of them */
+#define __FMC_GPIO_IS_RAW(x)    ((x) < 0x1000)
+#define FMC_GPIO_IRQ(x)         ((x) + 0x1000)  /*  256 of them */
+#define FMC_GPIO_LED(x)         ((x) + 0x1100)  /*  256 of them */
+#define FMC_GPIO_KEY(x)         ((x) + 0x1200)  /*  256 of them */
+#define FMC_GPIO_TP(x)          ((x) + 0x1300)  /*  256 of them */
+#define FMC_GPIO_USER(x)        ((x) + 0x1400)  /*  256 of them */
+/* We may add SCL and SDA, or other roles if the need arises */
+
+/* GPIOF_DIR_IN etc are missing before 3.0. copy from <linux/gpio.h> */
+#ifndef GPIOF_DIR_IN
+#  define GPIOF_DIR_OUT   (0 << 0)
+#  define GPIOF_DIR_IN    (1 << 0)
+#  define GPIOF_INIT_LOW  (0 << 1)
+#  define GPIOF_INIT_HIGH (1 << 1)
+#endif
+
+/*
+ * The operations are offered by each carrier and should make driver
+ * design completely independent of the carrier. Named GPIO pins may be
+ * the exception.
+ */
+struct fmc_operations {
+        uint32_t (*read32)(struct fmc_device *fmc, int offset);
+        void (*write32)(struct fmc_device *fmc, uint32_t value, int offset);
+        int (*validate)(struct fmc_device *fmc, struct fmc_driver *drv);
+        int (*reprogram)(struct fmc_device *f, struct fmc_driver *d, char *gw);
+        int (*irq_request)(struct fmc_device *fmc, irq_handler_t h,
+                           char *name, int flags);
+        void (*irq_ack)(struct fmc_device *fmc);
+        int (*irq_free)(struct fmc_device *fmc);
+        int (*gpio_config)(struct fmc_device *fmc, struct fmc_gpio *gpio,
+                           int ngpio);
+        int (*read_ee)(struct fmc_device *fmc, int pos, void *d, int l);
+        int (*write_ee)(struct fmc_device *fmc, int pos, const void *d, int l);
+};
+
+/* Prefer this helper rather than calling of fmc->reprogram directly */
+extern int fmc_reprogram(struct fmc_device *f, struct fmc_driver *d, char *gw,
+                     int sdb_entry);
+
+/*
+ * The device reports all information needed to access hw.
+ *
+ * If we have eeprom_len and not contents, the core reads it.
+ * Then, parsing of identifiers is done by the core which fills fmc_fru_id..
+ * Similarly a device that must be matched based on SDB cores must
+ * fill the entry point and the core will scan the bus (FIXME: sdb match)
+ */
+struct fmc_device {
+        unsigned long version;
+        unsigned long flags;
+        struct module *owner;           /* char device must pin it */
+        struct fmc_fru_id id;           /* for EEPROM-based match */
+        struct fmc_operations *op;      /* carrier-provided */
+        int irq;                        /* according to host bus. 0 == none */
+        int eeprom_len;                 /* Usually 8kB, may be less */
+        int eeprom_addr;                /* 0x50, 0x52 etc */
+        uint8_t *eeprom;                /* Full contents or leading part */
+        char *carrier_name;             /* "SPEC" or similar, for special use */
+        void *carrier_data;             /* "struct spec *" or equivalent */
+        __iomem void *fpga_base;        /* May be NULL (Etherbone) */
+        __iomem void *slot_base;        /* Set by the driver */
+        struct fmc_device **devarray;   /* Allocated by the bus */
+        int slot_id;                    /* Index in the slot array */
+        int nr_slots;                   /* Number of slots in this carrier */
+        unsigned long memlen;           /* Used for the char device */
+        struct device dev;              /* For Linux use */
+        struct device *hwdev;           /* The underlying hardware device */
+        unsigned long sdbfs_entry;
+        struct sdb_array *sdb;
+        uint32_t device_id;             /* Filled by the device */
+        char *mezzanine_name;           /* Defaults to ``fmc'' */
+        void *mezzanine_data;
+};
+#define to_fmc_device(x) container_of((x), struct fmc_device, dev)
+
+#define FMC_DEVICE_HAS_GOLDEN           1
+#define FMC_DEVICE_HAS_CUSTOM           2
+#define FMC_DEVICE_NO_MEZZANINE         4
+#define FMC_DEVICE_MATCH_SDB            8 /* fmc-core must scan sdb in fpga */
+
+/*
+ * If fpga_base can be used, the carrier offers no readl/writel methods, and
+ * this expands to a single, fast, I/O access.
+ */
+static inline uint32_t fmc_readl(struct fmc_device *fmc, int offset)
+{
+        if (unlikely(fmc->op->read32))
+                return fmc->op->read32(fmc, offset);
+        return readl(fmc->fpga_base + offset);
+}
+static inline void fmc_writel(struct fmc_device *fmc, uint32_t val, int off)
+{
+        if (unlikely(fmc->op->write32))
+                fmc->op->write32(fmc, val, off);
+        else
+                writel(val, fmc->fpga_base + off);
+}
+
+/* pci-like naming */
+static inline void *fmc_get_drvdata(const struct fmc_device *fmc)
+{
+        return dev_get_drvdata(&fmc->dev);
+}
+
+static inline void fmc_set_drvdata(struct fmc_device *fmc, void *data)
+{
+        dev_set_drvdata(&fmc->dev, data);
+}
+
+/* The 4 access points */
+extern int fmc_driver_register(struct fmc_driver *drv);
+extern void fmc_driver_unregister(struct fmc_driver *drv);
+extern int fmc_device_register(struct fmc_device *tdev);
+extern void fmc_device_unregister(struct fmc_device *tdev);
+
+/* Two more for device sets, all driven by the same FPGA */
+extern int fmc_device_register_n(struct fmc_device **devs, int n);
+extern void fmc_device_unregister_n(struct fmc_device **devs, int n);
+
+/* Internal cross-calls between files; not exported to other modules */
+extern int fmc_match(struct device *dev, struct device_driver *drv);
+extern int fmc_fill_id_info(struct fmc_device *fmc);
+extern void fmc_free_id_info(struct fmc_device *fmc);
+extern void fmc_dump_eeprom(const struct fmc_device *fmc);
+extern void fmc_dump_sdb(const struct fmc_device *fmc);
+
+#endif /* __LINUX_FMC_H__ */
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 43db02e9c9fa..f8a5240541b7 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -364,7 +364,7 @@ struct address_space_operations {
 
         /* Unfortunately this kludge is needed for FIBMAP. Don't use it */
         sector_t (*bmap)(struct address_space *, sector_t);
-        void (*invalidatepage) (struct page *, unsigned long);
+        void (*invalidatepage) (struct page *, unsigned int, unsigned int);
         int (*releasepage) (struct page *, gfp_t);
         void (*freepage)(struct page *);
         ssize_t (*direct_IO)(int, struct kiocb *, const struct iovec *iov,
@@ -1506,6 +1506,11 @@ int fiemap_check_flags(struct fiemap_extent_info *fieinfo, u32 fs_flags);
  * to have different dirent layouts depending on the binary type.
  */
 typedef int (*filldir_t)(void *, const char *, int, loff_t, u64, unsigned);
+struct dir_context {
+        const filldir_t actor;
+        loff_t pos;
+};
+
 struct block_device_operations;
 
 /* These macros are for out of kernel modules to test that
@@ -1521,7 +1526,7 @@ struct file_operations {
         ssize_t (*write) (struct file *, const char __user *, size_t, loff_t *);
         ssize_t (*aio_read) (struct kiocb *, const struct iovec *, unsigned long, loff_t);
         ssize_t (*aio_write) (struct kiocb *, const struct iovec *, unsigned long, loff_t);
-        int (*readdir) (struct file *, void *, filldir_t);
+        int (*iterate) (struct file *, struct dir_context *);
         unsigned int (*poll) (struct file *, struct poll_table_struct *);
         long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long);
         long (*compat_ioctl) (struct file *, unsigned int, unsigned long);
@@ -2414,8 +2419,6 @@ extern ssize_t generic_file_splice_write(struct pipe_inode_info *,
                 struct file *, loff_t *, size_t, unsigned int);
 extern ssize_t generic_splice_sendpage(struct pipe_inode_info *pipe,
                 struct file *out, loff_t *, size_t len, unsigned int flags);
-extern long do_splice_direct(struct file *in, loff_t *ppos, struct file *out,
-                size_t len, unsigned int flags);
 
 extern void
 file_ra_state_init(struct file_ra_state *ra, struct address_space *mapping);
@@ -2496,6 +2499,7 @@ loff_t inode_get_bytes(struct inode *inode);
 void inode_set_bytes(struct inode *inode, loff_t bytes);
 
 extern int vfs_readdir(struct file *, filldir_t, void *);
+extern int iterate_dir(struct file *, struct dir_context *);
 
 extern int vfs_stat(const char __user *, struct kstat *);
 extern int vfs_lstat(const char __user *, struct kstat *);
@@ -2526,7 +2530,7 @@ extern void iterate_supers_type(struct file_system_type *,
 extern int dcache_dir_open(struct inode *, struct file *);
 extern int dcache_dir_close(struct inode *, struct file *);
 extern loff_t dcache_dir_lseek(struct file *, loff_t, int);
-extern int dcache_readdir(struct file *, void *, filldir_t);
+extern int dcache_readdir(struct file *, struct dir_context *);
 extern int simple_setattr(struct dentry *, struct iattr *);
 extern int simple_getattr(struct vfsmount *, struct dentry *, struct kstat *);
 extern int simple_statfs(struct dentry *, struct kstatfs *);
@@ -2690,4 +2694,41 @@ static inline void inode_has_no_xattr(struct inode *inode)
                 inode->i_flags |= S_NOSEC;
 }
 
+static inline bool dir_emit(struct dir_context *ctx,
+                            const char *name, int namelen,
+                            u64 ino, unsigned type)
+{
+        return ctx->actor(ctx, name, namelen, ctx->pos, ino, type) == 0;
+}
+static inline bool dir_emit_dot(struct file *file, struct dir_context *ctx)
+{
+        return ctx->actor(ctx, ".", 1, ctx->pos,
+                          file->f_path.dentry->d_inode->i_ino, DT_DIR) == 0;
+}
+static inline bool dir_emit_dotdot(struct file *file, struct dir_context *ctx)
+{
+        return ctx->actor(ctx, "..", 2, ctx->pos,
+                          parent_ino(file->f_path.dentry), DT_DIR) == 0;
+}
+static inline bool dir_emit_dots(struct file *file, struct dir_context *ctx)
+{
+        if (ctx->pos == 0) {
+                if (!dir_emit_dot(file, ctx))
+                        return false;
+                ctx->pos = 1;
+        }
+        if (ctx->pos == 1) {
+                if (!dir_emit_dotdot(file, ctx))
+                        return false;
+                ctx->pos = 2;
+        }
+        return true;
+}
+static inline bool dir_relax(struct inode *inode)
+{
+        mutex_unlock(&inode->i_mutex);
+        mutex_lock(&inode->i_mutex);
+        return !IS_DEADDIR(inode);
+}
+
 #endif /* _LINUX_FS_H */
diff --git a/include/linux/fscache-cache.h b/include/linux/fscache-cache.h
index 5dfa0aa216b6..a9ff9a36b86d 100644
--- a/include/linux/fscache-cache.h
+++ b/include/linux/fscache-cache.h
@@ -97,7 +97,8 @@ struct fscache_operation {
 #define FSCACHE_OP_WAITING      4       /* cleared when op is woken */
 #define FSCACHE_OP_EXCLUSIVE    5       /* exclusive op, other ops must wait */
 #define FSCACHE_OP_DEC_READ_CNT 6       /* decrement object->n_reads on destruction */
-#define FSCACHE_OP_KEEP_FLAGS   0x0070  /* flags to keep when repurposing an op */
+#define FSCACHE_OP_UNUSE_COOKIE 7       /* call fscache_unuse_cookie() on completion */
+#define FSCACHE_OP_KEEP_FLAGS   0x00f0  /* flags to keep when repurposing an op */
 
         enum fscache_operation_state state;
         atomic_t                usage;
@@ -150,7 +151,7 @@ struct fscache_retrieval {
         void                    *context;       /* netfs read context (pinned) */
         struct list_head        to_do;          /* list of things to be done by the backend */
         unsigned long           start_time;     /* time at which retrieval started */
-        unsigned                n_pages;        /* number of pages to be retrieved */
+        atomic_t                n_pages;        /* number of pages to be retrieved */
 };
 
 typedef int (*fscache_page_retrieval_func_t)(struct fscache_retrieval *op,
@@ -194,15 +195,14 @@ static inline void fscache_enqueue_retrieval(struct fscache_retrieval *op)
 static inline void fscache_retrieval_complete(struct fscache_retrieval *op,
                                               int n_pages)
 {
-        op->n_pages -= n_pages;
-        if (op->n_pages <= 0)
+        atomic_sub(n_pages, &op->n_pages);
+        if (atomic_read(&op->n_pages) <= 0)
                 fscache_op_complete(&op->op, true);
 }
 
 /**
  * fscache_put_retrieval - Drop a reference to a retrieval operation
  * @op: The retrieval operation affected
- * @n_pages: The number of pages to account for
  *
  * Drop a reference to a retrieval operation.
  */
@@ -314,6 +314,7 @@ struct fscache_cache_ops {
 struct fscache_cookie {
         atomic_t                        usage;          /* number of users of this cookie */
         atomic_t                        n_children;     /* number of children of this cookie */
+        atomic_t                        n_active;       /* number of active users of netfs ptrs */
         spinlock_t                      lock;
         spinlock_t                      stores_lock;    /* lock on page store tree */
         struct hlist_head               backing_objects; /* object(s) backing this file/index */
@@ -326,13 +327,11 @@ struct fscache_cookie {
 
         unsigned long                   flags;
 #define FSCACHE_COOKIE_LOOKING_UP       0       /* T if non-index cookie being looked up still */
-#define FSCACHE_COOKIE_CREATING         1       /* T if non-index object being created still */
-#define FSCACHE_COOKIE_NO_DATA_YET      2       /* T if new object with no cached data yet */
-#define FSCACHE_COOKIE_PENDING_FILL     3       /* T if pending initial fill on object */
-#define FSCACHE_COOKIE_FILLING          4       /* T if filling object incrementally */
-#define FSCACHE_COOKIE_UNAVAILABLE      5       /* T if cookie is unavailable (error, etc) */
-#define FSCACHE_COOKIE_WAITING_ON_READS 6       /* T if cookie is waiting on reads */
-#define FSCACHE_COOKIE_INVALIDATING     7       /* T if cookie is being invalidated */
+#define FSCACHE_COOKIE_NO_DATA_YET      1       /* T if new object with no cached data yet */
+#define FSCACHE_COOKIE_UNAVAILABLE      2       /* T if cookie is unavailable (error, etc) */
+#define FSCACHE_COOKIE_INVALIDATING     3       /* T if cookie is being invalidated */
+#define FSCACHE_COOKIE_RELINQUISHED     4       /* T if cookie has been relinquished */
+#define FSCACHE_COOKIE_RETIRED          5       /* T if cookie was retired */
 };
 
 extern struct fscache_cookie fscache_fsdef_index;
@@ -341,45 +340,40 @@ extern struct fscache_cookie fscache_fsdef_index;
  * Event list for fscache_object::{event_mask,events}
  */
 enum {
-        FSCACHE_OBJECT_EV_REQUEUE,      /* T if object should be requeued */
+        FSCACHE_OBJECT_EV_NEW_CHILD,    /* T if object has a new child */
+        FSCACHE_OBJECT_EV_PARENT_READY, /* T if object's parent is ready */
         FSCACHE_OBJECT_EV_UPDATE,       /* T if object should be updated */
         FSCACHE_OBJECT_EV_INVALIDATE,   /* T if cache requested object invalidation */
         FSCACHE_OBJECT_EV_CLEARED,      /* T if accessors all gone */
         FSCACHE_OBJECT_EV_ERROR,        /* T if fatal error occurred during processing */
-        FSCACHE_OBJECT_EV_RELEASE,      /* T if netfs requested object release */
-        FSCACHE_OBJECT_EV_RETIRE,       /* T if netfs requested object retirement */
-        FSCACHE_OBJECT_EV_WITHDRAW,     /* T if cache requested object withdrawal */
+        FSCACHE_OBJECT_EV_KILL,         /* T if netfs relinquished or cache withdrew object */
         NR_FSCACHE_OBJECT_EVENTS
 };
 
 #define FSCACHE_OBJECT_EVENTS_MASK ((1UL << NR_FSCACHE_OBJECT_EVENTS) - 1)
 
 /*
+ * States for object state machine.
+ */
+struct fscache_transition {
+        unsigned long events;
+        const struct fscache_state *transit_to;
+};
+
+struct fscache_state {
+        char name[24];
+        char short_name[8];
+        const struct fscache_state *(*work)(struct fscache_object *object,
+                                            int event);
+        const struct fscache_transition transitions[];
+};
+
+/*
  * on-disk cache file or index handle
  */
 struct fscache_object {
-        enum fscache_object_state {
-                FSCACHE_OBJECT_INIT,            /* object in initial unbound state */
-                FSCACHE_OBJECT_LOOKING_UP,      /* looking up object */
-                FSCACHE_OBJECT_CREATING,        /* creating object */
-
-                /* active states */
-                FSCACHE_OBJECT_AVAILABLE,       /* cleaning up object after creation */
-                FSCACHE_OBJECT_ACTIVE,          /* object is usable */
-                FSCACHE_OBJECT_INVALIDATING,    /* object is invalidating */
-                FSCACHE_OBJECT_UPDATING,        /* object is updating */
-
-                /* terminal states */
-                FSCACHE_OBJECT_DYING,           /* object waiting for accessors to finish */
-                FSCACHE_OBJECT_LC_DYING,        /* object cleaning up after lookup/create */
-                FSCACHE_OBJECT_ABORT_INIT,      /* abort the init state */
-                FSCACHE_OBJECT_RELEASING,       /* releasing object */
-                FSCACHE_OBJECT_RECYCLING,       /* retiring object */
-                FSCACHE_OBJECT_WITHDRAWING,     /* withdrawing object */
-                FSCACHE_OBJECT_DEAD,            /* object is now dead */
-                FSCACHE_OBJECT__NSTATES
-        } state;
-
+        const struct fscache_state *state;      /* Object state machine state */
+        const struct fscache_transition *oob_table; /* OOB state transition table */
         int                     debug_id;       /* debugging ID */
         int                     n_children;     /* number of child objects */
         int                     n_ops;          /* number of extant ops on object */
@@ -390,6 +384,7 @@ struct fscache_object {
         spinlock_t              lock;           /* state and operations lock */
 
         unsigned long           lookup_jif;     /* time at which lookup started */
+        unsigned long           oob_event_mask; /* OOB events this object is interested in */
         unsigned long           event_mask;     /* events this object is interested in */
         unsigned long           events;         /* events to be processed by this object
                                                  * (order is important - using fls) */
@@ -398,6 +393,9 @@ struct fscache_object {
 #define FSCACHE_OBJECT_LOCK             0       /* T if object is busy being processed */
 #define FSCACHE_OBJECT_PENDING_WRITE    1       /* T if object has pending write */
 #define FSCACHE_OBJECT_WAITING          2       /* T if object is waiting on its parent */
+#define FSCACHE_OBJECT_IS_LIVE          3       /* T if object is not withdrawn or relinquished */
+#define FSCACHE_OBJECT_IS_LOOKED_UP     4       /* T if object has been looked up */
+#define FSCACHE_OBJECT_IS_AVAILABLE     5       /* T if object has become active */
 
         struct list_head        cache_link;     /* link in cache->object_list */
         struct hlist_node       cookie_link;    /* link in cookie->backing_objects */
@@ -415,62 +413,40 @@ struct fscache_object {
         loff_t                  store_limit_l;  /* current storage limit */
 };
 
-extern const char *fscache_object_states[];
+extern void fscache_object_init(struct fscache_object *, struct fscache_cookie *,
+                                struct fscache_cache *);
+extern void fscache_object_destroy(struct fscache_object *);
 
-#define fscache_object_is_active(obj)                         \
-        (!test_bit(FSCACHE_IOERROR, &(obj)->cache->flags) &&  \
-         (obj)->state >= FSCACHE_OBJECT_AVAILABLE &&          \
-         (obj)->state < FSCACHE_OBJECT_DYING)
+extern void fscache_object_lookup_negative(struct fscache_object *object);
+extern void fscache_obtained_object(struct fscache_object *object);
 
-#define fscache_object_is_dead(obj)                             \
-        (test_bit(FSCACHE_IOERROR, &(obj)->cache->flags) &&     \
-         (obj)->state >= FSCACHE_OBJECT_DYING)
+static inline bool fscache_object_is_live(struct fscache_object *object)
+{
+        return test_bit(FSCACHE_OBJECT_IS_LIVE, &object->flags);
+}
 
-extern void fscache_object_work_func(struct work_struct *work);
+static inline bool fscache_object_is_dying(struct fscache_object *object)
+{
+        return !fscache_object_is_live(object);
+}
 
-/**
- * fscache_object_init - Initialise a cache object description
- * @object: Object description
- *
- * Initialise a cache object description to its basic values.
- *
- * See Documentation/filesystems/caching/backend-api.txt for a complete
- * description.
- */
-static inline
-void fscache_object_init(struct fscache_object *object,
-                         struct fscache_cookie *cookie,
-                         struct fscache_cache *cache)
+static inline bool fscache_object_is_available(struct fscache_object *object)
 {
-        atomic_inc(&cache->object_count);
-
-        object->state = FSCACHE_OBJECT_INIT;
-        spin_lock_init(&object->lock);
-        INIT_LIST_HEAD(&object->cache_link);
-        INIT_HLIST_NODE(&object->cookie_link);
-        INIT_WORK(&object->work, fscache_object_work_func);
-        INIT_LIST_HEAD(&object->dependents);
-        INIT_LIST_HEAD(&object->dep_link);
-        INIT_LIST_HEAD(&object->pending_ops);
-        object->n_children = 0;
-        object->n_ops = object->n_in_progress = object->n_exclusive = 0;
-        object->events = object->event_mask = 0;
-        object->flags = 0;
-        object->store_limit = 0;
-        object->store_limit_l = 0;
-        object->cache = cache;
-        object->cookie = cookie;
-        object->parent = NULL;
+        return test_bit(FSCACHE_OBJECT_IS_AVAILABLE, &object->flags);
 }
 
-extern void fscache_object_lookup_negative(struct fscache_object *object);
-extern void fscache_obtained_object(struct fscache_object *object);
+static inline bool fscache_object_is_active(struct fscache_object *object)
+{
+        return fscache_object_is_available(object) &&
+                fscache_object_is_live(object) &&
+                !test_bit(FSCACHE_IOERROR, &object->cache->flags);
+}
 
-#ifdef CONFIG_FSCACHE_OBJECT_LIST
-extern void fscache_object_destroy(struct fscache_object *object);
-#else
-#define fscache_object_destroy(object) do {} while(0)
-#endif
+static inline bool fscache_object_is_dead(struct fscache_object *object)
+{
+        return fscache_object_is_dying(object) &&
+                test_bit(FSCACHE_IOERROR, &object->cache->flags);
+}
 
 /**
  * fscache_object_destroyed - Note destruction of an object in a cache
@@ -531,6 +507,33 @@ static inline void fscache_end_io(struct fscache_retrieval *op,
         op->end_io_func(page, op->context, error);
 }
 
+/**
+ * fscache_use_cookie - Request usage of cookie attached to an object
+ * @object: Object description
+ * 
+ * Request usage of the cookie attached to an object.  NULL is returned if the
+ * relinquishment had reduced the cookie usage count to 0.
+ */
+static inline bool fscache_use_cookie(struct fscache_object *object)
+{
+        struct fscache_cookie *cookie = object->cookie;
+        return atomic_inc_not_zero(&cookie->n_active) != 0;
+}
+
+/**
+ * fscache_unuse_cookie - Cease usage of cookie attached to an object
+ * @object: Object description
+ * 
+ * Cease usage of the cookie attached to an object.  When the users count
+ * reaches zero then the cookie relinquishment will be permitted to proceed.
+ */
+static inline void fscache_unuse_cookie(struct fscache_object *object)
+{
+        struct fscache_cookie *cookie = object->cookie;
+        if (atomic_dec_and_test(&cookie->n_active))
+                wake_up_atomic_t(&cookie->n_active);
+}
+
 /*
  * out-of-line cache backend functions
  */
diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index c2559847d7ee..fae8bac907ef 100644
--- a/include/linux/hyperv.h
+++ b/include/linux/hyperv.h
@@ -909,6 +909,7 @@ enum vmbus_channel_state {
         CHANNEL_OFFER_STATE,
         CHANNEL_OPENING_STATE,
         CHANNEL_OPEN_STATE,
+        CHANNEL_OPENED_STATE,
 };
 
 struct vmbus_channel_debug_info {
@@ -1046,6 +1047,38 @@ struct vmbus_channel {
          * preserve the earlier behavior.
          */
         u32 target_vp;
+        /*
+         * Support for sub-channels. For high performance devices,
+         * it will be useful to have multiple sub-channels to support
+         * a scalable communication infrastructure with the host.
+         * The support for sub-channels is implemented as an extention
+         * to the current infrastructure.
+         * The initial offer is considered the primary channel and this
+         * offer message will indicate if the host supports sub-channels.
+         * The guest is free to ask for sub-channels to be offerred and can
+         * open these sub-channels as a normal "primary" channel. However,
+         * all sub-channels will have the same type and instance guids as the
+         * primary channel. Requests sent on a given channel will result in a
+         * response on the same channel.
+         */
+
+        /*
+         * Sub-channel creation callback. This callback will be called in
+         * process context when a sub-channel offer is received from the host.
+         * The guest can open the sub-channel in the context of this callback.
+         */
+        void (*sc_creation_callback)(struct vmbus_channel *new_sc);
+
+        spinlock_t sc_lock;
+        /*
+         * All Sub-channels of a primary channel are linked here.
+         */
+        struct list_head sc_list;
+        /*
+         * The primary channel this sub-channel belongs to.
+         * This will be NULL for the primary channel.
+         */
+        struct vmbus_channel *primary_channel;
 };
 
 static inline void set_channel_read_state(struct vmbus_channel *c, bool state)
@@ -1057,6 +1090,34 @@ void vmbus_onmessage(void *context);
 
 int vmbus_request_offers(void);
 
+/*
+ * APIs for managing sub-channels.
+ */
+
+void vmbus_set_sc_create_callback(struct vmbus_channel *primary_channel,
+                        void (*sc_cr_cb)(struct vmbus_channel *new_sc));
+
+/*
+ * Retrieve the (sub) channel on which to send an outgoing request.
+ * When a primary channel has multiple sub-channels, we choose a
+ * channel whose VCPU binding is closest to the VCPU on which
+ * this call is being made.
+ */
+struct vmbus_channel *vmbus_get_outgoing_channel(struct vmbus_channel *primary);
+
+/*
+ * Check if sub-channels have already been offerred. This API will be useful
+ * when the driver is unloaded after establishing sub-channels. In this case,
+ * when the driver is re-loaded, the driver would have to check if the
+ * subchannels have already been established before attempting to request
+ * the creation of sub-channels.
+ * This function returns TRUE to indicate that subchannels have already been
+ * created.
+ * This function should be invoked after setting the callback function for
+ * sub-channel creation.
+ */
+bool vmbus_are_subchannels_present(struct vmbus_channel *primary);
+
 /* The format must be the same as struct vmdata_gpa_direct */
 struct vmbus_channel_packet_page_buffer {
         u16 type;
@@ -1327,6 +1388,15 @@ void vmbus_driver_unregister(struct hv_driver *hv_driver);
                         0x8e, 0x77, 0x05, 0x58, 0xeb, 0x10, 0x73, 0xf8 \
                 }
 
+/*
+ * Synthetic FC GUID
+ * {2f9bcc4a-0069-4af3-b76b-6fd0be528cda}
+ */
+#define HV_SYNTHFC_GUID \
+        .guid = { \
+                        0x4A, 0xCC, 0x9B, 0x2F, 0x69, 0x00, 0xF3, 0x4A, \
+                        0xB7, 0x6B, 0x6F, 0xD0, 0xBE, 0x52, 0x8C, 0xDA \
+                }
 
 /*
  * Common header for Hyper-V ICs
diff --git a/include/linux/if_ether.h b/include/linux/if_ether.h
index 12b4d55a02af..d5569734f672 100644
--- a/include/linux/if_ether.h
+++ b/include/linux/if_ether.h
@@ -30,7 +30,6 @@ static inline struct ethhdr *eth_hdr(const struct sk_buff *skb)
 
 int eth_header_parse(const struct sk_buff *skb, unsigned char *haddr);
 
-int mac_pton(const char *s, u8 *mac);
 extern ssize_t sysfs_format_mac(char *buf, const unsigned char *addr, int len);
 
 #endif  /* _LINUX_IF_ETHER_H */
diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h
index 52bd03b38962..637fa71de0c7 100644
--- a/include/linux/if_vlan.h
+++ b/include/linux/if_vlan.h
@@ -44,7 +44,7 @@ struct vlan_hdr {
  *      struct vlan_ethhdr - vlan ethernet header (ethhdr + vlan_hdr)
  *      @h_dest: destination ethernet address
  *      @h_source: source ethernet address
- *      @h_vlan_proto: ethernet protocol (always 0x8100)
+ *      @h_vlan_proto: ethernet protocol
  *      @h_vlan_TCI: priority and VLAN ID
  *      @h_vlan_encapsulated_proto: packet type ID or len
  */
diff --git a/include/linux/iio/common/st_sensors.h b/include/linux/iio/common/st_sensors.h
index 172c5b23cb84..72b26940730d 100644
--- a/include/linux/iio/common/st_sensors.h
+++ b/include/linux/iio/common/st_sensors.h
@@ -24,14 +24,10 @@
 #define ST_SENSORS_FULLSCALE_AVL_MAX            10
 
 #define ST_SENSORS_NUMBER_ALL_CHANNELS          4
-#define ST_SENSORS_NUMBER_DATA_CHANNELS         3
 #define ST_SENSORS_ENABLE_ALL_AXIS              0x07
-#define ST_SENSORS_BYTE_FOR_CHANNEL             2
 #define ST_SENSORS_SCAN_X                       0
 #define ST_SENSORS_SCAN_Y                       1
 #define ST_SENSORS_SCAN_Z                       2
-#define ST_SENSORS_DEFAULT_12_REALBITS          12
-#define ST_SENSORS_DEFAULT_16_REALBITS          16
 #define ST_SENSORS_DEFAULT_POWER_ON_VALUE       0x01
 #define ST_SENSORS_DEFAULT_POWER_OFF_VALUE      0x00
 #define ST_SENSORS_DEFAULT_WAI_ADDRESS          0x0f
@@ -42,20 +38,20 @@
 #define ST_SENSORS_MAX_NAME                     17
 #define ST_SENSORS_MAX_4WAI                     7
 
-#define ST_SENSORS_LSM_CHANNELS(device_type, index, mod, endian, bits, addr) \
+#define ST_SENSORS_LSM_CHANNELS(device_type, mask, index, mod, \
+                                        ch2, s, endian, rbits, sbits, addr) \
 { \
         .type = device_type, \
-        .modified = 1, \
-        .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
-                        BIT(IIO_CHAN_INFO_SCALE), \
+        .modified = mod, \
+        .info_mask_separate = mask, \
         .scan_index = index, \
-        .channel2 = mod, \
+        .channel2 = ch2, \
         .address = addr, \
         .scan_type = { \
-                .sign = 's', \
-                .realbits = bits, \
-                .shift = 16 - bits, \
-                .storagebits = 16, \
+                .sign = s, \
+                .realbits = rbits, \
+                .shift = sbits - rbits, \
+                .storagebits = sbits, \
                 .endianness = endian, \
         }, \
 }
@@ -204,6 +200,7 @@ struct st_sensors {
  * @multiread_bit: Use or not particular bit for [I2C/SPI] multiread.
  * @buffer_data: Data used by buffer part.
  * @odr: Output data rate of the sensor [Hz].
+ * num_data_channels: Number of data channels used in buffer.
  * @get_irq_data_ready: Function to get the IRQ used for data ready signal.
  * @tf: Transfer function structure used by I/O operations.
  * @tb: Transfer buffers and mutex used by I/O operations.
@@ -220,6 +217,7 @@ struct st_sensor_data {
         char *buffer_data;
 
         unsigned int odr;
+        unsigned int num_data_channels;
 
         unsigned int (*get_irq_data_ready) (struct iio_dev *indio_dev);
 
diff --git a/include/linux/iio/frequency/adf4350.h b/include/linux/iio/frequency/adf4350.h
index be91f344d5fc..ffd8c8f90928 100644
--- a/include/linux/iio/frequency/adf4350.h
+++ b/include/linux/iio/frequency/adf4350.h
@@ -1,7 +1,7 @@
 /*
  * ADF4350/ADF4351 SPI PLL driver
  *
- * Copyright 2012 Analog Devices Inc.
+ * Copyright 2012-2013 Analog Devices Inc.
  *
  * Licensed under the GPL-2.
  */
@@ -41,7 +41,7 @@
 #define ADF4350_REG2_RDIV2_EN                   (1 << 24)
 #define ADF4350_REG2_RMULT2_EN                  (1 << 25)
 #define ADF4350_REG2_MUXOUT(x)                  ((x) << 26)
-#define ADF4350_REG2_NOISE_MODE(x)              ((x) << 29)
+#define ADF4350_REG2_NOISE_MODE(x)              (((unsigned)(x)) << 29)
 #define ADF4350_MUXOUT_THREESTATE               0
 #define ADF4350_MUXOUT_DVDD                     1
 #define ADF4350_MUXOUT_GND                      2
diff --git a/include/linux/ipmi-fru.h b/include/linux/ipmi-fru.h
new file mode 100644
index 000000000000..4d3a76380e32
--- /dev/null
+++ b/include/linux/ipmi-fru.h
@@ -0,0 +1,135 @@
+/*
+ * Copyright (C) 2012 CERN (www.cern.ch)
+ * Author: Alessandro Rubini <rubini@gnudd.com>
+ *
+ * Released according to the GNU GPL, version 2 or any later version.
+ *
+ * This work is part of the White Rabbit project, a research effort led
+ * by CERN, the European Institute for Nuclear Research.
+ */
+#ifndef __LINUX_IPMI_FRU_H__
+#define __LINUX_IPMI_FRU_H__
+#ifdef __KERNEL__
+#  include <linux/types.h>
+#  include <linux/string.h>
+#else
+#  include <stdint.h>
+#  include <string.h>
+#endif
+
+/*
+ * These structures match the unaligned crap we have in FRU1011.pdf
+ * (http://download.intel.com/design/servers/ipmi/FRU1011.pdf)
+ */
+
+/* chapter 8, page 5 */
+struct fru_common_header {
+        uint8_t format;                 /* 0x01 */
+        uint8_t internal_use_off;       /* multiple of 8 bytes */
+        uint8_t chassis_info_off;       /* multiple of 8 bytes */
+        uint8_t board_area_off;         /* multiple of 8 bytes */
+        uint8_t product_area_off;       /* multiple of 8 bytes */
+        uint8_t multirecord_off;        /* multiple of 8 bytes */
+        uint8_t pad;                    /* must be 0 */
+        uint8_t checksum;               /* sum modulo 256 must be 0 */
+};
+
+/* chapter 9, page 5 -- internal_use: not used by us */
+
+/* chapter 10, page 6 -- chassis info: not used by us */
+
+/* chapter 13, page 9 -- used by board_info_area below */
+struct fru_type_length {
+        uint8_t type_length;
+        uint8_t data[0];
+};
+
+/* chapter 11, page 7 */
+struct fru_board_info_area {
+        uint8_t format;                 /* 0x01 */
+        uint8_t area_len;               /* multiple of 8 bytes */
+        uint8_t language;               /* I hope it's 0 */
+        uint8_t mfg_date[3];            /* LSB, minutes since 1996-01-01 */
+        struct fru_type_length tl[0];   /* type-length stuff follows */
+
+        /*
+         * the TL there are in order:
+         * Board Manufacturer
+         * Board Product Name
+         * Board Serial Number
+         * Board Part Number
+         * FRU File ID (may be null)
+         * more manufacturer-specific stuff
+         * 0xc1 as a terminator
+         * 0x00 pad to a multiple of 8 bytes - 1
+         * checksum (sum of all stuff module 256 must be zero)
+         */
+};
+
+enum fru_type {
+        FRU_TYPE_BINARY         = 0x00,
+        FRU_TYPE_BCDPLUS        = 0x40,
+        FRU_TYPE_ASCII6         = 0x80,
+        FRU_TYPE_ASCII          = 0xc0, /* not ascii: depends on language */
+};
+
+/*
+ * some helpers
+ */
+static inline struct fru_board_info_area *fru_get_board_area(
+        const struct fru_common_header *header)
+{
+        /* we know for sure that the header is 8 bytes in size */
+        return (struct fru_board_info_area *)(header + header->board_area_off);
+}
+
+static inline int fru_type(struct fru_type_length *tl)
+{
+        return tl->type_length & 0xc0;
+}
+
+static inline int fru_length(struct fru_type_length *tl)
+{
+        return (tl->type_length & 0x3f) + 1; /* len of whole record */
+}
+
+/* assume ascii-latin1 encoding */
+static inline int fru_strlen(struct fru_type_length *tl)
+{
+        return fru_length(tl) - 1;
+}
+
+static inline char *fru_strcpy(char *dest, struct fru_type_length *tl)
+{
+        int len = fru_strlen(tl);
+        memcpy(dest, tl->data, len);
+        dest[len] = '\0';
+        return dest;
+}
+
+static inline struct fru_type_length *fru_next_tl(struct fru_type_length *tl)
+{
+        return tl + fru_length(tl);
+}
+
+static inline int fru_is_eof(struct fru_type_length *tl)
+{
+        return tl->type_length == 0xc1;
+}
+
+/*
+ * External functions defined in fru-parse.c.
+ */
+extern int fru_header_cksum_ok(struct fru_common_header *header);
+extern int fru_bia_cksum_ok(struct fru_board_info_area *bia);
+
+/* All these 4 return allocated strings by calling fru_alloc() */
+extern char *fru_get_board_manufacturer(struct fru_common_header *header);
+extern char *fru_get_product_name(struct fru_common_header *header);
+extern char *fru_get_serial_number(struct fru_common_header *header);
+extern char *fru_get_part_number(struct fru_common_header *header);
+
+/* This must be defined by the caller of the above functions */
+extern void *fru_alloc(size_t size);
+
+#endif /* __LINUX_IMPI_FRU_H__ */
diff --git a/include/linux/irqchip.h b/include/linux/irqchip.h
index e0006f1d35a0..14d79131f53d 100644
--- a/include/linux/irqchip.h
+++ b/include/linux/irqchip.h
@@ -11,6 +11,10 @@
 #ifndef _LINUX_IRQCHIP_H
 #define _LINUX_IRQCHIP_H
 
+#ifdef CONFIG_IRQCHIP
 void irqchip_init(void);
+#else
+static inline void irqchip_init(void) {}
+#endif
 
 #endif
diff --git a/include/linux/jbd.h b/include/linux/jbd.h
index 7e0b622503c4..8685d1be12c7 100644
--- a/include/linux/jbd.h
+++ b/include/linux/jbd.h
@@ -27,7 +27,6 @@
 #include <linux/buffer_head.h>
 #include <linux/journal-head.h>
 #include <linux/stddef.h>
-#include <linux/bit_spinlock.h>
 #include <linux/mutex.h>
 #include <linux/timer.h>
 #include <linux/lockdep.h>
@@ -244,6 +243,31 @@ typedef struct journal_superblock_s
 
 #include <linux/fs.h>
 #include <linux/sched.h>
+
+enum jbd_state_bits {
+        BH_JBD                  /* Has an attached ext3 journal_head */
+          = BH_PrivateStart,
+        BH_JWrite,              /* Being written to log (@@@ DEBUGGING) */
+        BH_Freed,               /* Has been freed (truncated) */
+        BH_Revoked,             /* Has been revoked from the log */
+        BH_RevokeValid,         /* Revoked flag is valid */
+        BH_JBDDirty,            /* Is dirty but journaled */
+        BH_State,               /* Pins most journal_head state */
+        BH_JournalHead,         /* Pins bh->b_private and jh->b_bh */
+        BH_Unshadow,            /* Dummy bit, for BJ_Shadow wakeup filtering */
+        BH_JBDPrivateStart,     /* First bit available for private use by FS */
+};
+
+BUFFER_FNS(JBD, jbd)
+BUFFER_FNS(JWrite, jwrite)
+BUFFER_FNS(JBDDirty, jbddirty)
+TAS_BUFFER_FNS(JBDDirty, jbddirty)
+BUFFER_FNS(Revoked, revoked)
+TAS_BUFFER_FNS(Revoked, revoked)
+BUFFER_FNS(RevokeValid, revokevalid)
+TAS_BUFFER_FNS(RevokeValid, revokevalid)
+BUFFER_FNS(Freed, freed)
+
 #include <linux/jbd_common.h>
 
 #define J_ASSERT(assert)        BUG_ON(!(assert))
@@ -840,7 +864,7 @@ extern void	 journal_release_buffer (handle_t *, struct buffer_head *);
 extern int       journal_forget (handle_t *, struct buffer_head *);
 extern void      journal_sync_buffer (struct buffer_head *);
 extern void      journal_invalidatepage(journal_t *,
-                                struct page *, unsigned long);
+                                struct page *, unsigned int, unsigned int);
 extern int       journal_try_to_free_buffers(journal_t *, struct page *, gfp_t);
 extern int       journal_stop(handle_t *);
 extern int       journal_flush (journal_t *);
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
index 6e051f472edb..d5b50a19463c 100644
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -26,7 +26,6 @@
 #include <linux/buffer_head.h>
 #include <linux/journal-head.h>
 #include <linux/stddef.h>
-#include <linux/bit_spinlock.h>
 #include <linux/mutex.h>
 #include <linux/timer.h>
 #include <linux/slab.h>
@@ -57,17 +56,13 @@
  */
 #define JBD2_EXPENSIVE_CHECKING
 extern ushort jbd2_journal_enable_debug;
+void __jbd2_debug(int level, const char *file, const char *func,
+                  unsigned int line, const char *fmt, ...);
 
-#define jbd_debug(n, f, a...)                                           \
-        do {                                                            \
-                if ((n) <= jbd2_journal_enable_debug) {                 \
-                        printk (KERN_DEBUG "(%s, %d): %s: ",            \
-                                __FILE__, __LINE__, __func__);  \
-                        printk (f, ## a);                               \
-                }                                                       \
-        } while (0)
+#define jbd_debug(n, fmt, a...) \
+        __jbd2_debug((n), __FILE__, __func__, __LINE__, (fmt), ##a)
 #else
-#define jbd_debug(f, a...)      /**/
+#define jbd_debug(n, fmt, a...)    /**/
 #endif
 
 extern void *jbd2_alloc(size_t size, gfp_t flags);
@@ -302,6 +297,34 @@ typedef struct journal_superblock_s
 
 #include <linux/fs.h>
 #include <linux/sched.h>
+
+enum jbd_state_bits {
+        BH_JBD                  /* Has an attached ext3 journal_head */
+          = BH_PrivateStart,
+        BH_JWrite,              /* Being written to log (@@@ DEBUGGING) */
+        BH_Freed,               /* Has been freed (truncated) */
+        BH_Revoked,             /* Has been revoked from the log */
+        BH_RevokeValid,         /* Revoked flag is valid */
+        BH_JBDDirty,            /* Is dirty but journaled */
+        BH_State,               /* Pins most journal_head state */
+        BH_JournalHead,         /* Pins bh->b_private and jh->b_bh */
+        BH_Shadow,              /* IO on shadow buffer is running */
+        BH_Verified,            /* Metadata block has been verified ok */
+        BH_JBDPrivateStart,     /* First bit available for private use by FS */
+};
+
+BUFFER_FNS(JBD, jbd)
+BUFFER_FNS(JWrite, jwrite)
+BUFFER_FNS(JBDDirty, jbddirty)
+TAS_BUFFER_FNS(JBDDirty, jbddirty)
+BUFFER_FNS(Revoked, revoked)
+TAS_BUFFER_FNS(Revoked, revoked)
+BUFFER_FNS(RevokeValid, revokevalid)
+TAS_BUFFER_FNS(RevokeValid, revokevalid)
+BUFFER_FNS(Freed, freed)
+BUFFER_FNS(Shadow, shadow)
+BUFFER_FNS(Verified, verified)
+
 #include <linux/jbd_common.h>
 
 #define J_ASSERT(assert)        BUG_ON(!(assert))
@@ -382,8 +405,15 @@ struct jbd2_revoke_table_s;
 
 struct jbd2_journal_handle
 {
-        /* Which compound transaction is this update a part of? */
-        transaction_t           *h_transaction;
+        union {
+                /* Which compound transaction is this update a part of? */
+                transaction_t   *h_transaction;
+                /* Which journal handle belongs to - used iff h_reserved set */
+                journal_t       *h_journal;
+        };
+
+        /* Handle reserved for finishing the logical operation */
+        handle_t                *h_rsv_handle;
 
         /* Number of remaining buffers we are allowed to dirty: */
         int                     h_buffer_credits;
@@ -398,6 +428,7 @@ struct jbd2_journal_handle
         /* Flags [no locking] */
         unsigned int    h_sync:         1;      /* sync-on-close */
         unsigned int    h_jdata:        1;      /* force data journaling */
+        unsigned int    h_reserved:     1;      /* handle with reserved credits */
         unsigned int    h_aborted:      1;      /* fatal error on handle */
         unsigned int    h_type:         8;      /* for handle statistics */
         unsigned int    h_line_no:      16;     /* for handle statistics */
@@ -524,12 +555,6 @@ struct transaction_s
         struct journal_head     *t_checkpoint_io_list;
 
         /*
-         * Doubly-linked circular list of temporary buffers currently undergoing
-         * IO in the log [j_list_lock]
-         */
-        struct journal_head     *t_iobuf_list;
-
-        /*
          * Doubly-linked circular list of metadata buffers being shadowed by log
          * IO.  The IO buffers on the iobuf list and the shadow buffers on this
          * list match each other one for one at all times. [j_list_lock]
@@ -537,12 +562,6 @@ struct transaction_s
         struct journal_head     *t_shadow_list;
 
         /*
-         * Doubly-linked circular list of control buffers being written to the
-         * log. [j_list_lock]
-         */
-        struct journal_head     *t_log_list;
-
-        /*
          * List of inodes whose data we've modified in data=ordered mode.
          * [j_list_lock]
          */
@@ -671,11 +690,10 @@ jbd2_time_diff(unsigned long start, unsigned long end)
  *  waiting for checkpointing
  * @j_wait_transaction_locked: Wait queue for waiting for a locked transaction
  *  to start committing, or for a barrier lock to be released
- * @j_wait_logspace: Wait queue for waiting for checkpointing to complete
  * @j_wait_done_commit: Wait queue for waiting for commit to complete
- * @j_wait_checkpoint:  Wait queue to trigger checkpointing
  * @j_wait_commit: Wait queue to trigger commit
  * @j_wait_updates: Wait queue to wait for updates to complete
+ * @j_wait_reserved: Wait queue to wait for reserved buffer credits to drop
  * @j_checkpoint_mutex: Mutex for locking against concurrent checkpoints
  * @j_head: Journal head - identifies the first unused block in the journal
  * @j_tail: Journal tail - identifies the oldest still-used block in the
@@ -689,6 +707,7 @@ jbd2_time_diff(unsigned long start, unsigned long end)
  *     journal
  * @j_fs_dev: Device which holds the client fs.  For internal journal this will
  *     be equal to j_dev
+ * @j_reserved_credits: Number of buffers reserved from the running transaction
  * @j_maxlen: Total maximum capacity of the journal region on disk.
  * @j_list_lock: Protects the buffer lists and internal buffer state.
  * @j_inode: Optional inode where we store the journal.  If present, all journal
@@ -778,21 +797,18 @@ struct journal_s
          */
         wait_queue_head_t       j_wait_transaction_locked;
 
-        /* Wait queue for waiting for checkpointing to complete */
-        wait_queue_head_t       j_wait_logspace;
-
         /* Wait queue for waiting for commit to complete */
         wait_queue_head_t       j_wait_done_commit;
 
-        /* Wait queue to trigger checkpointing */
-        wait_queue_head_t       j_wait_checkpoint;
-
         /* Wait queue to trigger commit */
         wait_queue_head_t       j_wait_commit;
 
         /* Wait queue to wait for updates to complete */
         wait_queue_head_t       j_wait_updates;
 
+        /* Wait queue to wait for reserved buffer credits to drop */
+        wait_queue_head_t       j_wait_reserved;
+
         /* Semaphore for locking against concurrent checkpoints */
         struct mutex            j_checkpoint_mutex;
 
@@ -847,6 +863,9 @@ struct journal_s
         /* Total maximum capacity of the journal region on disk. */
         unsigned int            j_maxlen;
 
+        /* Number of buffers reserved from the running transaction */
+        atomic_t                j_reserved_credits;
+
         /*
          * Protects the buffer lists and internal buffer state.
          */
@@ -991,9 +1010,17 @@ extern void __jbd2_journal_file_buffer(struct journal_head *, transaction_t *, i
 extern void __journal_free_buffer(struct journal_head *bh);
 extern void jbd2_journal_file_buffer(struct journal_head *, transaction_t *, int);
 extern void __journal_clean_data_list(transaction_t *transaction);
+static inline void jbd2_file_log_bh(struct list_head *head, struct buffer_head *bh)
+{
+        list_add_tail(&bh->b_assoc_buffers, head);
+}
+static inline void jbd2_unfile_log_bh(struct buffer_head *bh)
+{
+        list_del_init(&bh->b_assoc_buffers);
+}
 
 /* Log buffer allocation */
-extern struct journal_head * jbd2_journal_get_descriptor_buffer(journal_t *);
+struct buffer_head *jbd2_journal_get_descriptor_buffer(journal_t *journal);
 int jbd2_journal_next_log_block(journal_t *, unsigned long long *);
 int jbd2_journal_get_log_tail(journal_t *journal, tid_t *tid,
                               unsigned long *block);
@@ -1039,11 +1066,10 @@ extern void jbd2_buffer_abort_trigger(struct journal_head *jh,
                                       struct jbd2_buffer_trigger_type *triggers);
 
 /* Buffer IO */
-extern int
-jbd2_journal_write_metadata_buffer(transaction_t          *transaction,
-                              struct journal_head  *jh_in,
-                              struct journal_head **jh_out,
-                              unsigned long long   blocknr);
+extern int jbd2_journal_write_metadata_buffer(transaction_t *transaction,
+                                              struct journal_head *jh_in,
+                                              struct buffer_head **bh_out,
+                                              sector_t blocknr);
 
 /* Transaction locking */
 extern void             __wait_on_journal (journal_t *);
@@ -1076,10 +1102,14 @@ static inline handle_t *journal_current_handle(void)
  */
 
 extern handle_t *jbd2_journal_start(journal_t *, int nblocks);
-extern handle_t *jbd2__journal_start(journal_t *, int nblocks, gfp_t gfp_mask,
-                                     unsigned int type, unsigned int line_no);
+extern handle_t *jbd2__journal_start(journal_t *, int blocks, int rsv_blocks,
+                                     gfp_t gfp_mask, unsigned int type,
+                                     unsigned int line_no);
 extern int       jbd2_journal_restart(handle_t *, int nblocks);
 extern int       jbd2__journal_restart(handle_t *, int nblocks, gfp_t gfp_mask);
+extern int       jbd2_journal_start_reserved(handle_t *handle,
+                                unsigned int type, unsigned int line_no);
+extern void      jbd2_journal_free_reserved(handle_t *handle);
 extern int       jbd2_journal_extend (handle_t *, int nblocks);
 extern int       jbd2_journal_get_write_access(handle_t *, struct buffer_head *);
 extern int       jbd2_journal_get_create_access (handle_t *, struct buffer_head *);
@@ -1090,7 +1120,7 @@ extern int	 jbd2_journal_dirty_metadata (handle_t *, struct buffer_head *);
 extern int       jbd2_journal_forget (handle_t *, struct buffer_head *);
 extern void      journal_sync_buffer (struct buffer_head *);
 extern int       jbd2_journal_invalidatepage(journal_t *,
-                                struct page *, unsigned long);
+                                struct page *, unsigned int, unsigned int);
 extern int       jbd2_journal_try_to_free_buffers(journal_t *, struct page *, gfp_t);
 extern int       jbd2_journal_stop(handle_t *);
 extern int       jbd2_journal_flush (journal_t *);
@@ -1125,6 +1155,7 @@ extern void	   jbd2_journal_ack_err    (journal_t *);
 extern int         jbd2_journal_clear_err  (journal_t *);
 extern int         jbd2_journal_bmap(journal_t *, unsigned long, unsigned long long *);
 extern int         jbd2_journal_force_commit(journal_t *);
+extern int         jbd2_journal_force_commit_nested(journal_t *);
 extern int         jbd2_journal_file_inode(handle_t *handle, struct jbd2_inode *inode);
 extern int         jbd2_journal_begin_ordered_truncate(journal_t *journal,
                                 struct jbd2_inode *inode, loff_t new_size);
@@ -1178,8 +1209,10 @@ extern int	   jbd2_journal_init_revoke_caches(void);
 extern void        jbd2_journal_destroy_revoke(journal_t *);
 extern int         jbd2_journal_revoke (handle_t *, unsigned long long, struct buffer_head *);
 extern int         jbd2_journal_cancel_revoke(handle_t *, struct journal_head *);
-extern void        jbd2_journal_write_revoke_records(journal_t *,
-                                                     transaction_t *, int);
+extern void        jbd2_journal_write_revoke_records(journal_t *journal,
+                                                     transaction_t *transaction,
+                                                     struct list_head *log_bufs,
+                                                     int write_op);
 
 /* Recovery revoke support */
 extern int      jbd2_journal_set_revoke(journal_t *, unsigned long long, tid_t);
@@ -1195,11 +1228,9 @@ extern void	jbd2_clear_buffer_revoked_flags(journal_t *journal);
  * transitions on demand.
  */
 
-int __jbd2_log_space_left(journal_t *); /* Called with journal locked */
 int jbd2_log_start_commit(journal_t *journal, tid_t tid);
 int __jbd2_log_start_commit(journal_t *journal, tid_t tid);
 int jbd2_journal_start_commit(journal_t *journal, tid_t *tid);
-int jbd2_journal_force_commit_nested(journal_t *journal);
 int jbd2_log_wait_commit(journal_t *journal, tid_t tid);
 int jbd2_complete_transaction(journal_t *journal, tid_t tid);
 int jbd2_log_do_checkpoint(journal_t *journal);
@@ -1235,7 +1266,7 @@ static inline int is_journal_aborted(journal_t *journal)
 
 static inline int is_handle_aborted(handle_t *handle)
 {
-        if (handle->h_aborted)
+        if (handle->h_aborted || !handle->h_transaction)
                 return 1;
         return is_journal_aborted(handle->h_transaction->t_journal);
 }
@@ -1266,16 +1297,37 @@ extern int jbd2_journal_blocks_per_page(struct inode *inode);
 extern size_t journal_tag_bytes(journal_t *journal);
 
 /*
+ * We reserve t_outstanding_credits >> JBD2_CONTROL_BLOCKS_SHIFT for
+ * transaction control blocks.
+ */
+#define JBD2_CONTROL_BLOCKS_SHIFT 5
+
+/*
  * Return the minimum number of blocks which must be free in the journal
  * before a new transaction may be started.  Must be called under j_state_lock.
  */
-static inline int jbd_space_needed(journal_t *journal)
+static inline int jbd2_space_needed(journal_t *journal)
 {
         int nblocks = journal->j_max_transaction_buffers;
-        if (journal->j_committing_transaction)
-                nblocks += atomic_read(&journal->j_committing_transaction->
-                                       t_outstanding_credits);
-        return nblocks;
+        return nblocks + (nblocks >> JBD2_CONTROL_BLOCKS_SHIFT);
+}
+
+/*
+ * Return number of free blocks in the log. Must be called under j_state_lock.
+ */
+static inline unsigned long jbd2_log_space_left(journal_t *journal)
+{
+        /* Allow for rounding errors */
+        unsigned long free = journal->j_free - 32;
+
+        if (journal->j_committing_transaction) {
+                unsigned long committing = atomic_read(&journal->
+                        j_committing_transaction->t_outstanding_credits);
+
+                /* Transaction + control blocks */
+                free -= committing + (committing >> JBD2_CONTROL_BLOCKS_SHIFT);
+        }
+        return free;
 }
 
 /*
@@ -1286,11 +1338,9 @@ static inline int jbd_space_needed(journal_t *journal)
 #define BJ_None         0       /* Not journaled */
 #define BJ_Metadata     1       /* Normal journaled metadata */
 #define BJ_Forget       2       /* Buffer superseded by this transaction */
-#define BJ_IO           3       /* Buffer is for temporary IO use */
-#define BJ_Shadow       4       /* Buffer contents being shadowed to the log */
-#define BJ_LogCtl       5       /* Buffer contains log descriptors */
-#define BJ_Reserved     6       /* Buffer is reserved for access by journal */
-#define BJ_Types        7
+#define BJ_Shadow       3       /* Buffer contents being shadowed to the log */
+#define BJ_Reserved     4       /* Buffer is reserved for access by journal */
+#define BJ_Types        5
 
 extern int jbd_blocks_per_page(struct inode *inode);
 
@@ -1319,6 +1369,19 @@ static inline u32 jbd2_chksum(journal_t *journal, u32 crc,
         return *(u32 *)desc.ctx;
 }
 
+/* Return most recent uncommitted transaction */
+static inline tid_t  jbd2_get_latest_transaction(journal_t *journal)
+{
+        tid_t tid;
+
+        read_lock(&journal->j_state_lock);
+        tid = journal->j_commit_request;
+        if (journal->j_running_transaction)
+                tid = journal->j_running_transaction->t_tid;
+        read_unlock(&journal->j_state_lock);
+        return tid;
+}
+
 #ifdef __KERNEL__
 
 #define buffer_trace_init(bh)   do {} while (0)
diff --git a/include/linux/jbd_common.h b/include/linux/jbd_common.h
index 6133679bc4c0..3dc53432355f 100644
--- a/include/linux/jbd_common.h
+++ b/include/linux/jbd_common.h
@@ -1,31 +1,7 @@
 #ifndef _LINUX_JBD_STATE_H
 #define _LINUX_JBD_STATE_H
 
-enum jbd_state_bits {
-        BH_JBD                  /* Has an attached ext3 journal_head */
-          = BH_PrivateStart,
-        BH_JWrite,              /* Being written to log (@@@ DEBUGGING) */
-        BH_Freed,               /* Has been freed (truncated) */
-        BH_Revoked,             /* Has been revoked from the log */
-        BH_RevokeValid,         /* Revoked flag is valid */
-        BH_JBDDirty,            /* Is dirty but journaled */
-        BH_State,               /* Pins most journal_head state */
-        BH_JournalHead,         /* Pins bh->b_private and jh->b_bh */
-        BH_Unshadow,            /* Dummy bit, for BJ_Shadow wakeup filtering */
-        BH_Verified,            /* Metadata block has been verified ok */
-        BH_JBDPrivateStart,     /* First bit available for private use by FS */
-};
-
-BUFFER_FNS(JBD, jbd)
-BUFFER_FNS(JWrite, jwrite)
-BUFFER_FNS(JBDDirty, jbddirty)
-TAS_BUFFER_FNS(JBDDirty, jbddirty)
-BUFFER_FNS(Revoked, revoked)
-TAS_BUFFER_FNS(Revoked, revoked)
-BUFFER_FNS(RevokeValid, revokevalid)
-TAS_BUFFER_FNS(RevokeValid, revokevalid)
-BUFFER_FNS(Freed, freed)
-BUFFER_FNS(Verified, verified)
+#include <linux/bit_spinlock.h>
 
 static inline struct buffer_head *jh2bh(struct journal_head *jh)
 {
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index e9ef6d6b51d5..3afb969441d1 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -450,6 +450,8 @@ static inline char * __deprecated pack_hex_byte(char *buf, u8 byte)
 extern int hex_to_bin(char ch);
 extern int __must_check hex2bin(u8 *dst, const char *src, size_t count);
 
+int mac_pton(const char *s, u8 *mac);
+
 /*
  * General tracing related utility functions - trace_printk(),
  * tracing_on/tracing_off and tracing_start()/tracing_stop
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index f0eea07d2c2b..8db53cfaccdb 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -23,6 +23,7 @@
 #include <linux/ratelimit.h>
 #include <linux/err.h>
 #include <linux/irqflags.h>
+#include <linux/context_tracking.h>
 #include <asm/signal.h>
 
 #include <linux/kvm.h>
@@ -760,42 +761,6 @@ static inline int kvm_iommu_unmap_guest(struct kvm *kvm)
 }
 #endif
 
-static inline void __guest_enter(void)
-{
-        /*
-         * This is running in ioctl context so we can avoid
-         * the call to vtime_account() with its unnecessary idle check.
-         */
-        vtime_account_system(current);
-        current->flags |= PF_VCPU;
-}
-
-static inline void __guest_exit(void)
-{
-        /*
-         * This is running in ioctl context so we can avoid
-         * the call to vtime_account() with its unnecessary idle check.
-         */
-        vtime_account_system(current);
-        current->flags &= ~PF_VCPU;
-}
-
-#ifdef CONFIG_CONTEXT_TRACKING
-extern void guest_enter(void);
-extern void guest_exit(void);
-
-#else /* !CONFIG_CONTEXT_TRACKING */
-static inline void guest_enter(void)
-{
-        __guest_enter();
-}
-
-static inline void guest_exit(void)
-{
-        __guest_exit();
-}
-#endif /* !CONFIG_CONTEXT_TRACKING */
-
 static inline void kvm_guest_enter(void)
 {
         unsigned long flags;
diff --git a/include/linux/loop.h b/include/linux/loop.h
deleted file mode 100644
index 460b60fa7adf..000000000000
--- a/include/linux/loop.h
+++ /dev/null
@@ -1,85 +0,0 @@
-/*
- * include/linux/loop.h
- *
- * Written by Theodore Ts'o, 3/29/93.
- *
- * Copyright 1993 by Theodore Ts'o.  Redistribution of this file is
- * permitted under the GNU General Public License.
- */
-#ifndef _LINUX_LOOP_H
-#define _LINUX_LOOP_H
-
-#include <linux/bio.h>
-#include <linux/blkdev.h>
-#include <linux/spinlock.h>
-#include <linux/mutex.h>
-#include <uapi/linux/loop.h>
-
-/* Possible states of device */
-enum {
-        Lo_unbound,
-        Lo_bound,
-        Lo_rundown,
-};
-
-struct loop_func_table;
-
-struct loop_device {
-        int             lo_number;
-        int             lo_refcnt;
-        loff_t          lo_offset;
-        loff_t          lo_sizelimit;
-        int             lo_flags;
-        int             (*transfer)(struct loop_device *, int cmd,
-                                    struct page *raw_page, unsigned raw_off,
-                                    struct page *loop_page, unsigned loop_off,
-                                    int size, sector_t real_block);
-        char            lo_file_name[LO_NAME_SIZE];
-        char            lo_crypt_name[LO_NAME_SIZE];
-        char            lo_encrypt_key[LO_KEY_SIZE];
-        int             lo_encrypt_key_size;
-        struct loop_func_table *lo_encryption;
-        __u32           lo_init[2];
-        kuid_t          lo_key_owner;   /* Who set the key */
-        int             (*ioctl)(struct loop_device *, int cmd, 
-                                 unsigned long arg); 
-
-        struct file *   lo_backing_file;
-        struct block_device *lo_device;
-        unsigned        lo_blocksize;
-        void            *key_data; 
-
-        gfp_t           old_gfp_mask;
-
-        spinlock_t              lo_lock;
-        struct bio_list         lo_bio_list;
-        unsigned int            lo_bio_count;
-        int                     lo_state;
-        struct mutex            lo_ctl_mutex;
-        struct task_struct      *lo_thread;
-        wait_queue_head_t       lo_event;
-        /* wait queue for incoming requests */
-        wait_queue_head_t       lo_req_wait;
-
-        struct request_queue    *lo_queue;
-        struct gendisk          *lo_disk;
-};
-
-/* Support for loadable transfer modules */
-struct loop_func_table {
-        int number;     /* filter type */ 
-        int (*transfer)(struct loop_device *lo, int cmd,
-                        struct page *raw_page, unsigned raw_off,
-                        struct page *loop_page, unsigned loop_off,
-                        int size, sector_t real_block);
-        int (*init)(struct loop_device *, const struct loop_info64 *); 
-        /* release is called from loop_unregister_transfer or clr_fd */
-        int (*release)(struct loop_device *); 
-        int (*ioctl)(struct loop_device *, int cmd, unsigned long arg);
-        struct module *owner;
-}; 
-
-int loop_register_transfer(struct loop_func_table *funcs);
-int loop_unregister_transfer(int number); 
-
-#endif
diff --git a/include/linux/mfd/palmas.h b/include/linux/mfd/palmas.h
index 8f21daf62fb5..9b81b2bdc46b 100644
--- a/include/linux/mfd/palmas.h
+++ b/include/linux/mfd/palmas.h
@@ -20,6 +20,8 @@
 #include <linux/leds.h>
 #include <linux/regmap.h>
 #include <linux/regulator/driver.h>
+#include <linux/extcon.h>
+#include <linux/usb/phy_companion.h>
 
 #define PALMAS_NUM_CLIENTS              3
 
@@ -37,6 +39,12 @@ struct palmas_gpadc;
 struct palmas_resource;
 struct palmas_usb;
 
+enum palmas_usb_state {
+        PALMAS_USB_STATE_DISCONNECT,
+        PALMAS_USB_STATE_VBUS,
+        PALMAS_USB_STATE_ID,
+};
+
 struct palmas {
         struct device *dev;
 
@@ -180,9 +188,6 @@ struct palmas_pmic_platform_data {
 };
 
 struct palmas_usb_platform_data {
-        /* Set this if platform wishes its own vbus control */
-        int no_control_vbus;
-
         /* Do we enable the wakeup comparator on probe */
         int wakeup;
 };
@@ -350,22 +355,19 @@ struct palmas_usb {
         struct palmas *palmas;
         struct device *dev;
 
-        /* for vbus reporting with irqs disabled */
-        spinlock_t lock;
-
-        struct regulator *vbus_reg;
+        struct extcon_dev edev;
 
         /* used to set vbus, in atomic path */
         struct work_struct set_vbus_work;
 
-        int irq1;
-        int irq2;
-        int irq3;
-        int irq4;
+        int id_otg_irq;
+        int id_irq;
+        int vbus_otg_irq;
+        int vbus_irq;
 
         int vbus_enable;
 
-        u8 linkstat;
+        enum palmas_usb_state linkstat;
 };
 
 #define comparator_to_palmas(x) container_of((x), struct palmas_usb, comparator)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index e0c8528a41a4..66d881f1d576 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1041,7 +1041,8 @@ int get_kernel_page(unsigned long start, int write, struct page **pages);
 struct page *get_dump_page(unsigned long addr);
 
 extern int try_to_release_page(struct page * page, gfp_t gfp_mask);
-extern void do_invalidatepage(struct page *page, unsigned long offset);
+extern void do_invalidatepage(struct page *page, unsigned int offset,
+                              unsigned int length);
 
 int __set_page_dirty_nobuffers(struct page *page);
 int __set_page_dirty_no_writeback(struct page *page);
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 60584b185a0c..96e4c21e15e0 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1695,6 +1695,7 @@ extern int		init_dummy_netdev(struct net_device *dev);
 extern struct net_device        *dev_get_by_index(struct net *net, int ifindex);
 extern struct net_device        *__dev_get_by_index(struct net *net, int ifindex);
 extern struct net_device        *dev_get_by_index_rcu(struct net *net, int ifindex);
+extern int              netdev_get_name(struct net *net, char *name, int ifindex);
 extern int              dev_restart(struct net_device *dev);
 #ifdef CONFIG_NETPOLL_TRAP
 extern int              netpoll_trap(void);
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index f463a46424e2..c5b6dbf9c2fc 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -389,8 +389,7 @@ struct perf_event {
         /* mmap bits */
         struct mutex                    mmap_mutex;
         atomic_t                        mmap_count;
-        int                             mmap_locked;
-        struct user_struct              *mmap_user;
+
         struct ring_buffer              *rb;
         struct list_head                rb_entry;
 
diff --git a/include/linux/platform_data/ad7303.h b/include/linux/platform_data/ad7303.h
new file mode 100644
index 000000000000..de6a7a6b4bbf
--- /dev/null
+++ b/include/linux/platform_data/ad7303.h
@@ -0,0 +1,21 @@
+/*
+ * Analog Devices AD7303 DAC driver
+ *
+ * Copyright 2013 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2.
+ */
+
+#ifndef __IIO_ADC_AD7303_H__
+#define __IIO_ADC_AD7303_H__
+
+/**
+ * struct ad7303_platform_data - AD7303 platform data
+ * @use_external_ref: If set to true use an external voltage reference connected
+ * to the REF pin, otherwise use the internal reference derived from Vdd.
+ */
+struct ad7303_platform_data {
+        bool use_external_ref;
+};
+
+#endif
diff --git a/include/linux/platform_data/omap_ocp2scp.h b/include/linux/platform_data/omap_ocp2scp.h
deleted file mode 100644
index 5c6c3939355f..000000000000
--- a/include/linux/platform_data/omap_ocp2scp.h
+++ /dev/null
@@ -1,31 +0,0 @@
-/*
- * omap_ocp2scp.h -- ocp2scp header file
- *
- * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * Author: Kishon Vijay Abraham I <kishon@ti.com>
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- */
-
-#ifndef __DRIVERS_OMAP_OCP2SCP_H
-#define __DRIVERS_OMAP_OCP2SCP_H
-
-struct omap_ocp2scp_dev {
-        const char                      *drv_name;
-        struct resource                 *res;
-};
-
-struct omap_ocp2scp_platform_data {
-        int                             dev_cnt;
-        struct omap_ocp2scp_dev         **devices;
-};
-#endif /* __DRIVERS_OMAP_OCP2SCP_H */
diff --git a/include/linux/platform_data/usb3503.h b/include/linux/platform_data/usb3503.h
index 85dcc709f7e9..1d1b6ef871f6 100644
--- a/include/linux/platform_data/usb3503.h
+++ b/include/linux/platform_data/usb3503.h
@@ -3,6 +3,10 @@
 
 #define USB3503_I2C_NAME        "usb3503"
 
+#define USB3503_OFF_PORT1       (1 << 1)
+#define USB3503_OFF_PORT2       (1 << 2)
+#define USB3503_OFF_PORT3       (1 << 3)
+
 enum usb3503_mode {
         USB3503_MODE_UNKNOWN,
         USB3503_MODE_HUB,
@@ -11,6 +15,7 @@ enum usb3503_mode {
 
 struct usb3503_platform_data {
         enum usb3503_mode       initial_mode;
+        u8      port_off_mask;
         int     gpio_intn;
         int     gpio_connect;
         int     gpio_reset;
diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h
index 9abf1db6aea6..cd46ee58b9dc 100644
--- a/include/linux/platform_device.h
+++ b/include/linux/platform_device.h
@@ -180,7 +180,13 @@ struct platform_driver {
         const struct platform_device_id *id_table;
 };
 
-extern int platform_driver_register(struct platform_driver *);
+/*
+ * use a macro to avoid include chaining to get THIS_MODULE
+ */
+#define platform_driver_register(drv) \
+        __platform_driver_register(drv, THIS_MODULE)
+extern int __platform_driver_register(struct platform_driver *,
+                                        struct module *);
 extern void platform_driver_unregister(struct platform_driver *);
 
 /* non-hotpluggable platform devices may use this so that probe() and
diff --git a/include/linux/preempt.h b/include/linux/preempt.h
index 87a03c746f17..f5d4723cdb3d 100644
--- a/include/linux/preempt.h
+++ b/include/linux/preempt.h
@@ -33,9 +33,25 @@ do { \
                 preempt_schedule(); \
 } while (0)
 
+#ifdef CONFIG_CONTEXT_TRACKING
+
+void preempt_schedule_context(void);
+
+#define preempt_check_resched_context() \
+do { \
+        if (unlikely(test_thread_flag(TIF_NEED_RESCHED))) \
+                preempt_schedule_context(); \
+} while (0)
+#else
+
+#define preempt_check_resched_context() preempt_check_resched()
+
+#endif /* CONFIG_CONTEXT_TRACKING */
+
 #else /* !CONFIG_PREEMPT */
 
 #define preempt_check_resched()         do { } while (0)
+#define preempt_check_resched_context() do { } while (0)
 
 #endif /* CONFIG_PREEMPT */
 
@@ -88,7 +104,7 @@ do { \
 do { \
         preempt_enable_no_resched_notrace(); \
         barrier(); \
-        preempt_check_resched(); \
+        preempt_check_resched_context(); \
 } while (0)
 
 #else /* !CONFIG_PREEMPT_COUNT */
diff --git a/include/linux/sdb.h b/include/linux/sdb.h
new file mode 100644
index 000000000000..fbb76a46c8a5
--- /dev/null
+++ b/include/linux/sdb.h
@@ -0,0 +1,159 @@
+/*
+ * This is the official version 1.1 of sdb.h
+ */
+#ifndef __SDB_H__
+#define __SDB_H__
+#ifdef __KERNEL__
+#include <linux/types.h>
+#else
+#include <stdint.h>
+#endif
+
+/*
+ * All structures are 64 bytes long and are expected
+ * to live in an array, one for each interconnect.
+ * Most fields of the structures are shared among the
+ * various types, and most-specific fields are at the
+ * beginning (for alignment reasons, and to keep the
+ * magic number at the head of the interconnect record
+ */
+
+/* Product, 40 bytes at offset 24, 8-byte aligned
+ *
+ * device_id is vendor-assigned; version is device-specific,
+ * date is hex (e.g 0x20120501), name is UTF-8, blank-filled
+ * and not terminated with a 0 byte.
+ */
+struct sdb_product {
+        uint64_t                vendor_id;      /* 0x18..0x1f */
+        uint32_t                device_id;      /* 0x20..0x23 */
+        uint32_t                version;        /* 0x24..0x27 */
+        uint32_t                date;           /* 0x28..0x2b */
+        uint8_t                 name[19];       /* 0x2c..0x3e */
+        uint8_t                 record_type;    /* 0x3f */
+};
+
+/*
+ * Component, 56 bytes at offset 8, 8-byte aligned
+ *
+ * The address range is first to last, inclusive
+ * (for example 0x100000 - 0x10ffff)
+ */
+struct sdb_component {
+        uint64_t                addr_first;     /* 0x08..0x0f */
+        uint64_t                addr_last;      /* 0x10..0x17 */
+        struct sdb_product      product;        /* 0x18..0x3f */
+};
+
+/* Type of the SDB record */
+enum sdb_record_type {
+        sdb_type_interconnect   = 0x00,
+        sdb_type_device         = 0x01,
+        sdb_type_bridge         = 0x02,
+        sdb_type_integration    = 0x80,
+        sdb_type_repo_url       = 0x81,
+        sdb_type_synthesis      = 0x82,
+        sdb_type_empty          = 0xFF,
+};
+
+/* Type 0: interconnect (first of the array)
+ *
+ * sdb_records is the length of the table including this first
+ * record, version is 1. The bus type is enumerated later.
+ */
+#define                         SDB_MAGIC       0x5344422d /* "SDB-" */
+struct sdb_interconnect {
+        uint32_t                sdb_magic;      /* 0x00-0x03 */
+        uint16_t                sdb_records;    /* 0x04-0x05 */
+        uint8_t                 sdb_version;    /* 0x06 */
+        uint8_t                 sdb_bus_type;   /* 0x07 */
+        struct sdb_component    sdb_component;  /* 0x08-0x3f */
+};
+
+/* Type 1: device
+ *
+ * class is 0 for "custom device", other values are
+ * to be standardized; ABI version is for the driver,
+ * bus-specific bits are defined by each bus (see below)
+ */
+struct sdb_device {
+        uint16_t                abi_class;      /* 0x00-0x01 */
+        uint8_t                 abi_ver_major;  /* 0x02 */
+        uint8_t                 abi_ver_minor;  /* 0x03 */
+        uint32_t                bus_specific;   /* 0x04-0x07 */
+        struct sdb_component    sdb_component;  /* 0x08-0x3f */
+};
+
+/* Type 2: bridge
+ *
+ * child is the address of the nested SDB table
+ */
+struct sdb_bridge {
+        uint64_t                sdb_child;      /* 0x00-0x07 */
+        struct sdb_component    sdb_component;  /* 0x08-0x3f */
+};
+
+/* Type 0x80: integration
+ *
+ * all types with bit 7 set are meta-information, so
+ * software can ignore the types it doesn't know. Here we
+ * just provide product information for an aggregate device
+ */
+struct sdb_integration {
+        uint8_t                 reserved[24];   /* 0x00-0x17 */
+        struct sdb_product      product;        /* 0x08-0x3f */
+};
+
+/* Type 0x81: Top module repository url
+ *
+ * again, an informative field that software can ignore
+ */
+struct sdb_repo_url {
+        uint8_t                 repo_url[63];   /* 0x00-0x3e */
+        uint8_t                 record_type;    /* 0x3f */
+};
+
+/* Type 0x82: Synthesis tool information
+ *
+ * this informative record
+ */
+struct sdb_synthesis {
+        uint8_t                 syn_name[16];   /* 0x00-0x0f */
+        uint8_t                 commit_id[16];  /* 0x10-0x1f */
+        uint8_t                 tool_name[8];   /* 0x20-0x27 */
+        uint32_t                tool_version;   /* 0x28-0x2b */
+        uint32_t                date;           /* 0x2c-0x2f */
+        uint8_t                 user_name[15];  /* 0x30-0x3e */
+        uint8_t                 record_type;    /* 0x3f */
+};
+
+/* Type 0xff: empty
+ *
+ * this allows keeping empty slots during development,
+ * so they can be filled later with minimal efforts and
+ * no misleading description is ever shipped -- hopefully.
+ * It can also be used to pad a table to a desired length.
+ */
+struct sdb_empty {
+        uint8_t                 reserved[63];   /* 0x00-0x3e */
+        uint8_t                 record_type;    /* 0x3f */
+};
+
+/* The type of bus, for bus-specific flags */
+enum sdb_bus_type {
+        sdb_wishbone = 0x00,
+        sdb_data     = 0x01,
+};
+
+#define SDB_WB_WIDTH_MASK       0x0f
+#define SDB_WB_ACCESS8                  0x01
+#define SDB_WB_ACCESS16                 0x02
+#define SDB_WB_ACCESS32                 0x04
+#define SDB_WB_ACCESS64                 0x08
+#define SDB_WB_LITTLE_ENDIAN    0x80
+
+#define SDB_DATA_READ           0x04
+#define SDB_DATA_WRITE          0x02
+#define SDB_DATA_EXEC           0x01
+
+#endif /* __SDB_H__ */
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index 87d4bbc773fc..b98291ac7f14 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -31,6 +31,13 @@
 #include <linux/sysrq.h>
 #include <uapi/linux/serial_core.h>
 
+#ifdef CONFIG_SERIAL_CORE_CONSOLE
+#define uart_console(port) \
+        ((port)->cons && (port)->cons->index == (port)->line)
+#else
+#define uart_console(port)      (0)
+#endif
+
 struct uart_port;
 struct serial_struct;
 struct device;
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 9c676eae3968..dec1748cd002 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -627,6 +627,7 @@ static inline struct rtable *skb_rtable(const struct sk_buff *skb)
 }
 
 extern void kfree_skb(struct sk_buff *skb);
+extern void kfree_skb_list(struct sk_buff *segs);
 extern void skb_tx_error(struct sk_buff *skb);
 extern void consume_skb(struct sk_buff *skb);
 extern void            __kfree_skb(struct sk_buff *skb);
diff --git a/include/linux/splice.h b/include/linux/splice.h
index 09a545a7dfa3..74575cbf2d6f 100644
--- a/include/linux/splice.h
+++ b/include/linux/splice.h
@@ -35,6 +35,7 @@ struct splice_desc {
                 void *data;             /* cookie */
         } u;
         loff_t pos;                     /* file position */
+        loff_t *opos;                   /* sendfile: output position */
         size_t num_spliced;             /* number of bytes already spliced */
         bool need_wakeup;               /* need to wake up writer */
 };
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 8780bd2a272a..01ac30efd6a6 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -272,7 +272,6 @@ struct tty_struct {
 #define N_TTY_BUF_SIZE 4096
 
         unsigned char closing:1;
-        unsigned short minimum_to_wake;
         unsigned char *write_buf;
         int write_cnt;
         /* If the tty has a pending do_SAK, queue it here - akpm */
@@ -309,8 +308,6 @@ struct tty_file_private {
 #define TTY_LDISC               9       /* Line discipline attached */
 #define TTY_LDISC_CHANGING      10      /* Line discipline changing */
 #define TTY_LDISC_OPEN          11      /* Line discipline is open */
-#define TTY_HW_COOK_OUT         14      /* Hardware can do output cooking */
-#define TTY_HW_COOK_IN          15      /* Hardware can do input cooking */
 #define TTY_PTY_LOCK            16      /* pty private */
 #define TTY_NO_WRITE_SPLIT      17      /* Preserve write boundaries to driver */
 #define TTY_HUPPED              18      /* Post driver->hangup() */
diff --git a/include/linux/tty_ldisc.h b/include/linux/tty_ldisc.h
index 58390c73df8b..a1b048999821 100644
--- a/include/linux/tty_ldisc.h
+++ b/include/linux/tty_ldisc.h
@@ -100,6 +100,11 @@
  *      seek to perform this action quickly but should wait until
  *      any pending driver I/O is completed.
  *
+ * void (*fasync)(struct tty_struct *, int on)
+ *
+ *      Notify line discipline when signal-driven I/O is enabled or
+ *      disabled.
+ *
  * void (*dcd_change)(struct tty_struct *tty, unsigned int status)
  *
  *      Tells the discipline that the DCD pin has changed its status.
@@ -110,6 +115,52 @@
 #include <linux/wait.h>
 #include <linux/wait.h>
 
+
+/*
+ * the semaphore definition
+ */
+struct ld_semaphore {
+        long                    count;
+        raw_spinlock_t          wait_lock;
+        unsigned int            wait_readers;
+        struct list_head        read_wait;
+        struct list_head        write_wait;
+#ifdef CONFIG_DEBUG_LOCK_ALLOC
+        struct lockdep_map      dep_map;
+#endif
+};
+
+extern void __init_ldsem(struct ld_semaphore *sem, const char *name,
+                         struct lock_class_key *key);
+
+#define init_ldsem(sem)                                         \
+do {                                                            \
+        static struct lock_class_key __key;                     \
+                                                                \
+        __init_ldsem((sem), #sem, &__key);                      \
+} while (0)
+
+
+extern int ldsem_down_read(struct ld_semaphore *sem, long timeout);
+extern int ldsem_down_read_trylock(struct ld_semaphore *sem);
+extern int ldsem_down_write(struct ld_semaphore *sem, long timeout);
+extern int ldsem_down_write_trylock(struct ld_semaphore *sem);
+extern void ldsem_up_read(struct ld_semaphore *sem);
+extern void ldsem_up_write(struct ld_semaphore *sem);
+
+#ifdef CONFIG_DEBUG_LOCK_ALLOC
+extern int ldsem_down_read_nested(struct ld_semaphore *sem, int subclass,
+                                  long timeout);
+extern int ldsem_down_write_nested(struct ld_semaphore *sem, int subclass,
+                                   long timeout);
+#else
+# define ldsem_down_read_nested(sem, subclass, timeout)         \
+                ldsem_down_read(sem, timeout)
+# define ldsem_down_write_nested(sem, subclass, timeout)        \
+                ldsem_down_write(sem, timeout)
+#endif
+
+
 struct tty_ldisc_ops {
         int     magic;
         char    *name;
@@ -143,6 +194,7 @@ struct tty_ldisc_ops {
                                char *fp, int count);
         void    (*write_wakeup)(struct tty_struct *);
         void    (*dcd_change)(struct tty_struct *, unsigned int);
+        void    (*fasync)(struct tty_struct *tty, int on);
 
         struct  module *owner;
 
diff --git a/include/linux/usb.h b/include/linux/usb.h
index a0bee5a28d1a..a232b7ece1f6 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -394,6 +394,22 @@ enum usb_port_connect_type {
 };
 
 /*
+ * USB 2.0 Link Power Management (LPM) parameters.
+ */
+struct usb2_lpm_parameters {
+        /* Best effort service latency indicate how long the host will drive
+         * resume on an exit from L1.
+         */
+        unsigned int besl;
+
+        /* Timeout value in microseconds for the L1 inactivity (LPM) timer.
+         * When the timer counts to zero, the parent hub will initiate a LPM
+         * transition to L1.
+         */
+        int timeout;
+};
+
+/*
  * USB 3.0 Link Power Management (LPM) parameters.
  *
  * PEL and SEL are USB 3.0 Link PM latencies for device-initiated LPM exit.
@@ -468,6 +484,7 @@ struct usb3_lpm_parameters {
  * @wusb: device is Wireless USB
  * @lpm_capable: device supports LPM
  * @usb2_hw_lpm_capable: device can perform USB2 hardware LPM
+ * @usb2_hw_lpm_besl_capable: device can perform USB2 hardware BESL LPM
  * @usb2_hw_lpm_enabled: USB2 hardware LPM enabled
  * @usb3_lpm_enabled: USB3 hardware LPM enabled
  * @string_langid: language ID for strings
@@ -487,6 +504,7 @@ struct usb3_lpm_parameters {
  *      specific data for the device.
  * @slot_id: Slot ID assigned by xHCI
  * @removable: Device can be physically removed from this port
+ * @l1_params: best effor service latency for USB2 L1 LPM state, and L1 timeout.
  * @u1_params: exit latencies for USB3 U1 LPM state, and hub-initiated timeout.
  * @u2_params: exit latencies for USB3 U2 LPM state, and hub-initiated timeout.
  * @lpm_disable_count: Ref count used by usb_disable_lpm() and usb_enable_lpm()
@@ -538,6 +556,7 @@ struct usb_device {
         unsigned wusb:1;
         unsigned lpm_capable:1;
         unsigned usb2_hw_lpm_capable:1;
+        unsigned usb2_hw_lpm_besl_capable:1;
         unsigned usb2_hw_lpm_enabled:1;
         unsigned usb3_lpm_enabled:1;
         int string_langid;
@@ -566,6 +585,7 @@ struct usb_device {
         struct wusb_dev *wusb_dev;
         int slot_id;
         enum usb_device_removable removable;
+        struct usb2_lpm_parameters l1_params;
         struct usb3_lpm_parameters u1_params;
         struct usb3_lpm_parameters u2_params;
         unsigned lpm_disable_count;
@@ -717,6 +737,7 @@ const struct usb_device_id *usb_match_id(struct usb_interface *interface,
 extern int usb_match_one_id(struct usb_interface *interface,
                             const struct usb_device_id *id);
 
+extern int usb_for_each_dev(void *data, int (*fn)(struct usb_device *, void *));
 extern struct usb_interface *usb_find_interface(struct usb_driver *drv,
                 int minor);
 extern struct usb_interface *usb_ifnum_to_if(const struct usb_device *dev,
diff --git a/include/linux/usb/chipidea.h b/include/linux/usb/chipidea.h
index 544825dde823..25629948c842 100644
--- a/include/linux/usb/chipidea.h
+++ b/include/linux/usb/chipidea.h
@@ -7,32 +7,33 @@
 
 #include <linux/usb/otg.h>
 
-struct ci13xxx;
-struct ci13xxx_platform_data {
+struct ci_hdrc;
+struct ci_hdrc_platform_data {
         const char      *name;
         /* offset of the capability registers */
         uintptr_t        capoffset;
         unsigned         power_budget;
         struct usb_phy  *phy;
+        enum usb_phy_interface phy_mode;
         unsigned long    flags;
-#define CI13XXX_REGS_SHARED             BIT(0)
-#define CI13XXX_REQUIRE_TRANSCEIVER     BIT(1)
-#define CI13XXX_PULLUP_ON_VBUS          BIT(2)
-#define CI13XXX_DISABLE_STREAMING       BIT(3)
-
-#define CI13XXX_CONTROLLER_RESET_EVENT          0
-#define CI13XXX_CONTROLLER_STOPPED_EVENT        1
-        void    (*notify_event) (struct ci13xxx *ci, unsigned event);
+#define CI_HDRC_REGS_SHARED             BIT(0)
+#define CI_HDRC_REQUIRE_TRANSCEIVER     BIT(1)
+#define CI_HDRC_PULLUP_ON_VBUS          BIT(2)
+#define CI_HDRC_DISABLE_STREAMING       BIT(3)
+        enum usb_dr_mode        dr_mode;
+#define CI_HDRC_CONTROLLER_RESET_EVENT          0
+#define CI_HDRC_CONTROLLER_STOPPED_EVENT        1
+        void    (*notify_event) (struct ci_hdrc *ci, unsigned event);
 };
 
 /* Default offset of capability registers */
 #define DEF_CAPOFFSET           0x100
 
-/* Add ci13xxx device */
-struct platform_device *ci13xxx_add_device(struct device *dev,
+/* Add ci hdrc device */
+struct platform_device *ci_hdrc_add_device(struct device *dev,
                         struct resource *res, int nres,
-                        struct ci13xxx_platform_data *platdata);
-/* Remove ci13xxx device */
-void ci13xxx_remove_device(struct platform_device *pdev);
+                        struct ci_hdrc_platform_data *platdata);
+/* Remove ci hdrc device */
+void ci_hdrc_remove_device(struct platform_device *pdev);
 
 #endif
diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h
index f5f5c7dfda90..1e88377e22f4 100644
--- a/include/linux/usb/hcd.h
+++ b/include/linux/usb/hcd.h
@@ -218,6 +218,7 @@ struct hc_driver {
 #define HCD_SHARED      0x0004          /* Two (or more) usb_hcds share HW */
 #define HCD_USB11       0x0010          /* USB 1.1 */
 #define HCD_USB2        0x0020          /* USB 2.0 */
+#define HCD_USB25       0x0030          /* Wireless USB 1.0 (USB 2.5)*/
 #define HCD_USB3        0x0040          /* USB 3.0 */
 #define HCD_MASK        0x0070
 
diff --git a/include/linux/usb/of.h b/include/linux/usb/of.h
new file mode 100644
index 000000000000..a0ef405368b8
--- /dev/null
+++ b/include/linux/usb/of.h
@@ -0,0 +1,32 @@
+/*
+ * OF helpers for usb devices.
+ *
+ * This file is released under the GPLv2
+ */
+
+#ifndef __LINUX_USB_OF_H
+#define __LINUX_USB_OF_H
+
+#include <linux/usb/otg.h>
+#include <linux/usb/phy.h>
+
+#if IS_ENABLED(CONFIG_OF)
+enum usb_dr_mode of_usb_get_dr_mode(struct device_node *np);
+#else
+static inline enum usb_dr_mode of_usb_get_dr_mode(struct device_node *np)
+{
+        return USB_DR_MODE_UNKNOWN;
+}
+#endif
+
+#if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_USB_PHY)
+enum usb_phy_interface of_usb_get_phy_mode(struct device_node *np);
+#else
+static inline enum usb_phy_interface of_usb_get_phy_mode(struct device_node *np)
+{
+        return USBPHY_INTERFACE_MODE_UNKNOWN;
+}
+
+#endif
+
+#endif /* __LINUX_USB_OF_H */
diff --git a/include/linux/usb/otg.h b/include/linux/usb/otg.h
index 291e01ba32e5..154332b7c8c0 100644
--- a/include/linux/usb/otg.h
+++ b/include/linux/usb/otg.h
@@ -92,4 +92,11 @@ otg_start_srp(struct usb_otg *otg)
 /* for OTG controller drivers (and maybe other stuff) */
 extern int usb_bus_start_enum(struct usb_bus *bus, unsigned port_num);
 
+enum usb_dr_mode {
+        USB_DR_MODE_UNKNOWN,
+        USB_DR_MODE_HOST,
+        USB_DR_MODE_PERIPHERAL,
+        USB_DR_MODE_OTG,
+};
+
 #endif /* __LINUX_USB_OTG_H */
diff --git a/include/linux/usb/phy.h b/include/linux/usb/phy.h
index 6b5978f57633..44036808bf0f 100644
--- a/include/linux/usb/phy.h
+++ b/include/linux/usb/phy.h
@@ -12,6 +12,15 @@
 #include <linux/notifier.h>
 #include <linux/usb.h>
 
+enum usb_phy_interface {
+        USBPHY_INTERFACE_MODE_UNKNOWN,
+        USBPHY_INTERFACE_MODE_UTMI,
+        USBPHY_INTERFACE_MODE_UTMIW,
+        USBPHY_INTERFACE_MODE_ULPI,
+        USBPHY_INTERFACE_MODE_SERIAL,
+        USBPHY_INTERFACE_MODE_HSIC,
+};
+
 enum usb_phy_events {
         USB_EVENT_NONE,         /* no events or cable disconnected */
         USB_EVENT_VBUS,         /* vbus valid event */
diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h
index 302ddf55d2da..d528b8045150 100644
--- a/include/linux/usb/serial.h
+++ b/include/linux/usb/serial.h
@@ -19,10 +19,6 @@
 #include <linux/sysrq.h>
 #include <linux/kfifo.h>
 
-#define SERIAL_TTY_MAJOR        188     /* Nice legal number now */
-#define SERIAL_TTY_MINORS       254     /* loads of devices :) */
-#define SERIAL_TTY_NO_MINOR     255     /* No minor was assigned */
-
 /* The maximum number of ports one device can grab at once */
 #define MAX_NUM_PORTS           8
 
@@ -37,7 +33,8 @@
  * @serial: pointer back to the struct usb_serial owner of this port.
  * @port: pointer to the corresponding tty_port for this port.
  * @lock: spinlock to grab when updating portions of this structure.
- * @number: the number of the port (the minor number).
+ * @minor: the minor number of the port
+ * @port_number: the struct usb_serial port number of this port (starts at 0)
  * @interrupt_in_buffer: pointer to the interrupt in buffer for this port.
  * @interrupt_in_urb: pointer to the interrupt in struct urb for this port.
  * @interrupt_in_endpointAddress: endpoint address for the interrupt in pipe
@@ -80,7 +77,8 @@ struct usb_serial_port {
         struct usb_serial       *serial;
         struct tty_port         port;
         spinlock_t              lock;
-        unsigned char           number;
+        u32                     minor;
+        u8                      port_number;
 
         unsigned char           *interrupt_in_buffer;
         struct urb              *interrupt_in_urb;
@@ -140,7 +138,6 @@ static inline void usb_set_serial_port_data(struct usb_serial_port *port,
  * @dev: pointer to the struct usb_device for this device
  * @type: pointer to the struct usb_serial_driver for this device
  * @interface: pointer to the struct usb_interface for this device
- * @minor: the starting minor number for this device
  * @num_ports: the number of ports this device has
  * @num_interrupt_in: number of interrupt in endpoints we have
  * @num_interrupt_out: number of interrupt out endpoints we have
@@ -159,7 +156,7 @@ struct usb_serial {
         unsigned char                   disconnected:1;
         unsigned char                   suspending:1;
         unsigned char                   attached:1;
-        unsigned char                   minor;
+        unsigned char                   minors_reserved:1;
         unsigned char                   num_ports;
         unsigned char                   num_port_pointers;
         char                            num_interrupt_in;
@@ -319,7 +316,7 @@ static inline void usb_serial_console_disconnect(struct usb_serial *serial) {}
 #endif
 
 /* Functions needed by other parts of the usbserial core */
-extern struct usb_serial *usb_serial_get_by_index(unsigned int minor);
+extern struct usb_serial_port *usb_serial_port_get_by_minor(unsigned int minor);
 extern void usb_serial_put(struct usb_serial *serial);
 extern int usb_serial_generic_open(struct tty_struct *tty,
         struct usb_serial_port *port);
diff --git a/include/linux/usb/tegra_usb_phy.h b/include/linux/usb/tegra_usb_phy.h
index 1b7519a8c0bf..d2ca919a5b73 100644
--- a/include/linux/usb/tegra_usb_phy.h
+++ b/include/linux/usb/tegra_usb_phy.h
@@ -42,6 +42,7 @@ enum tegra_usb_phy_port_speed {
 enum tegra_usb_phy_mode {
         TEGRA_USB_PHY_MODE_DEVICE,
         TEGRA_USB_PHY_MODE_HOST,
+        TEGRA_USB_PHY_MODE_OTG,
 };
 
 struct tegra_xtal_freq;
@@ -61,14 +62,10 @@ struct tegra_usb_phy {
         struct device *dev;
         bool is_legacy_phy;
         bool is_ulpi_phy;
-        void (*set_pts)(struct usb_phy *x, u8 pts_val);
-        void (*set_phcd)(struct usb_phy *x, bool enable);
+        int reset_gpio;
 };
 
-struct tegra_usb_phy *tegra_usb_phy_open(struct device *dev, int instance,
-        void __iomem *regs, void *config, enum tegra_usb_phy_mode phy_mode,
-        void (*set_pts)(struct usb_phy *x, u8 pts_val),
-        void (*set_phcd)(struct usb_phy *x, bool enable));
+struct usb_phy *tegra_usb_get_phy(struct device_node *dn);
 
 void tegra_usb_phy_preresume(struct usb_phy *phy);
 
diff --git a/include/linux/usb/wusb-wa.h b/include/linux/usb/wusb-wa.h
index f9dec37f617b..6be985b2a434 100644
--- a/include/linux/usb/wusb-wa.h
+++ b/include/linux/usb/wusb-wa.h
@@ -92,11 +92,20 @@ struct usb_rpipe_descriptor {
         __le16  wRPipeIndex;
         __le16  wRequests;
         __le16  wBlocks;                /* rw if 0 */
-        __le16  wMaxPacketSize;         /* rw? */
-        u8      bHSHubAddress;          /* reserved: 0 */
-        u8      bHSHubPort;             /* ??? FIXME ??? */
+        __le16  wMaxPacketSize;         /* rw */
+        union {
+                u8      dwa_bHSHubAddress;              /* rw: DWA. */
+                u8      hwa_bMaxBurst;                  /* rw: HWA. */
+        };
+        union {
+                u8      dwa_bHSHubPort;         /*  rw: DWA. */
+                u8      hwa_bDeviceInfoIndex;   /*  rw: HWA. */
+        };
         u8      bSpeed;                 /* rw: xfer rate 'enum uwb_phy_rate' */
-        u8      bDeviceAddress;         /* rw: Target device address */
+        union {
+                u8 dwa_bDeviceAddress;  /* rw: DWA Target device address. */
+                u8 hwa_reserved;                /* rw: HWA. */
+        };
         u8      bEndpointAddress;       /* rw: Target EP address */
         u8      bDataSequence;          /* ro: Current Data sequence */
         __le32  dwCurrentWindow;        /* ro */
diff --git a/include/linux/vt_kern.h b/include/linux/vt_kern.h
index 0d33fca48774..8d7634247fb4 100644
--- a/include/linux/vt_kern.h
+++ b/include/linux/vt_kern.h
@@ -133,8 +133,6 @@ void change_console(struct vc_data *new_vc);
 void reset_vc(struct vc_data *vc);
 extern int do_unbind_con_driver(const struct consw *csw, int first, int last,
                              int deflt);
-extern int unbind_con_driver(const struct consw *csw, int first, int last,
-                             int deflt);
 int vty_init(const struct file_operations *console_fops);
 
 static inline bool vt_force_oops_output(struct vc_data *vc)
diff --git a/include/linux/vtime.h b/include/linux/vtime.h
index 71a5782d8c59..b1dd2db80076 100644
--- a/include/linux/vtime.h
+++ b/include/linux/vtime.h
@@ -34,7 +34,7 @@ static inline void vtime_user_exit(struct task_struct *tsk)
 }
 extern void vtime_guest_enter(struct task_struct *tsk);
 extern void vtime_guest_exit(struct task_struct *tsk);
-extern void vtime_init_idle(struct task_struct *tsk);
+extern void vtime_init_idle(struct task_struct *tsk, int cpu);
 #else
 static inline void vtime_account_irq_exit(struct task_struct *tsk)
 {
@@ -45,7 +45,7 @@ static inline void vtime_user_enter(struct task_struct *tsk) { }
 static inline void vtime_user_exit(struct task_struct *tsk) { }
 static inline void vtime_guest_enter(struct task_struct *tsk) { }
 static inline void vtime_guest_exit(struct task_struct *tsk) { }
-static inline void vtime_init_idle(struct task_struct *tsk) { }
+static inline void vtime_init_idle(struct task_struct *tsk, int cpu) { }
 #endif
 
 #ifdef CONFIG_IRQ_TIME_ACCOUNTING
diff --git a/include/linux/wait.h b/include/linux/wait.h
index 1133695eb067..f487a4750b7f 100644
--- a/include/linux/wait.h
+++ b/include/linux/wait.h
@@ -23,6 +23,7 @@ struct __wait_queue {
 struct wait_bit_key {
         void *flags;
         int bit_nr;
+#define WAIT_ATOMIC_T_BIT_NR -1
 };
 
 struct wait_bit_queue {
@@ -60,6 +61,9 @@ struct task_struct;
 #define __WAIT_BIT_KEY_INITIALIZER(word, bit)                           \
         { .flags = word, .bit_nr = bit, }
 
+#define __WAIT_ATOMIC_T_KEY_INITIALIZER(p)                              \
+        { .flags = p, .bit_nr = WAIT_ATOMIC_T_BIT_NR, }
+
 extern void __init_waitqueue_head(wait_queue_head_t *q, const char *name, struct lock_class_key *);
 
 #define init_waitqueue_head(q)                          \
@@ -146,8 +150,10 @@ void __wake_up_bit(wait_queue_head_t *, void *, int);
 int __wait_on_bit(wait_queue_head_t *, struct wait_bit_queue *, int (*)(void *), unsigned);
 int __wait_on_bit_lock(wait_queue_head_t *, struct wait_bit_queue *, int (*)(void *), unsigned);
 void wake_up_bit(void *, int);
+void wake_up_atomic_t(atomic_t *);
 int out_of_line_wait_on_bit(void *, int, int (*)(void *), unsigned);
 int out_of_line_wait_on_bit_lock(void *, int, int (*)(void *), unsigned);
+int out_of_line_wait_on_atomic_t(atomic_t *, int (*)(atomic_t *), unsigned);
 wait_queue_head_t *bit_waitqueue(void *, int);
 
 #define wake_up(x)                      __wake_up(x, TASK_NORMAL, 1, NULL)
@@ -902,5 +908,23 @@ static inline int wait_on_bit_lock(void *word, int bit,
                 return 0;
         return out_of_line_wait_on_bit_lock(word, bit, action, mode);
 }
+
+/**
+ * wait_on_atomic_t - Wait for an atomic_t to become 0
+ * @val: The atomic value being waited on, a kernel virtual address
+ * @action: the function used to sleep, which may take special actions
+ * @mode: the task state to sleep in
+ *
+ * Wait for an atomic_t to become 0.  We abuse the bit-wait waitqueue table for
+ * the purpose of getting a waitqueue, but we set the key to a bit number
+ * outside of the target 'word'.
+ */
+static inline
+int wait_on_atomic_t(atomic_t *val, int (*action)(atomic_t *), unsigned mode)
+{
+        if (atomic_read(val) == 0)
+                return 0;
+        return out_of_line_wait_on_atomic_t(val, action, mode);
+}
         
 #endif
diff --git a/include/linux/writeback.h b/include/linux/writeback.h
index 579a5007c696..abfe11787af3 100644
--- a/include/linux/writeback.h
+++ b/include/linux/writeback.h
@@ -78,6 +78,7 @@ struct writeback_control {
         unsigned tagged_writepages:1;   /* tag-and-write to avoid livelock */
         unsigned for_reclaim:1;         /* Invoked from the page allocator */
         unsigned range_cyclic:1;        /* range_start is cyclic */
+        unsigned for_sync:1;            /* sync(2) WB_SYNC_ALL writeback */
 };
 
 /*