24 files changed, 281 insertions, 41 deletions

diff --git a/include/linux/atomic.h b/include/linux/atomic.h
new file mode 100644
index 000000000000..96c038e43d66
--- /dev/null
+++ b/include/linux/atomic.h
@@ -0,0 +1,37 @@
+#ifndef _LINUX_ATOMIC_H
+#define _LINUX_ATOMIC_H
+#include <asm/atomic.h>
+
+/**
+ * atomic_inc_not_zero_hint - increment if not null
+ * @v: pointer of type atomic_t
+ * @hint: probable value of the atomic before the increment
+ *
+ * This version of atomic_inc_not_zero() gives a hint of probable
+ * value of the atomic. This helps processor to not read the memory
+ * before doing the atomic read/modify/write cycle, lowering
+ * number of bus transactions on some arches.
+ *
+ * Returns: 0 if increment was not done, 1 otherwise.
+ */
+#ifndef atomic_inc_not_zero_hint
+static inline int atomic_inc_not_zero_hint(atomic_t *v, int hint)
+{
+        int val, c = hint;
+
+        /* sanity test, should be removed by compiler if hint is a constant */
+        if (!hint)
+                return atomic_inc_not_zero(v);
+
+        do {
+                val = atomic_cmpxchg(v, c, c + 1);
+                if (val == c)
+                        return 1;
+                c = val;
+        } while (c);
+
+        return 0;
+}
+#endif
+
+#endif /* _LINUX_ATOMIC_H */
diff --git a/include/linux/bio.h b/include/linux/bio.h
index ba679992d39b..35dcdb3589bc 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -66,10 +66,6 @@
 #define bio_offset(bio)         bio_iovec((bio))->bv_offset
 #define bio_segments(bio)       ((bio)->bi_vcnt - (bio)->bi_idx)
 #define bio_sectors(bio)        ((bio)->bi_size >> 9)
-#define bio_empty_barrier(bio) \
-        ((bio->bi_rw & REQ_HARDBARRIER) && \
-         !bio_has_data(bio) && \
-         !(bio->bi_rw & REQ_DISCARD))
 
 static inline unsigned int bio_cur_bytes(struct bio *bio)
 {
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index 0437ab6bb54c..46ad5197537a 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -122,7 +122,6 @@ enum rq_flag_bits {
         __REQ_FAILFAST_TRANSPORT, /* no driver retries of transport errors */
         __REQ_FAILFAST_DRIVER,  /* no driver retries of driver errors */
 
-        __REQ_HARDBARRIER,      /* may not be passed by drive either */
         __REQ_SYNC,             /* request is sync (sync write or read) */
         __REQ_META,             /* metadata io request */
         __REQ_DISCARD,          /* request to discard sectors */
@@ -159,7 +158,6 @@ enum rq_flag_bits {
 #define REQ_FAILFAST_DEV        (1 << __REQ_FAILFAST_DEV)
 #define REQ_FAILFAST_TRANSPORT  (1 << __REQ_FAILFAST_TRANSPORT)
 #define REQ_FAILFAST_DRIVER     (1 << __REQ_FAILFAST_DRIVER)
-#define REQ_HARDBARRIER         (1 << __REQ_HARDBARRIER)
 #define REQ_SYNC                (1 << __REQ_SYNC)
 #define REQ_META                (1 << __REQ_META)
 #define REQ_DISCARD             (1 << __REQ_DISCARD)
@@ -168,8 +166,8 @@ enum rq_flag_bits {
 #define REQ_FAILFAST_MASK \
         (REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | REQ_FAILFAST_DRIVER)
 #define REQ_COMMON_MASK \
-        (REQ_WRITE | REQ_FAILFAST_MASK | REQ_HARDBARRIER | REQ_SYNC | \
-         REQ_META | REQ_DISCARD | REQ_NOIDLE | REQ_FLUSH | REQ_FUA)
+        (REQ_WRITE | REQ_FAILFAST_MASK | REQ_SYNC | REQ_META | REQ_DISCARD | \
+         REQ_NOIDLE | REQ_FLUSH | REQ_FUA)
 #define REQ_CLONE_MASK          REQ_COMMON_MASK
 
 #define REQ_UNPLUG              (1 << __REQ_UNPLUG)
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 5027a599077d..aae86fd10c4f 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -552,8 +552,7 @@ static inline void blk_clear_queue_full(struct request_queue *q, int sync)
  * it already be started by driver.
  */
 #define RQ_NOMERGE_FLAGS        \
-        (REQ_NOMERGE | REQ_STARTED | REQ_HARDBARRIER | REQ_SOFTBARRIER | \
-         REQ_FLUSH | REQ_FUA)
+        (REQ_NOMERGE | REQ_STARTED | REQ_SOFTBARRIER | REQ_FLUSH | REQ_FUA)
 #define rq_mergeable(rq)        \
         (!((rq)->cmd_flags & RQ_NOMERGE_FLAGS) && \
          (((rq)->cmd_flags & REQ_DISCARD) || \
diff --git a/include/linux/drbd.h b/include/linux/drbd.h
index 9b2a0158f399..ef44c7a0638c 100644
--- a/include/linux/drbd.h
+++ b/include/linux/drbd.h
@@ -53,7 +53,7 @@
 
 
 extern const char *drbd_buildtag(void);
-#define REL_VERSION "8.3.9rc2"
+#define REL_VERSION "8.3.9"
 #define API_VERSION 88
 #define PRO_VERSION_MIN 86
 #define PRO_VERSION_MAX 95
diff --git a/include/linux/highmem.h b/include/linux/highmem.h
index e9138198e823..b676c585574e 100644
--- a/include/linux/highmem.h
+++ b/include/linux/highmem.h
@@ -5,6 +5,7 @@
 #include <linux/kernel.h>
 #include <linux/mm.h>
 #include <linux/uaccess.h>
+#include <linux/hardirq.h>
 
 #include <asm/cacheflush.h>
 
diff --git a/include/linux/i2c/adp5588.h b/include/linux/i2c/adp5588.h
index 3c5d6b6e765c..cec17cf6cac2 100644
--- a/include/linux/i2c/adp5588.h
+++ b/include/linux/i2c/adp5588.h
@@ -1,7 +1,7 @@
 /*
  * Analog Devices ADP5588 I/O Expander and QWERTY Keypad Controller
  *
- * Copyright 2009 Analog Devices Inc.
+ * Copyright 2009-2010 Analog Devices Inc.
  *
  * Licensed under the GPL-2 or later.
  */
@@ -77,13 +77,26 @@
  /* Configuration Register1 */
 #define ADP5588_AUTO_INC        (1 << 7)
 #define ADP5588_GPIEM_CFG       (1 << 6)
+#define ADP5588_OVR_FLOW_M      (1 << 5)
 #define ADP5588_INT_CFG         (1 << 4)
+#define ADP5588_OVR_FLOW_IEN    (1 << 3)
+#define ADP5588_K_LCK_IM        (1 << 2)
 #define ADP5588_GPI_IEN         (1 << 1)
+#define ADP5588_KE_IEN          (1 << 0)
 
 /* Interrupt Status Register */
+#define ADP5588_CMP2_INT        (1 << 5)
+#define ADP5588_CMP1_INT        (1 << 4)
+#define ADP5588_OVR_FLOW_INT    (1 << 3)
+#define ADP5588_K_LCK_INT       (1 << 2)
 #define ADP5588_GPI_INT         (1 << 1)
 #define ADP5588_KE_INT          (1 << 0)
 
+/* Key Lock and Event Counter Register */
+#define ADP5588_K_LCK_EN        (1 << 6)
+#define ADP5588_LCK21           0x30
+#define ADP5588_KEC             0xF
+
 #define ADP5588_MAXGPIO         18
 #define ADP5588_BANK(offs)      ((offs) >> 3)
 #define ADP5588_BIT(offs)       (1u << ((offs) & 0x7))
diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h
index c2f3a72712ce..635e1faec412 100644
--- a/include/linux/if_vlan.h
+++ b/include/linux/if_vlan.h
@@ -339,6 +339,31 @@ static inline int vlan_get_tag(const struct sk_buff *skb, u16 *vlan_tci)
         }
 }
 
+/**
+ * vlan_get_protocol - get protocol EtherType.
+ * @skb: skbuff to query
+ *
+ * Returns the EtherType of the packet, regardless of whether it is
+ * vlan encapsulated (normal or hardware accelerated) or not.
+ */
+static inline __be16 vlan_get_protocol(const struct sk_buff *skb)
+{
+        __be16 protocol = 0;
+
+        if (vlan_tx_tag_present(skb) ||
+             skb->protocol != cpu_to_be16(ETH_P_8021Q))
+                protocol = skb->protocol;
+        else {
+                __be16 proto, *protop;
+                protop = skb_header_pointer(skb, offsetof(struct vlan_ethhdr,
+                                                h_vlan_encapsulated_proto),
+                                                sizeof(proto), &proto);
+                if (likely(protop))
+                        protocol = *protop;
+        }
+
+        return protocol;
+}
 #endif /* __KERNEL__ */
 
 /* VLAN IOCTLs are found in sockios.h */
diff --git a/include/linux/input.h b/include/linux/input.h
index 51af441f3a21..6ef44465db8d 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -1406,6 +1406,8 @@ static inline void input_set_drvdata(struct input_dev *dev, void *data)
 int __must_check input_register_device(struct input_dev *);
 void input_unregister_device(struct input_dev *);
 
+void input_reset_device(struct input_dev *);
+
 int __must_check input_register_handler(struct input_handler *);
 void input_unregister_handler(struct input_handler *);
 
@@ -1421,7 +1423,7 @@ void input_release_device(struct input_handle *);
 int input_open_device(struct input_handle *);
 void input_close_device(struct input_handle *);
 
-int input_flush_device(struct input_handle* handle, struct file* file);
+int input_flush_device(struct input_handle *handle, struct file *file);
 
 void input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value);
 void input_inject_event(struct input_handle *handle, unsigned int type, unsigned int code, int value);
diff --git a/include/linux/iocontext.h b/include/linux/iocontext.h
index 3e70b21884a9..b2eee896dcbc 100644
--- a/include/linux/iocontext.h
+++ b/include/linux/iocontext.h
@@ -76,7 +76,6 @@ int put_io_context(struct io_context *ioc);
 void exit_io_context(struct task_struct *task);
 struct io_context *get_io_context(gfp_t gfp_flags, int node);
 struct io_context *alloc_io_context(gfp_t gfp_flags, int node);
-void copy_io_context(struct io_context **pdst, struct io_context **psrc);
 #else
 static inline void exit_io_context(struct task_struct *task)
 {
diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index b526947bdf48..fc3da9e4da19 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -293,6 +293,7 @@ extern bool printk_timed_ratelimit(unsigned long *caller_jiffies,
                                    unsigned int interval_msec);
 
 extern int printk_delay_msec;
+extern int dmesg_restrict;
 
 /*
  * Print a one-time message (analogous to WARN_ONCE() et al):
diff --git a/include/linux/leds-lp5521.h b/include/linux/leds-lp5521.h
new file mode 100644
index 000000000000..38368d785f08
--- /dev/null
+++ b/include/linux/leds-lp5521.h
@@ -0,0 +1,47 @@
+/*
+ * LP5521 LED chip driver.
+ *
+ * Copyright (C) 2010 Nokia Corporation
+ *
+ * Contact: Samu Onkalo <samu.p.onkalo@nokia.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+#ifndef __LINUX_LP5521_H
+#define __LINUX_LP5521_H
+
+/* See Documentation/leds/leds-lp5521.txt */
+
+struct lp5521_led_config {
+        u8              chan_nr;
+        u8              led_current; /* mA x10, 0 if led is not connected */
+        u8              max_current;
+};
+
+#define LP5521_CLOCK_AUTO       0
+#define LP5521_CLOCK_INT        1
+#define LP5521_CLOCK_EXT        2
+
+struct lp5521_platform_data {
+        struct lp5521_led_config *led_config;
+        u8      num_channels;
+        u8      clock_mode;
+        int     (*setup_resources)(void);
+        void    (*release_resources)(void);
+        void    (*enable)(bool state);
+};
+
+#endif /* __LINUX_LP5521_H */
diff --git a/include/linux/leds-lp5523.h b/include/linux/leds-lp5523.h
new file mode 100644
index 000000000000..796747637b80
--- /dev/null
+++ b/include/linux/leds-lp5523.h
@@ -0,0 +1,47 @@
+/*
+ * LP5523 LED Driver
+ *
+ * Copyright (C) 2010 Nokia Corporation
+ *
+ * Contact: Samu Onkalo <samu.p.onkalo@nokia.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+#ifndef __LINUX_LP5523_H
+#define __LINUX_LP5523_H
+
+/* See Documentation/leds/leds-lp5523.txt */
+
+struct lp5523_led_config {
+        u8              chan_nr;
+        u8              led_current; /* mA x10, 0 if led is not connected */
+        u8              max_current;
+};
+
+#define LP5523_CLOCK_AUTO       0
+#define LP5523_CLOCK_INT        1
+#define LP5523_CLOCK_EXT        2
+
+struct lp5523_platform_data {
+        struct lp5523_led_config *led_config;
+        u8      num_channels;
+        u8      clock_mode;
+        int     (*setup_resources)(void);
+        void    (*release_resources)(void);
+        void    (*enable)(bool state);
+};
+
+#endif /* __LINUX_LP5523_H */
diff --git a/include/linux/leds.h b/include/linux/leds.h
index ba6986a11663..0f19df9e37b0 100644
--- a/include/linux/leds.h
+++ b/include/linux/leds.h
@@ -15,6 +15,7 @@
 #include <linux/list.h>
 #include <linux/spinlock.h>
 #include <linux/rwsem.h>
+#include <linux/timer.h>
 
 struct device;
 /*
@@ -45,10 +46,14 @@ struct led_classdev {
         /* Get LED brightness level */
         enum led_brightness (*brightness_get)(struct led_classdev *led_cdev);
 
-        /* Activate hardware accelerated blink, delays are in
-         * miliseconds and if none is provided then a sensible default
-         * should be chosen. The call can adjust the timings if it can't
-         * match the values specified exactly. */
+        /*
+         * Activate hardware accelerated blink, delays are in milliseconds
+         * and if both are zero then a sensible default should be chosen.
+         * The call should adjust the timings in that case and if it can't
+         * match the values specified exactly.
+         * Deactivate blinking again when the brightness is set to a fixed
+         * value via the brightness_set() callback.
+         */
         int             (*blink_set)(struct led_classdev *led_cdev,
                                      unsigned long *delay_on,
                                      unsigned long *delay_off);
@@ -57,6 +62,10 @@ struct led_classdev {
         struct list_head         node;                  /* LED Device list */
         const char              *default_trigger;       /* Trigger to use */
 
+        unsigned long            blink_delay_on, blink_delay_off;
+        struct timer_list        blink_timer;
+        int                      blink_brightness;
+
 #ifdef CONFIG_LEDS_TRIGGERS
         /* Protects the trigger data below */
         struct rw_semaphore      trigger_lock;
@@ -73,6 +82,36 @@ extern void led_classdev_unregister(struct led_classdev *led_cdev);
 extern void led_classdev_suspend(struct led_classdev *led_cdev);
 extern void led_classdev_resume(struct led_classdev *led_cdev);
 
+/**
+ * led_blink_set - set blinking with software fallback
+ * @led_cdev: the LED to start blinking
+ * @delay_on: the time it should be on (in ms)
+ * @delay_off: the time it should ble off (in ms)
+ *
+ * This function makes the LED blink, attempting to use the
+ * hardware acceleration if possible, but falling back to
+ * software blinking if there is no hardware blinking or if
+ * the LED refuses the passed values.
+ *
+ * Note that if software blinking is active, simply calling
+ * led_cdev->brightness_set() will not stop the blinking,
+ * use led_classdev_brightness_set() instead.
+ */
+extern void led_blink_set(struct led_classdev *led_cdev,
+                          unsigned long *delay_on,
+                          unsigned long *delay_off);
+/**
+ * led_brightness_set - set LED brightness
+ * @led_cdev: the LED to set
+ * @brightness: the brightness to set it to
+ *
+ * Set an LED's brightness, and, if necessary, cancel the
+ * software blink timer that implements blinking when the
+ * hardware doesn't.
+ */
+extern void led_brightness_set(struct led_classdev *led_cdev,
+                               enum led_brightness brightness);
+
 /*
  * LED Triggers
  */
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 072652d94d9f..d8fd2c23a1b9 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1554,6 +1554,11 @@ static inline void netif_tx_wake_all_queues(struct net_device *dev)
 
 static inline void netif_tx_stop_queue(struct netdev_queue *dev_queue)
 {
+        if (WARN_ON(!dev_queue)) {
+                printk(KERN_INFO "netif_stop_queue() cannot be called before "
+                       "register_netdev()");
+                return;
+        }
         set_bit(__QUEUE_STATE_XOFF, &dev_queue->state);
 }
 
diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h
index 89341c32631a..03317c8d4077 100644
--- a/include/linux/netfilter.h
+++ b/include/linux/netfilter.h
@@ -215,7 +215,7 @@ NF_HOOK_COND(uint8_t pf, unsigned int hook, struct sk_buff *skb,
         int ret;
 
         if (!cond ||
-            (ret = nf_hook_thresh(pf, hook, skb, in, out, okfn, INT_MIN) == 1))
+            ((ret = nf_hook_thresh(pf, hook, skb, in, out, okfn, INT_MIN)) == 1))
                 ret = okfn(skb);
         return ret;
 }
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 057bf22a8323..40150f345982 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -747,6 +747,16 @@ struct perf_event {
         u64                             tstamp_running;
         u64                             tstamp_stopped;
 
+        /*
+         * timestamp shadows the actual context timing but it can
+         * be safely used in NMI interrupt context. It reflects the
+         * context time as it was when the event was last scheduled in.
+         *
+         * ctx_time already accounts for ctx->timestamp. Therefore to
+         * compute ctx_time for a sample, simply add perf_clock().
+         */
+        u64                             shadow_ctx_time;
+
         struct perf_event_attr          attr;
         struct hw_perf_event            hw;
 
diff --git a/include/linux/pwm_backlight.h b/include/linux/pwm_backlight.h
index 01b3d759f1fc..e031e1a486d9 100644
--- a/include/linux/pwm_backlight.h
+++ b/include/linux/pwm_backlight.h
@@ -8,6 +8,7 @@ struct platform_pwm_backlight_data {
         int pwm_id;
         unsigned int max_brightness;
         unsigned int dft_brightness;
+        unsigned int lth_brightness;
         unsigned int pwm_period_ns;
         int (*init)(struct device *dev);
         int (*notify)(struct device *dev, int brightness);
diff --git a/include/linux/radix-tree.h b/include/linux/radix-tree.h
index a39cbed9ee17..ab2baa5c4884 100644
--- a/include/linux/radix-tree.h
+++ b/include/linux/radix-tree.h
@@ -34,19 +34,13 @@
  * needed for RCU lookups (because root->height is unreliable). The only
  * time callers need worry about this is when doing a lookup_slot under
  * RCU.
+ *
+ * Indirect pointer in fact is also used to tag the last pointer of a node
+ * when it is shrunk, before we rcu free the node. See shrink code for
+ * details.
  */
 #define RADIX_TREE_INDIRECT_PTR 1
-#define RADIX_TREE_RETRY ((void *)-1UL)
-
-static inline void *radix_tree_ptr_to_indirect(void *ptr)
-{
-        return (void *)((unsigned long)ptr | RADIX_TREE_INDIRECT_PTR);
-}
 
-static inline void *radix_tree_indirect_to_ptr(void *ptr)
-{
-        return (void *)((unsigned long)ptr & ~RADIX_TREE_INDIRECT_PTR);
-}
 #define radix_tree_indirect_to_ptr(ptr) \
         radix_tree_indirect_to_ptr((void __force *)(ptr))
 
@@ -140,16 +134,29 @@ do {									\
  *              removed.
  *
  * For use with radix_tree_lookup_slot().  Caller must hold tree at least read
- * locked across slot lookup and dereference.  More likely, will be used with
- * radix_tree_replace_slot(), as well, so caller will hold tree write locked.
+ * locked across slot lookup and dereference. Not required if write lock is
+ * held (ie. items cannot be concurrently inserted).
+ *
+ * radix_tree_deref_retry must be used to confirm validity of the pointer if
+ * only the read lock is held.
  */
 static inline void *radix_tree_deref_slot(void **pslot)
 {
-        void *ret = rcu_dereference(*pslot);
-        if (unlikely(radix_tree_is_indirect_ptr(ret)))
-                ret = RADIX_TREE_RETRY;
-        return ret;
+        return rcu_dereference(*pslot);
 }
+
+/**
+ * radix_tree_deref_retry       - check radix_tree_deref_slot
+ * @arg:        pointer returned by radix_tree_deref_slot
+ * Returns:     0 if retry is not required, otherwise retry is required
+ *
+ * radix_tree_deref_retry must be used with radix_tree_deref_slot.
+ */
+static inline int radix_tree_deref_retry(void *arg)
+{
+        return unlikely((unsigned long)arg & RADIX_TREE_INDIRECT_PTR);
+}
+
 /**
  * radix_tree_replace_slot      - replace item in a slot
  * @pslot:      pointer to slot, returned by radix_tree_lookup_slot
diff --git a/include/linux/resource.h b/include/linux/resource.h
index 88d36f9145ba..d01c96c1966e 100644
--- a/include/linux/resource.h
+++ b/include/linux/resource.h
@@ -2,6 +2,7 @@
 #define _LINUX_RESOURCE_H
 
 #include <linux/time.h>
+#include <linux/types.h>
 
 /*
  * Resource control/accounting header file for linux
diff --git a/include/linux/sunrpc/svc_xprt.h b/include/linux/sunrpc/svc_xprt.h
index bbdb680ffbe9..aea0d438e3c7 100644
--- a/include/linux/sunrpc/svc_xprt.h
+++ b/include/linux/sunrpc/svc_xprt.h
@@ -82,18 +82,28 @@ struct svc_xprt {
         struct net              *xpt_net;
 };
 
-static inline void register_xpt_user(struct svc_xprt *xpt, struct svc_xpt_user *u)
+static inline void unregister_xpt_user(struct svc_xprt *xpt, struct svc_xpt_user *u)
 {
         spin_lock(&xpt->xpt_lock);
-        list_add(&u->list, &xpt->xpt_users);
+        list_del_init(&u->list);
         spin_unlock(&xpt->xpt_lock);
 }
 
-static inline void unregister_xpt_user(struct svc_xprt *xpt, struct svc_xpt_user *u)
+static inline int register_xpt_user(struct svc_xprt *xpt, struct svc_xpt_user *u)
 {
         spin_lock(&xpt->xpt_lock);
-        list_del_init(&u->list);
+        if (test_bit(XPT_CLOSE, &xpt->xpt_flags)) {
+                /*
+                 * The connection is about to be deleted soon (or,
+                 * worse, may already be deleted--in which case we've
+                 * already notified the xpt_users).
+                 */
+                spin_unlock(&xpt->xpt_lock);
+                return -ENOTCONN;
+        }
+        list_add(&u->list, &xpt->xpt_users);
         spin_unlock(&xpt->xpt_lock);
+        return 0;
 }
 
 int     svc_reg_xprt_class(struct svc_xprt_class *);
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 2a754748dd5f..c7ea9bc8897c 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -50,7 +50,7 @@
 #define N_V253          19      /* Codec control over voice modem */
 #define N_CAIF          20      /* CAIF protocol for talking to modems */
 #define N_GSM0710       21      /* GSM 0710 Mux */
-#define N_TI_WL 22      /* for TI's WL BT, FM, GPS combo chips */
+#define N_TI_WL         22      /* for TI's WL BT, FM, GPS combo chips */
 
 /*
  * This character is the same as _POSIX_VDISABLE: it cannot be used as
diff --git a/include/linux/usb.h b/include/linux/usb.h
index 35fe6ab222bb..24300d8a1bc1 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -797,7 +797,7 @@ struct usbdrv_wrap {
  * @disconnect: Called when the interface is no longer accessible, usually
  *      because its device has been (or is being) disconnected or the
  *      driver module is being unloaded.
- * @ioctl: Used for drivers that want to talk to userspace through
+ * @unlocked_ioctl: Used for drivers that want to talk to userspace through
  *      the "usbfs" filesystem.  This lets devices provide ways to
  *      expose information to user space regardless of where they
  *      do (or don't) show up otherwise in the filesystem.
diff --git a/include/linux/usb/musb.h b/include/linux/usb/musb.h
index ee2dd1d506ed..2387f9fc8138 100644
--- a/include/linux/usb/musb.h
+++ b/include/linux/usb/musb.h
@@ -89,6 +89,8 @@ struct musb_hdrc_config {
         /* A GPIO controlling VRSEL in Blackfin */
         unsigned int    gpio_vrsel;
         unsigned int    gpio_vrsel_active;
+        /* musb CLKIN in Blackfin in MHZ */
+        unsigned char   clkin;
 #endif
 
 };