Merge branch 'bkl-removal' of git://git.lwn.net/linux-2.6

* 'bkl-removal' of git://git.lwn.net/linux-2.6: (146 commits)
  IB/umad: BKL is not needed for ib_umad_open()
  IB/uverbs: BKL is not needed for ib_uverbs_open()
  bf561-coreb: BKL unneeded for open()
  Call fasync() functions without the BKL
  snd/PCM: fasync BKL pushdown
  ipmi: fasync BKL pushdown
  ecryptfs: fasync BKL pushdown
  Bluetooth VHCI: fasync BKL pushdown
  tty_io: fasync BKL pushdown
  tun: fasync BKL pushdown
  i2o: fasync BKL pushdown
  mpt: fasync BKL pushdown
  Remove BKL from remote_llseek v2
  Make FAT users happier by not deadlocking
  x86-mce: BKL pushdown
  vmwatchdog: BKL pushdown
  vmcp: BKL pushdown
  via-pmu: BKL pushdown
  uml-random: BKL pushdown
  uml-mmapper: BKL pushdown
  ...

5 files changed, 32 insertions, 7 deletions

diff --git a/drivers/input/input.c b/drivers/input/input.c
index 27006fc18305..408df0bd6be5 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -21,6 +21,7 @@
 #include <linux/device.h>
 #include <linux/mutex.h>
 #include <linux/rcupdate.h>
+#include <linux/smp_lock.h>
 
 MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
 MODULE_DESCRIPTION("Input core");
@@ -1588,13 +1589,17 @@ EXPORT_SYMBOL(input_unregister_handle);
 
 static int input_open_file(struct inode *inode, struct file *file)
 {
-        struct input_handler *handler = input_table[iminor(inode) >> 5];
+        struct input_handler *handler;
         const struct file_operations *old_fops, *new_fops = NULL;
         int err;
 
+        lock_kernel();
         /* No load-on-demand here? */
-        if (!handler || !(new_fops = fops_get(handler->fops)))
-                return -ENODEV;
+        handler = input_table[iminor(inode) >> 5];
+        if (!handler || !(new_fops = fops_get(handler->fops))) {
+                err = -ENODEV;
+                goto out;
+        }
 
         /*
          * That's _really_ odd. Usually NULL ->open means "nothing special",
@@ -1602,7 +1607,8 @@ static int input_open_file(struct inode *inode, struct file *file)
          */
         if (!new_fops->open) {
                 fops_put(new_fops);
-                return -ENODEV;
+                err = -ENODEV;
+                goto out;
         }
         old_fops = file->f_op;
         file->f_op = new_fops;
@@ -1614,6 +1620,8 @@ static int input_open_file(struct inode *inode, struct file *file)
                 file->f_op = fops_get(old_fops);
         }
         fops_put(old_fops);
+out:
+        unlock_kernel();
         return err;
 }
 
diff --git a/drivers/input/misc/hp_sdc_rtc.c b/drivers/input/misc/hp_sdc_rtc.c
index 45e5d05b01de..49d8abfe38fe 100644
--- a/drivers/input/misc/hp_sdc_rtc.c
+++ b/drivers/input/misc/hp_sdc_rtc.c
@@ -35,6 +35,7 @@
 
 #include <linux/hp_sdc.h>
 #include <linux/errno.h>
+#include <linux/smp_lock.h>
 #include <linux/types.h>
 #include <linux/init.h>
 #include <linux/module.h>
@@ -408,6 +409,7 @@ static unsigned int hp_sdc_rtc_poll(struct file *file, poll_table *wait)
 
 static int hp_sdc_rtc_open(struct inode *inode, struct file *file)
 {
+        cycle_kernel_lock();
         return 0;
 }
 
diff --git a/drivers/input/misc/uinput.c b/drivers/input/misc/uinput.c
index a56ad4ba8fe2..2bcfa0b35061 100644
--- a/drivers/input/misc/uinput.c
+++ b/drivers/input/misc/uinput.c
@@ -37,6 +37,7 @@
 #include <linux/fs.h>
 #include <linux/miscdevice.h>
 #include <linux/uinput.h>
+#include <linux/smp_lock.h>
 
 static int uinput_dev_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
 {
@@ -222,6 +223,7 @@ static int uinput_open(struct inode *inode, struct file *file)
         if (!newdev)
                 return -ENOMEM;
 
+        lock_kernel();
         mutex_init(&newdev->mutex);
         spin_lock_init(&newdev->requests_lock);
         init_waitqueue_head(&newdev->requests_waitq);
@@ -229,6 +231,7 @@ static int uinput_open(struct inode *inode, struct file *file)
         newdev->state = UIST_NEW_DEVICE;
 
         file->private_data = newdev;
+        unlock_kernel();
 
         return 0;
 }
diff --git a/drivers/input/mousedev.c b/drivers/input/mousedev.c
index b989748598ae..8137e50ded87 100644
--- a/drivers/input/mousedev.c
+++ b/drivers/input/mousedev.c
@@ -14,6 +14,7 @@
 #define MOUSEDEV_MIX            31
 
 #include <linux/slab.h>
+#include <linux/smp_lock.h>
 #include <linux/poll.h>
 #include <linux/module.h>
 #include <linux/init.h>
@@ -545,16 +546,21 @@ static int mousedev_open(struct inode *inode, struct file *file)
         if (i >= MOUSEDEV_MINORS)
                 return -ENODEV;
 
+        lock_kernel();
         error = mutex_lock_interruptible(&mousedev_table_mutex);
-        if (error)
+        if (error) {
+                unlock_kernel();
                 return error;
+        }
         mousedev = mousedev_table[i];
         if (mousedev)
                 get_device(&mousedev->dev);
         mutex_unlock(&mousedev_table_mutex);
 
-        if (!mousedev)
+        if (!mousedev) {
+                unlock_kernel();
                 return -ENODEV;
+        }
 
         client = kzalloc(sizeof(struct mousedev_client), GFP_KERNEL);
         if (!client) {
@@ -573,6 +579,7 @@ static int mousedev_open(struct inode *inode, struct file *file)
                 goto err_free_client;
 
         file->private_data = client;
+        unlock_kernel();
         return 0;
 
  err_free_client:
@@ -580,6 +587,7 @@ static int mousedev_open(struct inode *inode, struct file *file)
         kfree(client);
  err_put_mousedev:
         put_device(&mousedev->dev);
+        unlock_kernel();
         return error;
 }
 
diff --git a/drivers/input/serio/serio_raw.c b/drivers/input/serio/serio_raw.c
index 0403622ae267..c9397c8ee97e 100644
--- a/drivers/input/serio/serio_raw.c
+++ b/drivers/input/serio/serio_raw.c
@@ -10,6 +10,7 @@
  */
 
 #include <linux/slab.h>
+#include <linux/smp_lock.h>
 #include <linux/poll.h>
 #include <linux/module.h>
 #include <linux/serio.h>
@@ -81,9 +82,10 @@ static int serio_raw_open(struct inode *inode, struct file *file)
         struct serio_raw_list *list;
         int retval = 0;
 
+        lock_kernel();
         retval = mutex_lock_interruptible(&serio_raw_mutex);
         if (retval)
-                return retval;
+                goto out_bkl;
 
         if (!(serio_raw = serio_raw_locate(iminor(inode)))) {
                 retval = -ENODEV;
@@ -108,6 +110,8 @@ static int serio_raw_open(struct inode *inode, struct file *file)
 
 out:
         mutex_unlock(&serio_raw_mutex);
+out_bkl:
+        unlock_kernel();
         return retval;
 }