diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2008-05-20 21:16:20 +0400 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2008-07-03 01:06:23 +0400 |
| commit | f9c8154f367d471f1af56742fe8534f8458adb98 (patch) | |
| tree | 6625c2e4a82d5f772545ec606434d616a6ae3797 /drivers/input | |
| parent | dca67e9d3db27b090259b696e1166615f40099e2 (diff) | |
| download | linux-f9c8154f367d471f1af56742fe8534f8458adb98.tar.xz | |
mousedev: BKL pushdown
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/input')
| -rw-r--r-- | drivers/input/mousedev.c | 12 |
1 files changed, 10 insertions, 2 deletions
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; } |