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mousedev: BKL pushdown 

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2008-05-20 19:16:20 +02:00 committed by Jonathan Corbet
parent dca67e9d3d
commit f9c8154f36
1 changed files with 10 additions and 2 deletions
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12
drivers/input/mousedev.c
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@ -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;
}