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CAPI: BKL pushdown 

Put explicit lock_kernel() calls into capi_open()

Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Jonathan Corbet 2008-05-16 14:15:33 -06:00
parent b0061a0ec4
commit a237f3bbaa
1 changed files with 11 additions and 6 deletions
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17
drivers/isdn/capi/capi.c
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@ -20,6 +20,7 @@
#include <linux/signal.h>
#include <linux/mutex.h>
#include <linux/mm.h>
#include <linux/smp_lock.h>
#include <linux/timer.h>
#include <linux/wait.h>
#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
@ -983,13 +984,17 @@ capi_ioctl(struct inode *inode, struct file *file,
static int
capi_open(struct inode *inode, struct file *file)
{
int ret;
lock_kernel();
if (file->private_data)
return -EEXIST;
if ((file->private_data = capidev_alloc()) == NULL)
return -ENOMEM;
return nonseekable_open(inode, file);
ret = -EEXIST;
else if ((file->private_data = capidev_alloc()) == NULL)
ret = -ENOMEM;
else
ret = nonseekable_open(inode, file);
unlock_kernel();
return ret;
}
static int