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mvme16x-rtc: BKL pushdown

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Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2008-05-20 19:16:22 +02:00 committed by Jonathan Corbet
parent f9c8154f36
commit e3e8e59dcd
1 changed files with 4 additions and 0 deletions
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4
arch/m68k/mvme16x/rtc.c
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@ -10,6 +10,7 @@
#include <linux/errno.h>
#include <linux/miscdevice.h>
#include <linux/slab.h>
#include <linux/smp_lock.h>
#include <linux/ioport.h>
#include <linux/capability.h>
#include <linux/fcntl.h>
@ -127,11 +128,14 @@ static int rtc_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
static int rtc_open(struct inode *inode, struct file *file)
{
lock_kernel();
if( !atomic_dec_and_test(&rtc_ready) )
{
atomic_inc( &rtc_ready );
unlock_kernel();
return -EBUSY;
}
unlock_kernel();
return 0;
}