提交 e3e8e59d 编写于 作者: A Arnd Bergmann 提交者: Jonathan Corbet

mvme16x-rtc: BKL pushdown

Signed-off-by: NArnd Bergmann <arnd@arndb.de>
上级 f9c8154f
......@@ -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;
}
......
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