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Commit 41012735 authored by Arnd Bergmann's avatar Arnd Bergmann Committed by Jonathan Corbet
Browse files

rtc-rtc-m41t80: BKL pushdown 



Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
parent 4333deee

drivers/rtc/rtc-m41t80.c

+6 −1
Original line number Diff line number Diff line
@@ -17,6 +17,7 @@ 
#include <linux/init.h>

#include <linux/kernel.h>

#include <linux/slab.h>

#include <linux/smp_lock.h>

#include <linux/string.h>

#include <linux/i2c.h>

#include <linux/rtc.h>
@@ -655,12 +656,16 @@ static int wdt_ioctl(struct inode *inode, struct file *file, unsigned int cmd, 
static int wdt_open(struct inode *inode, struct file *file)

{

	if (MINOR(inode->i_rdev) == WATCHDOG_MINOR) {

		if (test_and_set_bit(0, &wdt_is_open))

		lock_kernel();

		if (test_and_set_bit(0, &wdt_is_open)) {

			unlock_kernel();

			return -EBUSY;

		}

		/*

		 *	Activate

		 */

		wdt_is_open = 1;

		unlock_kernel();

		return 0;

	}

	return -ENODEV;