vmwatchdog: BKL pushdown (3e0420f0) · Commits · 戴 / test

drivers/s390/char/vmwatchdog.c

+6 −1

Original line number	Diff line number	Diff line
		@@ -13,6 +13,7 @@
		#include <linux/module.h>
		#include <linux/moduleparam.h>
		#include <linux/watchdog.h>
		#include <linux/smp_lock.h>

		#include <asm/ebcdic.h>
		#include <asm/io.h>
		@@ -131,11 +132,15 @@ static int __init vmwdt_probe(void)
		static int vmwdt_open(struct inode i, struct file f)
		{
		int ret;
		if (test_and_set_bit(0, &vmwdt_is_open))
		lock_kernel();
		if (test_and_set_bit(0, &vmwdt_is_open)) {
		unlock_kernel();
		return -EBUSY;
		}
		ret = vmwdt_keepalive();
		if (ret)
		clear_bit(0, &vmwdt_is_open);
		unlock_kernel();
		return ret ? ret : nonseekable_open(i, f);
		}