ip27-rtc: BKL pushdown (b0e54f7c) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/char/ip27-rtc.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -27,6 +27,7 @@
		#include <linux/bcd.h>
		#include <linux/module.h>
		#include <linux/kernel.h>
		#include <linux/smp_lock.h>
		#include <linux/types.h>
		#include <linux/miscdevice.h>
		#include <linux/ioport.h>
		@@ -163,15 +164,18 @@ static long rtc_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)

		static int rtc_open(struct inode inode, struct file file)
		{
		lock_kernel();
		spin_lock_irq(&rtc_lock);

		if (rtc_status & RTC_IS_OPEN) {
		spin_unlock_irq(&rtc_lock);
		unlock_kernel();
		return -EBUSY;
		}

		rtc_status \|= RTC_IS_OPEN;
		spin_unlock_irq(&rtc_lock);
		unlock_kernel();

		return 0;
		}