Commit 244cf8f0 authored by Alexandre Belloni's avatar Alexandre Belloni
Browse files

rtc: pcf8523: return meaningful value for RTC_VL_READ 

REG_CONTROL3_BLF indicates the battery is low and needs to be replaced
soon.

Link: https://lore.kernel.org/r/20191214220259.621996-6-alexandre.belloni@bootlin.com


Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@bootlin.com>
parent af427311

drivers/rtc/rtc-pcf8523.c

+3 −3
Original line number Diff line number Diff line
@@ -282,11 +282,11 @@ static int pcf8523_rtc_ioctl(struct device *dev, unsigned int cmd, 
		ret = pcf8523_voltage_low(client);

		if (ret < 0)

			return ret;

		if (ret)

			ret = RTC_VL_BACKUP_LOW;



		if (copy_to_user((void __user *)arg, &ret, sizeof(int)))

			return -EFAULT;

		return put_user(ret, (unsigned int __user *)arg);



		return 0;

	default:

		return -ENOIOCTLCMD;

	}