Commit af427311 authored by Alexandre Belloni's avatar Alexandre Belloni
Browse files

rtc: pcf2127: return meaningful value for RTC_VL_READ 

PCF2127_BIT_CTRL3_BLF indicates the battery is low and needs to be replaced
soon.

Link: https://lore.kernel.org/r/20191214220259.621996-5-alexandre.belloni@bootlin.com


Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@bootlin.com>
parent 9f05342a

drivers/rtc/rtc-pcf2127.c

+2 −4
Original line number Diff line number Diff line
@@ -199,11 +199,9 @@ static int pcf2127_rtc_ioctl(struct device *dev, 
		if (ret)

			return ret;



		touser = touser & PCF2127_BIT_CTRL3_BLF ? 1 : 0;

		touser = touser & PCF2127_BIT_CTRL3_BLF ? RTC_VL_BACKUP_LOW : 0;



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

			return -EFAULT;

		return 0;

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

	default:

		return -ENOIOCTLCMD;

	}