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rtc: pcf2127: return meaningful value for RTC_VL_READ

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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: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Alexandre Belloni 2019-12-14 23:02:46 +01:00
parent 9f05342a97
commit af4273116d
1 changed files with 2 additions and 4 deletions
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6
drivers/rtc/rtc-pcf2127.c
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@ -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;
}