REG_CONTROL3_BLF indicates the battery is low and needs to be replaced soon. Signed-off-by: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx> --- drivers/rtc/rtc-pcf8523.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/rtc/rtc-pcf8523.c b/drivers/rtc/rtc-pcf8523.c index b24c908f5f06..47e0f411dd5c 100644 --- a/drivers/rtc/rtc-pcf8523.c +++ b/drivers/rtc/rtc-pcf8523.c @@ -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; } -- 2.23.0
