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rtc: abx80x: return meaningful value for RTC_VL_READ

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ABX8XX_STATUS_BLF indicates the battery is low and needs to be replaced
soon.

Link: https://lore.kernel.org/r/20191214220259.621996-4-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Alexandre Belloni 2019-12-14 23:02:45 +01:00
parent 790a19f18a
commit 9f05342a97
1 changed files with 2 additions and 5 deletions
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7
drivers/rtc/rtc-abx80x.c
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@ -523,12 +523,9 @@ static int abx80x_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
if (status < 0)
return status;
tmp = !!(status & ABX8XX_STATUS_BLF);
tmp = status & ABX8XX_STATUS_BLF ? RTC_VL_BACKUP_LOW : 0;
if (copy_to_user((void __user *)arg, &tmp, sizeof(int)))
return -EFAULT;
return 0;
return put_user(tmp, (unsigned int __user *)arg);
case RTC_VL_CLR:
status = i2c_smbus_read_byte_data(client, ABX8XX_REG_STATUS);