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| author | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2019-12-14 23:02:59 +0100 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2019-12-18 10:37:45 +0100 |
| commit | 8049c11399a3109099d35fd29e9b55070577ade0 (patch) | |
| tree | 969e59d8dbdb430925d044098ae78dc6ca6740f0 /drivers/rtc/rtc-rx8010.c | |
| parent | 894b04320020ee9752c9fffad0fe72ed2ed81e71 (diff) | |
| download | linux-8049c11399a3109099d35fd29e9b55070577ade0.tar.gz | |
rtc: rx8010: return meaningful value for RTC_VL_READ
RX8010_FLAG_VLF means the voltage dropped too low and data has been lost.
Link: https://lore.kernel.org/r/20191214220259.621996-18-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Diffstat (limited to 'drivers/rtc/rtc-rx8010.c')
| -rw-r--r-- | drivers/rtc/rtc-rx8010.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/drivers/rtc/rtc-rx8010.c b/drivers/rtc/rtc-rx8010.c index 9b106a26c64b1..4021844bf2fa6 100644 --- a/drivers/rtc/rtc-rx8010.c +++ b/drivers/rtc/rtc-rx8010.c @@ -399,11 +399,8 @@ static int rx8010_ioctl(struct device *dev, unsigned int cmd, unsigned long arg) if (flagreg < 0) return flagreg; - tmp = !!(flagreg & RX8010_FLAG_VLF); - if (copy_to_user((void __user *)arg, &tmp, sizeof(int))) - return -EFAULT; - - return 0; + tmp = flagreg & RX8010_FLAG_VLF ? RTC_VL_DATA_INVALID : 0; + return put_user(tmp, (unsigned int __user *)arg); default: return -ENOIOCTLCMD; |