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authorAlexandre Belloni <alexandre.belloni@bootlin.com>2019-12-14 23:02:46 +0100
committerAlexandre Belloni <alexandre.belloni@bootlin.com>2019-12-18 10:37:23 +0100
commitaf4273116d2ccc6e7712de54169d4a9998d52f8a (patch)
tree8adea75e36c0944884473bb0bbe55b21e02a0df7 /drivers/rtc/rtc-pcf2127.c
parent9f05342a9720a37096cbbead70909430c2e56358 (diff)
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: Alexandre Belloni <alexandre.belloni@bootlin.com>
Diffstat (limited to 'drivers/rtc/rtc-pcf2127.c')
-rw-r--r--drivers/rtc/rtc-pcf2127.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/rtc/rtc-pcf2127.c b/drivers/rtc/rtc-pcf2127.c
index ba5baaca47be..4e50d6768f13 100644
--- a/drivers/rtc/rtc-pcf2127.c
+++ b/drivers/rtc/rtc-pcf2127.c
@@ -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;
}