From: Alexandre Belloni <alexandre.belloni@bootlin.com>
Date: Sat, 14 Dec 2019 23:02:45 +0100
Subject: rtc: abx80x: return meaningful value for RTC_VL_READ
Git-commit: 9f05342a9720a37096cbbead70909430c2e56358
Patch-mainline: v5.6-rc1
References: jsc#SLE-12251
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>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@suse.com>
---
drivers/rtc/rtc-abx80x.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/drivers/rtc/rtc-abx80x.c b/drivers/rtc/rtc-abx80x.c
index 73830670a41f..3521d8e8dc38 100644
--- a/drivers/rtc/rtc-abx80x.c
+++ b/drivers/rtc/rtc-abx80x.c
@@ -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);
--
2.26.2