github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-07-27 09:36:22 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

rtc: abx80x: fix the RTC_VL_CLR clearing all status flags

Browse Source 
The RTC_VL_CLR ioctl intends to clear only the battery low flag (BLF),
however the current implementation writes 0 to the status register,
clearing all status bits.

Fix this by writing back the masked status value so that only BLF is
cleared, preserving other status flags.

Fixes: ffe1c5a2d4 ("rtc: abx80x: Implement RTC_VL_READ,CLR ioctls")
Signed-off-by: Antoni Pokusinski <apokusinski01@gmail.com>
Link: https://patch.msgid.link/20260415160610.127155-2-apokusinski01@gmail.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Antoni Pokusinski 2026-04-15 18:06:11 +02:00 committed by Alexandre Belloni
parent 2098bb8ac5
commit 419719c514
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/rtc/rtc-abx80x.c
View File

@ -545,7 +545,8 @@ static int abx80x_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
status &= ~ABX8XX_STATUS_BLF;
tmp = i2c_smbus_write_byte_data(client, ABX8XX_REG_STATUS, 0);
tmp = i2c_smbus_write_byte_data(client, ABX8XX_REG_STATUS,
status);
if (tmp < 0)
return tmp;