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| author |   Mateusz Jończyk <mat.jonczyk@o2.pl> | 2022-02-20 10:04:03 +0100 |
|---|---|---|
| committer |   Alexandre Belloni <alexandre.belloni@bootlin.com> | 2022-03-23 19:58:37 +0100 |
| commit | 811f5559270f25c34c338d6eaa2ece2544c3d3bd (patch) | |
| tree | 1412309dcbdd4f866da1c07d69cd031483740472 /drivers/rtc/sysfs.c | |
| parent | dt-bindings: rtc: at91: rename rtt bindings file (diff) | |
| download | linux-dev-811f5559270f25c34c338d6eaa2ece2544c3d3bd.tar.xz linux-dev-811f5559270f25c34c338d6eaa2ece2544c3d3bd.zip | |
rtc: mc146818-lib: fix locking in mc146818_set_time
In mc146818_set_time(), CMOS_READ(RTC_CONTROL) was performed without the
rtc_lock taken, which is required for CMOS accesses. Fix this.
Nothing in kernel modifies RTC_DM_BINARY, so a separate critical section
is allowed here.
Fixes: dcf257e92622 ("rtc: mc146818: Reduce spinlock section in mc146818_set_time()")
Signed-off-by: Mateusz Jończyk <mat.jonczyk@o2.pl>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20220220090403.153928-1-mat.jonczyk@o2.pl
Diffstat (limited to 'drivers/rtc/sysfs.c')
0 files changed, 0 insertions, 0 deletions