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| author | Uwe Kleine-König <[email protected]> | 2022-12-02 18:35:05 +0000 |
|---|---|---|
| committer | Thierry Reding <[email protected]> | 2022-12-06 11:46:03 +0000 |
| commit | 45558b3abb87eeb2cedb8a59cb2699c120b5102a (patch) | |
| tree | c27fe0730d0ce2659113a4250eb5bcf50277da17 /drivers/pwm/pwm-stm32.c | |
| parent | pwm: jz4740: Use regmap_{set,clear}_bits (diff) | |
| download | kernel-45558b3abb87eeb2cedb8a59cb2699c120b5102a.tar.gz kernel-45558b3abb87eeb2cedb8a59cb2699c120b5102a.zip | |
pwm: sifive: Call pwm_sifive_update_clock() while mutex is held
As was documented in commit 0f02f491b786 ("pwm: sifive: Reduce time the
controller lock is held") a caller of pwm_sifive_update_clock() must
hold the mutex. So fix pwm_sifive_clock_notifier() to grab the lock.
While this necessity was only documented later, the race exists since
the driver was introduced.
Fixes: 9e37a53eb051 ("pwm: sifive: Add a driver for SiFive SoC PWM")
Reported-by: Emil Renner Berthing <[email protected]>
Reviewed-by: Emil Renner Berthing <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Uwe Kleine-König <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
Diffstat (limited to 'drivers/pwm/pwm-stm32.c')
0 files changed, 0 insertions, 0 deletions