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| author |   Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2022-12-02 19:35:05 +0100 |
|---|---|---|
| committer |   Thierry Reding <thierry.reding@gmail.com> | 2022-12-06 12:46:03 +0100 |
| commit | 45558b3abb87eeb2cedb8a59cb2699c120b5102a (patch) | |
| tree | c27fe0730d0ce2659113a4250eb5bcf50277da17 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | pwm: jz4740: Use regmap_{set,clear}_bits (diff) | |
| download | wireguard-linux-45558b3abb87eeb2cedb8a59cb2699c120b5102a.tar.xz wireguard-linux-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 <emil.renner.berthing@canonical.com>
Reviewed-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>
Link: https://lore.kernel.org/r/20221018061656.1428111-1-u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions