diff options
| author | Marek Szyprowski <m.szyprowski@samsung.com> | 2026-07-13 10:56:53 +0200 |
|---|---|---|
| committer | Daniel Lezcano <daniel.lezcano@kernel.org> | 2026-08-13 18:13:15 +0200 |
| commit | 3b212f9d70805d91febae01d618868f4860e267c (patch) | |
| tree | 8a6640a237c85e6ae53f3ded39b35718927daed8 /include | |
| parent | e998c6300ef4e062a704ee17b5a812c0b595cf42 (diff) | |
clocksource/drivers/samsung_pwm: Switch to raw_spinlock_t type
Samsung PWM timer might be used as a clock source on some legacy systems.
When PREEMPT_RT is enabled on ARM, regular spinlock is converted to a
sleeping lock (mutex-based), which must not be used in atomic context
such as hard interrupt handlers. Switch the samsung_pwm_lock to the
raw_spinlock, which remains a true non-sleeping spinlock even
under PREEMPT_RT.
Fixes: 7aac482e6290 ("clocksource: samsung_pwm_timer: Make PWM spinlock global")
Fixes: f11899894c0a ("clocksource: add samsung pwm timer driver")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Uwe Kleine-König <ukleinek@kernel.org>
Link: https://patch.msgid.link/20260713085653.1145015-1-m.szyprowski@samsung.com
Diffstat (limited to 'include')
| -rw-r--r-- | include/clocksource/samsung_pwm.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/clocksource/samsung_pwm.h b/include/clocksource/samsung_pwm.h index 9b435caa95fe..36f6f246e559 100644 --- a/include/clocksource/samsung_pwm.h +++ b/include/clocksource/samsung_pwm.h @@ -15,7 +15,7 @@ * spinlock is not shared between both drivers. */ #ifdef CONFIG_CLKSRC_SAMSUNG_PWM -extern spinlock_t samsung_pwm_lock; +extern raw_spinlock_t samsung_pwm_lock; #endif struct samsung_pwm_variant { |