mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-15 08:14:15 +08:00
1f306ecbe0
This patch converts spin_[lock|unlock] functions of pin bank to raw_spinlock to support preempt-rt. This can avoid BUG() assertion when irqchip callbacks are triggerred. Spinlocks can be converted rt_mutex which is preemptible when we apply preempt-rt patches. According to "Documentation/driver-api/gpio/driver.rst", "Realtime considerations: a realtime compliant GPIO driver should not use spinlock_t or any sleepable APIs (like PM runtime) as part of its irqchip implementation. - spinlock_t should be replaced with raw_spinlock_t.[1] " Cc: Tomasz Figa <tomasz.figa@gmail.com> Cc: Krzysztof Kozlowski <krzk@kernel.org> Cc: Sylwester Nawrocki <s.nawrocki@samsung.com> Cc: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Chanho Park <chanho61.park@samsung.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Link: https://lore.kernel.org/r/20210121030009.25673-1-chanho61.park@samsung.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org> |
||
|---|---|---|
| .. | ||
| Kconfig | ||
| Makefile | ||
| pinctrl-exynos-arm64.c | ||
| pinctrl-exynos-arm.c | ||
| pinctrl-exynos.c | ||
| pinctrl-exynos.h | ||
| pinctrl-s3c24xx.c | ||
| pinctrl-s3c64xx.c | ||
| pinctrl-samsung.c | ||
| pinctrl-samsung.h | ||