| Message ID | 20240521073607.19426-1-abelova@astralinux.ru (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | [RFC,media] s5p-fimc: fix sleep in atomic in flite_hw_reset | expand |
On 21/05/2024 09:36, Anastasia Belova wrote: > flite_hw_reset is called in fimc_lite_resume with spinlock > acquired that is forbidden. Replace usleep_range with udelay. > > Fixes: 2b511edb986f ("[media] s5p-fimc: Add FIMC-LITE register definitions") > Signed-off-by: Anastasia Belova <abelova@astralinux.ru> > --- > drivers/media/platform/samsung/exynos4-is/fimc-lite-reg.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/media/platform/samsung/exynos4-is/fimc-lite-reg.c b/drivers/media/platform/samsung/exynos4-is/fimc-lite-reg.c > index 2483277a6cb0..f1e7375c9a5f 100644 > --- a/drivers/media/platform/samsung/exynos4-is/fimc-lite-reg.c > +++ b/drivers/media/platform/samsung/exynos4-is/fimc-lite-reg.c > @@ -30,7 +30,7 @@ void flite_hw_reset(struct fimc_lite *dev) > cfg = readl(dev->regs + FLITE_REG_CIGCTRL); > if (cfg & FLITE_REG_CIGCTRL_SWRST_RDY) > break; > - usleep_range(1000, 5000); > + udelay(1000); I think the code is rather wrong in fimc_lite_resume() - this should be called outside of spinlock, thus usleep is ok. Best regards, Krzysztof
diff --git a/drivers/media/platform/samsung/exynos4-is/fimc-lite-reg.c b/drivers/media/platform/samsung/exynos4-is/fimc-lite-reg.c index 2483277a6cb0..f1e7375c9a5f 100644 --- a/drivers/media/platform/samsung/exynos4-is/fimc-lite-reg.c +++ b/drivers/media/platform/samsung/exynos4-is/fimc-lite-reg.c @@ -30,7 +30,7 @@ void flite_hw_reset(struct fimc_lite *dev) cfg = readl(dev->regs + FLITE_REG_CIGCTRL); if (cfg & FLITE_REG_CIGCTRL_SWRST_RDY) break; - usleep_range(1000, 5000); + udelay(1000); } cfg |= FLITE_REG_CIGCTRL_SWRST;
flite_hw_reset is called in fimc_lite_resume with spinlock acquired that is forbidden. Replace usleep_range with udelay. Fixes: 2b511edb986f ("[media] s5p-fimc: Add FIMC-LITE register definitions") Signed-off-by: Anastasia Belova <abelova@astralinux.ru> --- drivers/media/platform/samsung/exynos4-is/fimc-lite-reg.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)