| Message ID | 20241125191818.30708-2-jiashengjiangcool@gmail.com |
|---|---|
| State | New |
| Headers | show |
| Series | [RESEND,v3,1/2] media: mipi-csis: Add check for clk_enable() | expand |
On 25/11/2024 20:18, Jiasheng Jiang wrote: > Add check for the return value of clk_enable() to gurantee the success. > > Fixes: b5f1220d587d ("[media] v4l: Add v4l2 subdev driver for S5P/EXYNOS4 MIPI-CSI receivers") > Signed-off-by: Jiasheng Jiang <jiashengjiangcool@gmail.com> > --- > Changelog: > Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Best regards, Krzysztof
diff --git a/drivers/media/platform/samsung/exynos4-is/mipi-csis.c b/drivers/media/platform/samsung/exynos4-is/mipi-csis.c index 63f3eecdd7e6..452880b5350c 100644 --- a/drivers/media/platform/samsung/exynos4-is/mipi-csis.c +++ b/drivers/media/platform/samsung/exynos4-is/mipi-csis.c @@ -940,13 +940,19 @@ static int s5pcsis_pm_resume(struct device *dev, bool runtime) state->supplies); goto unlock; } - clk_enable(state->clock[CSIS_CLK_GATE]); + ret = clk_enable(state->clock[CSIS_CLK_GATE]); + if (ret) { + phy_power_off(state->phy); + regulator_bulk_disable(CSIS_NUM_SUPPLIES, + state->supplies); + goto unlock; + } } if (state->flags & ST_STREAMING) s5pcsis_start_stream(state); state->flags &= ~ST_SUSPENDED; - unlock: +unlock: mutex_unlock(&state->lock); return ret ? -EAGAIN : 0; }
Add check for the return value of clk_enable() to gurantee the success. Fixes: b5f1220d587d ("[media] v4l: Add v4l2 subdev driver for S5P/EXYNOS4 MIPI-CSI receivers") Signed-off-by: Jiasheng Jiang <jiashengjiangcool@gmail.com> --- Changelog: v2 -> v3: 1. Correct alignment to match open parenthesis v1 -> v2: 1. Power off the phy and disble regulators when clk_enable() fails. 2. Remove a redundant space before the label "unlock". --- drivers/media/platform/samsung/exynos4-is/mipi-csis.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-)