When pm_runtime_resume_and_get() fails, unlock before returning.

Fixes: 5814b8bf086a ("drm/msm/dp: incorporate pm_runtime framework into DP driver")
Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
---
This is based on static analysis with Smatch. Only compile tested.
---
 drivers/gpu/drm/msm/dp/dp_display.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
index 61b7103498a7..b57ff6c3215d 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -569,6 +569,7 @@ static int dp_hpd_plug_handle(struct dp_display_private *dp, u32 data)
 	ret = pm_runtime_resume_and_get(&pdev->dev);
 	if (ret) {
 		DRM_ERROR("failed to pm_runtime_resume\n");
+		mutex_unlock(&dp->event_mutex);
 		return ret;
 	}
 
-- 
2.39.3

On 12/4/2023 9:13 AM, Harshit Mogalapalli wrote:
> When pm_runtime_resume_and_get() fails, unlock before returning.
> 
> Fixes: 5814b8bf086a ("drm/msm/dp: incorporate pm_runtime framework into DP driver")
> Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
> ---
> This is based on static analysis with Smatch. Only compile tested.
> ---
>   drivers/gpu/drm/msm/dp/dp_display.c | 1 +
>   1 file changed, 1 insertion(+)
> 

Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>

On Mon, 04 Dec 2023 09:13:14 -0800, Harshit Mogalapalli wrote:
> When pm_runtime_resume_and_get() fails, unlock before returning.
> 
> 

Applied, thanks!

[1/1] drm/msm/dp: add a missing unlock in dp_hpd_plug_handle()
      https://gitlab.freedesktop.org/lumag/msm/-/commit/801207c18834

Best regards,
-- 
Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

On Mon, 4 Dec 2023 at 19:13, Harshit Mogalapalli
<harshit.m.mogalapalli@oracle.com> wrote:
>
> When pm_runtime_resume_and_get() fails, unlock before returning.
>
> Fixes: 5814b8bf086a ("drm/msm/dp: incorporate pm_runtime framework into DP driver")
> Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
> ---
> This is based on static analysis with Smatch. Only compile tested.
> ---
>  drivers/gpu/drm/msm/dp/dp_display.c | 1 +
>  1 file changed, 1 insertion(+)


Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

-- 
With best wishes
Dmitry