drm/msm/dp: add a missing unlock in dp_hpd_plug_handle()

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>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/570395/
Link: https://lore.kernel.org/r/20231204171317.192427-1-harshit.m.mogalapalli@oracle.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
index 3a360c87e2dc476b7633bc45be03bec31b8b62d0..20c5cf7986b22c0f59917e46be1f29858d235613 100644 (file)
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -564,6 +564,7 @@ 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;
        }