Quoting Kuogee Hsieh (2022-08-10 12:25:51)
> diff --git a/drivers/gpu/drm/msm/dp/dp_display.c
> b/drivers/gpu/drm/msm/dp/dp_display.c
> index b36f8b6..678289a 100644
> --- a/drivers/gpu/drm/msm/dp/dp_display.c
> +++ b/drivers/gpu/drm/msm/dp/dp_display.c
> @@ -1729,10 +1729,20 @@ void dp_bridge_disable(struct drm_bridge *drm_bridge)
> struct msm_dp_bridge *dp_bridge = to_dp_bridge(drm_bridge);
> struct msm_dp *dp = dp_bridge->dp_display;
> struct dp_display_private *dp_display;
> + u32 state;
>
> dp_display = container_of(dp, struct dp_display_private, dp_display);
>
> + mutex_lock(&dp_display->event_mutex);
> +
> + state = dp_display->hpd_state;
> + if (state != ST_DISCONNECT_PENDING && state != ST_CONNECTED) {
It's concerning that we have to check this at all. Are we still
interjecting into the disable path when the cable is disconnected?
> + mutex_unlock(&dp_display->event_mutex);
> + return;
> + }
> +
> dp_ctrl_push_idle(dp_display->ctrl);
> + mutex_unlock(&dp_display->event_mutex);
