[v7,2/3,RESEND] drm/bridge_connector: stop filtering events in drm_bridge_connector_hpd_cb()

Commit Message

Dmitry Baryshkov Oct. 9, 2023, 5:40 p.m. UTC

In some cases the bridge drivers would like to receive hotplug events
even in the case new status is equal to the old status. In the DP case
this is used to deliver "attention" messages to the DP host. Stop
filtering the events in the drm_bridge_connector_hpd_cb() and let
drivers decide whether they would like to receive the event or not.

Reviewed-by: Janne Grunau <[e-mail]>
Signed-off-by: Dmitry Baryshkov <[e-mail]>
---
 drivers/gpu/drm/drm_bridge_connector.c | 5 -----
 1 file changed, 5 deletions(-)

Patch

diff --git a/drivers/gpu/drm/drm_bridge_connector.c b/drivers/gpu/drm/drm_bridge_connector.c
index 31baf1f5ff81..70582491d955 100644
--- a/drivers/gpu/drm/drm_bridge_connector.c
+++ b/drivers/gpu/drm/drm_bridge_connector.c
@@ -113,16 +113,11 @@  static void drm_bridge_connector_hpd_cb(void *cb_data,
 	struct drm_bridge_connector *drm_bridge_connector = cb_data;
 	struct drm_connector *connector = &drm_bridge_connector->base;
 	struct drm_device *dev = connector->dev;
-	enum drm_connector_status old_status;
 
 	mutex_lock(&dev->mode_config.mutex);
-	old_status = connector->status;
 	connector->status = status;
 	mutex_unlock(&dev->mode_config.mutex);
 
-	if (old_status == status)
-		return;
-
 	drm_bridge_connector_hpd_notify(connector, status);
 
 	drm_kms_helper_connector_hotplug_event(connector);