[PATCH v3 5/6] drm/probe-helper: use drm_kms_helper_connector_hotplug_event

[Simon Ser]

If an hotplug event only updates a single connector, use
drm_kms_helper_connector_hotplug_event instead of
drm_kms_helper_hotplug_event.

Signed-off-by: Simon Ser <cont...@emersion.fr>
---
 drivers/gpu/drm/drm_probe_helper.c | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/drm_probe_helper.c 
b/drivers/gpu/drm/drm_probe_helper.c
index 3aef3b188c99..6049dc92324b 100644
--- a/drivers/gpu/drm/drm_probe_helper.c
+++ b/drivers/gpu/drm/drm_probe_helper.c
@@ -927,7 +927,7 @@ EXPORT_SYMBOL(drm_connector_helper_hpd_irq_event);
  */
 bool drm_helper_hpd_irq_event(struct drm_device *dev)
 {
-       struct drm_connector *connector;
+       struct drm_connector *connector, *changed_connector = NULL;
        struct drm_connector_list_iter conn_iter;
        bool changed = false;
 
@@ -941,15 +941,27 @@ bool drm_helper_hpd_irq_event(struct drm_device *dev)
                if (!(connector->polled & DRM_CONNECTOR_POLL_HPD))
                        continue;
 
-               if (check_connector_changed(connector))
+               if (check_connector_changed(connector)) {
+                       if (changed) {
+                               if (changed_connector)
+                                       drm_connector_put(changed_connector);
+                               changed_connector = NULL;
+                       } else {
+                               drm_connector_get(connector);
+                               changed_connector = connector;
+                       }
+
                        changed = true;
+               }
        }
        drm_connector_list_iter_end(&conn_iter);
        mutex_unlock(&dev->mode_config.mutex);
 
-       if (changed) {
+       if (changed_connector) {
+               drm_kms_helper_connector_hotplug_event(changed_connector);
+               drm_connector_put(changed_connector);
+       } else if (changed) {
                drm_kms_helper_hotplug_event(dev);
-               DRM_DEBUG_KMS("Sent hotplug event\n");
        }
 
        return changed;
-- 
2.33.1