[PATCH] drm: Show leaked connectors upon unload

[Chris Wilson]

After warning that the connector list is not empty on device
unregistration (i.e. module unload) also print out which connectors are
still hanging around to aide finding the leak.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/drm_mode_config.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_mode_config.c b/drivers/gpu/drm/drm_mode_config.c
index ed1ee5a44a7b..884cc4d26fb5 100644
--- a/drivers/gpu/drm/drm_mode_config.c
+++ b/drivers/gpu/drm/drm_mode_config.c
@@ -421,7 +421,12 @@ void drm_mode_config_cleanup(struct drm_device *dev)
 		drm_connector_unreference(connector);
 	}
 	drm_connector_list_iter_put(&conn_iter);
-	WARN_ON(!list_empty(&dev->mode_config.connector_list));
+	if (WARN_ON(!list_empty(&dev->mode_config.connector_list))) {
+		drm_connector_list_iter_get(dev, &conn_iter);
+		drm_for_each_connector_iter(connector, &conn_iter)
+			DRM_ERROR("connector %s leaked!\n", connector->name);
+		drm_connector_list_iter_put(&conn_iter);
+	}
 
 	list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
 				 head) {
-- 
2.11.0