[RFC 2/5] drm/nouveau/kms: Don't probe eDP connectors more then once

From: Lyude Paul
Date: Wed Dec 09 2020 - 20:24:10 EST


eDP doesn't do hotplugging, so there's no reason for us to reprobe it (unless a
connection status change is being forced, of course).

Signed-off-by: Lyude Paul <lyude@xxxxxxxxxx>
Cc: Jani Nikula <jani.nikula@xxxxxxxxx>
Cc: Dave Airlie <airlied@xxxxxxxxx>
Cc: greg.depoire@xxxxxxxxx
---
drivers/gpu/drm/nouveau/nouveau_connector.c | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c
index 8b4b3688c7ae..398fee9b7ae9 100644
--- a/drivers/gpu/drm/nouveau/nouveau_connector.c
+++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
@@ -554,6 +554,12 @@ nouveau_connector_detect(struct drm_connector *connector, bool force)
int ret;
enum drm_connector_status conn_status = connector_status_disconnected;

+ /* eDP doesn't do hotplugging, never probe more then once */
+ if (nv_connector->type == DCB_CONNECTOR_eDP &&
+ connector->force == DRM_FORCE_UNSPECIFIED &&
+ connector->status != connector_status_unknown)
+ return connector->status;
+
/* Outputs are only polled while runtime active, so resuming the
* device here is unnecessary (and would deadlock upon runtime suspend
* because it waits for polling to finish). We do however, want to
--
2.28.0