drm: bridge: Return NULL on error from drm_bridge_get_edid()

The drm_bridge_get_edid() function is documented to return an error
pointer on error. The underlying .get_edid() operation, however, returns
NULL on error, and so do the drm_get_edid() and drm_do_get_edid()
functions upon which .get_edid() is usually implemented. Make
drm_bridge_get_edid() return NULL on error to be consistent.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200526011505.31884-6-laurent.pinchart+renesas@ideasonboard.com

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
index afdec8e5fc68..fe1e3460b486 100644
--- a/drivers/gpu/drm/drm_bridge.c
+++ b/drivers/gpu/drm/drm_bridge.c
@@ -1086,16 +1086,16 @@ EXPORT_SYMBOL_GPL(drm_bridge_get_modes);
  *
  * If the bridge supports output EDID retrieval, as reported by the
  * DRM_BRIDGE_OP_EDID bridge ops flag, call &drm_bridge_funcs.get_edid to
- * get the EDID and return it. Otherwise return ERR_PTR(-ENOTSUPP).
+ * get the EDID and return it. Otherwise return NULL.
  *
  * RETURNS:
- * The retrieved EDID on success, or an error pointer otherwise.
+ * The retrieved EDID on success, or NULL otherwise.
  */
 struct edid *drm_bridge_get_edid(struct drm_bridge *bridge,
 				 struct drm_connector *connector)
 {
 	if (!(bridge->ops & DRM_BRIDGE_OP_EDID))
-		return ERR_PTR(-ENOTSUPP);
+		return NULL;
 
 	return bridge->funcs->get_edid(bridge, connector);
 }