From d5a81e981769154e2bcd2d88bc7a9f0c73d16d66 Mon Sep 17 00:00:00 2001
From: Jani Nikula <jani.nikula@intel.com>
Date: Tue, 23 Jan 2024 21:37:11 +0200
Subject: [PATCH] drm/bridge: lt8912b: clear the EDID property on failures

[ Upstream commit 29e032296da5d6294378ffa8bad8e976c5aadbf5 ]

If EDID read fails, clear the EDID property.

Cc: Adrien Grassein <adrien.grassein@gmail.com>
Cc: Andrzej Hajda <andrzej.hajda@intel.com>
Cc: Neil Armstrong <neil.armstrong@linaro.org>
Cc: Robert Foss <rfoss@kernel.org>
Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
Cc: Jonas Karlman <jonas@kwiboo.se>
Cc: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/2080adaadf4bba3d85f58c42c065caf9aad9a4ef.1706038510.git.jani.nikula@intel.com
Stable-dep-of: 171b711b26cc ("drm/bridge: lt8912b: do not return negative values from .get_modes()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/bridge/lontium-lt8912b.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/bridge/lontium-lt8912b.c b/drivers/gpu/drm/bridge/lontium-lt8912b.c
index 491c08306f81..f0ebd56b4736 100644
--- a/drivers/gpu/drm/bridge/lontium-lt8912b.c
+++ b/drivers/gpu/drm/bridge/lontium-lt8912b.c
@@ -436,8 +436,8 @@ static int lt8912_connector_get_modes(struct drm_connector *connector)
 	u32 bus_format = MEDIA_BUS_FMT_RGB888_1X24;
 
 	drm_edid = drm_bridge_edid_read(lt->hdmi_port, connector);
+	drm_edid_connector_update(connector, drm_edid);
 	if (drm_edid) {
-		drm_edid_connector_update(connector, drm_edid);
 		num = drm_edid_connector_add_modes(connector);
 	} else {
 		return ret;