From 1a70ca89d59c7c8af006d29b965a95ede0abb0da Mon Sep 17 00:00:00 2001
From: Matheus Castello <matheus.castello@toradex.com>
Date: Wed, 22 Mar 2023 15:38:21 +0100
Subject: [PATCH] drm/bridge: lt8912b: return EPROBE_DEFER if bridge is not found
Git-commit: 1a70ca89d59c7c8af006d29b965a95ede0abb0da
Patch-mainline: v6.3-rc4
References: git-fixes

Returns EPROBE_DEFER when of_drm_find_bridge() fails, this is consistent
with what all the other DRM bridge drivers are doing and this is
required since the bridge might not be there when the driver is probed
and this should not be a fatal failure.

Cc: <stable@vger.kernel.org>
Fixes: 30e2ae943c26 ("drm/bridge: Introduce LT8912B DSI to HDMI bridge")
Signed-off-by: Matheus Castello <matheus.castello@toradex.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230322143821.109744-1-francesco@dolcini.it
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/gpu/drm/bridge/lontium-lt8912b.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/bridge/lontium-lt8912b.c b/drivers/gpu/drm/bridge/lontium-lt8912b.c
index 2019a8167d69..b40baced1331 100644
--- a/drivers/gpu/drm/bridge/lontium-lt8912b.c
+++ b/drivers/gpu/drm/bridge/lontium-lt8912b.c
@@ -676,8 +676,8 @@ static int lt8912_parse_dt(struct lt8912 *lt)
 
 	lt->hdmi_port = of_drm_find_bridge(port_node);
 	if (!lt->hdmi_port) {
-		dev_err(lt->dev, "%s: Failed to get hdmi port\n", __func__);
-		ret = -ENODEV;
+		ret = -EPROBE_DEFER;
+		dev_err_probe(lt->dev, ret, "%s: Failed to get hdmi port\n", __func__);
 		goto err_free_host_node;
 	}
 
-- 
2.35.3