From: Lucas Stach Date: Mon, 10 Jul 2017 12:41:25 +0000 (+0200) Subject: drm/bridge: tc358767: fix probe without attached output node X-Git-Tag: v4.13-rc5~17^2~4^2~5 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d630213f2a47933e1037909273a20023ba3e598d;p=platform%2Fkernel%2Flinux-exynos.git drm/bridge: tc358767: fix probe without attached output node The output node of the TC358767 is only used if another bridge is chained behind it. Panels attached to the TC358767 can be detected using the usual DP AUX probing. This restores the old behavior of ignoring the output if no endpoint is found. Fixes: ebc944613567 (drm: convert drivers to use drm_of_find_panel_or_bridge) CC: stable@vger.kernel.org Acked-by: Andrey Gusakov Signed-off-by: Lucas Stach Signed-off-by: Archit Taneja Link: https://patchwork.freedesktop.org/patch/msgid/20170710124125.9019-1-l.stach@pengutronix.de --- diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c index 5c26488..0529e50 100644 --- a/drivers/gpu/drm/bridge/tc358767.c +++ b/drivers/gpu/drm/bridge/tc358767.c @@ -1255,7 +1255,7 @@ static int tc_probe(struct i2c_client *client, const struct i2c_device_id *id) /* port@2 is the output port */ ret = drm_of_find_panel_or_bridge(dev->of_node, 2, 0, &tc->panel, NULL); - if (ret) + if (ret && ret != -ENODEV) return ret; /* Shut down GPIO is optional */