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drm/bridge: tc358767: Fix (e)DP bridge endpoint parsing in dedicated function 

Per toshiba,tc358767.yaml DT binding document, port@2 the output (e)DP
port is optional. In case this port is not described in DT, the bridge
driver operates in DPI-to-DP mode. The drm_of_find_panel_or_bridge()
call in tc_probe_edp_bridge_endpoint() returns -ENODEV in case port@2
is not present in DT and this specific return value is incorrectly
propagated outside of tc_probe_edp_bridge_endpoint() function. All
other error values must be propagated and are propagated correctly.

Return 0 in case the port@2 is missing instead, that reinstates the
original behavior before the commit this patch fixes.

Fixes: 8478095a8c ("drm/bridge: tc358767: Move (e)DP bridge endpoint parsing into dedicated function")
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Jonas Karlman <jonas@kwiboo.se>
Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Marek Vasut <marex@denx.de>
Cc: Maxime Ripard <maxime@cerno.tech>
Cc: Neil Armstrong <narmstrong@baylibre.com>
Cc: Robert Foss <robert.foss@linaro.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20220428213132.447890-1-marex@denx.de
This commit is contained in:
Marek Vasut 2022-04-28 23:31:32 +02:00
parent 17edb8e1e3
commit 9030a9e571
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/bridge/tc358767.c
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@ -1955,7 +1955,7 @@ static int tc_probe_edp_bridge_endpoint(struct tc_data *tc)
tc->bridge.ops |= DRM_BRIDGE_OP_DETECT;
tc->bridge.ops |= DRM_BRIDGE_OP_EDID;
return ret;
return 0;
}
static int tc_probe_bridge_endpoint(struct tc_data *tc)