diff options
| author | Marek Vasut <marex@denx.de> | 2022-04-28 23:31:32 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-08-17 14:24:30 +0200 |
| commit | a25f45ff8856eebe68cfb8bf67fe3e6e17877168 (patch) | |
| tree | 42130d9c2fa43a229398e2273040419e664c9e5c | |
| parent | 276e1cac808587bf4a49b26fc13b386ca52ad5e4 (diff) | |
| download | linux-stable-a25f45ff8856eebe68cfb8bf67fe3e6e17877168.tar.gz linux-stable-a25f45ff8856eebe68cfb8bf67fe3e6e17877168.tar.bz2 linux-stable-a25f45ff8856eebe68cfb8bf67fe3e6e17877168.zip | |
drm/bridge: tc358767: Fix (e)DP bridge endpoint parsing in dedicated function
commit 9030a9e571b3ba250d3d450a98310e3c74ecaff4 upstream.
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: 8478095a8c4b ("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
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/gpu/drm/bridge/tc358767.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c index a2d051ed6cd8..14d671742963 100644 --- a/drivers/gpu/drm/bridge/tc358767.c +++ b/drivers/gpu/drm/bridge/tc358767.c @@ -1573,7 +1573,7 @@ static int tc_probe_edp_bridge_endpoint(struct tc_data *tc) tc->bridge.type = DRM_MODE_CONNECTOR_DisplayPort; } - return ret; + return 0; } static int tc_probe(struct i2c_client *client, const struct i2c_device_id *id) |