[PATCH v4] drm/bridge: tc358767: Fix (e)DP bridge endpoint parsing in dedicated function

[Marek Vasut]

On 4/28/22 23:31, Marek Vasut wrote:
> Per toshiba,tc358767.yaml DT binding document, port at 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 at 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 at 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 at denx.de>
> Cc: Jonas Karlman <jonas at kwiboo.se>
> Cc: Laurent Pinchart <Laurent.pinchart at ideasonboard.com>
> Cc: Lucas Stach <l.stach at pengutronix.de>
> Cc: Marek Vasut <marex at denx.de>
> Cc: Maxime Ripard <maxime at cerno.tech>
> Cc: Neil Armstrong <narmstrong at baylibre.com>
> Cc: Robert Foss <robert.foss at linaro.org>
> Cc: Sam Ravnborg <sam at ravnborg.org>

This is a V1, sigh ... the fix stands however.