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drm/bridge: tc358767: Handle dsi_lanes == 0 as invalid

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[ Upstream commit 0d662350928e6787d29ab205e47e5aa6f1f792f9 ]

Handle empty data-lanes = < >; property, which translates to
dsi_lanes = 0 as invalid.

Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Fixes: bbfd3190b6562 ("drm/bridge: tc358767: Add DSI-to-DPI mode support")
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>
Link: https://patchwork.freedesktop.org/patch/msgid/20220519095137.11896-1-marex@denx.de
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Marek Vasut 2022-05-19 11:51:36 +02:00 committed by Greg Kroah-Hartman
parent 9c5d750da0
commit a665b500d7
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/bridge/tc358767.c
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@ -1871,7 +1871,7 @@ static int tc_mipi_dsi_host_attach(struct tc_data *tc)
of_node_put(host_node);
of_node_put(endpoint);
if (dsi_lanes < 0 || dsi_lanes > 4)
if (dsi_lanes <= 0 || dsi_lanes > 4)
return -EINVAL;
if (!host)