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drm/bridge: tc358775: Fix drm_of_get_data_lanes_count_ep conversion

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Initialize dsi_lanes to -1, so that in case the endpoint is missing,
probe would fail as it did before the conversion, instead of depending
on uninitialized variable and thus undefined behavior.

Fixes: 56426faa14 ("drm/bridge: tc358775: Convert to drm_of_get_data_lanes_count_ep")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Andrzej Hajda <andrzej.hajda@intel.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Maxime Ripard <maxime@cerno.tech>
Cc: Robert Foss <robert.foss@linaro.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
To: dri-devel@lists.freedesktop.org
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220612132152.91052-2-marex@denx.de
This commit is contained in:
Marek Vasut 2022-06-12 15:21:51 +02:00
parent eb6b94db2f
commit c750c4ce1a
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/bridge/tc358775.c
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@ -529,7 +529,7 @@ static int tc358775_parse_dt(struct device_node *np, struct tc_data *tc)
struct device_node *endpoint;
struct device_node *parent;
struct device_node *remote;
int dsi_lanes;
int dsi_lanes = -1;
/*
* To get the data-lanes of dsi, we need to access the dsi0_out of port1