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: 56426faa1492 ("drm/bridge: tc358775: Convert to drm_of_get_data_lanes_count_ep") Reported-by: kernel test robot <lkp@xxxxxxxxx> Signed-off-by: Marek Vasut <marex@xxxxxxx> Cc: Andrzej Hajda <andrzej.hajda@xxxxxxxxx> Cc: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> Cc: Lucas Stach <l.stach@xxxxxxxxxxxxxx> Cc: Maxime Ripard <maxime@xxxxxxxxxx> Cc: Robert Foss <robert.foss@xxxxxxxxxx> Cc: Sam Ravnborg <sam@xxxxxxxxxxxx> To: dri-devel@xxxxxxxxxxxxxxxxxxxxx --- drivers/gpu/drm/bridge/tc358775.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/tc358775.c b/drivers/gpu/drm/bridge/tc358775.c index 5b1fb8e2f9a7d..e5d00a6e7880b 100644 --- a/drivers/gpu/drm/bridge/tc358775.c +++ b/drivers/gpu/drm/bridge/tc358775.c @@ -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 -- 2.35.1