diff options
| author | Marek Vasut <marex@denx.de> | 2022-06-12 16:21:51 +0300 |
|---|---|---|
| committer | Marek Vasut <marex@denx.de> | 2022-06-12 17:07:06 +0300 |
| commit | c750c4ce1ad69d3df68359abce70ee3d0064c97a (patch) | |
| tree | 19d50be2e70f36f6962e9c7d9f3ff953045054a4 | |
| parent | eb6b94db2f4a585d4a9b8e503d7377d2a23c1104 (diff) | |
| download | linux-c750c4ce1ad69d3df68359abce70ee3d0064c97a.tar.xz | |
drm/bridge: tc358775: Fix drm_of_get_data_lanes_count_ep conversion
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@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
| -rw-r--r-- | drivers/gpu/drm/bridge/tc358775.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/bridge/tc358775.c b/drivers/gpu/drm/bridge/tc358775.c index 5b1fb8e2f9a7..e5d00a6e7880 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 |