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drm/rockchip: Avoid uninitialized use of endpoint id in LVDS 

In the Rockchip DRM LVDS component driver, the endpoint id provided to
drm_of_find_panel_or_bridge is grabbed from the endpoint's reg property.

However, the property may be missing in the case of a single endpoint.
Initialize the endpoint_id variable to 0 to avoid using an
uninitialized variable in that case.

Fixes: 34cc0aa254 ("drm/rockchip: Add support for Rockchip Soc LVDS")
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20201110200430.1713467-1-paul.kocialkowski@bootlin.com
This commit is contained in:
Paul Kocialkowski 2020-11-10 21:04:30 +01:00 committed by Heiko Stuebner
parent aea656b0d0
commit aec9fe8928
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/rockchip/rockchip_lvds.c
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@ -544,7 +544,7 @@ static int rockchip_lvds_bind(struct device *dev, struct device *master,
struct device_node *port, *endpoint;
int ret = 0, child_count = 0;
const char *name;
u32 endpoint_id;
u32 endpoint_id = 0;
lvds->drm_dev = drm_dev;
port = of_graph_get_port_by_id(dev->of_node, 1);