From: Paul Kocialkowski Date: Tue, 10 Nov 2020 20:04:30 +0000 (+0100) Subject: drm/rockchip: Avoid uninitialized use of endpoint id in LVDS X-Git-Tag: v5.9.15~84 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ddfe8fbf9b635b6277715c7040c8ce393bf3a39c;p=thirdparty%2Fkernel%2Fstable.git drm/rockchip: Avoid uninitialized use of endpoint id in LVDS [ Upstream commit aec9fe892812ed10d0bffcf309d2a8fc380d8ce6 ] 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: 34cc0aa25456 ("drm/rockchip: Add support for Rockchip Soc LVDS") Signed-off-by: Paul Kocialkowski Signed-off-by: Heiko Stuebner Link: https://patchwork.freedesktop.org/patch/msgid/20201110200430.1713467-1-paul.kocialkowski@bootlin.com Signed-off-by: Sasha Levin --- diff --git a/drivers/gpu/drm/rockchip/rockchip_lvds.c b/drivers/gpu/drm/rockchip/rockchip_lvds.c index 63f967902c2d8..a29912f3b997e 100644 --- a/drivers/gpu/drm/rockchip/rockchip_lvds.c +++ b/drivers/gpu/drm/rockchip/rockchip_lvds.c @@ -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);