From: Enric Balletbo i Serra Date: Wed, 26 Aug 2020 08:15:24 +0000 (+0200) Subject: drm/bridge: ps8640: Return an error for incorrect attach flags X-Git-Tag: v5.15~303^2~28^2~2051 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=812a65ba9411c5b3a68e92da061ec91a328774d2;p=platform%2Fkernel%2Flinux-starfive.git drm/bridge: ps8640: Return an error for incorrect attach flags Bridge drivers that implement the new model only shall return an error from their attach() handler when the DRM_BRIDGE_ATTACH_NO_CONNECTOR flag is not set. So make sure we return an error because only the new drm_bridge model is supported. Reviewed-by: Sam Ravnborg Signed-off-by: Enric Balletbo i Serra Reviewed-by: Bilal Wasim Tested-by: Bilal Wasim Signed-off-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20200826081526.674866-4-enric.balletbo@collabora.com --- diff --git a/drivers/gpu/drm/bridge/parade-ps8640.c b/drivers/gpu/drm/bridge/parade-ps8640.c index 13755d2..ce3e8b2 100644 --- a/drivers/gpu/drm/bridge/parade-ps8640.c +++ b/drivers/gpu/drm/bridge/parade-ps8640.c @@ -200,6 +200,10 @@ static int ps8640_bridge_attach(struct drm_bridge *bridge, .channel = 0, .node = NULL, }; + + if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) + return -EINVAL; + /* port@0 is ps8640 dsi input port */ in_ep = of_graph_get_endpoint_by_regs(dev->of_node, 0, -1); if (!in_ep)