From: Chen Ni Date: Fri, 6 Feb 2026 04:06:21 +0000 (+0800) Subject: drm/bridge: synopsys: dw-dp: Check return value of devm_drm_bridge_add() in dw_dp_bind() X-Git-Tag: v7.0-rc2~27^2~2^2~15 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=496daa2759260374bb9c9b2196a849aa3bc513a8;p=thirdparty%2Fkernel%2Flinux.git drm/bridge: synopsys: dw-dp: Check return value of devm_drm_bridge_add() in dw_dp_bind() Return the value of devm_drm_bridge_add() in order to propagate the error properly, if it fails due to resource allocation failure or bridge registration failure. This ensures that the bind function fails safely rather than proceeding with a potentially incomplete bridge setup. Fixes: b726970486d8 ("drm/bridge: synopsys: dw-dp: add bridge before attaching") Signed-off-by: Chen Ni Reviewed-by: Andy Yan Reviewed-by: Luca Ceresoli Link: https://patch.msgid.link/20260206040621.4095517-1-nichen@iscas.ac.cn Signed-off-by: Luca Ceresoli --- diff --git a/drivers/gpu/drm/bridge/synopsys/dw-dp.c b/drivers/gpu/drm/bridge/synopsys/dw-dp.c index 4323424524847..07f7a2e0d9f2a 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-dp.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-dp.c @@ -2049,7 +2049,9 @@ struct dw_dp *dw_dp_bind(struct device *dev, struct drm_encoder *encoder, bridge->type = DRM_MODE_CONNECTOR_DisplayPort; bridge->ycbcr_420_allowed = true; - devm_drm_bridge_add(dev, bridge); + ret = devm_drm_bridge_add(dev, bridge); + if (ret) + return ERR_PTR(ret); dp->aux.dev = dev; dp->aux.drm_dev = encoder->dev;