From: Lyude Paul <lyude@xxxxxxxxxx> [ Upstream commit 212ee8db84600f7b279b8645c62a112bff310995 ] Just another issue I noticed while correcting usages of drm_dp_aux_init()/drm_dp_aux_register() around the tree. If any of the steps in anx78xx_bridge_attach() fail, we end up leaking resources. So, let's fix that (and fix leaking a DP AUX adapter in the process) by unrolling on errors. Signed-off-by: Lyude Paul <lyude@xxxxxxxxxx> Reviewed-by: Robert Foss <robert.foss@xxxxxxxxxx> Link: https://patchwork.freedesktop.org/patch/msgid/20210219215326.2227596-10-lyude@xxxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/gpu/drm/bridge/analogix-anx78xx.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/bridge/analogix-anx78xx.c b/drivers/gpu/drm/bridge/analogix-anx78xx.c index 16babacb7cf0..5a1121af6664 100644 --- a/drivers/gpu/drm/bridge/analogix-anx78xx.c +++ b/drivers/gpu/drm/bridge/analogix-anx78xx.c @@ -1039,7 +1039,7 @@ static int anx78xx_bridge_attach(struct drm_bridge *bridge) DRM_MODE_CONNECTOR_DisplayPort); if (err) { DRM_ERROR("Failed to initialize connector: %d\n", err); - return err; + goto aux_unregister; } drm_connector_helper_add(&anx78xx->connector, @@ -1051,16 +1051,21 @@ static int anx78xx_bridge_attach(struct drm_bridge *bridge) bridge->encoder); if (err) { DRM_ERROR("Failed to link up connector to encoder: %d\n", err); - return err; + goto connector_cleanup; } err = drm_connector_register(&anx78xx->connector); if (err) { DRM_ERROR("Failed to register connector: %d\n", err); - return err; + goto connector_cleanup; } return 0; +connector_cleanup: + drm_connector_cleanup(&anx78xx->connector); +aux_unregister: + drm_dp_aux_unregister(&anx78xx->aux); + return err; } static bool anx78xx_bridge_mode_fixup(struct drm_bridge *bridge, -- 2.30.2
