Hello Alex Deucher,

This is a semi-automatic email about new static checker warnings.

The patch 643b1f5629a3: "drm/radeon: implement output csc property for DCE5+" from Feb 23, 2015, leads to the following Smatch complaint:

drivers/gpu/drm/radeon/radeon_connectors.c:763 radeon_connector_set_property() error: we previously assumed 'connector->encoder' could be null (see line 751)

drivers/gpu/drm/radeon/radeon_connectors.c 750 if (property == rdev->mode_info.output_csc_property) { 751 if (connector->encoder) ^^^^^^^^^^^^^^^^^^ Check.

752 radeon_encoder = to_radeon_encoder(connector->encoder); 753 else { 754 struct drm_connector_helper_funcs *connector_funcs = connector->helper_private; 755 radeon_encoder = to_radeon_encoder(connector_funcs->best_encoder(connector)); 756 } 757 758 if (radeon_encoder->output_csc == val) 759 return 0; 760 761 radeon_encoder->output_csc = val; 762 763 if (connector->encoder->crtc) { ^^^^^^^^^^^^^^^^^^ Unchecked dereference.

764 struct drm_crtc *crtc = connector->encoder->crtc; 765 struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;

regards, dan carpenter