drm: Don't try and disable an encoder that was never enabled

Commit Message

Chris Wilson Dec. 6, 2010, 11:24 a.m. UTC

None

Patch

diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c
index 7ca5935..bede10a 100644
--- a/drivers/gpu/drm/drm_crtc_helper.c
+++ b/drivers/gpu/drm/drm_crtc_helper.c
@@ -241,7 +241,7 @@  void drm_helper_disable_unused_functions(struct drm_device *dev)
 	}
 
 	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
-		if (!drm_helper_encoder_in_use(encoder)) {
+		if (encoder->crtc && !drm_helper_encoder_in_use(encoder)) {
 			drm_encoder_disable(encoder);
 			/* disconnector encoder from any connector */
 			encoder->crtc = NULL;