1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
index 5a13b3eeef19..5b07b8848e09 100644
--- a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
+++ b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
@@ -1168,6 +1168,17 @@ static enum drm_connector_status radeon_legacy_tv_dac_detect(struct drm_encoder
         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
         struct radeon_encoder_tv_dac *tv_dac = radeon_encoder->enc_priv;
         bool color = true;
+        struct drm_crtc *crtc;
+
+        /* find out if crtc2 is in use or if this encoder is using it */
+        list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+                struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
+                if ((radeon_crtc->crtc_id == 1) && crtc->enabled) {
+                        if (encoder->crtc != crtc) {
+                                return connector_status_disconnected;
+                        }
+                }
+        }
 
         if (connector->connector_type == DRM_MODE_CONNECTOR_SVIDEO ||
             connector->connector_type == DRM_MODE_CONNECTOR_Composite ||