drm: Use a nondestructive mode for output detect when polling

[net-next-2.6.git] / drivers / gpu / drm / i915 / intel_tv.c

diff --git a/drivers/gpu/drm/i915/intel_tv.c b/drivers/gpu/drm/i915/intel_tv.c
index c671f60ce80bac917a61c1c60cdb02e692afcb85..d20b550c0f55594de4e2e59e3087ed4a62cab8f5 100644 (file)
--- a/drivers/gpu/drm/i915/intel_tv.c
+++ b/drivers/gpu/drm/i915/intel_tv.c
@@ -1341,7 +1341,8 @@ static void intel_tv_find_better_format(struct drm_connector *connector)
  * we have a pipe programmed in order to probe the TV.
  */
 static enum drm_connector_status
-intel_tv_detect(struct drm_connector *connector)
+intel_tv_detect(struct drm_connector *connector,
+               bool nondestructive)
 {
        struct drm_display_mode mode;
        struct drm_encoder *encoder = intel_attached_encoder(connector);
@@ -1353,7 +1354,7 @@ intel_tv_detect(struct drm_connector *connector)
 
        if (encoder->crtc && encoder->crtc->enabled) {
                type = intel_tv_detect_type(intel_tv);
-       } else {
+       } else if (nondestructive) {
                struct drm_crtc *crtc;
                int dpms_mode;
 
@@ -1364,10 +1365,9 @@ intel_tv_detect(struct drm_connector *connector)
                        intel_release_load_detect_pipe(&intel_tv->base, connector,
                                                       dpms_mode);
                } else
-                       type = -1;
-       }
-
-       intel_tv->type = type;
+                       return connector_status_unknown;
+       } else
+               return connector->status;
 
        if (type < 0)
                return connector_status_disconnected;