[PATCH] drm: Always show the probed connector status

[Chris Wilson]

Otherwise if the connector is left in an unknown status, we leave the
function without any trace leaving me quite confused as to where the
output went.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/drm_crtc_helper.c |   28 ++++++++++++++++++++++++----
 1 files changed, 24 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c
index 8de333a..b5458fd 100644
--- a/drivers/gpu/drm/drm_crtc_helper.c
+++ b/drivers/gpu/drm/drm_crtc_helper.c
@@ -37,6 +37,20 @@
 static bool drm_kms_helper_poll = true;
 module_param_named(poll, drm_kms_helper_poll, bool, 0600);
 
+static const char *drm_status_to_string(int status)
+{
+	switch (status) {
+	case connector_status_disconnected:
+		return "disconnected";
+	case connector_status_connected:
+		return "connected";
+	case connector_status_unknown:
+		return "unknown";
+	default:
+		return "invalid";
+	}
+}
+
 static void drm_mode_validate_flag(struct drm_connector *connector,
 				   int flags)
 {
@@ -107,9 +121,12 @@ int drm_helper_probe_single_connector_modes(struct drm_connector *connector,
 		drm_kms_helper_poll_enable(dev);
 	}
 
+	DRM_DEBUG_KMS("[CONNECTOR:%d:%s], status=%s\n",
+		      connector->base.id,
+		      drm_get_connector_name(connector),
+		      drm_status_to_string(connector->status));
+
 	if (connector->status == connector_status_disconnected) {
-		DRM_DEBUG_KMS("[CONNECTOR:%d:%s] disconnected\n",
-			connector->base.id, drm_get_connector_name(connector));
 		drm_mode_connector_update_edid_property(connector, NULL);
 		goto prune;
 	}
@@ -885,10 +902,13 @@ static void output_poll_execute(struct work_struct *work)
 			continue;
 
 		connector->status = connector->funcs->detect(connector, false);
-		DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %d to %d\n",
+		DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %s [%d] to %s [%d]\n",
 			      connector->base.id,
 			      drm_get_connector_name(connector),
-			      old_status, connector->status);
+			      drm_status_to_string(old_status),
+			      old_status,
+			      drm_status_to_string(connector->status),
+			      connector->status);
 		if (old_status != connector->status)
 			changed = true;
 	}
-- 
1.7.2.3