[PATCH 4/4] drm: Only print a debug message when the polled connector has changed

[Damien Lespiau]

Suggested-by: Chris Wilson <chris at chris-wilson.co.uk>
Signed-off-by: Damien Lespiau <damien.lespiau at intel.com>
---
 drivers/gpu/drm/drm_crtc_helper.c | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/drm_crtc_helper.c 
b/drivers/gpu/drm/drm_crtc_helper.c
index 9085db6..ed1334e 100644
--- a/drivers/gpu/drm/drm_crtc_helper.c
+++ b/drivers/gpu/drm/drm_crtc_helper.c
@@ -1007,13 +1007,20 @@ 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 %s to 
%s\n",
-                             connector->base.id,
-                             drm_get_connector_name(connector),
-                             drm_get_connector_status_name(old_status),
-                             drm_get_connector_status_name(connector->status));
-               if (old_status != connector->status)
+               if (old_status != connector->status) {
+                       const char *old, *new;
+
+                       old = drm_get_connector_status_name(old_status);
+                       new = drm_get_connector_status_name(connector->status);
+
+                       DRM_DEBUG_KMS("[CONNECTOR:%d:%s] "
+                                     "status updated from %s to %s\n",
+                                     connector->base.id,
+                                     drm_get_connector_name(connector),
+                                     old, new);
+
                        changed = true;
+               }
        }

        mutex_unlock(&dev->mode_config.mutex);
-- 
1.8.1.4