Only call that function if something has actually changed (i.e. in the output polling or hdp handling functions) or when userspace asks for the information and DRM_CONNECTOR_POLL_FORCE is set.
Let's see how many bugs this uncovers.
v2: Run ->detect if the current connector status is 'unknown' - otherwise we won't ever detect the boot-up/resume state correctly.
Signed-Off-by: Daniel Vetter daniel.vetter@ffwll.ch --- drivers/gpu/drm/drm_crtc_helper.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c index 8ea1c1e..db93e4d 100644 --- a/drivers/gpu/drm/drm_crtc_helper.c +++ b/drivers/gpu/drm/drm_crtc_helper.c @@ -107,7 +107,8 @@ int drm_helper_probe_single_connector_modes(struct drm_connector *connector, connector->status = connector_status_disconnected; if (connector->funcs->force) connector->funcs->force(connector); - } else { + } else if (connector->polled & DRM_CONNECTOR_POLL_FORCE || + connector->status == connector_status_unknown) { connector->status = connector->funcs->detect(connector, true); drm_kms_helper_poll_enable(dev); }