drm: Make drm_connector_register() safe against multiple calls
Protect against drivers that may try to register the connector more
than once, or who try to unregister it multiple times.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Dave Airlie <airlied@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1465993109-19523-4-git-send-email-chris@chris-wilson.co.uk
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 4cc170c..c273497 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -1193,6 +1193,7 @@
* @interlace_allowed: can this connector handle interlaced modes?
* @doublescan_allowed: can this connector handle doublescan?
* @stereo_allowed: can this connector handle stereo modes?
+ * @registered: is this connector exposed (registered) with userspace?
* @modes: modes available on this connector (from fill_modes() + user)
* @status: one of the drm_connector_status enums (connected, not, or unknown)
* @probed_modes: list of modes derived directly from the display
@@ -1249,6 +1250,7 @@
bool interlace_allowed;
bool doublescan_allowed;
bool stereo_allowed;
+ bool registered;
struct list_head modes; /* list of modes on this connector */
enum drm_connector_status status;