drm: Miscellaneous typo fixes and documentation updates

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
index c29fa9c..45cf1dd 100644
--- a/drivers/gpu/drm/drm_sysfs.c
+++ b/drivers/gpu/drm/drm_sysfs.c
@@ -347,17 +347,17 @@
 };
 
 /**
- * drm_sysfs_connector_add - add an connector to sysfs
+ * drm_sysfs_connector_add - add a connector to sysfs
  * @connector: connector to add
  *
- * Create an connector device in sysfs, along with its associated connector
+ * Create a connector device in sysfs, along with its associated connector
  * properties (so far, connection status, dpms, mode list & edid) and
  * generate a hotplug event so userspace knows there's a new connector
  * available.
  *
  * Note:
- * This routine should only be called *once* for each DRM minor registered.
- * A second call for an already registered device will trigger the BUG_ON
+ * This routine should only be called *once* for each registered connector.
+ * A second call for an already registered connector will trigger the BUG_ON
  * below.
  */
 int drm_sysfs_connector_add(struct drm_connector *connector)