udev_device_get_parent_with_subsystem_devtype(): Clarify documentation

devtype can be NULL, in which case it is ignored for matching.
2009-12-03 13:25:19 +01:00
parent 89b6237342
commit 54d4f54e85
1 changed files with 3 additions and 0 deletions
@@ -577,6 +577,9 @@ struct udev_device *udev_device_get_parent(struct udev_device *udev_device)
 * value, and fill in information from the sys device and the udev
 * database entry.
 *
+ * If devtype is NULL, only subsystem is checked, and any devtype will
+ * match.
+ *
 * The returned the device is not referenced. It is attached to the
 * child device, and will be cleaned up when the child device
 * is cleaned up.