svn commit: r361577 - head/sys/dev/usb

[Hans Petter Selasky]

Author: hselasky
Date: Thu May 28 08:05:46 2020
New Revision: 361577
URL: https://svnweb.freebsd.org/changeset/base/361577

Log:
  Don't allow USB device drivers to parent own interface.
  It will prevent proper USB device detach.
  
  MFC after:	3 days
  Sponsored by:	Mellanox Technologies

Modified:
  head/sys/dev/usb/usb_device.c

Modified: head/sys/dev/usb/usb_device.c
==============================================================================
--- head/sys/dev/usb/usb_device.c	Thu May 28 08:00:08 2020	(r361576)
+++ head/sys/dev/usb/usb_device.c	Thu May 28 08:05:46 2020	(r361577)
@@ -1402,7 +1402,7 @@ usbd_set_parent_iface(struct usb_device *udev, uint8_t
 {
 	struct usb_interface *iface;
 
-	if (udev == NULL) {
+	if (udev == NULL || iface_index == parent_index) {
 		/* nothing to do */
 		return;
 	}