svn commit: r221150 - stable/8/sys/dev/usb/controller

[Hans Petter Selasky]

Author: hselasky
Date: Thu Apr 28 06:54:38 2011
New Revision: 221150
URL: http://svn.freebsd.org/changeset/base/221150

Log:
  MFC r221073.
  Fix for missing EHCI datatoggle change case.
  
  Approved by:	thompsa

Modified:
  stable/8/sys/dev/usb/controller/ehci.c
Directory Properties:
  stable/8/sys/   (props changed)
  stable/8/sys/amd64/include/xen/   (props changed)
  stable/8/sys/cddl/contrib/opensolaris/   (props changed)
  stable/8/sys/contrib/dev/acpica/   (props changed)
  stable/8/sys/contrib/pf/   (props changed)

Modified: stable/8/sys/dev/usb/controller/ehci.c
==============================================================================
--- stable/8/sys/dev/usb/controller/ehci.c	Thu Apr 28 06:51:47 2011	(r221149)
+++ stable/8/sys/dev/usb/controller/ehci.c	Thu Apr 28 06:54:38 2011	(r221150)
@@ -1196,6 +1196,8 @@ ehci_data_toggle_update(struct usb_xfer 
 		dt ^= 1;	/* short packet at the end */
 	else if (actlen != xlen)
 		dt ^= 1;	/* zero length packet at the end */
+	else if (xlen == 0)
+		dt ^= 1;	/* zero length transfer */
 
 	xfer->endpoint->toggle_next ^= dt;
 }