svn commit: r352554 - head/sys/dev/usb/controller

[Hans Petter Selasky]

Author: hselasky
Date: Fri Sep 20 10:56:13 2019
New Revision: 352554
URL: https://svnweb.freebsd.org/changeset/base/352554

Log:
  The maximum TD size is 31 and not 15.
  
  Found at:	EuroBSDcon 2019
  MFC after:	1 week
  Sponsored by:	Mellanox Technologies

Modified:
  head/sys/dev/usb/controller/xhci.c

Modified: head/sys/dev/usb/controller/xhci.c
==============================================================================
--- head/sys/dev/usb/controller/xhci.c	Fri Sep 20 09:45:38 2019	(r352553)
+++ head/sys/dev/usb/controller/xhci.c	Fri Sep 20 10:56:13 2019	(r352554)
@@ -2003,7 +2003,7 @@ restart:
 
 	/* clear TD SIZE to zero, hence this is the last TRB */
 	/* remove chain bit because this is the last data TRB in the chain */
-	td->td_trb[td->ntrb - 1].dwTrb2 &= ~htole32(XHCI_TRB_2_TDSZ_SET(15));
+	td->td_trb[td->ntrb - 1].dwTrb2 &= ~htole32(XHCI_TRB_2_TDSZ_SET(31));
 	td->td_trb[td->ntrb - 1].dwTrb3 &= ~htole32(XHCI_TRB_3_CHAIN_BIT);
 	/* remove CHAIN-BIT from last LINK TRB */
 	td->td_trb[td->ntrb].dwTrb3 &= ~htole32(XHCI_TRB_3_CHAIN_BIT);