Author: hselasky
Date: Wed Jan 30 07:48:43 2013
New Revision: 246113
URL: http://svnweb.freebsd.org/changeset/base/246113
Log:
Add missing NULL pointer check.
Reported by: Lars Engels
MFC after: 1 week
Modified:
head/sys/dev/usb/controller/xhci.c
Modified: head/sys/dev/usb/controller/xhci.c
==============================================================================
--- head/sys/dev/usb/controller/xhci.c Wed Jan 30 06:37:18 2013
(r246112)
+++ head/sys/dev/usb/controller/xhci.c Wed Jan 30 07:48:43 2013
(r246113)
@@ -886,6 +886,12 @@ xhci_check_transfer(struct xhci_softc *s
* a short packet also makes the transfer done
*/
if (td->remainder > 0) {
+ if (td->alt_next == NULL) {
+ DPRINTF("short TD has no "
+ "alternate next\n");
+ xhci_generic_done(xfer);
+ break;
+ }
DPRINTF("TD has short pkt\n");
if (xfer->flags_int.short_frames_ok ||
xfer->flags_int.isochronous_xfr ||
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