Date: Wed, 30 Jan 2013 07:48:44 +0000 (UTC) From: Hans Petter Selasky <hselasky@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r246113 - head/sys/dev/usb/controller Message-ID: <201301300748.r0U7mihL044630@svn.freebsd.org>
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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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