[src/nick-nhusb]: src/sys/dev/usb Fix the fix... look a the correct list of T...

[skrll <skrll%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/a338633af3e8
branches:  nick-nhusb
changeset: 804521:a338633af3e8
user:      skrll <skrll%NetBSD.org@localhost>
date:      Sat Feb 06 08:47:06 2016 +0000

description:
Fix the fix... look a the correct list of TDs when aborting a transfer

diffstat:

 sys/dev/usb/ehci.c |  14 ++++++++++----
 1 files changed, 10 insertions(+), 4 deletions(-)

diffs (57 lines):

diff -r bf3496046c27 -r a338633af3e8 sys/dev/usb/ehci.c
--- a/sys/dev/usb/ehci.c        Sat Feb 06 08:01:57 2016 +0000
+++ b/sys/dev/usb/ehci.c        Sat Feb 06 08:47:06 2016 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: ehci.c,v 1.234.2.79 2016/01/11 22:24:58 skrll Exp $ */
+/*     $NetBSD: ehci.c,v 1.234.2.80 2016/02/06 08:47:06 skrll Exp $ */
 
 /*
  * Copyright (c) 2004-2012 The NetBSD Foundation, Inc.
@@ -53,7 +53,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ehci.c,v 1.234.2.79 2016/01/11 22:24:58 skrll Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ehci.c,v 1.234.2.80 2016/02/06 08:47:06 skrll Exp $");
 
 #include "ohci.h"
 #include "uhci.h"
@@ -877,6 +877,8 @@
            sizeof(lsqtd->qtd.qtd_status), BUS_DMASYNC_PREREAD);
        if (status & EHCI_QTD_ACTIVE) {
                USBHIST_LOGN(ehcidebug, 10, "active ex=%p", ex, 0, 0, 0);
+
+               /* last qTD has already been checked */
                for (sqtd = fsqtd; sqtd != lsqtd; sqtd = sqtd->nextqtd) {
                        usb_syncmem(&sqtd->dma,
                            sqtd->offs + offsetof(ehci_qtd_t, qtd_status),
@@ -3281,7 +3283,7 @@
                fsqtd = exfer->ex_sqtdstart;
                lsqtd = exfer->ex_sqtdend;
        }
-       for (sqtd = fsqtd; sqtd != lsqtd; sqtd = sqtd->nextqtd) {
+       for (sqtd = fsqtd; ; sqtd = sqtd->nextqtd) {
                usb_syncmem(&sqtd->dma,
                    sqtd->offs + offsetof(ehci_qtd_t, qtd_status),
                    sizeof(sqtd->qtd.qtd_status),
@@ -3291,6 +3293,8 @@
                    sqtd->offs + offsetof(ehci_qtd_t, qtd_status),
                    sizeof(sqtd->qtd.qtd_status),
                    BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
+               if (sqtd == lsqtd)
+                       break;
        }
 
        /*
@@ -3317,8 +3321,10 @@
            BUS_DMASYNC_POSTWRITE | BUS_DMASYNC_POSTREAD);
        cur = EHCI_LINK_ADDR(le32toh(sqh->qh.qh_curqtd));
        hit = 0;
-       for (sqtd = fsqtd; sqtd != lsqtd; sqtd = sqtd->nextqtd) {
+       for (sqtd = fsqtd; ; sqtd = sqtd->nextqtd) {
                hit |= cur == sqtd->physaddr;
+               if (sqtd == lsqtd)
+                       break;
        }
        sqtd = sqtd->nextqtd;
        /* Zap curqtd register if hardware pointed inside the xfer. */