[src/trunk]: src/sys/external/bsd/dwc2 Calulate the right lenght for isoc tra...

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

details:   https://anonhg.NetBSD.org/src/rev/760a37855522
branches:  trunk
changeset: 846887:760a37855522
user:      skrll <skrll%NetBSD.org@localhost>
date:      Tue Dec 03 14:38:48 2019 +0000

description:
Calulate the right lenght for isoc transfer and the usb_syncmem

PR/54696: Kernel panic in bus_dma.c on Raspberry Pi 3B/3B+

diffstat:

 sys/external/bsd/dwc2/dwc2.c |  11 +++++++++--
 1 files changed, 9 insertions(+), 2 deletions(-)

diffs (32 lines):

diff -r 33d858641a35 -r 760a37855522 sys/external/bsd/dwc2/dwc2.c
--- a/sys/external/bsd/dwc2/dwc2.c      Tue Dec 03 14:35:49 2019 +0000
+++ b/sys/external/bsd/dwc2/dwc2.c      Tue Dec 03 14:38:48 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: dwc2.c,v 1.63 2019/12/03 14:35:49 skrll Exp $  */
+/*     $NetBSD: dwc2.c,v 1.64 2019/12/03 14:38:48 skrll Exp $  */
 
 /*-
  * Copyright (c) 2013 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: dwc2.c,v 1.63 2019/12/03 14:35:49 skrll Exp $");
+__KERNEL_RCSID(0, "$NetBSD: dwc2.c,v 1.64 2019/12/03 14:38:48 skrll Exp $");
 
 #include "opt_usb.h"
 
@@ -1015,6 +1015,13 @@
                DPRINTFN(3, "req = %p dma = %" PRIxBUSADDR " len %d dir %s\n",
                    KERNADDR(&dpipe->req_dma, 0), DMAADDR(&dpipe->req_dma, 0),
                    len, dir == UE_DIR_IN ? "in" : "out");
+       } else if (xfertype == UE_ISOCHRONOUS) {
+               DPRINTFN(3, "xfer=%p nframes=%d flags=%d addr=%d endpt=%d,"
+                   " mps=%d dir %s\n", xfer, xfer->ux_nframes, xfer->ux_flags, addr,
+                   epnum, mps, dir == UT_READ ? "in" :"out");
+
+               for (len = i = 0; i < xfer->ux_nframes; i++)
+                       len += xfer->ux_frlengths[i];
        } else {
                DPRINTFN(3, "xfer=%p len=%d flags=%d addr=%d endpt=%d,"
                    " mps=%d dir %s\n", xfer, xfer->ux_length, xfer->ux_flags, addr,