[src/trunk]: src/sys/dev/usb Make sure all packets (except the last) have the...

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

details:   https://anonhg.NetBSD.org/src/rev/ade08030fb8d
branches:  trunk
changeset: 483868:ade08030fb8d
user:      augustss <augustss%NetBSD.org@localhost>
date:      Mon Mar 20 00:37:00 2000 +0000

description:
Make sure all packets (except the last) have the maximum packet size even
when using multiple TDs.

diffstat:

 sys/dev/usb/ohci.c |  8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

diffs (22 lines):

diff -r 4d9e3412b9da -r ade08030fb8d sys/dev/usb/ohci.c
--- a/sys/dev/usb/ohci.c        Mon Mar 20 00:27:11 2000 +0000
+++ b/sys/dev/usb/ohci.c        Mon Mar 20 00:37:00 2000 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: ohci.c,v 1.77 2000/03/19 22:24:57 augustss Exp $       */
+/*     $NetBSD: ohci.c,v 1.78 2000/03/20 00:37:00 augustss Exp $       */
 /*     $FreeBSD: src/sys/dev/usb/ohci.c,v 1.22 1999/11/17 22:33:40 n_hibma Exp $       */
 
 /*
@@ -507,6 +507,12 @@
                        /* must use multiple TDs, fill as much as possible. */
                        curlen = 2 * OHCI_PAGE_SIZE - 
                                 (dataphys & (OHCI_PAGE_SIZE-1));
+                       /* the length must be a multiple of the max size */
+                       curlen -= curlen % UGETW(opipe->pipe.endpoint->edesc->wMaxPacketSize);
+#ifdef DIAGNOSTIC
+                       if (curlen == 0)
+                               panic("ohci_alloc_std: curlen == 0\n");
+#endif
                }
                DPRINTFN(4,("ohci_alloc_std_chain: dataphys=0x%08x "
                            "dataphysend=0x%08x len=%d curlen=%d\n",