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Make sure all packets (except the last) have the maximum packet size even 

when using multiple TDs.
This commit is contained in:
augustss 2000-03-20 00:37:00 +00:00
parent 89de970942
commit eb6e78ce98
1 changed files with 7 additions and 1 deletions
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8
sys/dev/usb/ohci.c
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@ -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 @@ ohci_alloc_std_chain(opipe, sc, alen, rd, xfer, sp, ep)
/* 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",