From owner-p4-projects@FreeBSD.ORG  Sun Dec  2 01:13:59 2007
Return-Path: <owner-p4-projects@FreeBSD.ORG>
Delivered-To: p4-projects@freebsd.org
Received: by hub.freebsd.org (Postfix, from userid 32767)
	id D7D8916A41B; Sun,  2 Dec 2007 01:13:58 +0000 (UTC)
Delivered-To: perforce@FreeBSD.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 8821F16A419
	for <perforce@FreeBSD.org>; Sun,  2 Dec 2007 01:13:58 +0000 (UTC)
	(envelope-from hselasky@FreeBSD.org)
Received: from repoman.freebsd.org (repoman.freebsd.org
	[IPv6:2001:4f8:fff6::29])
	by mx1.freebsd.org (Postfix) with ESMTP id 790DC13C45A
	for <perforce@FreeBSD.org>; Sun,  2 Dec 2007 01:13:58 +0000 (UTC)
	(envelope-from hselasky@FreeBSD.org)
Received: from repoman.freebsd.org (localhost [127.0.0.1])
	by repoman.freebsd.org (8.14.1/8.14.1) with ESMTP id lB21DwPa023213
	for <perforce@FreeBSD.org>; Sun, 2 Dec 2007 01:13:58 GMT
	(envelope-from hselasky@FreeBSD.org)
Received: (from perforce@localhost)
	by repoman.freebsd.org (8.14.1/8.14.1/Submit) id lB21Dwtm023210
	for perforce@freebsd.org; Sun, 2 Dec 2007 01:13:58 GMT
	(envelope-from hselasky@FreeBSD.org)
Date: Sun, 2 Dec 2007 01:13:58 GMT
Message-Id: <200712020113.lB21Dwtm023210@repoman.freebsd.org>
X-Authentication-Warning: repoman.freebsd.org: perforce set sender to
	hselasky@FreeBSD.org using -f
From: Hans Petter Selasky <hselasky@FreeBSD.org>
To: Perforce Change Reviews <perforce@FreeBSD.org>
Cc: 
Subject: PERFORCE change 129943 for review
X-BeenThere: p4-projects@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: p4 projects tree changes <p4-projects.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/p4-projects>,
	<mailto:p4-projects-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/p4-projects>
List-Post: <mailto:p4-projects@freebsd.org>
List-Help: <mailto:p4-projects-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/p4-projects>,
	<mailto:p4-projects-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 02 Dec 2007 01:13:59 -0000

http://perforce.freebsd.org/chv.cgi?CH=129943

Change 129943 by hselasky@hselasky_laptop001 on 2007/12/02 01:13:50

	
	Remove some alignment requirements. We assume that all 
	USB DMA hardware supports byte aligment.

Affected files ...

.. //depot/projects/usb/src/sys/dev/usb/usb_transfer.c#57 edit

Differences ...

==== //depot/projects/usb/src/sys/dev/usb/usb_transfer.c#57 (text+ko) ====

@@ -403,28 +403,6 @@
 	} else {
 
 		/*
-		 * BSD specific requirement:
-		 *
-		 * In case we are transferring more than one USB frame
-		 * consisting of up to 3 USB packets, make sure that the USB
-		 * frame size is divisible by 8. This is supposed to
-		 * optimize the USB Host Controller by avoiding unaligned
-		 * data accesses!
-		 */
-
-		if (parm->bufsize > xfer->max_frame_size) {
-
-			while (xfer->max_frame_size & 7) {
-				if (xfer->max_packet_size == parm->hc_max_packet_size) {
-					/* should not happen */
-					parm->err = USBD_INVAL;
-					goto done;
-				}
-				(xfer->max_packet_size)++;
-				usbd_compute_max_frame_size(xfer);
-			}
-		}
-		/*
 		 * if a value is specified use that else check the endpoint
 		 * descriptor
 		 */