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From: Weongyo Jeong <weongyo@FreeBSD.org>
Date: Mon, 20 Sep 2010 18:49:29 +0000 (UTC)
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Subject: svn commit: r212913 - user/weongyo/usb/sys/dev/usb
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Author: weongyo
Date: Mon Sep 20 18:49:28 2010
New Revision: 212913
URL: http://svn.freebsd.org/changeset/base/212913

Log:
  Don't check `align' value 0 whenever it multiplies alignment value and
  2 that it looks it's meaningless.

Modified:
  user/weongyo/usb/sys/dev/usb/usb_busdma.c

Modified: user/weongyo/usb/sys/dev/usb/usb_busdma.c
==============================================================================
--- user/weongyo/usb/sys/dev/usb/usb_busdma.c	Mon Sep 20 18:41:15 2010	(r212912)
+++ user/weongyo/usb/sys/dev/usb/usb_busdma.c	Mon Sep 20 18:49:28 2010	(r212913)
@@ -490,18 +490,16 @@ usb_pc_alloc_mem(struct usb_page_cache *
 
 	uptag = pc->tag_parent;
 
+	if (align == 0)
+		goto error;
 	if (align != 1) {
 		/*
 	         * The alignment must be greater or equal to the
 	         * "size" else the object can be split between two
 	         * memory pages and we get a problem!
 	         */
-		while (align < size) {
+		while (align < size)
 			align *= 2;
-			if (align == 0) {
-				goto error;
-			}
-		}
 #if 1
 		/*
 		 * XXX BUS-DMA workaround - FIXME later: