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From: Marcel Moolenaar <marcel@FreeBSD.org>
Date: Mon, 7 Jun 2010 03:08:52 +0000 (UTC)
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Subject: svn commit: r208882 - projects/altix/sys/dev/usb
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Author: marcel
Date: Mon Jun  7 03:08:52 2010
New Revision: 208882
URL: http://svn.freebsd.org/changeset/base/208882

Log:
  Don't call bus_dmamap_sync() with a NULL dmamap.

Modified:
  projects/altix/sys/dev/usb/usb_busdma.c

Modified: projects/altix/sys/dev/usb/usb_busdma.c
==============================================================================
--- projects/altix/sys/dev/usb/usb_busdma.c	Sun Jun  6 22:27:32 2010	(r208881)
+++ projects/altix/sys/dev/usb/usb_busdma.c	Mon Jun  7 03:08:52 2010	(r208882)
@@ -675,7 +675,7 @@ usb_pc_load_mem(struct usb_page_cache *p
 void
 usb_pc_cpu_invalidate(struct usb_page_cache *pc)
 {
-	if (pc->page_offset_end == pc->page_offset_buf) {
+	if (pc->page_offset_end == pc->page_offset_buf || pc->map == NULL) {
 		/* nothing has been loaded into this page cache! */
 		return;
 	}
@@ -695,7 +695,7 @@ usb_pc_cpu_invalidate(struct usb_page_ca
 void
 usb_pc_cpu_flush(struct usb_page_cache *pc)
 {
-	if (pc->page_offset_end == pc->page_offset_buf) {
+	if (pc->page_offset_end == pc->page_offset_buf || pc->map == NULL) {
 		/* nothing has been loaded into this page cache! */
 		return;
 	}