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From: Alexander Motin <mav@FreeBSD.org>
Date: Fri, 25 Sep 2009 18:07:24 +0000 (UTC)
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Subject: svn commit: r197495 - in stable/8/sys: . amd64/include/xen
	cddl/contrib/opensolaris contrib/dev/acpica contrib/pf
	dev/ata dev/xen/xenpci
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Author: mav
Date: Fri Sep 25 18:07:23 2009
New Revision: 197495
URL: http://svn.freebsd.org/changeset/base/197495

Log:
  Remove constraint, requiring request data to fulfill controller's
  alignment requirements. It is busdma task, to manage proper alignment by
  loading data to bounce buffers.
  
  PR:		kern/127316
  Reviewed by:	current@
  Tested by:	Ryan Rogers
  Approved by:	re (kib)

Modified:
  stable/8/sys/   (props changed)
  stable/8/sys/amd64/include/xen/   (props changed)
  stable/8/sys/cddl/contrib/opensolaris/   (props changed)
  stable/8/sys/contrib/dev/acpica/   (props changed)
  stable/8/sys/contrib/pf/   (props changed)
  stable/8/sys/dev/ata/ata-dma.c
  stable/8/sys/dev/xen/xenpci/   (props changed)

Modified: stable/8/sys/dev/ata/ata-dma.c
==============================================================================
--- stable/8/sys/dev/ata/ata-dma.c	Fri Sep 25 18:04:55 2009	(r197494)
+++ stable/8/sys/dev/ata/ata-dma.c	Fri Sep 25 18:07:23 2009	(r197495)
@@ -272,10 +272,10 @@ ata_dmaload(struct ata_request *request,
 		      "FAILURE - zero length DMA transfer attempted\n");
 	return EIO;
     }
-    if (((uintptr_t)(request->data) & (ch->dma.alignment - 1)) ||
-	(request->bytecount & (ch->dma.alignment - 1))) {
+    if (request->bytecount & (ch->dma.alignment - 1)) {
 	device_printf(request->dev,
-		      "FAILURE - non aligned DMA transfer attempted\n");
+		      "FAILURE - odd-sized DMA transfer attempt %d %% %d\n",
+		      request->bytecount, ch->dma.alignment);
 	return EIO;
     }
     if (request->bytecount > ch->dma.max_iosize) {