svn commit: r196893 - head/sys/dev/ata
Alexander Motin
mav at FreeBSD.org
Sun Sep 6 14:23:27 UTC 2009
Author: mav
Date: Sun Sep 6 14:23:26 2009
New Revision: 196893
URL: http://svn.freebsd.org/changeset/base/196893
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
Modified:
head/sys/dev/ata/ata-dma.c
Modified: head/sys/dev/ata/ata-dma.c
==============================================================================
--- head/sys/dev/ata/ata-dma.c Sun Sep 6 14:05:01 2009 (r196892)
+++ head/sys/dev/ata/ata-dma.c Sun Sep 6 14:23:26 2009 (r196893)
@@ -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) {
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