From: Stefan Richter <stefanr@s5r6.in-berlin.de>
To: linux1394-devel@lists.sourceforge.net
Cc: linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org
Subject: [PATCH 2.6.24-git3] firewire: fw-sbp2: relax SCSI DMA alignment
Date: Sun, 27 Jan 2008 22:31:27 +0100 (CET) [thread overview]
Message-ID: <tkrat.6b01fb9bb536c584@s5r6.in-berlin.de> (raw)
In-Reply-To: <1201373642.4387.0.camel@localhost.localdomain>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
---
Not run-time tested yet.
drivers/firewire/fw-sbp2.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
Index: linux-2.6.24-git3/drivers/firewire/fw-sbp2.c
===================================================================
--- linux-2.6.24-git3.orig/drivers/firewire/fw-sbp2.c
+++ linux-2.6.24-git3/drivers/firewire/fw-sbp2.c
@@ -1309,11 +1309,8 @@ static int sbp2_scsi_slave_alloc(struct
sdev->allow_restart = 1;
- /*
- * Update the dma alignment (minimum alignment requirements for
- * start and end of DMA transfers) to be a sector
- */
- blk_queue_update_dma_alignment(sdev->request_queue, 511);
+ /* SBP-2 requires quadlet alignment of the data buffers. */
+ blk_queue_update_dma_alignment(sdev->request_queue, 4 - 1);
if (lu->tgt->workarounds & SBP2_WORKAROUND_INQUIRY_36)
sdev->inquiry_len = 36;
--
Stefan Richter
-=====-==--- ---= ==-==
http://arcgraph.de/sr/
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next prev parent reply other threads:[~2008-01-27 21:31 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-26 18:49 on patch "[SCSI] relax scsi dma alignment" Stefan Richter
2008-01-26 18:54 ` James Bottomley
2008-01-27 21:31 ` Stefan Richter [this message]
2008-01-27 21:32 ` [PATCH 2.6.24-git3] ieee1394: sbp2: relax SCSI DMA alignment Stefan Richter
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