[PATCH 2.6.24-git3] firewire: fw-sbp2: relax SCSI DMA alignment

[Stefan Richter]

Signed-off-by: Stefan Richter <stefanr@xxxxxxxxxxxxxxxxx>
---

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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