firewire: fw-sbp2: relax SCSI DMA alignment

Signed-off-by: N Stefan Richter <stefanr@s5r6.in-berlin.de>

firewire: fw-sbp2: relax SCSI DMA alignment
Signed-off-by: N Stefan Richter <stefanr@s5r6.in-berlin.de>
8ac3a47c · Stefan Richter · 1dc3bea7 · 8ac3a47c
隐藏空白更改
内联并排

Showing with 2 addition and 5 deletion

drivers/firewire/fw-sbp2.c drivers/firewire/fw-sbp2.c +2 -5

未找到文件。
--- a/drivers/firewire/fw-sbp2.c
+++ b/drivers/firewire/fw-sbp2.c
@@ -1518,11 +1518,8 @@ static int sbp2_scsi_slave_alloc(struct scsi_device *sdev)

 	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;