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-rw-r--r--drivers/ata/libata-scsi.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 3fd08201bef4..c02c490122dc 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -839,7 +839,14 @@ static void ata_scsi_dev_config(struct scsi_device *sdev,
if (dev->class == ATA_DEV_ATAPI) {
struct request_queue *q = sdev->request_queue;
blk_queue_max_hw_segments(q, q->max_hw_segments - 1);
- }
+
+ /* set the min alignment */
+ blk_queue_update_dma_alignment(sdev->request_queue,
+ ATA_DMA_PAD_SZ - 1);
+ } else
+ /* ATA devices must be sector aligned */
+ blk_queue_update_dma_alignment(sdev->request_queue,
+ ATA_SECT_SIZE - 1);
if (dev->class == ATA_DEV_ATA)
sdev->manage_start_stop = 1;
@@ -878,7 +885,7 @@ int ata_scsi_slave_config(struct scsi_device *sdev)
if (dev)
ata_scsi_dev_config(sdev, dev);
- return 0; /* scsi layer doesn't check return value, sigh */
+ return 0;
}
/**