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authorChristoph Hellwig <hch@lst.de>2014-06-28 16:41:43 +0200
committerChristoph Hellwig <hch@lst.de>2014-07-17 22:11:41 +0200
commit5158a899d8f24f74cad29b6aaad2b0f86499e5d5 (patch)
treef5faad5530e2e0e38dcd0bc75777da075976fe29 /drivers/scsi/scsi_lib.c
parent3868cf8ea70a57fc3f927872d8296f287ce4b96a (diff)
scsi: set sc_data_direction in common code
The data direction fiel in the SCSI command is derived only from the block request structure. Move setting it up into common code instead of duplicating it in the ULDs. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Hannes Reinecke <hare@suse.de>
Diffstat (limited to 'drivers/scsi/scsi_lib.c')
-rw-r--r--drivers/scsi/scsi_lib.c14
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 2afb96b801cb..4e15a3a5ad29 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -1068,13 +1068,6 @@ int scsi_setup_blk_pc_cmnd(struct scsi_device *sdev, struct request *req)
}
cmd->cmd_len = req->cmd_len;
- if (!blk_rq_bytes(req))
- cmd->sc_data_direction = DMA_NONE;
- else if (rq_data_dir(req) == WRITE)
- cmd->sc_data_direction = DMA_TO_DEVICE;
- else
- cmd->sc_data_direction = DMA_FROM_DEVICE;
-
cmd->transfersize = blk_rq_bytes(req);
cmd->allowed = req->retries;
return BLKPREP_OK;
@@ -1203,6 +1196,13 @@ static int scsi_prep_fn(struct request_queue *q, struct request *req)
goto out;
}
+ if (!blk_rq_bytes(req))
+ cmd->sc_data_direction = DMA_NONE;
+ else if (rq_data_dir(req) == WRITE)
+ cmd->sc_data_direction = DMA_TO_DEVICE;
+ else
+ cmd->sc_data_direction = DMA_FROM_DEVICE;
+
switch (req->cmd_type) {
case REQ_TYPE_FS:
ret = scsi_setup_fs_cmnd(sdev, req);