[SCSI] qla4xxx: convert to use the data buffer accessors

- remove the unnecessary map_single path.

- convert to use the new accessors for the sg lists and the
parameters.

Jens Axboe <jens.axboe@oracle.com> did the for_each_sg cleanup.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: David C Somayajulu <david.somayajulu@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 1 insertions, 8 deletions

diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
index 0e4688c9e0a2..e09fc4241970 100644
--- a/drivers/scsi/qla4xxx/ql4_os.c
+++ b/drivers/scsi/qla4xxx/ql4_os.c
@@ -373,14 +373,7 @@ static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
         struct scsi_cmnd *cmd = srb->cmd;
 
         if (srb->flags & SRB_DMA_VALID) {
-                if (cmd->use_sg) {
-                        pci_unmap_sg(ha->pdev, cmd->request_buffer,
-                                     cmd->use_sg, cmd->sc_data_direction);
-                } else if (cmd->request_bufflen) {
-                        pci_unmap_single(ha->pdev, srb->dma_handle,
-                                         cmd->request_bufflen,
-                                         cmd->sc_data_direction);
-                }
+                scsi_dma_unmap(cmd);
                 srb->flags &= ~SRB_DMA_VALID;
         }
         cmd->SCp.ptr = NULL;