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-rw-r--r--drivers/scsi/lpfc/lpfc_scsi.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
index 3d35eae01475..8f45bbc42126 100644
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -332,8 +332,7 @@ lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
* data bde entry.
*/
bpl += 2;
- nseg = scsi_dma_map(scsi_cmnd);
- if (nseg > 0) {
+ if (scsi_sg_count(scsi_cmnd)) {
/*
* The driver stores the segment count returned from pci_map_sg
* because this a count of dma-mappings used to map the use_sg
@@ -341,6 +340,11 @@ lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
* architectures that implement an IOMMU.
*/
+ nseg = dma_map_sg(&phba->pcidev->dev, scsi_sglist(scsi_cmnd),
+ scsi_sg_count(scsi_cmnd), datadir);
+ if (unlikely(!nseg))
+ return 1;
+
lpfc_cmd->seg_cnt = nseg;
if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) {
printk(KERN_ERR "%s: Too many sg segments from "
@@ -370,8 +374,7 @@ lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd)
bpl++;
num_bde++;
}
- } else if (nseg < 0)
- return 1;
+ }
/*
* Finish initializing those IOCB fields that are dependent on the