diff options
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_scsi.c | 11 |
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) | |||
| 332 | * data bde entry. | 332 | * data bde entry. |
| 333 | */ | 333 | */ |
| 334 | bpl += 2; | 334 | bpl += 2; |
| 335 | nseg = scsi_dma_map(scsi_cmnd); | 335 | if (scsi_sg_count(scsi_cmnd)) { |
| 336 | if (nseg > 0) { | ||
| 337 | /* | 336 | /* |
| 338 | * The driver stores the segment count returned from pci_map_sg | 337 | * The driver stores the segment count returned from pci_map_sg |
| 339 | * because this a count of dma-mappings used to map the use_sg | 338 | * 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) | |||
| 341 | * architectures that implement an IOMMU. | 340 | * architectures that implement an IOMMU. |
| 342 | */ | 341 | */ |
| 343 | 342 | ||
| 343 | nseg = dma_map_sg(&phba->pcidev->dev, scsi_sglist(scsi_cmnd), | ||
| 344 | scsi_sg_count(scsi_cmnd), datadir); | ||
| 345 | if (unlikely(!nseg)) | ||
| 346 | return 1; | ||
| 347 | |||
| 344 | lpfc_cmd->seg_cnt = nseg; | 348 | lpfc_cmd->seg_cnt = nseg; |
| 345 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { | 349 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { |
| 346 | printk(KERN_ERR "%s: Too many sg segments from " | 350 | 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) | |||
| 370 | bpl++; | 374 | bpl++; |
| 371 | num_bde++; | 375 | num_bde++; |
| 372 | } | 376 | } |
| 373 | } else if (nseg < 0) | 377 | } |
| 374 | return 1; | ||
| 375 | 378 | ||
| 376 | /* | 379 | /* |
| 377 | * Finish initializing those IOCB fields that are dependent on the | 380 | * Finish initializing those IOCB fields that are dependent on the |
