diff options
| -rw-r--r-- | drivers/scsi/eata.c | 48 |
1 files changed, 14 insertions, 34 deletions
diff --git a/drivers/scsi/eata.c b/drivers/scsi/eata.c index 2d38025861a5..a83e9f150b97 100644 --- a/drivers/scsi/eata.c +++ b/drivers/scsi/eata.c @@ -1609,8 +1609,9 @@ static int eata2x_detect(struct scsi_host_template *tpnt) static void map_dma(unsigned int i, struct hostdata *ha) { - unsigned int k, count, pci_dir; - struct scatterlist *sgpnt; + unsigned int k, pci_dir; + int count; + struct scatterlist *sg; struct mscp *cpp; struct scsi_cmnd *SCpnt; @@ -1625,38 +1626,19 @@ static void map_dma(unsigned int i, struct hostdata *ha) cpp->sense_len = sizeof SCpnt->sense_buffer; - if (!SCpnt->use_sg) { - - /* If we get here with PCI_DMA_NONE, pci_map_single triggers a BUG() */ - if (!SCpnt->request_bufflen) - pci_dir = PCI_DMA_BIDIRECTIONAL; - - if (SCpnt->request_buffer) - cpp->data_address = H2DEV(pci_map_single(ha->pdev, - SCpnt-> - request_buffer, - SCpnt-> - request_bufflen, - pci_dir)); - - cpp->data_len = H2DEV(SCpnt->request_bufflen); - return; - } - - sgpnt = (struct scatterlist *)SCpnt->request_buffer; - count = pci_map_sg(ha->pdev, sgpnt, SCpnt->use_sg, pci_dir); - - for (k = 0; k < count; k++) { - cpp->sglist[k].address = H2DEV(sg_dma_address(&sgpnt[k])); - cpp->sglist[k].num_bytes = H2DEV(sg_dma_len(&sgpnt[k])); + count = scsi_dma_map(SCpnt); + BUG_ON(count < 0); + scsi_for_each_sg(SCpnt, sg, count, k) { + cpp->sglist[k].address = H2DEV(sg_dma_address(sg)); + cpp->sglist[k].num_bytes = H2DEV(sg_dma_len(sg)); } cpp->sg = 1; cpp->data_address = H2DEV(pci_map_single(ha->pdev, cpp->sglist, - SCpnt->use_sg * + scsi_sg_count(SCpnt) * sizeof(struct sg_list), pci_dir)); - cpp->data_len = H2DEV((SCpnt->use_sg * sizeof(struct sg_list))); + cpp->data_len = H2DEV((scsi_sg_count(SCpnt) * sizeof(struct sg_list))); } static void unmap_dma(unsigned int i, struct hostdata *ha) @@ -1673,9 +1655,7 @@ static void unmap_dma(unsigned int i, struct hostdata *ha) pci_unmap_single(ha->pdev, DEV2H(cpp->sense_addr), DEV2H(cpp->sense_len), PCI_DMA_FROMDEVICE); - if (SCpnt->use_sg) - pci_unmap_sg(ha->pdev, SCpnt->request_buffer, SCpnt->use_sg, - pci_dir); + scsi_dma_unmap(SCpnt); if (!DEV2H(cpp->data_len)) pci_dir = PCI_DMA_BIDIRECTIONAL; @@ -1700,9 +1680,9 @@ static void sync_dma(unsigned int i, struct hostdata *ha) DEV2H(cpp->sense_len), PCI_DMA_FROMDEVICE); - if (SCpnt->use_sg) - pci_dma_sync_sg_for_cpu(ha->pdev, SCpnt->request_buffer, - SCpnt->use_sg, pci_dir); + if (scsi_sg_count(SCpnt)) + pci_dma_sync_sg_for_cpu(ha->pdev, scsi_sglist(SCpnt), + scsi_sg_count(SCpnt), pci_dir); if (!DEV2H(cpp->data_len)) pci_dir = PCI_DMA_BIDIRECTIONAL; |