diff options
| -rw-r--r-- | drivers/scsi/libata-core.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c index ee9b96da841e..63d3f70d06e1 100644 --- a/drivers/scsi/libata-core.c +++ b/drivers/scsi/libata-core.c | |||
| @@ -2071,7 +2071,7 @@ void ata_sg_init_one(struct ata_queued_cmd *qc, void *buf, unsigned int buflen) | |||
| 2071 | sg = qc->sg; | 2071 | sg = qc->sg; |
| 2072 | sg->page = virt_to_page(buf); | 2072 | sg->page = virt_to_page(buf); |
| 2073 | sg->offset = (unsigned long) buf & ~PAGE_MASK; | 2073 | sg->offset = (unsigned long) buf & ~PAGE_MASK; |
| 2074 | sg_dma_len(sg) = buflen; | 2074 | sg->length = buflen; |
| 2075 | } | 2075 | } |
| 2076 | 2076 | ||
| 2077 | void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, | 2077 | void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg, |
| @@ -2101,11 +2101,12 @@ static int ata_sg_setup_one(struct ata_queued_cmd *qc) | |||
| 2101 | dma_addr_t dma_address; | 2101 | dma_addr_t dma_address; |
| 2102 | 2102 | ||
| 2103 | dma_address = dma_map_single(ap->host_set->dev, qc->buf_virt, | 2103 | dma_address = dma_map_single(ap->host_set->dev, qc->buf_virt, |
| 2104 | sg_dma_len(sg), dir); | 2104 | sg->length, dir); |
| 2105 | if (dma_mapping_error(dma_address)) | 2105 | if (dma_mapping_error(dma_address)) |
| 2106 | return -1; | 2106 | return -1; |
| 2107 | 2107 | ||
| 2108 | sg_dma_address(sg) = dma_address; | 2108 | sg_dma_address(sg) = dma_address; |
| 2109 | sg_dma_len(sg) = sg->length; | ||
| 2109 | 2110 | ||
| 2110 | DPRINTK("mapped buffer of %d bytes for %s\n", sg_dma_len(sg), | 2111 | DPRINTK("mapped buffer of %d bytes for %s\n", sg_dma_len(sg), |
| 2111 | qc->tf.flags & ATA_TFLAG_WRITE ? "write" : "read"); | 2112 | qc->tf.flags & ATA_TFLAG_WRITE ? "write" : "read"); |
| @@ -2310,7 +2311,7 @@ static void ata_pio_sector(struct ata_queued_cmd *qc) | |||
| 2310 | qc->cursect++; | 2311 | qc->cursect++; |
| 2311 | qc->cursg_ofs++; | 2312 | qc->cursg_ofs++; |
| 2312 | 2313 | ||
| 2313 | if ((qc->cursg_ofs * ATA_SECT_SIZE) == sg_dma_len(&sg[qc->cursg])) { | 2314 | if ((qc->cursg_ofs * ATA_SECT_SIZE) == (&sg[qc->cursg])->length) { |
| 2314 | qc->cursg++; | 2315 | qc->cursg++; |
| 2315 | qc->cursg_ofs = 0; | 2316 | qc->cursg_ofs = 0; |
| 2316 | } | 2317 | } |
| @@ -2347,7 +2348,7 @@ next_page: | |||
| 2347 | page = nth_page(page, (offset >> PAGE_SHIFT)); | 2348 | page = nth_page(page, (offset >> PAGE_SHIFT)); |
| 2348 | offset %= PAGE_SIZE; | 2349 | offset %= PAGE_SIZE; |
| 2349 | 2350 | ||
| 2350 | count = min(sg_dma_len(sg) - qc->cursg_ofs, bytes); | 2351 | count = min(sg->length - qc->cursg_ofs, bytes); |
| 2351 | 2352 | ||
| 2352 | /* don't cross page boundaries */ | 2353 | /* don't cross page boundaries */ |
| 2353 | count = min(count, (unsigned int)PAGE_SIZE - offset); | 2354 | count = min(count, (unsigned int)PAGE_SIZE - offset); |
| @@ -2358,7 +2359,7 @@ next_page: | |||
| 2358 | qc->curbytes += count; | 2359 | qc->curbytes += count; |
| 2359 | qc->cursg_ofs += count; | 2360 | qc->cursg_ofs += count; |
| 2360 | 2361 | ||
| 2361 | if (qc->cursg_ofs == sg_dma_len(sg)) { | 2362 | if (qc->cursg_ofs == sg->length) { |
| 2362 | qc->cursg++; | 2363 | qc->cursg++; |
| 2363 | qc->cursg_ofs = 0; | 2364 | qc->cursg_ofs = 0; |
| 2364 | } | 2365 | } |
| @@ -2371,7 +2372,7 @@ next_page: | |||
| 2371 | kunmap(page); | 2372 | kunmap(page); |
| 2372 | 2373 | ||
| 2373 | if (bytes) { | 2374 | if (bytes) { |
| 2374 | if (qc->cursg_ofs < sg_dma_len(sg)) | 2375 | if (qc->cursg_ofs < sg->length) |
| 2375 | goto next_page; | 2376 | goto next_page; |
| 2376 | goto next_sg; | 2377 | goto next_sg; |
| 2377 | } | 2378 | } |
