diff options
| author | Don Brace <don.brace@microsemi.com> | 2017-02-23 17:57:20 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-02-24 01:10:32 +0300 |
| commit | ebe73647fb3895b75544cecdb6766a517fbf03d6 (patch) | |
| tree | 1501a6a1beda1ceba839c2f1aabd624d386000f3 | |
| parent | 669a311b6ecc4eeb367a269bdd5f4e143caddb9c (diff) | |
| download | linux-ebe73647fb3895b75544cecdb6766a517fbf03d6.tar.xz | |
scsi: cciss: correct check map error.
Remove device driver failed to check map error messages
Reported-by: Johnny Bieren <jbieren@redhat.com>
Tested-by: Johnny Bieren <jbieren@redhat.com>
Reviewed-by: Scott Teel <scott.teel@microsemi.com>
Signed-off-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| -rw-r--r-- | drivers/block/cciss.c | 32 |
1 files changed, 28 insertions, 4 deletions
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index 27d613795653..8e1a4554951c 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -348,7 +348,7 @@ static void cciss_unmap_sg_chain_block(ctlr_info_t *h, CommandList_struct *c) pci_unmap_single(h->pdev, temp64.val, chain_sg->Len, PCI_DMA_TODEVICE); } -static void cciss_map_sg_chain_block(ctlr_info_t *h, CommandList_struct *c, +static int cciss_map_sg_chain_block(ctlr_info_t *h, CommandList_struct *c, SGDescriptor_struct *chain_block, int len) { SGDescriptor_struct *chain_sg; @@ -359,8 +359,16 @@ static void cciss_map_sg_chain_block(ctlr_info_t *h, CommandList_struct *c, chain_sg->Len = len; temp64.val = pci_map_single(h->pdev, chain_block, len, PCI_DMA_TODEVICE); + if (dma_mapping_error(&h->pdev->dev, temp64.val)) { + dev_warn(&h->pdev->dev, + "%s: error mapping chain block for DMA\n", + __func__); + return -1; + } chain_sg->Addr.lower = temp64.val32.lower; chain_sg->Addr.upper = temp64.val32.upper; + + return 0; } #include "cciss_scsi.c" /* For SCSI tape support */ @@ -3369,15 +3377,31 @@ static void do_cciss_request(struct request_queue *q) temp64.val = (__u64) pci_map_page(h->pdev, sg_page(&tmp_sg[i]), tmp_sg[i].offset, tmp_sg[i].length, dir); + if (dma_mapping_error(&h->pdev->dev, temp64.val)) { + dev_warn(&h->pdev->dev, + "%s: error mapping page for DMA\n", __func__); + creq->errors = make_status_bytes(SAM_STAT_GOOD, + 0, DRIVER_OK, + DID_SOFT_ERROR); + cmd_free(h, c); + return; + } curr_sg[sg_index].Addr.lower = temp64.val32.lower; curr_sg[sg_index].Addr.upper = temp64.val32.upper; curr_sg[sg_index].Ext = 0; /* we are not chaining */ ++sg_index; } - if (chained) - cciss_map_sg_chain_block(h, c, h->cmd_sg_list[c->cmdindex], + if (chained) { + if (cciss_map_sg_chain_block(h, c, h->cmd_sg_list[c->cmdindex], (seg - (h->max_cmd_sgentries - 1)) * - sizeof(SGDescriptor_struct)); + sizeof(SGDescriptor_struct))) { + creq->errors = make_status_bytes(SAM_STAT_GOOD, + 0, DRIVER_OK, + DID_SOFT_ERROR); + cmd_free(h, c); + return; + } + } /* track how many SG entries we are using */ if (seg > h->maxSG) |