remove device driver failed to check map error messages
Reported-by: Johnny Bieren <jbie...@redhat.com>
Tested-by: Johnny Bieren <jbie...@redhat.com>
Reviewed-by: Scott Teel <scott.t...@microsemi.com>
Signed-off-by: Don Brace <don.br...@microsemi.com>
---
drivers/block/cciss.c | 32 ++++++++++++++++++++++++++++----
1 file changed, 28 insertions(+), 4 deletions(-)
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index 3a44438..9c0a34b 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -347,7 +347,7 @@ 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;
@@ -358,8 +358,16 @@ 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 */
@@ -3370,15 +3378,31 @@ 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)
