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authorLinus Torvalds <torvalds@linux-foundation.org>2017-03-03 21:36:56 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-03-03 21:36:56 -0800
commita3b4924b027f9a4b95ce89a914c1e0459e76f18a (patch)
tree49f77a75c4fb2698f1251e42e7e893ed366f3abe /drivers/block
parent0b94da8dfc26ec2eb3e6640726e434abf8c53e49 (diff)
parent42a70abddd90374518057e989f5b7289b7b535d8 (diff)
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull more SCSI updates from James Bottomley: "This is the set of stuff that didn't quite make the initial pull and a set of fixes for stuff which did. The new stuff is basically lpfc (nvme), qedi and aacraid. The fixes cover a lot of previously submitted stuff, the most important of which probably covers some of the failing irq vectors allocation and other fallout from having the SCSI command allocated as part of the block allocation functions" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (59 commits) scsi: qedi: Fix memory leak in tmf response processing. scsi: aacraid: remove redundant zero check on ret scsi: lpfc: use proper format string for dma_addr_t scsi: lpfc: use div_u64 for 64-bit division scsi: mac_scsi: Fix MAC_SCSI=m option when SCSI=m scsi: cciss: correct check map error. scsi: qla2xxx: fix spelling mistake: "seperator" -> "separator" scsi: aacraid: Fixed expander hotplug for SMART family scsi: mpt3sas: switch to pci_alloc_irq_vectors scsi: qedf: fixup compilation warning about atomic_t usage scsi: remove scsi_execute_req_flags scsi: merge __scsi_execute into scsi_execute scsi: simplify scsi_execute_req_flags scsi: make the sense header argument to scsi_test_unit_ready mandatory scsi: sd: improve TUR handling in sd_check_events scsi: always zero sshdr in scsi_normalize_sense scsi: scsi_dh_emc: return success in clariion_std_inquiry() scsi: fix memory leak of sdpk on when gd fails to allocate scsi: sd: make sd_devt_release() static scsi: qedf: Add QLogic FastLinQ offload FCoE driver framework. ...
Diffstat (limited to 'drivers/block')
-rw-r--r--drivers/block/cciss.c32
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)