Replaced null test on dma handle with pci_dma_mapping_error()
o check for mapping errors. Coccinelle was used to find cases
that do not check for dma mapping errors:
@rule1@
statement S;
identifier x;
@@
*x = pci_map_single(...);
if (!x) S
Signed-off-by: Tina Johnson <tinajohnson.1...@gmail.com>
Acked-by: Julia Lawall <julia.law...@lip6.fr>
---
drivers/scsi/mpt2sas/mpt2sas_transport.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/mpt2sas/mpt2sas_transport.c
b/drivers/scsi/mpt2sas/mpt2sas_transport.c
index e689bf2..b283140 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_transport.c
+++ b/drivers/scsi/mpt2sas/mpt2sas_transport.c
@@ -1962,7 +1962,7 @@ _transport_smp_handler(struct Scsi_Host *shost, struct
sas_rphy *rphy,
} else {
dma_addr_out = pci_map_single(ioc->pdev, bio_data(req->bio),
blk_rq_bytes(req), PCI_DMA_BIDIRECTIONAL);
- if (!dma_addr_out) {
+ if (pci_dma_mapping_error(ioc->pdev, dma_addr_out)) {
printk(MPT2SAS_INFO_FMT "%s(): DMA Addr out = NULL\n",
ioc->name, __func__);
rc = -ENOMEM;
@@ -1984,7 +1984,7 @@ _transport_smp_handler(struct Scsi_Host *shost, struct
sas_rphy *rphy,
} else {
dma_addr_in = pci_map_single(ioc->pdev, bio_data(rsp->bio),
blk_rq_bytes(rsp), PCI_DMA_BIDIRECTIONAL);
- if (!dma_addr_in) {
+ if (pci_dma_mapping_error(ioc->pdev, dma_addr_in)) {
printk(MPT2SAS_INFO_FMT "%s(): DMA Addr in = NULL\n",
ioc->name, __func__);
rc = -ENOMEM;
--
1.7.10.4
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
