[PATCH 18/20] [SCSI] mpt3sas: Call dma_mapping_error() API after mapping an address with dma_map_single() API

Sreekanth Reddy
2015-06-12T09:44:27Z

Added dma_mapping_error() API after mapping an address with dma_map_single() API.
Otherwise when CONFIG_DMA_API_DEBUG is enabled in the kernel, then it complains
about mpt3sas driver not calling dma_mapping_error after mapping an address with
dma_map_single

Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@avagotech.com>
---
drivers/scsi/mpt3sas/mpt3sas_transport.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/mpt3sas/mpt3sas_transport.c b/drivers/scsi/mpt3sas/mpt3sas_transport.c
index 7a7aa68..70fd019 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_transport.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_transport.c
@@ -1964,7 +1964,7 @@ _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)) {
pr_info(MPT3SAS_FMT "%s(): DMA Addr out = NULL\n",
ioc->name, __func__);
rc = -ENOMEM;
@@ -1986,7 +1986,7 @@ _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)) {
pr_info(MPT3SAS_FMT "%s(): DMA Addr in = NULL\n",
ioc->name, __func__);
rc = -ENOMEM;
--
2.0.2