mpt3sas: Call dma_mapping_error() API after mapping an address with dma_map_single...

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>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
(cherry picked from commit 36814028ad720165a6febcf9ddd7de20833fd240)
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/mpt3sas/mpt3sas_transport.c b/drivers/scsi/mpt3sas/mpt3sas_transport.c
index 7a7aa68a3f5f5d5ac67f6c6f0397227199b79358..70fd019e7ee585c14deea0e4ec1ffcff66709f8e 100644 (file)
--- 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;