Messages in this thread Patch in this message | | | From | Alexey Khoroshilov <> | Subject | [PATCH] mptsas: fix checks for dma mapping errors | Date | Sat, 16 Apr 2016 02:12:29 +0300 |
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mptsas_smp_handler() checks for dma mapping errors by comparison returned address with zero, while pci_dma_mapping_error() should be used.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> --- drivers/message/fusion/mptsas.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c index 7ebccfa8072a..7ee1667acde4 100644 --- a/drivers/message/fusion/mptsas.c +++ b/drivers/message/fusion/mptsas.c @@ -2281,7 +2281,7 @@ static int mptsas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, dma_addr_out = pci_map_single(ioc->pcidev, bio_data(req->bio), blk_rq_bytes(req), PCI_DMA_BIDIRECTIONAL); - if (!dma_addr_out) + if (pci_dma_mapping_error(ioc->pcidev, dma_addr_out)) goto put_mf; ioc->add_sge(psge, flagsLength, dma_addr_out); psge += ioc->SGE_size; @@ -2296,7 +2296,7 @@ static int mptsas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, flagsLength |= blk_rq_bytes(rsp) + 4; dma_addr_in = pci_map_single(ioc->pcidev, bio_data(rsp->bio), blk_rq_bytes(rsp), PCI_DMA_BIDIRECTIONAL); - if (!dma_addr_in) + if (pci_dma_mapping_error(ioc->pcidev, dma_addr_in)) goto unmap; ioc->add_sge(psge, flagsLength, dma_addr_in); -- 1.9.1
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