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scsi: aic94xx: Add missing check for dma_map_single()

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[ Upstream commit 32fe45274edb5926abc0fac7263d9f889d02d9cf ]

Add check for dma_map_single() and return error if it fails in order to
avoid invalid DMA address.

Fixes: 2908d778ab ("[SCSI] aic94xx: new driver")
Link: https://lore.kernel.org/r/20230128110832.6792-1-jiasheng@iscas.ac.cn
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Reviewed-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jiasheng Jiang
2023-01-28 19:08:32 +08:00
committed by Greg Kroah-Hartman
parent a5bf22b1bc
commit fcc68f6223
1 changed files with 3 additions and 0 deletions
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3
drivers/scsi/aic94xx/aic94xx_task.c
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@@ -68,6 +68,9 @@ static int asd_map_scatterlist(struct sas_task *task,
dma_addr_t dma = pci_map_single(asd_ha->pcidev, p, dma_addr_t dma = pci_map_single(asd_ha->pcidev, p,
task->total_xfer_len, task->total_xfer_len,
task->data_dir); task->data_dir);
if (dma_mapping_error(&asd_ha->pcidev->dev, dma))
return -ENOMEM;
sg_arr[0].bus_addr = cpu_to_le64((u64)dma); sg_arr[0].bus_addr = cpu_to_le64((u64)dma);
sg_arr[0].size = cpu_to_le32(task->total_xfer_len); sg_arr[0].size = cpu_to_le32(task->total_xfer_len);
sg_arr[0].flags |= ASD_SG_EL_LIST_EOL; sg_arr[0].flags |= ASD_SG_EL_LIST_EOL;