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scsi: aic94xx: Add missing check for dma_map_single() 

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>
This commit is contained in:
Jiasheng Jiang 2023-01-28 19:08:32 +08:00 committed by Martin K. Petersen
parent ead821268c
commit 32fe45274e
1 changed files with 3 additions and 0 deletions
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drivers/scsi/aic94xx/aic94xx_task.c
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@ -50,6 +50,9 @@ static int asd_map_scatterlist(struct sas_task *task,
dma_addr_t dma = dma_map_single(&asd_ha->pcidev->dev, p,
task->total_xfer_len,
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].size = cpu_to_le32(task->total_xfer_len);
sg_arr[0].flags |= ASD_SG_EL_LIST_EOL;