From: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Date: Sat, 28 Jan 2023 19:08:32 +0800
Subject: scsi: aic94xx: Add missing check for dma_map_single()
Git-commit: 32fe45274edb5926abc0fac7263d9f889d02d9cf
Patch-mainline: v6.3-rc1
References: git-fixes
Add check for dma_map_single() and return error if it fails in order to
avoid invalid DMA address.
[lduncan: refreshed to apply]
Fixes: 2908d778ab3e ("[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>
Acked-by: Lee Duncan <lduncan@suse.com>
---
drivers/scsi/aic94xx/aic94xx_task.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/scsi/aic94xx/aic94xx_task.c
+++ b/drivers/scsi/aic94xx/aic94xx_task.c
@@ -68,6 +68,9 @@ static int asd_map_scatterlist(struct sa
dma_addr_t dma = pci_map_single(asd_ha->pcidev, 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;