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Commit 904b717b authored by Jiasheng Jiang's avatar Jiasheng Jiang Committed by Greg Kroah-Hartman
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scsi: aic94xx: Add missing check for dma_map_single() 

[ Upstream commit 32fe45274edb5926abc0fac7263d9f889d02d9cf ]

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

Fixes: 2908d778 ("[SCSI] aic94xx: new driver")
Link: https://lore.kernel.org/r/20230128110832.6792-1-jiasheng@iscas.ac.cn


Signed-off-by: default avatarJiasheng Jiang <jiasheng@iscas.ac.cn>
Reviewed-by: default avatarJason Yan <yanaijie@huawei.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 3414be1c

drivers/scsi/aic94xx/aic94xx_task.c

+3 −0
Original line number Diff line number Diff line
@@ -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;