From dc1e4730e2b636065628f8427b675788bca83d34 Mon Sep 17 00:00:00 2001 From: Xiang Chen Date: Sat, 9 Dec 2017 01:16:33 +0800 Subject: [PATCH] scsi: hisi_sas: fix dma_unmap_sg() parameter For function dma_unmap_sg(), the parameter should be number of elements in the scatterlist prior to the mapping, not after the mapping. Fix this usage. Signed-off-by: Xiang Chen Signed-off-by: John Garry Signed-off-by: Martin K. Petersen --- drivers/scsi/hisi_sas/hisi_sas_main.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c index 359ec52fc2fb..d8425303eadd 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_main.c +++ b/drivers/scsi/hisi_sas/hisi_sas_main.c @@ -192,7 +192,8 @@ void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba, struct sas_task *task, if (!sas_protocol_ata(task->task_proto)) if (slot->n_elem) - dma_unmap_sg(dev, task->scatter, slot->n_elem, + dma_unmap_sg(dev, task->scatter, + task->num_scatter, task->data_dir); if (sas_dev) @@ -431,7 +432,8 @@ err_out: dev_err(dev, "task prep: failed[%d]!\n", rc); if (!sas_protocol_ata(task->task_proto)) if (n_elem) - dma_unmap_sg(dev, task->scatter, n_elem, + dma_unmap_sg(dev, task->scatter, + task->num_scatter, task->data_dir); prep_out: return rc;