+cc Jack Wang <xjtu...@gmail.com> 在 2018/1/4 10:36, chenxiang 写道:
For function dma_unmap_sg(), the <nents> parameter should be number of elements in the scatterlist prior to the mapping, not after the mapping. Fix this usage.Cc: Jack Wang <jack_w...@usish.com> Cc: lindar_...@usish.com Fixes: dbf9bfe6("[SCSI]pm8001: add SAS/SATA/HBA driver") Signed-off-by: Xiang Chen <chenxian...@hisilicon.com> --- drivers/scsi/pm8001/pm8001_sas.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/pm8001/pm8001_sas.c b/drivers/scsi/pm8001/pm8001_sas.c index 947d601..576a0f0 100644 --- a/drivers/scsi/pm8001/pm8001_sas.c +++ b/drivers/scsi/pm8001/pm8001_sas.c @@ -466,7 +466,7 @@ static int pm8001_task_exec(struct sas_task *task, dev_printk(KERN_ERR, pm8001_ha->dev, "pm8001 exec failed[%d]!\n", rc); if (!sas_protocol_ata(t->task_proto)) if (n_elem) - dma_unmap_sg(pm8001_ha->dev, t->scatter, n_elem, + dma_unmap_sg(pm8001_ha->dev, t->scatter, t->num_scatter, t->data_dir); out_done: spin_unlock_irqrestore(&pm8001_ha->lock, flags);
