+cc Jack Wang <xjtuwjp@xxxxxxxxx>
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_wang@xxxxxxxxx>
Cc: lindar_liu@xxxxxxxxx
Fixes: dbf9bfe6("[SCSI]pm8001: add SAS/SATA/HBA driver")
Signed-off-by: Xiang Chen <chenxiang66@xxxxxxxxxxxxx>
---
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);
