From: Deepak Ukey <deepak.ukey@microchip.com>
Date: Tue, 11 Sep 2018 14:18:03 +0530
Subject: scsi: pm80xx: Corrected dma_unmap_sg() parameter
Git-commit: 76cb25b058034d37244be6aca97a2ad52a5fbcad
Patch-mainline: v4.20-rc1
References: git-fixes
For the function dma_unmap_sg(), the <nents> parameter should be number of
elements in the scatter list prior to the mapping, not after the mapping.
Signed-off-by: Deepak Ukey <deepak.ukey@microchip.com>
Signed-off-by: Viswas G <Viswas.G@microchip.com>
Acked-by: Jack Wang <jinpu.wang@profitbricks.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Lee Duncan <lduncan@suse.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 d8249675371e..e063faad66f5 100644
--- a/drivers/scsi/pm8001/pm8001_sas.c
+++ b/drivers/scsi/pm8001/pm8001_sas.c
@@ -488,7 +488,7 @@ 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);