scsi: pm80xx: Corrected dma_unmap_sg() parameter

[ Upstream commit 76cb25b058034d37244be6aca97a2ad52a5fbcad ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/scsi/pm8001/pm8001_sas.c b/drivers/scsi/pm8001/pm8001_sas.c
index ce584c31d36e505a005b2e09aab8ccbaa6e4025c..d1fcd21f7f7ddf4b01070573fe2e722669ea2425 100644 (file)
--- a/drivers/scsi/pm8001/pm8001_sas.c
+++ b/drivers/scsi/pm8001/pm8001_sas.c
@@ -466,7 +466,7 @@ err_out:
        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);