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: Xiangliang Yu <yuxiangl@xxxxxxxxxxx>
Cc: Jeff Garzik <jgarzik@xxxxxxxxx>
Fixes: 0b15fb1fd("[SCSI]mvsas: add support for Task collector mode and fixed relative
bugs")
Signed-off-by: Xiang Chen <chenxiang66@xxxxxxxxxxxxx>
---
drivers/scsi/mvsas/mv_sas.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/mvsas/mv_sas.c b/drivers/scsi/mvsas/mv_sas.c
index cff43bd..4b2cf36 100644
--- a/drivers/scsi/mvsas/mv_sas.c
+++ b/drivers/scsi/mvsas/mv_sas.c
@@ -848,7 +848,7 @@ static int mvs_task_prep(struct sas_task *task, struct mvs_info *mvi, int is_tmf
dev_printk(KERN_ERR, mvi->dev, "mvsas prep failed[%d]!\n", rc);
if (!sas_protocol_ata(task->task_proto))
if (n_elem)
- dma_unmap_sg(mvi->dev, task->scatter, n_elem,
+ dma_unmap_sg(mvi->dev, task->scatter, task->num_scatter,
task->data_dir);
prep_out:
return rc;
@@ -899,7 +899,7 @@ static void mvs_slot_task_free(struct mvs_info *mvi, struct sas_task *task,
if (!sas_protocol_ata(task->task_proto))
if (slot->n_elem)
dma_unmap_sg(mvi->dev, task->scatter,
- slot->n_elem, task->data_dir);
+ task->num_scatter, task->data_dir);
switch (task->task_proto) {
case SAS_PROTOCOL_SMP:
--
1.9.1
