scsi: mvsas: Fix dma_unmap_sg() nents value

[ Upstream commit 0141618727bc929fe868153d21797f10ce5bef3f ]

The dma_unmap_sg() functions should be called with the same nents as the
dma_map_sg(), not the value the map function returned.

Fixes: b5762948263d ("[SCSI] mvsas: Add Marvell 6440 SAS/SATA driver")
Signed-off-by: Thomas Fourier <fourier.thomas@gmail.com>
Link: https://lore.kernel.org/r/20250627134822.234813-2-fourier.thomas@gmail.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/scsi/mvsas/mv_sas.c b/drivers/scsi/mvsas/mv_sas.c
index a2a13969c686e603ba78511c4d16acf2fda9c50f..239b81ab924f70e03153f8b8280a6b516f5b6dc3 100644 (file)
--- a/drivers/scsi/mvsas/mv_sas.c
+++ b/drivers/scsi/mvsas/mv_sas.c
@@ -829,7 +829,7 @@ err_out:
        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;
@@ -880,7 +880,7 @@ 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: