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Diffstat (limited to 'drivers/scsi/aic94xx/aic94xx_task.c')
-rw-r--r--drivers/scsi/aic94xx/aic94xx_task.c19
1 files changed, 13 insertions, 6 deletions
diff --git a/drivers/scsi/aic94xx/aic94xx_task.c b/drivers/scsi/aic94xx/aic94xx_task.c
index 9b65abec2f6e..6c12c0f19f39 100644
--- a/drivers/scsi/aic94xx/aic94xx_task.c
+++ b/drivers/scsi/aic94xx/aic94xx_task.c
@@ -74,8 +74,13 @@ static inline int asd_map_scatterlist(struct sas_task *task,
return 0;
}
- num_sg = pci_map_sg(asd_ha->pcidev, task->scatter, task->num_scatter,
- task->data_dir);
+ /* STP tasks come from libata which has already mapped
+ * the SG list */
+ if (task->task_proto == SAS_PROTOCOL_STP)
+ num_sg = task->num_scatter;
+ else
+ num_sg = pci_map_sg(asd_ha->pcidev, task->scatter,
+ task->num_scatter, task->data_dir);
if (num_sg == 0)
return -ENOMEM;
@@ -120,8 +125,9 @@ static inline int asd_map_scatterlist(struct sas_task *task,
return 0;
err_unmap:
- pci_unmap_sg(asd_ha->pcidev, task->scatter, task->num_scatter,
- task->data_dir);
+ if (task->task_proto != SAS_PROTOCOL_STP)
+ pci_unmap_sg(asd_ha->pcidev, task->scatter, task->num_scatter,
+ task->data_dir);
return res;
}
@@ -142,8 +148,9 @@ static inline void asd_unmap_scatterlist(struct asd_ascb *ascb)
}
asd_free_coherent(asd_ha, ascb->sg_arr);
- pci_unmap_sg(asd_ha->pcidev, task->scatter, task->num_scatter,
- task->data_dir);
+ if (task->task_proto != SAS_PROTOCOL_STP)
+ pci_unmap_sg(asd_ha->pcidev, task->scatter, task->num_scatter,
+ task->data_dir);
}
/* ---------- Task complete tasklet ---------- */