[SCSI] mvsas: bug fix, null pointer may be used
Null pointer check to avoid corruption.
Signed-off-by: Ying Chu <jasonchu@marvell.com>
Signed-off-by: Andy Yan <ayan@marvell.com>
Signed-off-by: Ke Wei <kewei@marvell.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/drivers/scsi/mvsas/mv_sas.c b/drivers/scsi/mvsas/mv_sas.c
index 4279b5e..3fc396f 100644
--- a/drivers/scsi/mvsas/mv_sas.c
+++ b/drivers/scsi/mvsas/mv_sas.c
@@ -1873,11 +1873,11 @@
}
out:
- if (mvi_dev)
+ if (mvi_dev) {
mvi_dev->runing_req--;
- if (sas_protocol_ata(task->task_proto))
- mvs_free_reg_set(mvi, mvi_dev);
-
+ if (sas_protocol_ata(task->task_proto))
+ mvs_free_reg_set(mvi, mvi_dev);
+ }
mvs_slot_task_free(mvi, task, slot, slot_idx);
sts = tstat->stat;
