[PATCH 1/4] mvsas: bugfix for NULL pointer execption

[Ying Chu <jasonchu@marvell.com>]

>From 347191384292c6e9a9a572c657049bc11615fb82 Mon Sep 17 00:00:00 2001
From: Andy <ayan@marvell.com>
Date: Mon, 4 May 2009 23:29:26 +0800
Subject: [PATCH 1/4] mvsas: bug fix, null pointer may be used

Null pointer exception when mvi_dev is null.

Signed-off-by: Ying Chu <jasonchu@marvell.com>
Signed-off-by: Andy Yan <ayan@marvell.com>
Signed-off-by: Ke Wei <kewei@marvell.com>
---
 drivers/scsi/mvsas/mv_sas.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/scsi/mvsas/mv_sas.c b/drivers/scsi/mvsas/mv_sas.c
index d79ac17..318ec01 100644
--- a/drivers/scsi/mvsas/mv_sas.c
+++ b/drivers/scsi/mvsas/mv_sas.c
@@ -1873,11 +1873,11 @@ int mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc, u32 flags)
 	}
 
 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;
 
-- 
1.6.0.3

-- 
Regards,
Ying Chu