From 7534230b07cffa1cd74153a344090c1892fcebdc Mon Sep 17 00:00:00 2001
From: Adam Kwolek <adam.kwolek@intel.com>
Date: Tue, 14 Jun 2011 12:48:58 +1000
Subject: [PATCH] imsm: FIX: klocwork: passed dev pointer to is_gen_migration()
 can be NULL

Pointer dev2 passed in write_super_imsm():4451 can be equal to NULL.

Signed-off-by: Adam Kwolek <adam.kwolek@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
---
 super-intel.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/super-intel.c b/super-intel.c
index 6c74e50..5dc8ca8 100644
--- a/super-intel.c
+++ b/super-intel.c
@@ -5312,6 +5312,9 @@ static int update_subarray_imsm(struct supertype *st, char *subarray,
 
 static int is_gen_migration(struct imsm_dev *dev)
 {
+	if (dev == NULL)
+		return 0;
+
 	if (!dev->vol.migr_state)
 		return 0;