From 930a021f2ec59d2143ca86a357773128785ed16f Mon Sep 17 00:00:00 2001
From: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Date: Fri, 7 Nov 2014 17:48:35 +0530
Subject: [PATCH] staging: unisys: dereferencing NULL pointer

we can reach the label Away in total five situation and in four of
of them pDevInfo is NULL. so we were basically dereferencing a NULL
pointer.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/staging/unisys/visorchipset/visorchipset_main.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/unisys/visorchipset/visorchipset_main.c b/drivers/staging/unisys/visorchipset/visorchipset_main.c
index b5a0e460da07..c8f7beaac87a 100644
--- a/drivers/staging/unisys/visorchipset/visorchipset_main.c
+++ b/drivers/staging/unisys/visorchipset/visorchipset_main.c
@@ -1298,7 +1298,8 @@ my_device_create(struct controlvm_message *inmsg)
 			 POSTCODE_SEVERITY_INFO);
 Away:
 	/* get the bus and devNo for DiagPool channel */
-	if (is_diagpool_channel(pDevInfo->chan_info.channel_type_uuid)) {
+	if (pDevInfo &&
+	    is_diagpool_channel(pDevInfo->chan_info.channel_type_uuid)) {
 		g_diagpoolBusNo = busNo;
 		g_diagpoolDevNo = devNo;
 		LOGINF("CONTROLVM_DEVICE_CREATE for DiagPool channel: busNo=%lu, devNo=%lu",
-- 
2.20.1