From dd270b09a7358506169f08c1b0cb72284e127060 Mon Sep 17 00:00:00 2001
From: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Date: Fri, 15 Dec 2017 15:30:05 +0100
Subject: [PATCH] mt7603: mcu: fix potential NULL pointer dereferencing on
 failed allocation

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
---
 mt7603_mcu.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/mt7603_mcu.c b/mt7603_mcu.c
index d96f8706..be49e02a 100644
--- a/mt7603_mcu.c
+++ b/mt7603_mcu.c
@@ -33,6 +33,9 @@ static struct sk_buff *mt7603_mcu_msg_alloc(const void *data, int len)
 
 	skb = alloc_skb(len + sizeof(struct mt7603_mcu_txd),
 			GFP_KERNEL);
+	if (!skb)
+		return NULL;
+
 	skb_reserve(skb, sizeof(struct mt7603_mcu_txd));
 	if (data && len)
 		memcpy(skb_put(skb, len), data, len);