From bf6a341e9a41c8383f7e0abdcb01a1a7d13bcdad Mon Sep 17 00:00:00 2001
From: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Date: Thu, 14 Dec 2017 09:54:22 +0100
Subject: [PATCH] mt76x2: mac: fix possible NULL pointer dereferencing in
 mt76x2_mac_write_txwi()

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
---
 mt76x2_mac.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mt76x2_mac.c b/mt76x2_mac.c
index 6efeec66..073d823a 100644
--- a/mt76x2_mac.c
+++ b/mt76x2_mac.c
@@ -202,7 +202,7 @@ void mt76x2_mac_write_txwi(struct mt76x2_dev *dev, struct mt76x2_txwi *txwi,
 	}
 
 	spin_lock_bh(&dev->mt76.lock);
-	if (rate->idx < 0 || !rate->count) {
+	if (wcid && (rate->idx < 0 || !rate->count)) {
 		txwi->rate = wcid->tx_rate;
 		max_txpwr_adj = wcid->max_txpwr_adj;
 		nss = wcid->tx_rate_nss;