From 2c188db1f7c737979bc23b48d86df992be463f67 Mon Sep 17 00:00:00 2001
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: Fri, 3 Jul 2020 10:15:50 +0200
Subject: [PATCH] mt76: mt7615: add missing lock in mt7615_regd_notifier

Make sure to run mt7615_dfs_init_radar_detector in mt7615_regd_notifier
holding mt76 mutex in order to avoid races and set the device in full
power

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
 mt7615/init.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/mt7615/init.c b/mt7615/init.c
index 2dde54ef..1b760b0b 100644
--- a/mt7615/init.c
+++ b/mt7615/init.c
@@ -300,7 +300,9 @@ mt7615_regd_notifier(struct wiphy *wiphy,
 	if (!(chandef->chan->flags & IEEE80211_CHAN_RADAR))
 		return;
 
+	mt7615_mutex_acquire(dev);
 	mt7615_dfs_init_radar_detector(phy);
+	mt7615_mutex_release(dev);
 }
 
 static void