From 030aaeddbab161403aa4e4f34b84971bb5db7a9f 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
Git-commit: 030aaeddbab161403aa4e4f34b84971bb5db7a9f
Patch-mainline: v5.9-rc1
References: jsc#SLE-13430
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>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/net/wireless/mediatek/mt76/mt7615/init.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/init.c b/drivers/net/wireless/mediatek/mt76/mt7615/init.c
index 5bb87dd21279..fdc40a1c84c4 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/init.c
@@ -285,7 +285,9 @@ 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
--
2.16.4