From 9a72db41338564040b6469342cfddd46568c7380 Mon Sep 17 00:00:00 2001 From: Chih-Kang Chang Date: Tue, 9 Aug 2022 16:41:01 +0800 Subject: [PATCH] wifi: rtw88: add mutex when set SAR Applying SAR will access hal data, it should hold rtwdev::mutex to avoid hal data changed during setting flow. Signed-off-by: Chih-Kang Chang Signed-off-by: Ping-Ke Shih Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20220809084107.38137-2-pkshih@realtek.com --- drivers/net/wireless/realtek/rtw88/mac80211.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/wireless/realtek/rtw88/mac80211.c b/drivers/net/wireless/realtek/rtw88/mac80211.c index b6af199ae5e1..fa6a920fa805 100644 --- a/drivers/net/wireless/realtek/rtw88/mac80211.c +++ b/drivers/net/wireless/realtek/rtw88/mac80211.c @@ -875,7 +875,9 @@ static int rtw_ops_set_sar_specs(struct ieee80211_hw *hw, { struct rtw_dev *rtwdev = hw->priv; + mutex_lock(&rtwdev->mutex); rtw_set_sar_specs(rtwdev, sar); + mutex_unlock(&rtwdev->mutex); return 0; } -- 2.11.0