From 9a72db41338564040b6469342cfddd46568c7380 Mon Sep 17 00:00:00 2001
From: Chih-Kang Chang <gary.chang@realtek.com>
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 <gary.chang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
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 b6af199ae5e11..fa6a920fa8054 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;
}
--
2.30.2