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 <[email protected]> Signed-off-by: Ping-Ke Shih <[email protected]> Signed-off-by: Kalle Valo <[email protected]> Link: https://lore.kernel.org/r/[email protected]
josf · Aug 10, 2022 · 9a72db4 · 9a72db4
1 parent 2eee3db
commit 9a72db4
Showing 1 changed file with 2 additions and 0 deletions.
diff --git 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;
 }