diff mbox series

[v2,1/7] wifi: rtw88: add mutex when set SAR

Message ID 20220809084107.38137-2-pkshih@realtek.com
State New
Headers show
Series wifi: rtw88: add proper mutex lock to safely access channel | expand

Commit Message

Ping-Ke Shih Aug. 9, 2022, 8:41 a.m. UTC 
From: Chih-Kang Chang <gary.chang@realtek.com>

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>
---
 drivers/net/wireless/realtek/rtw88/mac80211.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

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;
 }