[PATCH 6.0 698/862] rtw89: ser: leave lps with mutex

[Greg Kroah-Hartman]

From: Zong-Zhe Yang <kevin_yang@xxxxxxxxxxx>

[ Upstream commit 8676031bae1c91037d06341214f4150b33707c68 ]

Calling rtw89_leave_lps() should hold rtwdev::mutex.
So, fix it.

Signed-off-by: Zong-Zhe Yang <kevin_yang@xxxxxxxxxxx>
Signed-off-by: Ping-Ke Shih <pkshih@xxxxxxxxxxx>
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220704023453.19935-5-pkshih@xxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/net/wireless/realtek/rtw89/ser.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/wireless/realtek/rtw89/ser.c b/drivers/net/wireless/realtek/rtw89/ser.c
index 726223f25dc6..7240364e8f7d 100644
--- a/drivers/net/wireless/realtek/rtw89/ser.c
+++ b/drivers/net/wireless/realtek/rtw89/ser.c
@@ -152,7 +152,10 @@ static void ser_state_run(struct rtw89_ser *ser, u8 evt)
 	rtw89_debug(rtwdev, RTW89_DBG_SER, "ser: %s receive %s\n",
 		    ser_st_name(ser), ser_ev_name(ser, evt));
 
+	mutex_lock(&rtwdev->mutex);
 	rtw89_leave_lps(rtwdev);
+	mutex_unlock(&rtwdev->mutex);
+
 	ser->st_tbl[ser->state].st_func(ser, evt);
 }
 
-- 
2.35.1