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From:   Ping-Ke Shih <pkshih@realtek.com>
To:     <kvalo@kernel.org>
CC:     <linux-wireless@vger.kernel.org>, <damon.chen@realtek.com>,
        <phhuang@realtek.com>
Subject: [PATCH 05/11] rtw89: fix potential TX stuck
Date:   Fri, 10 Jun 2022 15:26:04 +0800
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From: Kuan-Chung Chen <damon.chen@realtek.com>

The potential TX stuck occurs when there are lots of packets to be
transmitted and the boundary of the tx_resource is hit. Add this
patch to avoid the TX stuck when burst traffic.

Signed-off-by: Kuan-Chung Chen <damon.chen@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
---
 drivers/net/wireless/realtek/rtw89/core.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/wireless/realtek/rtw89/core.c b/drivers/net/wireless/realtek/rtw89/core.c
index 608c325ec62a6..cea4de6bb939c 100644
--- a/drivers/net/wireless/realtek/rtw89/core.c
+++ b/drivers/net/wireless/realtek/rtw89/core.c
@@ -1945,6 +1945,10 @@ static void rtw89_core_txq_schedule(struct rtw89_dev *rtwdev, u8 ac, bool *reinv
 		ieee80211_return_txq(hw, txq, sched_txq);
 		if (frame_cnt != 0)
 			rtw89_core_tx_kick_off(rtwdev, rtw89_core_get_qsel(rtwdev, txq->tid));
+
+		/* bound of tx_resource could get stuck due to burst traffic */
+		if (frame_cnt == tx_resource)
+			*reinvoke = true;
 	}
 	ieee80211_txq_schedule_end(hw, ac);
 }
-- 
2.25.1