linux-kernel - [PATCH] wlcore: fix runtime pm imbalance in wl1271_tx

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Message-Id: <20200520124241.9931-1-dinghao.liu@zju.edu.cn>
Date:   Wed, 20 May 2020 20:42:38 +0800
From:   Dinghao Liu <dinghao.liu@....edu.cn>
To:     dinghao.liu@....edu.cn, kjlu@....edu
Cc:     Kalle Valo <kvalo@...eaurora.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Allison Randal <allison@...utok.net>,
        Alexios Zavras <alexios.zavras@...el.com>,
        "Jason A. Donenfeld" <Jason@...c4.com>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] wlcore: fix runtime pm imbalance in wl1271_tx_work

There are two error handling paths in this functon. When
wlcore_tx_work_locked() returns an error code, we should
decrease the runtime PM usage counter the same way as the
error handling path beginning from pm_runtime_get_sync().

Signed-off-by: Dinghao Liu <dinghao.liu@....edu.cn>
---
 drivers/net/wireless/ti/wlcore/tx.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/ti/wlcore/tx.c b/drivers/net/wireless/ti/wlcore/tx.c
index 90e56d4c3df3..e20e18cd04ae 100644
--- a/drivers/net/wireless/ti/wlcore/tx.c
+++ b/drivers/net/wireless/ti/wlcore/tx.c
@@ -863,6 +863,7 @@ void wl1271_tx_work(struct work_struct *work)
 
 	ret = wlcore_tx_work_locked(wl);
 	if (ret < 0) {
+		pm_runtime_put_noidle(wl->dev);
 		wl12xx_queue_recovery_work(wl);
 		goto out;
 	}
-- 
2.17.1