linux-kernel - [PATCH] wlcore: fix runtime pm imbalance in wl1271_op

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Message-Id: <20200520125724.12832-1-dinghao.liu@zju.edu.cn>
Date:   Wed, 20 May 2020 20:57:22 +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>,
        Johannes Berg <johannes.berg@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Maital Hahn <maitalm@...com>,
        Fuqian Huang <huangfq.daxian@...il.com>,
        Emmanuel Grumbach <emmanuel.grumbach@...el.com>,
        "Jason A. Donenfeld" <Jason@...c4.com>,
        Tony Lindgren <tony@...mide.com>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] wlcore: fix runtime pm imbalance in wl1271_op_suspend

When wlcore_hw_interrupt_notify() returns an error code,
a pairing runtime PM usage counter decrement is needed to
keep the counter balanced.

Signed-off-by: Dinghao Liu <dinghao.liu@....edu.cn>
---
 drivers/net/wireless/ti/wlcore/main.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c
index f140f7d7f553..8faee8cec1bc 100644
--- a/drivers/net/wireless/ti/wlcore/main.c
+++ b/drivers/net/wireless/ti/wlcore/main.c
@@ -1746,9 +1746,7 @@ static int __maybe_unused wl1271_op_suspend(struct ieee80211_hw *hw,
 
 		ret = wl1271_configure_suspend(wl, wlvif, wow);
 		if (ret < 0) {
-			mutex_unlock(&wl->mutex);
-			wl1271_warning("couldn't prepare device to suspend");
-			return ret;
+			goto out_sleep;
 		}
 	}
 
-- 
2.17.1