linux-kernel - [PATCH] wlcore: fix runtime pm imbalance in __wl1271_op_remove

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Message-Id: <20200520130806.14789-1-dinghao.liu@zju.edu.cn>
Date:   Wed, 20 May 2020 21:08:04 +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>,
        Fuqian Huang <huangfq.daxian@...il.com>,
        Tony Lindgren <tony@...mide.com>,
        "Jason A. Donenfeld" <Jason@...c4.com>,
        Emmanuel Grumbach <emmanuel.grumbach@...el.com>,
        Maital Hahn <maitalm@...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_remove_interface

When wl12xx_cmd_role_disable() 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 | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c
index f140f7d7f553..e6c299efbc2e 100644
--- a/drivers/net/wireless/ti/wlcore/main.c
+++ b/drivers/net/wireless/ti/wlcore/main.c
@@ -2698,12 +2698,16 @@ static void __wl1271_op_remove_interface(struct wl1271 *wl,
 
 		if (!wlcore_is_p2p_mgmt(wlvif)) {
 			ret = wl12xx_cmd_role_disable(wl, &wlvif->role_id);
-			if (ret < 0)
+			if (ret < 0) {
+				pm_runtime_put_noidle(wl->dev);
 				goto deinit;
+			}
 		} else {
 			ret = wl12xx_cmd_role_disable(wl, &wlvif->dev_role_id);
-			if (ret < 0)
+			if (ret < 0) {
+				pm_runtime_put_noidle(wl->dev);
 				goto deinit;
+			}
 		}
 
 		pm_runtime_mark_last_busy(wl->dev);
-- 
2.17.1