linux-kernel - [PATCH] wifi: rtw89: wow: Add unlock mutex before to return

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Message-ID: <20241001091320.38687-1-alessandro.zanni87@gmail.com>
Date: Tue,  1 Oct 2024 11:13:16 +0200
From: Alessandro Zanni <alessandro.zanni87@...il.com>
To: pkshih@...ltek.com,
	kvalo@...nel.org
Cc: Alessandro Zanni <alessandro.zanni87@...il.com>,
	linux-wireless@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	skhan@...uxfoundation.org,
	anupnewsmail@...il.com
Subject: [PATCH] wifi: rtw89: wow: Add unlock mutex before to return

In error handling code for "ieee80211_gtk_rekey_add failed", release
the mutex before to return.

Found with Coccinelle static analisys tool,
script: https://coccinelle.gitlabpages.inria.fr/website/rules/mut.cocci

Signed-off-by: Alessandro Zanni <alessandro.zanni87@...il.com>
---
 drivers/net/wireless/realtek/rtw89/wow.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/realtek/rtw89/wow.c b/drivers/net/wireless/realtek/rtw89/wow.c
index 86e24e07780d..8045acb27cf9 100644
--- a/drivers/net/wireless/realtek/rtw89/wow.c
+++ b/drivers/net/wireless/realtek/rtw89/wow.c
@@ -624,6 +624,7 @@ static struct ieee80211_key_conf *rtw89_wow_gtk_rekey(struct rtw89_dev *rtwdev,
 	kfree(rekey_conf);
 	if (IS_ERR(key)) {
 		rtw89_err(rtwdev, "ieee80211_gtk_rekey_add failed\n");
+		mutex_unlock(&rtwdev->mutex);
 		return NULL;
 	}
 
-- 
2.43.0