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From:   Wei Yongjun <weiyongjun1@huawei.com>
To:     Ping-Ke Shih <pkshih@realtek.com>,
        Kalle Valo <kvalo@codeaurora.org>
CC:     Wei Yongjun <weiyongjun1@huawei.com>,
        <linux-wireless@vger.kernel.org>, <kernel-janitors@vger.kernel.org>
Subject: [PATCH] rtlwifi: Fix file release memory leak
Date:   Wed, 4 Sep 2019 14:16:11 +0000
Message-ID: <20190904141611.4780-1-weiyongjun1@huawei.com>
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Sender: linux-wireless-owner@vger.kernel.org
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When using single_open() for opening, single_release() should be
used instead of seq_release(), otherwise there is a memory leak.

This is detected by Coccinelle semantic patch.

Fixes: 610247f46feb ("rtlwifi: Improve debugging by using debugfs")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
---
 drivers/net/wireless/realtek/rtlwifi/debug.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/realtek/rtlwifi/debug.c b/drivers/net/wireless/realtek/rtlwifi/debug.c
index a051de16284d..55db71c766fe 100644
--- a/drivers/net/wireless/realtek/rtlwifi/debug.c
+++ b/drivers/net/wireless/realtek/rtlwifi/debug.c
@@ -88,7 +88,7 @@ static const struct file_operations file_ops_common = {
 	.open = dl_debug_open_common,
 	.read = seq_read,
 	.llseek = seq_lseek,
-	.release = seq_release,
+	.release = single_release,
 };
 
 static int rtl_debug_get_mac_page(struct seq_file *m, void *v)