linux-kernel - [PATCH 4.4 051/132] soc: ti: knav_qmss: fix reference leak in knav_queue

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Message-Id: <20201228124848.904602260@linuxfoundation.org>
Date:   Mon, 28 Dec 2020 13:48:55 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Zhang Qilong <zhangqilong3@...wei.com>,
        Santosh Shilimkar <santosh.shilimkar@...cle.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.4 051/132] soc: ti: knav_qmss: fix reference leak in knav_queue_probe

From: Zhang Qilong <zhangqilong3@...wei.com>

[ Upstream commit ec8684847d8062496c4619bc3fcff31c19d56847 ]

pm_runtime_get_sync will increment pm usage counter even it
failed. Forgetting to pm_runtime_put_noidle will result in
reference leak in knav_queue_probe, so we should fix it.

Fixes: 41f93af900a20 ("soc: ti: add Keystone Navigator QMSS driver")
Signed-off-by: Zhang Qilong <zhangqilong3@...wei.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@...cle.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/soc/ti/knav_qmss_queue.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/soc/ti/knav_qmss_queue.c b/drivers/soc/ti/knav_qmss_queue.c
index 8c03a80b482dd..3a3bc8ef532a7 100644
--- a/drivers/soc/ti/knav_qmss_queue.c
+++ b/drivers/soc/ti/knav_qmss_queue.c
@@ -1717,6 +1717,7 @@ static int knav_queue_probe(struct platform_device *pdev)
 	pm_runtime_enable(&pdev->dev);
 	ret = pm_runtime_get_sync(&pdev->dev);
 	if (ret < 0) {
+		pm_runtime_put_noidle(&pdev->dev);
 		dev_err(dev, "Failed to enable QMSS\n");
 		return ret;
 	}
-- 
2.27.0