linux-kernel - [PATCH 5.11 121/342] crypto: sa2ul - Fix PM reference leak in sa_ul

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Message-Id: <20210510102014.076614071@linuxfoundation.org>
Date:   Mon, 10 May 2021 12:18:31 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Shixin Liu <liushixin2@...wei.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.11 121/342] crypto: sa2ul - Fix PM reference leak in sa_ul_probe()

From: Shixin Liu <liushixin2@...wei.com>

[ Upstream commit 13343badae093977295341d5a050f51ef128821c ]

pm_runtime_get_sync will increment pm usage counter even it failed.
Forgetting to putting operation will result in reference leak here.
Fix it by replacing it with pm_runtime_resume_and_get to keep usage
counter balanced.

Signed-off-by: Shixin Liu <liushixin2@...wei.com>
Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/crypto/sa2ul.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/crypto/sa2ul.c b/drivers/crypto/sa2ul.c
index f300b0a5958a..d7b1628fb484 100644
--- a/drivers/crypto/sa2ul.c
+++ b/drivers/crypto/sa2ul.c
@@ -2350,7 +2350,7 @@ static int sa_ul_probe(struct platform_device *pdev)
 	dev_set_drvdata(sa_k3_dev, dev_data);
 
 	pm_runtime_enable(dev);
-	ret = pm_runtime_get_sync(dev);
+	ret = pm_runtime_resume_and_get(dev);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "%s: failed to get sync: %d\n", __func__,
 			ret);
-- 
2.30.2