linux-kernel - [PATCH AUTOSEL 4.9 03/48] crypto: omap-aes - fix the reference count leak of omap device

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Message-Id: <20201223022417.2794032-3-sashal@kernel.org>
Date:   Tue, 22 Dec 2020 21:23:31 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Zhang Qilong <zhangqilong3@...wei.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Sasha Levin <sashal@...nel.org>, linux-crypto@...r.kernel.org
Subject: [PATCH AUTOSEL 4.9 03/48] crypto: omap-aes - fix the reference count leak of omap device

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

[ Upstream commit 383e8a823014532ffd81c787ef9009f1c2bd3b79 ]

pm_runtime_get_sync() will increment  pm usage counter even
when it returns an error code. We should call put operation
in error handling paths of omap_aes_hw_init.

Signed-off-by: Zhang Qilong <zhangqilong3@...wei.com>
Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/crypto/omap-aes.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/crypto/omap-aes.c b/drivers/crypto/omap-aes.c
index fe32dd95ae4ff..717cde167873a 100644
--- a/drivers/crypto/omap-aes.c
+++ b/drivers/crypto/omap-aes.c
@@ -251,6 +251,7 @@ static int omap_aes_hw_init(struct omap_aes_dev *dd)
 
 	err = pm_runtime_get_sync(dd->dev);
 	if (err < 0) {
+		pm_runtime_put_noidle(dd->dev);
 		dev_err(dd->dev, "failed to get sync: %d\n", err);
 		return err;
 	}
-- 
2.27.0