From: Qinglang Miao <miaoqinglang@huawei.com>
To: Corentin Labbe <clabbe.montjoie@gmail.com>,
Herbert Xu <herbert@gondor.apana.org.au>,
"David S. Miller" <davem@davemloft.net>,
Maxime Ripard <mripard@kernel.org>, Chen-Yu Tsai <wens@csie.org>,
"Jernej Skrabec" <jernej.skrabec@siol.net>
Cc: <linux-crypto@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>,
Qinglang Miao <miaoqinglang@huawei.com>
Subject: [PATCH 2/3] crypto: sun8i - fix reference leak in sun8i-ce
Date: Fri, 27 Nov 2020 17:46:45 +0800 [thread overview]
Message-ID: <20201127094646.121735-3-miaoqinglang@huawei.com> (raw)
In-Reply-To: <20201127094646.121735-1-miaoqinglang@huawei.com>
pm_runtime_get_sync will increment pm usage counter even it
failed. Forgetting to putting operation will result in a
reference leak here.
A new function pm_runtime_resume_and_get is introduced in
[0] to keep usage counter balanced. So We fix the reference
leak by replacing it with new funtion.
[0] dd8088d5a896 ("PM: runtime: Add pm_runtime_resume_and_get to deal with usage counter")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com>
---
drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
index 158422ff5..00194d1d9 100644
--- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
@@ -932,7 +932,7 @@ static int sun8i_ce_probe(struct platform_device *pdev)
if (err)
goto error_alg;
- err = pm_runtime_get_sync(ce->dev);
+ err = pm_runtime_resume_and_get(ce->dev);
if (err < 0)
goto error_alg;
--
2.23.0
next prev parent reply other threads:[~2020-11-27 9:43 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-27 9:46 [PATCH 0/3] crypto: sun - fix reference leak Qinglang Miao
2020-11-27 9:46 ` [PATCH 1/3] crypto: sun4i - fix reference leak in sun4i-ss Qinglang Miao
2020-11-27 9:46 ` Qinglang Miao [this message]
2020-11-27 9:46 ` [PATCH 3/3] crypto: sun8i - fix reference leak in sun8i-ss Qinglang Miao
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