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 3/3] crypto: sun8i - fix reference leak in sun8i-ss
Date: Fri, 27 Nov 2020 17:46:46 +0800 [thread overview]
Message-ID: <20201127094646.121735-4-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-ss/sun8i-ss-cipher.c | 2 +-
drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c
index ed2a69f82..7c355bc2f 100644
--- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c
+++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c
@@ -351,7 +351,7 @@ int sun8i_ss_cipher_init(struct crypto_tfm *tfm)
op->enginectx.op.prepare_request = NULL;
op->enginectx.op.unprepare_request = NULL;
- err = pm_runtime_get_sync(op->ss->dev);
+ err = pm_runtime_resume_and_get(op->ss->dev);
if (err < 0) {
dev_err(op->ss->dev, "pm error %d\n", err);
goto error_pm;
diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c
index e0ddc6847..80e89066d 100644
--- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c
+++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c
@@ -753,7 +753,7 @@ static int sun8i_ss_probe(struct platform_device *pdev)
if (err)
goto error_alg;
- err = pm_runtime_get_sync(ss->dev);
+ err = pm_runtime_resume_and_get(ss->dev);
if (err < 0)
goto error_alg;
--
2.23.0
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 ` [PATCH 2/3] crypto: sun8i - fix reference leak in sun8i-ce Qinglang Miao
2020-11-27 9:46 ` Qinglang Miao [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20201127094646.121735-4-miaoqinglang@huawei.com \
--to=miaoqinglang@huawei.com \
--cc=clabbe.montjoie@gmail.com \
--cc=davem@davemloft.net \
--cc=herbert@gondor.apana.org.au \
--cc=jernej.skrabec@siol.net \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-crypto@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mripard@kernel.org \
--cc=wens@csie.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).