From: Shixin Liu <liushixin2@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-sunxi@lists.linux.dev>, <linux-kernel@vger.kernel.org>,
Shixin Liu <liushixin2@huawei.com>
Subject: [PATCH -next 1/7] crypto: sun4i-ss - Fix PM reference leak when pm_runtime_get_sync() fails
Date: Thu, 8 Apr 2021 15:18:31 +0800 [thread overview]
Message-ID: <20210408071831.836638-1-liushixin2@huawei.com> (raw)
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@huawei.com>
---
drivers/crypto/allwinner/sun4i-ss/sun4i-ss-cipher.c | 2 +-
drivers/crypto/allwinner/sun4i-ss/sun4i-ss-core.c | 2 +-
drivers/crypto/allwinner/sun4i-ss/sun4i-ss-hash.c | 2 +-
drivers/crypto/allwinner/sun4i-ss/sun4i-ss-prng.c | 2 +-
4 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-cipher.c b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-cipher.c
index c2e6f5ed1d79..dec79fa3ebaf 100644
--- a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-cipher.c
+++ b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-cipher.c
@@ -561,7 +561,7 @@ int sun4i_ss_cipher_init(struct crypto_tfm *tfm)
sizeof(struct sun4i_cipher_req_ctx) +
crypto_skcipher_reqsize(op->fallback_tfm));
- err = pm_runtime_get_sync(op->ss->dev);
+ err = pm_runtime_resume_and_get(op->ss->dev);
if (err < 0)
goto error_pm;
diff --git a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-core.c b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-core.c
index ef224d5e4903..44b8fc4b786d 100644
--- a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-core.c
+++ b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-core.c
@@ -454,7 +454,7 @@ static int sun4i_ss_probe(struct platform_device *pdev)
* this info could be useful
*/
- err = pm_runtime_get_sync(ss->dev);
+ err = pm_runtime_resume_and_get(ss->dev);
if (err < 0)
goto error_pm;
diff --git a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-hash.c b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-hash.c
index c1b4585e9bbc..d28292762b32 100644
--- a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-hash.c
+++ b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-hash.c
@@ -27,7 +27,7 @@ int sun4i_hash_crainit(struct crypto_tfm *tfm)
algt = container_of(alg, struct sun4i_ss_alg_template, alg.hash);
op->ss = algt->ss;
- err = pm_runtime_get_sync(op->ss->dev);
+ err = pm_runtime_resume_and_get(op->ss->dev);
if (err < 0)
return err;
diff --git a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-prng.c b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-prng.c
index 443160a114bb..491fcb7b81b4 100644
--- a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-prng.c
+++ b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-prng.c
@@ -29,7 +29,7 @@ int sun4i_ss_prng_generate(struct crypto_rng *tfm, const u8 *src,
algt = container_of(alg, struct sun4i_ss_alg_template, alg.rng);
ss = algt->ss;
- err = pm_runtime_get_sync(ss->dev);
+ err = pm_runtime_resume_and_get(ss->dev);
if (err < 0)
return err;
--
2.25.1
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next reply other threads:[~2021-04-08 7:21 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-08 7:18 Shixin Liu [this message]
2021-04-16 11:31 ` [PATCH -next 1/7] crypto: sun4i-ss - Fix PM reference leak when pm_runtime_get_sync() fails Herbert Xu
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