| Message ID | 20210408071831.836638-1-liushixin2@huawei.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [-next,1/7] crypto: sun4i-ss - Fix PM reference leak when pm_runtime_get_sync() fails | expand |
On Thu, Apr 08, 2021 at 03:18:31PM +0800, Shixin Liu wrote: > 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(-) All applied. Thanks.
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;
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(-)