diff options
Diffstat (limited to 'crypto/api.c')
| -rw-r--r-- | crypto/api.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/crypto/api.c b/crypto/api.c index e67cc63368ed..f509d73fa682 100644 --- a/crypto/api.c +++ b/crypto/api.c @@ -408,6 +408,7 @@ struct crypto_tfm *__crypto_alloc_tfm(struct crypto_alg *alg, u32 type, goto out_err; tfm->__crt_alg = alg; + refcount_set(&tfm->refcnt, 1); err = crypto_init_ops(tfm, type, mask); if (err) @@ -507,6 +508,7 @@ void *crypto_create_tfm_node(struct crypto_alg *alg, tfm = (struct crypto_tfm *)(mem + tfmsize); tfm->__crt_alg = alg; tfm->node = node; + refcount_set(&tfm->refcnt, 1); err = frontend->init_tfm(tfm); if (err) @@ -619,6 +621,8 @@ void crypto_destroy_tfm(void *mem, struct crypto_tfm *tfm) if (IS_ERR_OR_NULL(mem)) return; + if (!refcount_dec_and_test(&tfm->refcnt)) + return; alg = tfm->__crt_alg; if (!tfm->exit && alg->cra_exit) |