From 07b24c7c08bdc2d36de10881a17145426f47742b Mon Sep 17 00:00:00 2001 From: Eric Biggers Date: Tue, 25 Feb 2020 20:59:22 -0800 Subject: crypto: pcrypt - simplify error handling in pcrypt_create_aead() Simplify the error handling in pcrypt_create_aead() by taking advantage of crypto_grab_aead() now handling an ERR_PTR() name and by taking advantage of crypto_drop_aead() now accepting (as a no-op) a spawn that hasn't been grabbed yet. This required also making padata_free_shell() accept a NULL argument. Signed-off-by: Eric Biggers Signed-off-by: Herbert Xu --- crypto/pcrypt.c | 33 +++++++++------------------------ 1 file changed, 9 insertions(+), 24 deletions(-) (limited to 'crypto') diff --git a/crypto/pcrypt.c b/crypto/pcrypt.c index 1b632139a8c1..8bddc65cd509 100644 --- a/crypto/pcrypt.c +++ b/crypto/pcrypt.c @@ -232,17 +232,12 @@ static int pcrypt_create_aead(struct crypto_template *tmpl, struct rtattr **tb, struct crypto_attr_type *algt; struct aead_instance *inst; struct aead_alg *alg; - const char *name; int err; algt = crypto_get_attr_type(tb); if (IS_ERR(algt)) return PTR_ERR(algt); - name = crypto_attr_alg_name(tb[1]); - if (IS_ERR(name)) - return PTR_ERR(name); - inst = kzalloc(sizeof(*inst) + sizeof(*ctx), GFP_KERNEL); if (!inst) return -ENOMEM; @@ -252,21 +247,21 @@ static int pcrypt_create_aead(struct crypto_template *tmpl, struct rtattr **tb, ctx = aead_instance_ctx(inst); ctx->psenc = padata_alloc_shell(pencrypt); if (!ctx->psenc) - goto out_free_inst; + goto err_free_inst; ctx->psdec = padata_alloc_shell(pdecrypt); if (!ctx->psdec) - goto out_free_psenc; + goto err_free_inst; err = crypto_grab_aead(&ctx->spawn, aead_crypto_instance(inst), - name, 0, 0); + crypto_attr_alg_name(tb[1]), 0, 0); if (err) - goto out_free_psdec; + goto err_free_inst; alg = crypto_spawn_aead_alg(&ctx->spawn); err = pcrypt_init_instance(aead_crypto_instance(inst), &alg->base); if (err) - goto out_drop_aead; + goto err_free_inst; inst->alg.base.cra_flags = CRYPTO_ALG_ASYNC; @@ -286,21 +281,11 @@ static int pcrypt_create_aead(struct crypto_template *tmpl, struct rtattr **tb, inst->free = pcrypt_free; err = aead_register_instance(tmpl, inst); - if (err) - goto out_drop_aead; - -out: + if (err) { +err_free_inst: + pcrypt_free(inst); + } return err; - -out_drop_aead: - crypto_drop_aead(&ctx->spawn); -out_free_psdec: - padata_free_shell(ctx->psdec); -out_free_psenc: - padata_free_shell(ctx->psenc); -out_free_inst: - kfree(inst); - goto out; } static int pcrypt_create(struct crypto_template *tmpl, struct rtattr **tb) -- cgit v1.2.3-59-g8ed1b