linux-kernel - [PATCH 4.2.y-ckt 156/268] crypto: algif_hash - Remove custom release parent function

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Message-Id: <1453926929-17663-157-git-send-email-kamal@canonical.com>
Date:	Wed, 27 Jan 2016 12:33:37 -0800
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Herbert Xu <herbert@...dor.apana.org.au>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 4.2.y-ckt 156/268] crypto: algif_hash - Remove custom release parent function

4.2.8-ckt3 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: Herbert Xu <herbert@...dor.apana.org.au>

commit f1d84af1835846a5a2b827382c5848faf2bb0e75 upstream.

This patch removes the custom release parent function as the
generic af_alg_release_parent now works for nokey sockets too.

Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 crypto/algif_hash.c | 43 +++----------------------------------------
 1 file changed, 3 insertions(+), 40 deletions(-)

diff --git a/crypto/algif_hash.c b/crypto/algif_hash.c
index 46637be..3653ab6 100644
--- a/crypto/algif_hash.c
+++ b/crypto/algif_hash.c
@@ -384,7 +384,7 @@ static int hash_setkey(void *private, const u8 *key, unsigned int keylen)
 	return err;
 }
 
-static void hash_sock_destruct_common(struct sock *sk)
+static void hash_sock_destruct(struct sock *sk)
 {
 	struct alg_sock *ask = alg_sk(sk);
 	struct hash_ctx *ctx = ask->private;
@@ -392,33 +392,10 @@ static void hash_sock_destruct_common(struct sock *sk)
 	sock_kzfree_s(sk, ctx->result,
 		      crypto_ahash_digestsize(crypto_ahash_reqtfm(&ctx->req)));
 	sock_kfree_s(sk, ctx, ctx->len);
-}
-
-static void hash_sock_destruct(struct sock *sk)
-{
-	hash_sock_destruct_common(sk);
-	af_alg_release_parent(sk);
-}
-
-static void hash_release_parent_nokey(struct sock *sk)
-{
-	struct alg_sock *ask = alg_sk(sk);
-
-	if (!ask->refcnt) {
-		sock_put(ask->parent);
-		return;
-	}
-
 	af_alg_release_parent(sk);
 }
 
-static void hash_sock_destruct_nokey(struct sock *sk)
-{
-	hash_sock_destruct_common(sk);
-	hash_release_parent_nokey(sk);
-}
-
-static int hash_accept_parent_common(void *private, struct sock *sk)
+static int hash_accept_parent_nokey(void *private, struct sock *sk)
 {
 	struct hash_ctx *ctx;
 	struct alg_sock *ask = alg_sk(sk);
@@ -461,21 +438,7 @@ static int hash_accept_parent(void *private, struct sock *sk)
 	if (!tfm->has_key && crypto_ahash_has_setkey(tfm->hash))
 		return -ENOKEY;
 
-	return hash_accept_parent_common(private, sk);
-}
-
-static int hash_accept_parent_nokey(void *private, struct sock *sk)
-{
-	int err;
-
-	err = hash_accept_parent_common(private, sk);
-	if (err)
-		goto out;
-
-	sk->sk_destruct = hash_sock_destruct_nokey;
-
-out:
-	return err;
+	return hash_accept_parent_nokey(private, sk);
 }
 
 static const struct af_alg_type algif_type_hash = {
-- 
1.9.1