From 4dbbf673f7d711e3f26396c43cbd391dc8f6c354 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Wed, 2 Mar 2022 20:25:20 +0100 Subject: nfc: llcp: use centralized exiting of bind on errors Coding style encourages centralized exiting of functions, so rewrite llcp_sock_bind() error paths to use such pattern. This reduces the duplicated cleanup code, make success path visually shorter and also cleans up the errors in proper order (in reversed way from initialization). No functional impact expected. Signed-off-by: Krzysztof Kozlowski Signed-off-by: David S. Miller --- net/nfc/llcp_sock.c | 25 +++++++++++++++---------- 1 file changed, 15 insertions(+), 10 deletions(-) (limited to 'net/nfc') diff --git a/net/nfc/llcp_sock.c b/net/nfc/llcp_sock.c index fdf0856182c6..c9d5c427f035 100644 --- a/net/nfc/llcp_sock.c +++ b/net/nfc/llcp_sock.c @@ -108,21 +108,13 @@ static int llcp_sock_bind(struct socket *sock, struct sockaddr *addr, int alen) llcp_sock->service_name_len, GFP_KERNEL); if (!llcp_sock->service_name) { - nfc_llcp_local_put(llcp_sock->local); - llcp_sock->local = NULL; - llcp_sock->dev = NULL; ret = -ENOMEM; - goto put_dev; + goto sock_llcp_put_local; } llcp_sock->ssap = nfc_llcp_get_sdp_ssap(local, llcp_sock); if (llcp_sock->ssap == LLCP_SAP_MAX) { - nfc_llcp_local_put(llcp_sock->local); - llcp_sock->local = NULL; - kfree(llcp_sock->service_name); - llcp_sock->service_name = NULL; - llcp_sock->dev = NULL; ret = -EADDRINUSE; - goto put_dev; + goto free_service_name; } llcp_sock->reserved_ssap = llcp_sock->ssap; @@ -132,6 +124,19 @@ static int llcp_sock_bind(struct socket *sock, struct sockaddr *addr, int alen) pr_debug("Socket bound to SAP %d\n", llcp_sock->ssap); sk->sk_state = LLCP_BOUND; + nfc_put_device(dev); + release_sock(sk); + + return 0; + +free_service_name: + kfree(llcp_sock->service_name); + llcp_sock->service_name = NULL; + +sock_llcp_put_local: + nfc_llcp_local_put(llcp_sock->local); + llcp_sock->local = NULL; + llcp_sock->dev = NULL; put_dev: nfc_put_device(dev); -- cgit