linux-kernel - [PATCH] gtp: simplify error handling code in 'gtp_encap

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Message-Id: <20200105173607.5456-1-christophe.jaillet@wanadoo.fr>
Date:   Sun,  5 Jan 2020 18:36:07 +0100
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     pablo@...filter.org, laforge@...monks.org, davem@...emloft.net
Cc:     osmocom-net-gprs@...ts.osmocom.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH] gtp: simplify error handling code in 'gtp_encap_enable()'

'gtp_encap_disable_sock(sk)' handles the case where sk is NULL, so there
is no need to test it before calling the function.

This saves a few line of code.

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/net/gtp.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/net/gtp.c b/drivers/net/gtp.c
index ecfe26215935..1499b4a37758 100644
--- a/drivers/net/gtp.c
+++ b/drivers/net/gtp.c
@@ -849,8 +849,7 @@ static int gtp_encap_enable(struct gtp_dev *gtp, struct nlattr *data[])
 
 		sk1u = gtp_encap_enable_socket(fd1, UDP_ENCAP_GTP1U, gtp);
 		if (IS_ERR(sk1u)) {
-			if (sk0)
-				gtp_encap_disable_sock(sk0);
+			gtp_encap_disable_sock(sk0);
 			return PTR_ERR(sk1u);
 		}
 	}
@@ -858,10 +857,8 @@ static int gtp_encap_enable(struct gtp_dev *gtp, struct nlattr *data[])
 	if (data[IFLA_GTP_ROLE]) {
 		role = nla_get_u32(data[IFLA_GTP_ROLE]);
 		if (role > GTP_ROLE_SGSN) {
-			if (sk0)
-				gtp_encap_disable_sock(sk0);
-			if (sk1u)
-				gtp_encap_disable_sock(sk1u);
+			gtp_encap_disable_sock(sk0);
+			gtp_encap_disable_sock(sk1u);
 			return -EINVAL;
 		}
 	}
-- 
2.20.1