linux-kernel - [PATCH 2/3] batman-adv: Split a condition check

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Message-ID: <56391F0B.2060102@users.sourceforge.net>
Date:	Tue, 3 Nov 2015 21:54:35 +0100
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Antonio Quartulli <antonio@...hcoding.com>,
	"David S. Miller" <davem@...emloft.net>,
	Marek Lindner <mareklindner@...mailbox.ch>,
	Simon Wunderlich <sw@...onwunderlich.de>,
	b.a.t.m.a.n@...ts.open-mesh.org, netdev@...r.kernel.org
Cc:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH 2/3] batman-adv: Split a condition check

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Tue, 3 Nov 2015 20:41:02 +0100

Let us split a check for a condition at the beginning of the
batadv_is_ap_isolated() function so that a direct return can be performed
in this function if the variable "vlan" contained a null pointer.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 net/batman-adv/translation-table.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index 48315de..965a004 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -3319,7 +3319,10 @@ bool batadv_is_ap_isolated(struct batadv_priv *bat_priv, u8 *src, u8 *dst,
 	bool ret = false;
 
 	vlan = batadv_softif_vlan_get(bat_priv, vid);
-	if (!vlan || !atomic_read(&vlan->ap_isolation))
+	if (!vlan)
+		return false;
+
+	if (!atomic_read(&vlan->ap_isolation))
 		goto out;
 
 	tt_local_entry = batadv_tt_local_hash_find(bat_priv, dst, vid);
-- 
2.6.2

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