From: Sven Eckelmann <sven@narfation.org>
Date: Sun, 21 Jun 2015 12:42:49 +0000 (+0200)
Subject: batman-adv: Return EINVAL on invalid gw_bandwidth change
X-Git-Tag: firefly_0821_release~176^2~1159^2~82^2~6
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=77927b7d9dd6c9c5f59f0f49c76cda54b908090e;p=firefly-linux-kernel-4.4.55.git

batman-adv: Return EINVAL on invalid gw_bandwidth change

Invalid speed settings by the user are currently acknowledged as correct
but not stored. Instead the return of the store operation of the file
"gw_bandwidth" should indicate that the given value is not acceptable.

Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>
---

diff --git a/net/batman-adv/gateway_common.c b/net/batman-adv/gateway_common.c
index c50931cbfbb5..6b930a651f38 100644
--- a/net/batman-adv/gateway_common.c
+++ b/net/batman-adv/gateway_common.c
@@ -19,6 +19,7 @@
 #include "main.h"
 
 #include <linux/atomic.h>
+#include <linux/errno.h>
 #include <linux/byteorder/generic.h>
 #include <linux/kernel.h>
 #include <linux/netdevice.h>
@@ -160,7 +161,7 @@ ssize_t batadv_gw_bandwidth_set(struct net_device *net_dev, char *buff,
 
 	ret = batadv_parse_gw_bandwidth(net_dev, buff, &down_new, &up_new);
 	if (!ret)
-		goto end;
+		return -EINVAL;
 
 	if (!down_new)
 		down_new = 1;
@@ -184,7 +185,6 @@ ssize_t batadv_gw_bandwidth_set(struct net_device *net_dev, char *buff,
 	atomic_set(&bat_priv->gw.bandwidth_up, up_new);
 	batadv_gw_tvlv_container_update(bat_priv);
 
-end:
 	return count;
 }