From da3db6812d56e7ba11e0cf301e38568099f12884 Mon Sep 17 00:00:00 2001
From: Ben Greear <greearb@candelatech.com>
Date: Fri, 3 Apr 2015 19:34:33 -0400
Subject: [PATCH] Fix INTERFACE_ADD parsing

This fixes a regression caused by commit
efa232f9159e33e18ed624906b0093e11ddcf78e ('Add support for virtual
interface creation/deletion') for the case where an empty extra argument
is included.

Signed-off-by: Ben Greear <greearb@candelatech.com>
---
 wpa_supplicant/ctrl_iface.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/wpa_supplicant/ctrl_iface.c b/wpa_supplicant/ctrl_iface.c
index 377b9ed16..d48ac8a88 100644
--- a/wpa_supplicant/ctrl_iface.c
+++ b/wpa_supplicant/ctrl_iface.c
@@ -8593,10 +8593,17 @@ static int wpa_supplicant_global_iface_add(struct wpa_global *global,
 		pos = os_strchr(pos, '\t');
 		if (pos)
 			*pos++ = '\0';
+		if (!extra[0])
+			break;
+
 		if (os_strcmp(extra, "create") == 0)
 			create_iface = 1;
-		else
+		else {
+			wpa_printf(MSG_DEBUG,
+				   "INTERFACE_ADD unsupported extra parameter: '%s'",
+				   extra);
 			return -1;
+		}
 	} while (0);
 
 	if (create_iface) {