From a309323328d9d6e0bf5d9ea1d75920e53b9beef3 Mon Sep 17 00:00:00 2001
From: Peter Hutterer <peter.hutterer@who-t.net>
Date: Fri, 5 Jan 2018 11:58:42 +1000
Subject: [PATCH] config: fix NULL value detection for ID_INPUT being unset

Erroneous condition caused us to keep going with all devices that didn't have
ID_INPUT set.

Fixes: 5aad81445c8c3d6
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104382
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

Upstream-status: Backport
https://patchwork.freedesktop.org/patch/196090/
Affects: < 1.20.0
[Yocto # 12899]

Signed-off-by: Armin Kuster <akuser808@gmail.com>

---
 config/udev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/config/udev.c b/config/udev.c
index e198e8609..3a73189e2 100644
--- a/config/udev.c
+++ b/config/udev.c
@@ -135,7 +135,7 @@ device_added(struct udev_device *udev_device)
 #endif
 
     value = udev_device_get_property_value(udev_device, "ID_INPUT");
-    if (value && !strcmp(value, "0")) {
+    if (!value || !strcmp(value, "0")) {
         LogMessageVerb(X_INFO, 10,
                        "config/udev: ignoring device %s without "
                        "property ID_INPUT set\n", path);
-- 
2.17.1