From 2b5a60aca874ab526d33912391ea491c267d246f Mon Sep 17 00:00:00 2001
From: Peter Hutterer <peter.hutterer@who-t.net>
Date: Thu, 22 Jan 2015 11:36:02 +1000
Subject: [PATCH] logind: fix sd_eviocrevoke ioctl call

If the third argument is non-null, the kernel will always error out with
EINVAL and devices won't get revoked.

Reported-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
(cherry picked from commit 8dbce34b0373923c7aa7d795024bbedb0a85c7ea)
---
 src/login/logind-session-device.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/login/logind-session-device.c b/src/login/logind-session-device.c
index 932abb82f9..c2de862250 100644
--- a/src/login/logind-session-device.c
+++ b/src/login/logind-session-device.c
@@ -107,7 +107,7 @@ static int sd_eviocrevoke(int fd) {
 
         assert(fd >= 0);
 
-        r = ioctl(fd, EVIOCREVOKE, 1);
+        r = ioctl(fd, EVIOCREVOKE, NULL);
         if (r < 0) {
                 r = -errno;
                 if (r == -EINVAL && !warned) {