From 8d89839589bf8d8498ee21f4257242d38df9b7e0 Mon Sep 17 00:00:00 2001
From: Nir Soffer <nirsof@gmail.com>
Date: Sun, 19 Apr 2015 03:41:26 +0300
Subject: [PATCH] udev: settle should return immediately when timeout is 0

udevadm manual says:

    A value of 0 will check if the queue is empty and always return
    immediately.

However, currently we ignore the deadline if the value is 0, and wait
without any limit.

Zero timeout behaved according to the documentation until commit
ead7c62ab7 (udevadm: settle - kill alarm()). Looking at this patch, it
seems that the behavior change was unintended.

This patch restores the documented behavior.

(cherry picked from commit bf23b9f86f6807c3029a6a46e1999ae0c87ca22a)
---
 src/udev/udevadm-settle.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/udev/udevadm-settle.c b/src/udev/udevadm-settle.c
index e60c4623bd..40e3e28b1e 100644
--- a/src/udev/udevadm-settle.c
+++ b/src/udev/udevadm-settle.c
@@ -149,7 +149,7 @@ static int adm_settle(struct udev *udev, int argc, char *argv[]) {
                         break;
                 }
 
-                if (timeout > 0 && now(CLOCK_MONOTONIC) >= deadline)
+                if (now(CLOCK_MONOTONIC) >= deadline)
                         break;
 
                 /* wake up when queue is empty */