From 98b78068d13095fdd40883b2b6c815a9ebb59435 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: bf23b9f86f6807c3029a6a46e1999ae0c87ca22a
Resolves: #1210981
---
 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 e60c462..40e3e28 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 */