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From e7cd53f60cc2cb5e98efa0e88cfd0e7dd8325085 Mon Sep 17 00:00:00 2001
From: Nir Soffer <nirsof@gmail.com>
Date: Sun, 19 Apr 2015 02:49:47 +0300
Subject: [PATCH] udev: Fix ping timeout when settle timeout is 0

When running udevadm settle --timeout=0, the ping always times out, and
udevadm will return 0 without checking the queue state.

(David: Use a reasonable timeout to still get the barrier provided by
 ctrl-ping)

Cherry-picked from: 7375b3c4871861f100860ea4c2848e66b60e6ca4
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 40e3e28b1e..33597bc209 100644
--- a/src/udev/udevadm-settle.c
+++ b/src/udev/udevadm-settle.c
@@ -114,7 +114,7 @@ static int adm_settle(struct udev *udev, int argc, char *argv[]) {
 
                 uctrl = udev_ctrl_new(udev);
                 if (uctrl != NULL) {
-                        if (udev_ctrl_send_ping(uctrl, timeout) < 0) {
+                        if (udev_ctrl_send_ping(uctrl, MAX(5U, timeout)) < 0) {
                                 log_debug("no connection to daemon");
                                 udev_ctrl_unref(uctrl);
                                 return EXIT_SUCCESS;