commit 		17c9787b1d6891636b5be9e4e5a08278b44e9a7a
Author: 	Miroslav Lichvar <mlichvar@redhat.com>
Date: 		Fri Sep 01 11:42:26 2017 +0100

		phc2sys: fix handling of multiple state changes.

		When the master clock changed its state and then changed it back to the
		original state before phc2sys could process the first change, e.g. SLAVE
		-> UNCALIBRATED -> SLAVE after a clockcheck failure, the second change
		was ignored because the new value was the same as the original state,
		which wasn't updated for the first change yet. This caused phc2sys to be
		stuck with a wrong state.

		Fix phc2sys to check both the state and new_state variables of the clock.

		Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>

diff --git a/phc2sys.c b/phc2sys.c
index b6f6719..e2b5c47 100644
--- a/phc2sys.c
+++ b/phc2sys.c
@@ -786,7 +786,7 @@ static int recv_subscribed(struct node *node, struct ptp_message *msg,
 			port->state = state;
 			clock = port->clock;
 			state = clock_compute_state(node, clock);
-			if (clock->state != state) {
+			if (clock->state != state || clock->new_state) {
 				clock->new_state = state;
 				node->state_changed = 1;
 			}