From: Thomas Gleixner <tglx@linutronix.de>
Date: Mon, 22 Apr 2013 07:37:04 +0000 (+0200)
Subject: timekeeping: Update tk->cycle_last in resume
X-Git-Tag: firefly_0821_release~3680^2~653^2~2
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=77c675ba18836802f6b73d2d773481d06ebc0f04;p=firefly-linux-kernel-4.4.55.git

timekeeping: Update tk->cycle_last in resume

commit 7ec98e15aa (timekeeping: Delay update of clock->cycle_last)
forgot to update tk->cycle_last in the resume path. This results in a
stale value versus clock->cycle_last and prevents resume in the worst
case.

Reported-by: Jiri Slaby <jslaby@suse.cz>
Reported-and-tested-by: Borislav Petkov <bp@alien8.de>
Acked-by: John Stultz <john.stultz@linaro.org>
Cc: Linux-pm mailing list <linux-pm@lists.linux-foundation.org>
Link: http://lkml.kernel.org/r/alpine.LFD.2.02.1304211648150.21884@ionos
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index 675f720a848b..98cd470bbe49 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -951,7 +951,7 @@ static void timekeeping_resume(void)
 		__timekeeping_inject_sleeptime(tk, &ts_delta);
 
 	/* Re-base the last cycle value */
-	clock->cycle_last = cycle_now;
+	tk->cycle_last = clock->cycle_last = cycle_now;
 	tk->ntp_error = 0;
 	timekeeping_suspended = 0;
 	timekeeping_update(tk, false, true);