linux-kernel - [PATCH 1/4] time: Ensure we normalize the timekeeper in tk_xtime

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Message-Id: <1345595449-34965-2-git-send-email-john.stultz@linaro.org>
Date:	Tue, 21 Aug 2012 20:30:46 -0400
From:	John Stultz <john.stultz@...aro.org>
To:	linux-kernel <linux-kernel@...r.kernel.org>
Cc:	John Stultz <john.stultz@...aro.org>,
	Ingo Molnar <mingo@...nel.org>,
	Prarit Bhargava <prarit@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andreas Schwab <schwab@...ux-m68k.org>
Subject: [PATCH 1/4] time: Ensure we normalize the timekeeper in tk_xtime_add

Andreas noticed problems with resume on specific hardware
after commit 1e75fa8be9fb61e1af46b5b3b176347a4c958ca1
combined with commit b44d50dcacea0d485ca2ff9140f8cc28ee22f28d

After some digging I realized we aren't normalizing
the timekeeper after the add. This patch to correct this
resolved the issue.

Cc: Ingo Molnar <mingo@...nel.org>
Cc: Prarit Bhargava <prarit@...hat.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Andreas Schwab <schwab@...ux-m68k.org>
Reported-by: Andreas Schwab <schwab@...ux-m68k.org>
Tested-by: Andreas Schwab <schwab@...ux-m68k.org>
Signed-off-by: John Stultz <john.stultz@...aro.org>
---
 kernel/time/timekeeping.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index 898bef0..258164a 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -115,6 +115,7 @@ static void tk_xtime_add(struct timekeeper *tk, const struct timespec *ts)
 {
 	tk->xtime_sec += ts->tv_sec;
 	tk->xtime_nsec += (u64)ts->tv_nsec << tk->shift;
+	tk_normalize_xtime(tk);
 }
 
 static void tk_set_wall_to_mono(struct timekeeper *tk, struct timespec wtm)
-- 
1.7.9.5

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