1 files changed, 30 insertions, 18 deletions

diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c
index 24174b4d669b..072bb066bb7d 100644
--- a/kernel/time/ntp.c
+++ b/kernel/time/ntp.c
@@ -15,6 +15,7 @@
 #include <linux/time.h>
 #include <linux/mm.h>
 #include <linux/module.h>
+#include <linux/rtc.h>
 
 #include "tick-internal.h"
 
@@ -22,7 +23,7 @@
  * NTP timekeeping variables:
  */
 
-DEFINE_SPINLOCK(ntp_lock);
+DEFINE_RAW_SPINLOCK(ntp_lock);
 
 
 /* USER_HZ period (usecs): */
@@ -347,7 +348,7 @@ void ntp_clear(void)
 {
 	unsigned long flags;
 
-	spin_lock_irqsave(&ntp_lock, flags);
+	raw_spin_lock_irqsave(&ntp_lock, flags);
 
 	time_adjust	= 0;		/* stop active adjtime() */
 	time_status	|= STA_UNSYNC;
@@ -361,7 +362,7 @@ void ntp_clear(void)
 
 	/* Clear PPS state variables */
 	pps_clear();
-	spin_unlock_irqrestore(&ntp_lock, flags);
+	raw_spin_unlock_irqrestore(&ntp_lock, flags);
 
 }
 
@@ -371,9 +372,9 @@ u64 ntp_tick_length(void)
 	unsigned long flags;
 	s64 ret;
 
-	spin_lock_irqsave(&ntp_lock, flags);
+	raw_spin_lock_irqsave(&ntp_lock, flags);
 	ret = tick_length;
-	spin_unlock_irqrestore(&ntp_lock, flags);
+	raw_spin_unlock_irqrestore(&ntp_lock, flags);
 	return ret;
 }
 
@@ -394,7 +395,7 @@ int second_overflow(unsigned long secs)
 	int leap = 0;
 	unsigned long flags;
 
-	spin_lock_irqsave(&ntp_lock, flags);
+	raw_spin_lock_irqsave(&ntp_lock, flags);
 
 	/*
 	 * Leap second processing. If in leap-insert state at the end of the
@@ -478,13 +479,12 @@ int second_overflow(unsigned long secs)
 	time_adjust = 0;
 
 out:
-	spin_unlock_irqrestore(&ntp_lock, flags);
+	raw_spin_unlock_irqrestore(&ntp_lock, flags);
 
 	return leap;
 }
 
-#ifdef CONFIG_GENERIC_CMOS_UPDATE
-
+#if defined(CONFIG_GENERIC_CMOS_UPDATE) || defined(CONFIG_RTC_SYSTOHC)
 static void sync_cmos_clock(struct work_struct *work);
 
 static DECLARE_DELAYED_WORK(sync_cmos_work, sync_cmos_clock);
@@ -510,14 +510,26 @@ static void sync_cmos_clock(struct work_struct *work)
 	}
 
 	getnstimeofday(&now);
-	if (abs(now.tv_nsec - (NSEC_PER_SEC / 2)) <= tick_nsec / 2)
-		fail = update_persistent_clock(now);
+	if (abs(now.tv_nsec - (NSEC_PER_SEC / 2)) <= tick_nsec / 2) {
+		struct timespec adjust = now;
+
+		fail = -ENODEV;
+		if (persistent_clock_is_local)
+			adjust.tv_sec -= (sys_tz.tz_minuteswest * 60);
+#ifdef CONFIG_GENERIC_CMOS_UPDATE
+		fail = update_persistent_clock(adjust);
+#endif
+#ifdef CONFIG_RTC_SYSTOHC
+		if (fail == -ENODEV)
+			fail = rtc_set_ntp_time(adjust);
+#endif
+	}
 
 	next.tv_nsec = (NSEC_PER_SEC / 2) - now.tv_nsec - (TICK_NSEC / 2);
 	if (next.tv_nsec <= 0)
 		next.tv_nsec += NSEC_PER_SEC;
 
-	if (!fail)
+	if (!fail || fail == -ENODEV)
 		next.tv_sec = 659;
 	else
 		next.tv_sec = 0;
@@ -660,7 +672,7 @@ int do_adjtimex(struct timex *txc)
 
 	getnstimeofday(&ts);
 
-	spin_lock_irq(&ntp_lock);
+	raw_spin_lock_irq(&ntp_lock);
 
 	if (txc->modes & ADJ_ADJTIME) {
 		long save_adjust = time_adjust;
@@ -702,7 +714,7 @@ int do_adjtimex(struct timex *txc)
 	/* fill PPS status fields */
 	pps_fill_timex(txc);
 
-	spin_unlock_irq(&ntp_lock);
+	raw_spin_unlock_irq(&ntp_lock);
 
 	txc->time.tv_sec = ts.tv_sec;
 	txc->time.tv_usec = ts.tv_nsec;
@@ -900,7 +912,7 @@ void hardpps(const struct timespec *phase_ts, const struct timespec *raw_ts)
 
 	pts_norm = pps_normalize_ts(*phase_ts);
 
-	spin_lock_irqsave(&ntp_lock, flags);
+	raw_spin_lock_irqsave(&ntp_lock, flags);
 
 	/* clear the error bits, they will be set again if needed */
 	time_status &= ~(STA_PPSJITTER | STA_PPSWANDER | STA_PPSERROR);
@@ -913,7 +925,7 @@ void hardpps(const struct timespec *phase_ts, const struct timespec *raw_ts)
 	 * just start the frequency interval */
 	if (unlikely(pps_fbase.tv_sec == 0)) {
 		pps_fbase = *raw_ts;
-		spin_unlock_irqrestore(&ntp_lock, flags);
+		raw_spin_unlock_irqrestore(&ntp_lock, flags);
 		return;
 	}
 
@@ -928,7 +940,7 @@ void hardpps(const struct timespec *phase_ts, const struct timespec *raw_ts)
 		time_status |= STA_PPSJITTER;
 		/* restart the frequency calibration interval */
 		pps_fbase = *raw_ts;
-		spin_unlock_irqrestore(&ntp_lock, flags);
+		raw_spin_unlock_irqrestore(&ntp_lock, flags);
 		pr_err("hardpps: PPSJITTER: bad pulse\n");
 		return;
 	}
@@ -945,7 +957,7 @@ void hardpps(const struct timespec *phase_ts, const struct timespec *raw_ts)
 
 	hardpps_update_phase(pts_norm.nsec);
 
-	spin_unlock_irqrestore(&ntp_lock, flags);
+	raw_spin_unlock_irqrestore(&ntp_lock, flags);
 }
 EXPORT_SYMBOL(hardpps);