From 892ba4f26afff2498f9f35b986d232d20e2e2541 Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Thu, 19 Nov 2015 15:12:40 -0600
Subject: [PATCH] DS1307: Change year bias to 1968 which is a leap year juse
 like 2000

---
 drivers/timers/ds3231.c        | 10 ++++++----
 sched/clock/clock_initialize.c |  2 +-
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/drivers/timers/ds3231.c b/drivers/timers/ds3231.c
index 9704a7a2c7..c00b5e11a6 100644
--- a/drivers/timers/ds3231.c
+++ b/drivers/timers/ds3231.c
@@ -392,9 +392,11 @@ int up_rtc_getdatetime(FAR struct tm *tp)
       tp->tm_year = tmp + 100;
     }
 #else
-  /* No century indicator.  The RTC will hold years since 1970 */
+  /* No century indicator.  The RTC will hold years since 1968 (a leap year like
+   * 2000)
+   */
 
-  tp->tm_year = tmp + 70;
+  tp->tm_year = tmp + 68;
 #endif
 
   rtc_dumptime(tp, "Returning");
@@ -512,10 +514,10 @@ int up_rtc_settime(FAR const struct timespec *tp)
     }
 
 #else
-  /* Use years since 1970 */
+  /* Use years since 1968 (a leap year like 2000) */
 
   century = 0;
-  year    = newtm.tm_year - 70;
+  year    = newtm.tm_year - 68;
 #endif
 
   /* Save the month (1-12) with century */
diff --git a/sched/clock/clock_initialize.c b/sched/clock/clock_initialize.c
index de855e3bc6..11d889f6d0 100644
--- a/sched/clock/clock_initialize.c
+++ b/sched/clock/clock_initialize.c
@@ -201,11 +201,11 @@ static void clock_inittime(void)
 
 void clock_initialize(void)
 {
+#if defined(CONFIG_RTC) && !defined(CONFIG_RTC_EXTERNAL)
   /* Initialize the internal RTC hardware.  Initialization of external RTC
    * must be deferred until the system has booted.
    */
 
-#if defined(CONFIG_RTC) && !defined(CONFIG_RTC_EXTERNAL)
   up_rtcinitialize();
 #endif