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| author |   Thomas Gleixner <tglx@linutronix.de> | 2013-02-14 19:46:10 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2013-02-14 19:46:10 +0100 |
| commit | 9f4646d28362bc424b8a4c7d09ea1c2f1759371a (patch) | |
| tree | 0ff9dc36f1ef598736725f3eb30e164128d39774 /kernel | |
| parent | Merge branch 'timers/for-arm' into timers/core (diff) | |
| parent | time, Fix setting of hardware clock in NTP code (diff) | |
| download | linux-dev-9f4646d28362bc424b8a4c7d09ea1c2f1759371a.tar.xz linux-dev-9f4646d28362bc424b8a4c7d09ea1c2f1759371a.zip | |
Merge branch 'fortglx/3.9/time' of git://git.linaro.org/people/jstultz/linux into timers/core
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/time.c | 8 | ||||
| -rw-r--r-- | kernel/time/ntp.c | 8 |
2 files changed, 14 insertions, 2 deletions
diff --git a/kernel/time.c b/kernel/time.c index d226c6a3fd28..c2a27dd93142 100644 --- a/kernel/time.c +++ b/kernel/time.c @@ -115,6 +115,12 @@ SYSCALL_DEFINE2(gettimeofday, struct timeval __user *, tv, } /* + * Indicates if there is an offset between the system clock and the hardware + * clock/persistent clock/rtc. + */ +int persistent_clock_is_local; + +/* * Adjust the time obtained from the CMOS to be UTC time instead of * local time. * @@ -135,6 +141,8 @@ static inline void warp_clock(void) struct timespec adjust; adjust = current_kernel_time(); + if (sys_tz.tz_minuteswest != 0) + persistent_clock_is_local = 1; adjust.tv_sec += sys_tz.tz_minuteswest * 60; do_settimeofday(&adjust); } diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c index 313b161504b7..b10a42bb0165 100644 --- a/kernel/time/ntp.c +++ b/kernel/time/ntp.c @@ -511,13 +511,17 @@ static void sync_cmos_clock(struct work_struct *work) getnstimeofday(&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(now); + fail = update_persistent_clock(adjust); #endif #ifdef CONFIG_RTC_SYSTOHC if (fail == -ENODEV) - fail = rtc_set_ntp_time(now); + fail = rtc_set_ntp_time(adjust); #endif } |