diff options
Diffstat (limited to 'arch/ppc/kernel/pmac_time.c')
| -rw-r--r-- | arch/ppc/kernel/pmac_time.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/ppc/kernel/pmac_time.c b/arch/ppc/kernel/pmac_time.c index 3b7dd283f..ebd0037de 100644 --- a/arch/ppc/kernel/pmac_time.c +++ b/arch/ppc/kernel/pmac_time.c @@ -28,6 +28,8 @@ #include "time.h" +extern rwlock_t xtime_lock; + /* Apparently the RTC stores seconds since 1 Jan 1904 */ #define RTC_OFFSET 2082844800 @@ -151,16 +153,21 @@ int __init via_calibrate_decr(void) static int time_sleep_notify(struct pmu_sleep_notifier *self, int when) { static unsigned long time_diff; + unsigned long flags; switch (when) { case PBOOK_SLEEP_NOW: + read_lock_irqsave(&xtime_lock, flags); time_diff = xtime.tv_sec - pmac_get_rtc_time(); + read_unlock_irqrestore(&xtime_lock, flags); break; case PBOOK_WAKE: + write_lock_irqsave(&xtime_lock, flags); xtime.tv_sec = pmac_get_rtc_time() + time_diff; xtime.tv_usec = 0; set_dec(decrementer_count); last_rtc_update = xtime.tv_sec; + write_unlock_irqrestore(&xtime_lock, flags); break; } return PBOOK_SLEEP_OK; |