diff options
Diffstat (limited to 'arch/mips/lasat')
| -rw-r--r-- | arch/mips/lasat/ds1603.c | 11 | ||||
| -rw-r--r-- | arch/mips/lasat/sysctl.c | 12 |
2 files changed, 18 insertions, 5 deletions
diff --git a/arch/mips/lasat/ds1603.c b/arch/mips/lasat/ds1603.c index 8bd5cf820eed..e6ce39fefa78 100644 --- a/arch/mips/lasat/ds1603.c +++ b/arch/mips/lasat/ds1603.c @@ -136,7 +136,7 @@ static void rtc_end_op(void) lasat_ndelay(1000); } -void read_persistent_clock(struct timespec *ts) +void read_persistent_clock64(struct timespec64 *ts) { unsigned long word; unsigned long flags; @@ -152,14 +152,19 @@ void read_persistent_clock(struct timespec *ts) ts->tv_nsec = 0; } -int rtc_mips_set_mmss(unsigned long time) +int update_persistent_clock64(struct timespec64 now) { + time64_t time = now.tv_sec; unsigned long flags; spin_lock_irqsave(&rtc_lock, flags); rtc_init_op(); rtc_write_byte(SET_TIME_CMD); - rtc_write_word(time); + /* + * Due to the hardware limitation, we cast to 'unsigned long' type, + * so it will overflow in year 2106 on 32-bit machine. + */ + rtc_write_word((unsigned long)time); rtc_end_op(); spin_unlock_irqrestore(&rtc_lock, flags); diff --git a/arch/mips/lasat/sysctl.c b/arch/mips/lasat/sysctl.c index 6f7422400f32..ead07c243c6a 100644 --- a/arch/mips/lasat/sysctl.c +++ b/arch/mips/lasat/sysctl.c @@ -73,8 +73,16 @@ int proc_dolasatrtc(struct ctl_table *table, int write, if (r) return r; - if (write) - rtc_mips_set_mmss(rtctmp); + if (write) { + /* + * Due to the RTC hardware limitation, we can not actually + * use the full 64-bit range here. + */ + ts.tv_sec = rtctmp; + ts.tv_nsec = 0; + + update_persistent_clock64(ts); + } return 0; } |