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Subject[PATCH 12/14] sparc: Convert sparc to use read/update_persistent_clock
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This patch converts the sparc architecture to use the generic read_persistent_clock and update_persistent_clock interfaces, reducing the amount of arch specific code we have to maintain, and allowing for further cleanups in the future.

I have not built or tested this patch, so help from arch maintainers would be appreciated.

Cc: David S. Miller" <davem@davemloft.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Andrew Morton <akpm@linux-foundation.org>

Signed-off-by: John Stultz <johnstul@us.ibm.com>
---
arch/sparc/Kconfig | 2 +-
arch/sparc/kernel/time_32.c | 15 +++++----------
2 files changed, 6 insertions(+), 11 deletions(-)
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 4097f6a..0e8ec2a 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -72,7 +72,7 @@ config ARCH_USES_GETTIMEOFFSET

config GENERIC_CMOS_UPDATE
bool
- default y if SPARC64
+ default y

config GENERIC_CLOCKEVENTS
bool
diff --git a/arch/sparc/kernel/time_32.c b/arch/sparc/kernel/time_32.c
index 0d4c09b..a3f1690 100644
--- a/arch/sparc/kernel/time_32.c
+++ b/arch/sparc/kernel/time_32.c
@@ -78,6 +78,11 @@ __volatile__ unsigned int *master_l10_counter;

u32 (*do_arch_gettimeoffset)(void);

+int update_persistent_clock(struct timespec now)
+{
+ return set_rtc_mmss(now.tv_sec);
+}
+
/*
* timer_interrupt() needs to keep up the real-time clock,
* as well as call the "do_timer()" routine every clocktick
@@ -101,16 +106,6 @@ static irqreturn_t timer_interrupt(int dummy, void *dev_id)

do_timer(1);

- /* Determine when to update the Mostek clock. */
- if (ntp_synced() &&
- xtime.tv_sec > last_rtc_update + 660 &&
- (xtime.tv_nsec / 1000) >= 500000 - ((unsigned) TICK_SIZE) / 2 &&
- (xtime.tv_nsec / 1000) <= 500000 + ((unsigned) TICK_SIZE) / 2) {
- if (set_rtc_mmss(xtime.tv_sec) == 0)
- last_rtc_update = xtime.tv_sec;
- else
- last_rtc_update = xtime.tv_sec - 600; /* do it again in 60 s */
- }
write_sequnlock(&xtime_lock);

#ifndef CONFIG_SMP
--
1.6.0.4


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