Commit-ID: f5c9c9be267f73eda6a668ac81ddde56ed7fa793
Gitweb: http://git.kernel.org/tip/f5c9c9be267f73eda6a668ac81ddde56ed7fa793
Author: John Stultz <johnstul@xxxxxxxxxx>
AuthorDate: Wed, 3 Mar 2010 19:57:27 -0800
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Sat, 13 Mar 2010 01:14:14 +0100
sparc: Convert sparc to use read/update_persistent_clock
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.
[ davem: compile fix: Here's a version that compiles, you have to get
rid of the now unused variably last_rtc_update since we build with
-Werror ]
Signed-off-by: John Stultz <johnstul@xxxxxxxxxx>
Acked-by: David S. Miller <davem@xxxxxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: sparclinux@xxxxxxxxxxxxxxx
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
arch/sparc/Kconfig | 2 +-
arch/sparc/kernel/time_32.c | 18 +++++-------------
2 files changed, 6 insertions(+), 14 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..4453003 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
@@ -87,9 +92,6 @@ u32 (*do_arch_gettimeoffset)(void);
static irqreturn_t timer_interrupt(int dummy, void *dev_id)
{
- /* last time the cmos clock got updated */
- static long last_rtc_update;
-
#ifndef CONFIG_SMP
profile_tick(CPU_PROFILING);
#endif
@@ -101,16 +103,6 @@ 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
--
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