linux-kernel - [PATCH 14/14] arm: Convert arm to use read_persistent

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Message-Id: <1267675049-12337-15-git-send-email-johnstul@us.ibm.com>
Date:	Wed,  3 Mar 2010 19:57:29 -0800
From:	John Stultz <johnstul@...ibm.com>
To:	"	lkml" <linux-kernel@...r.kernel.org>
Cc:	John Stultz <johnstul@...ibm.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Russell King <linux@....linux.org.uk>
Subject: [PATCH 14/14] arm: Convert arm to use read_persistent_clock

This patch converts the arm 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.

Also removes a direct xtime access, replacing it with current_kernel_time()

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

Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Russell King <linux@....linux.org.uk>
Signed-off-by: John Stultz <johnstul@...ibm.com>
---
 arch/arm/Kconfig       |    3 +++
 arch/arm/kernel/time.c |    7 +++++++
 2 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 3b18128..b70929d 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -43,6 +43,9 @@ config GENERIC_GPIO
 config GENERIC_TIME
 	bool
 
+config GENERIC_CMOS_UPDATE
+        def_bool y
+
 config GENERIC_CLOCKEVENTS
 	bool
 
diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c
index 2875380..eebe8f5 100644
--- a/arch/arm/kernel/time.c
+++ b/arch/arm/kernel/time.c
@@ -79,6 +79,13 @@ static unsigned long dummy_gettimeoffset(void)
 }
 #endif
 
+int update_persistent_clock(struct timespec now)
+{
+	if (set_rtc == NULL)
+		return -1;
+	return set_rtc(now);
+}
+
 #ifdef CONFIG_LEDS_TIMER
 static inline void do_leds(void)
 {
-- 
1.6.0.4

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