linux-kernel - [PATCH] h8300 trivial conversion to GENERIC

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Date:	Tue, 10 Apr 2007 16:25:00 -0700
From:	john stultz <johnstul@...ibm.com>
To:	ysato@...rs.sourceforge.jp
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	lkml <linux-kernel@...r.kernel.org>
Subject: [PATCH] h8300 trivial conversion to GENERIC_TIME

Here is a trivial conversion of the h8300 arch to the GENERIC_TIME
infrastructure (h8300 does not have better then jiffies resolution, so
there are no clocksources to add). I have not tested this at all, but it
seems pretty straight forward

I'd appreciate any comments or feedback!

thanks
-john


Signed-off-by: John Stultz <johnstul@...ibm.com>


diff --git a/arch/h8300/Kconfig b/arch/h8300/Kconfig
index 1734d96..86f6ca3 100644
--- a/arch/h8300/Kconfig
+++ b/arch/h8300/Kconfig
@@ -53,6 +53,10 @@ config GENERIC_CALIBRATE_DELAY
 	bool
 	default y
 
+config GENERIC_TIME
+	bool
+	default y
+
 config TIME_LOW_RES
 	bool
 	default y
diff --git a/arch/h8300/kernel/time.c b/arch/h8300/kernel/time.c
index d1ef615..91d3b56 100644
--- a/arch/h8300/kernel/time.c
+++ b/arch/h8300/kernel/time.c
@@ -66,55 +66,3 @@ void time_init(void)
 
 	platform_timer_setup(timer_interrupt);
 }
-
-/*
- * This version of gettimeofday has near microsecond resolution.
- */
-void do_gettimeofday(struct timeval *tv)
-{
-	unsigned long flags;
-	unsigned long usec, sec;
-
-	read_lock_irqsave(&xtime_lock, flags);
-	usec = 0;
-	sec = xtime.tv_sec;
-	usec += (xtime.tv_nsec / 1000);
-	read_unlock_irqrestore(&xtime_lock, flags);
-
-	while (usec >= 1000000) {
-		usec -= 1000000;
-		sec++;
-	}
-
-	tv->tv_sec = sec;
-	tv->tv_usec = usec;
-}
-
-EXPORT_SYMBOL(do_gettimeofday);
-
-int do_settimeofday(struct timespec *tv)
-{
-	if ((unsigned long)tv->tv_nsec >= NSEC_PER_SEC)
-		return -EINVAL;
-
-	write_lock_irq(&xtime_lock);
-	/* This is revolting. We need to set the xtime.tv_usec
-	 * correctly. However, the value in this location is
-	 * is value at the last tick.
-	 * Discover what correction gettimeofday
-	 * would have done, and then undo it!
-	 */
-	while (tv->tv_nsec < 0) {
-		tv->tv_nsec += NSEC_PER_SEC;
-		tv->tv_sec--;
-	}
-
-	xtime.tv_sec = tv->tv_sec;
-	xtime.tv_nsec = tv->tv_nsec;
-	ntp_clear();
-	write_sequnlock_irq(&xtime_lock);
-	clock_was_set();
-	return 0;
-}
-
-EXPORT_SYMBOL(do_settimeofday);

-
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