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authorMaciej W. Rozycki <macro@linux-mips.org>2008-09-22 17:42:40 -0400
committerThomas Gleixner <tglx@linutronix.de>2008-09-24 11:33:12 -0400
commiteb3f938fd6292dc79f43a5fe14784b044776e9f0 (patch)
treeeb0b485e95af3c6c15871992a9a6d0977869c9e7 /kernel/time
parent77dd3b3bd23111040c504be6bd873a5ad09f02df (diff)
ntp: let update_persistent_clock() sleep
This is a change that makes the 11-minute RTC update be run in the process context. This is so that update_persistent_clock() can sleep, which may be required for certain types of RTC hardware -- most notably I2C devices. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Rik van Riel <riel@redhat.com> Cc: David Brownell <david-b@pacbell.net> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/time')
-rw-r--r--kernel/time/ntp.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c
index c6921aa1a42a..450a45cb01c1 100644
--- a/kernel/time/ntp.c
+++ b/kernel/time/ntp.c
@@ -10,13 +10,13 @@
10 10
11#include <linux/mm.h> 11#include <linux/mm.h>
12#include <linux/time.h> 12#include <linux/time.h>
13#include <linux/timer.h>
14#include <linux/timex.h> 13#include <linux/timex.h>
15#include <linux/jiffies.h> 14#include <linux/jiffies.h>
16#include <linux/hrtimer.h> 15#include <linux/hrtimer.h>
17#include <linux/capability.h> 16#include <linux/capability.h>
18#include <linux/math64.h> 17#include <linux/math64.h>
19#include <linux/clocksource.h> 18#include <linux/clocksource.h>
19#include <linux/workqueue.h>
20#include <asm/timex.h> 20#include <asm/timex.h>
21 21
22/* 22/*
@@ -218,11 +218,11 @@ void second_overflow(void)
218/* Disable the cmos update - used by virtualization and embedded */ 218/* Disable the cmos update - used by virtualization and embedded */
219int no_sync_cmos_clock __read_mostly; 219int no_sync_cmos_clock __read_mostly;
220 220
221static void sync_cmos_clock(unsigned long dummy); 221static void sync_cmos_clock(struct work_struct *work);
222 222
223static DEFINE_TIMER(sync_cmos_timer, sync_cmos_clock, 0, 0); 223static DECLARE_DELAYED_WORK(sync_cmos_work, sync_cmos_clock);
224 224
225static void sync_cmos_clock(unsigned long dummy) 225static void sync_cmos_clock(struct work_struct *work)
226{ 226{
227 struct timespec now, next; 227 struct timespec now, next;
228 int fail = 1; 228 int fail = 1;
@@ -258,13 +258,13 @@ static void sync_cmos_clock(unsigned long dummy)
258 next.tv_sec++; 258 next.tv_sec++;
259 next.tv_nsec -= NSEC_PER_SEC; 259 next.tv_nsec -= NSEC_PER_SEC;
260 } 260 }
261 mod_timer(&sync_cmos_timer, jiffies + timespec_to_jiffies(&next)); 261 schedule_delayed_work(&sync_cmos_work, timespec_to_jiffies(&next));
262} 262}
263 263
264static void notify_cmos_timer(void) 264static void notify_cmos_timer(void)
265{ 265{
266 if (!no_sync_cmos_clock) 266 if (!no_sync_cmos_clock)
267 mod_timer(&sync_cmos_timer, jiffies + 1); 267 schedule_delayed_work(&sync_cmos_work, 0);
268} 268}
269 269
270#else 270#else