From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Wed, 31 Dec 2008 00:16:21 +0000 (-0800)
Subject: Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel... 
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=bb758e9637e5ddc;p=deliverable%2Flinux.git

Merge branch 'timers-core-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  hrtimers: fix warning in kernel/hrtimer.c
  x86: make sure we really have an hpet mapping before using it
  x86: enable HPET on Fujitsu u9200
  linux/timex.h: cleanup for userspace
  posix-timers: simplify de_thread()->exit_itimers() path
  posix-timers: check ->it_signal instead of ->it_pid to validate the timer
  posix-timers: use "struct pid*" instead of "struct task_struct*"
  nohz: suppress needless timer reprogramming
  clocksource, acpi_pm.c: put acpi_pm_read_slow() under CONFIG_PCI
  nohz: no softirq pending warnings for offline cpus
  hrtimer: removing all ur callback modes, fix
  hrtimer: removing all ur callback modes, fix hotplug
  hrtimer: removing all ur callback modes
  x86: correct link to HPET timer specification
  rtc-cmos: export second NVRAM bank

Fixed up conflicts in sound/drivers/pcsp/pcsp.c and sound/core/hrtimer.c
manually.
---

bb758e9637e5ddcff84a97177415499ae1fed498
diff --cc sound/core/hrtimer.c
index c1d285921f80,000000000000..34c7d48f5061
mode 100644,000000..100644
--- a/sound/core/hrtimer.c
+++ b/sound/core/hrtimer.c
@@@ -1,155 -1,0 +1,154 @@@
 +/*
 + * ALSA timer back-end using hrtimer
 + * Copyright (C) 2008 Takashi Iwai
 + *
 + *   This program is free software; you can redistribute it and/or modify
 + *   it under the terms of the GNU General Public License as published by
 + *   the Free Software Foundation; either version 2 of the License, or
 + *   (at your option) any later version.
 + *
 + *   This program is distributed in the hope that it will be useful,
 + *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 + *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 + *   GNU General Public License for more details.
 + *
 + *   You should have received a copy of the GNU General Public License
 + *   along with this program; if not, write to the Free Software
 + *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 + *
 + */
 +
 +#include <linux/init.h>
 +#include <linux/module.h>
 +#include <linux/moduleparam.h>
 +#include <linux/hrtimer.h>
 +#include <sound/core.h>
 +#include <sound/timer.h>
 +
 +MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
 +MODULE_DESCRIPTION("ALSA hrtimer backend");
 +MODULE_LICENSE("GPL");
 +
 +MODULE_ALIAS("snd-timer-" __stringify(SNDRV_TIMER_GLOBAL_HRTIMER));
 +
 +#define NANO_SEC	1000000000UL	/* 10^9 in sec */
 +static unsigned int resolution;
 +
 +struct snd_hrtimer {
 +	struct snd_timer *timer;
 +	struct hrtimer hrt;
 +};
 +
 +static enum hrtimer_restart snd_hrtimer_callback(struct hrtimer *hrt)
 +{
 +	struct snd_hrtimer *stime = container_of(hrt, struct snd_hrtimer, hrt);
 +	struct snd_timer *t = stime->timer;
 +	hrtimer_forward_now(hrt, ns_to_ktime(t->sticks * resolution));
 +	snd_timer_interrupt(stime->timer, t->sticks);
 +	return HRTIMER_RESTART;
 +}
 +
 +static int snd_hrtimer_open(struct snd_timer *t)
 +{
 +	struct snd_hrtimer *stime;
 +
 +	stime = kmalloc(sizeof(*stime), GFP_KERNEL);
 +	if (!stime)
 +		return -ENOMEM;
 +	hrtimer_init(&stime->hrt, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
 +	stime->timer = t;
- 	stime->hrt.cb_mode = HRTIMER_CB_IRQSAFE_UNLOCKED;
 +	stime->hrt.function = snd_hrtimer_callback;
 +	t->private_data = stime;
 +	return 0;
 +}
 +
 +static int snd_hrtimer_close(struct snd_timer *t)
 +{
 +	struct snd_hrtimer *stime = t->private_data;
 +
 +	if (stime) {
 +		hrtimer_cancel(&stime->hrt);
 +		kfree(stime);
 +		t->private_data = NULL;
 +	}
 +	return 0;
 +}
 +
 +static int snd_hrtimer_start(struct snd_timer *t)
 +{
 +	struct snd_hrtimer *stime = t->private_data;
 +
 +	hrtimer_start(&stime->hrt, ns_to_ktime(t->sticks * resolution),
 +		      HRTIMER_MODE_REL);
 +	return 0;
 +}
 +
 +static int snd_hrtimer_stop(struct snd_timer *t)
 +{
 +	struct snd_hrtimer *stime = t->private_data;
 +
 +	hrtimer_cancel(&stime->hrt);
 +	return 0;
 +}
 +
 +static struct snd_timer_hardware hrtimer_hw = {
 +	.flags =	SNDRV_TIMER_HW_AUTO,
 +	.open =		snd_hrtimer_open,
 +	.close =	snd_hrtimer_close,
 +	.start =	snd_hrtimer_start,
 +	.stop =		snd_hrtimer_stop,
 +};
 +
 +/*
 + * entry functions
 + */
 +
 +static struct snd_timer *mytimer;
 +
 +static int __init snd_hrtimer_init(void)
 +{
 +	struct snd_timer *timer;
 +	struct timespec tp;
 +	int err;
 +
 +	hrtimer_get_res(CLOCK_MONOTONIC, &tp);
 +	if (tp.tv_sec > 0 || !tp.tv_nsec) {
 +		snd_printk(KERN_ERR
 +			   "snd-hrtimer: Invalid resolution %u.%09u",
 +			   (unsigned)tp.tv_sec, (unsigned)tp.tv_nsec);
 +		return -EINVAL;
 +	}
 +	resolution = tp.tv_nsec;
 +
 +	/* Create a new timer and set up the fields */
 +	err = snd_timer_global_new("hrtimer", SNDRV_TIMER_GLOBAL_HRTIMER,
 +				   &timer);
 +	if (err < 0)
 +		return err;
 +
 +	timer->module = THIS_MODULE;
 +	strcpy(timer->name, "HR timer");
 +	timer->hw = hrtimer_hw;
 +	timer->hw.resolution = resolution;
 +	timer->hw.ticks = NANO_SEC / resolution;
 +
 +	err = snd_timer_global_register(timer);
 +	if (err < 0) {
 +		snd_timer_global_free(timer);
 +		return err;
 +	}
 +	mytimer = timer; /* remember this */
 +
 +	return 0;
 +}
 +
 +static void __exit snd_hrtimer_exit(void)
 +{
 +	if (mytimer) {
 +		snd_timer_global_free(mytimer);
 +		mytimer = NULL;
 +	}
 +}
 +
 +module_init(snd_hrtimer_init);
 +module_exit(snd_hrtimer_exit);