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ALSA: timer - Add comments and use ns_to_ktime() 

Add the license and misc comments at the beginning of the code.
Also, use ns_to_ktime() for simplification.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
hifive-unleashed-5.1
Takashi Iwai 2008-12-08 12:16:58 +01:00
parent e78a37bc77
commit 647808a6b9
1 changed files with 19 additions and 2 deletions
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21
sound/core/hrtimer.c
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@ -1,4 +1,21 @@
/*
* 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>
@ -26,7 +43,7 @@ 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, ktime_set(0, t->sticks * resolution));
hrtimer_forward_now(hrt, ns_to_ktime(t->sticks * resolution));
snd_timer_interrupt(stime->timer, t->sticks);
return HRTIMER_RESTART;
}
@ -62,7 +79,7 @@ static int snd_hrtimer_start(struct snd_timer *t)
{
struct snd_hrtimer *stime = t->private_data;
hrtimer_start(&stime->hrt, ktime_set(0, t->sticks * resolution),
hrtimer_start(&stime->hrt, ns_to_ktime(t->sticks * resolution),
HRTIMER_MODE_REL);
return 0;
}