Commit 647808a6 authored by Takashi Iwai's avatar Takashi Iwai
Browse files

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: default avatarTakashi Iwai <tiwai@suse.de>
parent e78a37bc

sound/core/hrtimer.c

+19 −2
Original line number Diff line number Diff line 
/*

 * 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;

}