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ALSA: timer: Propagate the error at initialization

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... instead of just printing errors.

Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2015-01-29 18:09:05 +01:00
parent 07cc3e8bd5
commit 7c35860d1a
1 changed files with 22 additions and 10 deletions
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32
sound/core/timer.c
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@ -1942,6 +1942,15 @@ static const struct file_operations snd_timer_f_ops =
.fasync = snd_timer_user_fasync,
};
/* unregister the system timer */
static void snd_timer_free_all(void)
{
struct snd_timer *timer, *n;
list_for_each_entry_safe(timer, n, &snd_timer_list, device_list)
snd_timer_free(timer);
}
/*
* ENTRY functions
*/
@ -1955,25 +1964,28 @@ static int __init alsa_timer_init(void)
"system timer");
#endif
if ((err = snd_timer_register_system()) < 0)
err = snd_timer_register_system();
if (err < 0) {
pr_err("ALSA: unable to register system timer (%i)\n", err);
if ((err = snd_register_device(SNDRV_DEVICE_TYPE_TIMER, NULL, 0,
&snd_timer_f_ops, NULL, "timer")) < 0)
return err;
}
err = snd_register_device(SNDRV_DEVICE_TYPE_TIMER, NULL, 0,
&snd_timer_f_ops, NULL, "timer");
if (err < 0) {
pr_err("ALSA: unable to register timer device (%i)\n", err);
snd_timer_free_all();
return err;
}
snd_timer_proc_init();
return 0;
}
static void __exit alsa_timer_exit(void)
{
struct list_head *p, *n;
snd_unregister_device(SNDRV_DEVICE_TYPE_TIMER, NULL, 0);
/* unregister the system timer */
list_for_each_safe(p, n, &snd_timer_list) {
struct snd_timer *timer = list_entry(p, struct snd_timer, device_list);
snd_timer_free(timer);
}
snd_timer_free_all();
snd_timer_proc_done();
#ifdef SNDRV_OSS_INFO_DEV_TIMERS
snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_TIMERS, SNDRV_CARDS - 1);