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| author | Takashi Iwai <tiwai@suse.de> | 2015-01-29 18:09:05 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2015-02-02 14:42:44 +0100 |
| commit | 7c35860d1ae555a040f561c7cfdde066053787f0 (patch) | |
| tree | 734792b3d4c9efb5da4ce73aba97cca0d02d672a | |
| parent | 07cc3e8bd57cd9d9f8f30c30ed859a55a7d8f4d3 (diff) | |
| download | linux-7c35860d1ae555a040f561c7cfdde066053787f0.tar.bz2 | |
ALSA: timer: Propagate the error at initialization
... instead of just printing errors.
Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
| -rw-r--r-- | sound/core/timer.c | 32 |
1 files changed, 22 insertions, 10 deletions
diff --git a/sound/core/timer.c b/sound/core/timer.c index 777a45e08e53..28b673d4f812 100644 --- a/sound/core/timer.c +++ b/sound/core/timer.c @@ -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); |