diff options
| author | Jaroslav Kysela <perex@perex.cz> | 2009-11-03 16:29:50 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2009-11-16 13:35:00 +0300 |
| commit | 13dab0808bb41b18888e1758a060a685deee1f30 (patch) | |
| tree | 3d0828a0c537d9ba9934562631816a4671a3bf56 /sound/pci/hda/hda_beep.c | |
| parent | 123c07aeddd71fbb295842a8c19866e780b9a100 (diff) | |
| download | linux-13dab0808bb41b18888e1758a060a685deee1f30.tar.xz | |
ALSA: hda_intel: Digital PC Beep - delay input device unregistration
The massive register/unregister calls for input device layer might be
overkill. Delay unregister call by one HZ as workaround.
Also, as benefit, beep->enabled variable is changed immediately now
(not from workqueue).
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/hda/hda_beep.c')
| -rw-r--r-- | sound/pci/hda/hda_beep.c | 42 |
1 files changed, 27 insertions, 15 deletions
diff --git a/sound/pci/hda/hda_beep.c b/sound/pci/hda/hda_beep.c index 0e986537d570..74db40edb336 100644 --- a/sound/pci/hda/hda_beep.c +++ b/sound/pci/hda/hda_beep.c @@ -164,20 +164,21 @@ static void snd_hda_do_register(struct work_struct *work) { struct hda_beep *beep = container_of(work, struct hda_beep, register_work); - int request; mutex_lock(&beep->mutex); - request = beep->request_enable; - if (beep->enabled != request) { - if (!request) { - snd_hda_do_detach(beep); - } else { - if (snd_hda_do_attach(beep) < 0) - goto __out; - } - beep->enabled = request; - } - __out: + if (beep->enabled && !beep->dev) + snd_hda_do_attach(beep); + mutex_unlock(&beep->mutex); +} + +static void snd_hda_do_unregister(struct work_struct *work) +{ + struct hda_beep *beep = + container_of(work, struct hda_beep, unregister_work.work); + + mutex_lock(&beep->mutex); + if (!beep->enabled && beep->dev) + snd_hda_do_detach(beep); mutex_unlock(&beep->mutex); } @@ -185,9 +186,19 @@ int snd_hda_enable_beep_device(struct hda_codec *codec, int enable) { struct hda_beep *beep = codec->beep; enable = !!enable; - if (beep && beep->enabled != enable) { - beep->request_enable = enable; - schedule_work(&beep->register_work); + if (beep == NULL) + return 0; + if (beep->enabled != enable) { + beep->enabled = enable; + if (enable) { + cancel_delayed_work(&beep->unregister_work); + schedule_work(&beep->register_work); + } else { + /* turn off beep */ + snd_hda_codec_write_cache(beep->codec, beep->nid, 0, + AC_VERB_SET_BEEP_CONTROL, 0); + schedule_delayed_work(&beep->unregister_work, HZ); + } return 1; } return 0; @@ -215,6 +226,7 @@ int snd_hda_attach_beep_device(struct hda_codec *codec, int nid) codec->beep = beep; INIT_WORK(&beep->register_work, &snd_hda_do_register); + INIT_DELAYED_WORK(&beep->unregister_work, &snd_hda_do_unregister); INIT_WORK(&beep->beep_work, &snd_hda_generate_beep); mutex_init(&beep->mutex); |