The delayed registration of sound card instance brings less benefit than complication of kobject management. This commit ceases from it.
Signed-off-by: Takashi Sakamoto o-takashi@sakamocchi.jp --- sound/firewire/tascam/tascam.c | 92 +++++++++++----------------------- sound/firewire/tascam/tascam.h | 2 - 2 files changed, 28 insertions(+), 66 deletions(-)
diff --git a/sound/firewire/tascam/tascam.c b/sound/firewire/tascam/tascam.c index 75f2edd8e78f..eb58d3fcf087 100644 --- a/sound/firewire/tascam/tascam.c +++ b/sound/firewire/tascam/tascam.c @@ -90,19 +90,31 @@ static void tscm_card_free(struct snd_card *card)
snd_tscm_transaction_unregister(tscm); snd_tscm_stream_destroy_duplex(tscm); + + mutex_destroy(&tscm->mutex); + fw_unit_put(tscm->unit); }
-static void do_registration(struct work_struct *work) +static int snd_tscm_probe(struct fw_unit *unit, + const struct ieee1394_device_id *entry) { - struct snd_tscm *tscm = container_of(work, struct snd_tscm, dwork.work); + struct snd_card *card; + struct snd_tscm *tscm; int err;
- err = snd_card_new(&tscm->unit->device, -1, NULL, THIS_MODULE, 0, - &tscm->card); + err = snd_card_new(&unit->device, -1, NULL, THIS_MODULE, sizeof(*tscm), &card); if (err < 0) - return; - tscm->card->private_free = tscm_card_free; - tscm->card->private_data = tscm; + return err; + card->private_free = tscm_card_free; + + tscm = card->private_data; + tscm->unit = fw_unit_get(unit); + dev_set_drvdata(&unit->device, tscm); + tscm->card = card; + + mutex_init(&tscm->mutex); + spin_lock_init(&tscm->lock); + init_waitqueue_head(&tscm->hwdep_wait);
err = identify_model(tscm); if (err < 0) @@ -130,81 +142,33 @@ static void do_registration(struct work_struct *work) if (err < 0) goto error;
- err = snd_card_register(tscm->card); + err = snd_card_register(card); if (err < 0) goto error;
- tscm->registered = true; - - return; -error: - snd_card_free(tscm->card); - dev_info(&tscm->unit->device, - "Sound card registration failed: %d\n", err); -} - -static int snd_tscm_probe(struct fw_unit *unit, - const struct ieee1394_device_id *entry) -{ - struct snd_tscm *tscm; - - /* Allocate this independent of sound card instance. */ - tscm = devm_kzalloc(&unit->device, sizeof(struct snd_tscm), GFP_KERNEL); - if (!tscm) - return -ENOMEM; - tscm->unit = fw_unit_get(unit); - dev_set_drvdata(&unit->device, tscm); - - mutex_init(&tscm->mutex); - spin_lock_init(&tscm->lock); - init_waitqueue_head(&tscm->hwdep_wait); - - /* Allocate and register this sound card later. */ - INIT_DEFERRABLE_WORK(&tscm->dwork, do_registration); - snd_fw_schedule_registration(unit, &tscm->dwork); - return 0; +error: + snd_card_free(card); + return err; }
static void snd_tscm_update(struct fw_unit *unit) { struct snd_tscm *tscm = dev_get_drvdata(&unit->device);
- /* Postpone a workqueue for deferred registration. */ - if (!tscm->registered) - snd_fw_schedule_registration(unit, &tscm->dwork); - snd_tscm_transaction_reregister(tscm);
- /* - * After registration, userspace can start packet streaming, then this - * code block works fine. - */ - if (tscm->registered) { - mutex_lock(&tscm->mutex); - snd_tscm_stream_update_duplex(tscm); - mutex_unlock(&tscm->mutex); - } + mutex_lock(&tscm->mutex); + snd_tscm_stream_update_duplex(tscm); + mutex_unlock(&tscm->mutex); }
static void snd_tscm_remove(struct fw_unit *unit) { struct snd_tscm *tscm = dev_get_drvdata(&unit->device);
- /* - * Confirm to stop the work for registration before the sound card is - * going to be released. The work is not scheduled again because bus - * reset handler is not called anymore. - */ - cancel_delayed_work_sync(&tscm->dwork); - - if (tscm->registered) { - // Block till all of ALSA character devices are released. - snd_card_free(tscm->card); - } - - mutex_destroy(&tscm->mutex); - fw_unit_put(tscm->unit); + // Block till all of ALSA character devices are released. + snd_card_free(tscm->card); }
static const struct ieee1394_device_id snd_tscm_id_table[] = { diff --git a/sound/firewire/tascam/tascam.h b/sound/firewire/tascam/tascam.h index 28dad4eae9c9..d07ffcb27be6 100644 --- a/sound/firewire/tascam/tascam.h +++ b/sound/firewire/tascam/tascam.h @@ -70,8 +70,6 @@ struct snd_tscm { struct mutex mutex; spinlock_t lock;
- bool registered; - struct delayed_work dwork; const struct snd_tscm_spec *spec;
struct fw_iso_resources tx_resources;