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/fireworks/fireworks.c | 107 +++++++++------------------ sound/firewire/fireworks/fireworks.h | 3 - 2 files changed, 33 insertions(+), 77 deletions(-)
diff --git a/sound/firewire/fireworks/fireworks.c b/sound/firewire/fireworks/fireworks.c index b1cc013a3540..865dac3b37e6 100644 --- a/sound/firewire/fireworks/fireworks.c +++ b/sound/firewire/fireworks/fireworks.c @@ -194,19 +194,19 @@ efw_card_free(struct snd_card *card)
snd_efw_stream_destroy_duplex(efw); snd_efw_transaction_remove_instance(efw); + + mutex_destroy(&efw->mutex); + fw_unit_put(efw->unit); }
-static void -do_registration(struct work_struct *work) +static int efw_probe(struct fw_unit *unit, const struct ieee1394_device_id *entry) { - struct snd_efw *efw = container_of(work, struct snd_efw, dwork.work); unsigned int card_index; + struct snd_card *card; + struct snd_efw *efw; int err;
- if (efw->registered) - return; - - /* check registered cards */ + // check registered cards. mutex_lock(&devices_mutex); for (card_index = 0; card_index < SNDRV_CARDS; ++card_index) { if (!test_bit(card_index, devices_used) && enable[card_index]) @@ -214,26 +214,32 @@ do_registration(struct work_struct *work) } if (card_index >= SNDRV_CARDS) { mutex_unlock(&devices_mutex); - return; + return -ENOENT; }
- err = snd_card_new(&efw->unit->device, index[card_index], - id[card_index], THIS_MODULE, 0, &efw->card); + err = snd_card_new(&unit->device, index[card_index], id[card_index], THIS_MODULE, + sizeof(*efw), &card); if (err < 0) { mutex_unlock(&devices_mutex); - return; + return err; } + card->private_free = efw_card_free; set_bit(card_index, devices_used); mutex_unlock(&devices_mutex);
- efw->card->private_free = efw_card_free; - efw->card->private_data = efw; + efw = card->private_data; + efw->unit = fw_unit_get(unit); + dev_set_drvdata(&unit->device, efw); + efw->card = card; + efw->card_index = card_index; + + mutex_init(&efw->mutex); + spin_lock_init(&efw->lock); + init_waitqueue_head(&efw->hwdep_wait);
- /* prepare response buffer */ - snd_efw_resp_buf_size = clamp(snd_efw_resp_buf_size, - SND_EFW_RESPONSE_MAXIMUM_BYTES, 4096U); - efw->resp_buf = devm_kzalloc(&efw->card->card_dev, - snd_efw_resp_buf_size, GFP_KERNEL); + // prepare response buffer. + snd_efw_resp_buf_size = clamp(snd_efw_resp_buf_size, SND_EFW_RESPONSE_MAXIMUM_BYTES, 4096U); + efw->resp_buf = devm_kzalloc(&card->card_dev, snd_efw_resp_buf_size, GFP_KERNEL); if (!efw->resp_buf) { err = -ENOMEM; goto error; @@ -265,80 +271,33 @@ do_registration(struct work_struct *work) if (err < 0) goto error;
- err = snd_card_register(efw->card); + err = snd_card_register(card); if (err < 0) goto error;
- efw->registered = true; - - return; -error: - snd_card_free(efw->card); - dev_info(&efw->unit->device, - "Sound card registration failed: %d\n", err); -} - -static int -efw_probe(struct fw_unit *unit, const struct ieee1394_device_id *entry) -{ - struct snd_efw *efw; - - efw = devm_kzalloc(&unit->device, sizeof(struct snd_efw), GFP_KERNEL); - if (efw == NULL) - return -ENOMEM; - efw->unit = fw_unit_get(unit); - dev_set_drvdata(&unit->device, efw); - - mutex_init(&efw->mutex); - spin_lock_init(&efw->lock); - init_waitqueue_head(&efw->hwdep_wait); - - /* Allocate and register this sound card later. */ - INIT_DEFERRABLE_WORK(&efw->dwork, do_registration); - snd_fw_schedule_registration(unit, &efw->dwork); - return 0; +error: + snd_card_free(card); + return err; }
static void efw_update(struct fw_unit *unit) { struct snd_efw *efw = dev_get_drvdata(&unit->device);
- /* Postpone a workqueue for deferred registration. */ - if (!efw->registered) - snd_fw_schedule_registration(unit, &efw->dwork); - snd_efw_transaction_bus_reset(efw->unit);
- /* - * After registration, userspace can start packet streaming, then this - * code block works fine. - */ - if (efw->registered) { - mutex_lock(&efw->mutex); - snd_efw_stream_update_duplex(efw); - mutex_unlock(&efw->mutex); - } + mutex_lock(&efw->mutex); + snd_efw_stream_update_duplex(efw); + mutex_unlock(&efw->mutex); }
static void efw_remove(struct fw_unit *unit) { struct snd_efw *efw = 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(&efw->dwork); - - if (efw->registered) { - // Block till all of ALSA character devices are released. - snd_card_free(efw->card); - } - - mutex_destroy(&efw->mutex); - fw_unit_put(efw->unit); + // Block till all of ALSA character devices are released. + snd_card_free(efw->card); }
static const struct ieee1394_device_id efw_id_table[] = { diff --git a/sound/firewire/fireworks/fireworks.h b/sound/firewire/fireworks/fireworks.h index 49e12cf7c0e3..2c0c7de8b824 100644 --- a/sound/firewire/fireworks/fireworks.h +++ b/sound/firewire/fireworks/fireworks.h @@ -65,9 +65,6 @@ struct snd_efw { struct mutex mutex; spinlock_t lock;
- bool registered; - struct delayed_work dwork; - /* for transaction */ u32 seqnum; bool resp_addr_changable;