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@xxxxxxxxxxxxx>
---
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;
--
2.27.0
