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authorTakashi Sakamoto <o-takashi@sakamocchi.jp>2021-06-07 11:12:48 +0300
committerTakashi Iwai <tiwai@suse.de>2021-06-07 18:14:42 +0300
commita49c6766dfa029856e6ad6e295f7e6d6c75eb94c (patch)
tree6a3af134c01694c5122fcc0496ae31ffb564c43c /sound/firewire
parent7ae2f179a42d7a15a84e238eb1d177ca2c79f954 (diff)
downloadlinux-a49c6766dfa029856e6ad6e295f7e6d6c75eb94c.tar.xz
ALSA: firewire-motu: cease from delayed card registration
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> Link: https://lore.kernel.org/r/20210607081250.13397-8-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/firewire')
-rw-r--r--sound/firewire/motu/motu.c84
-rw-r--r--sound/firewire/motu/motu.h3
2 files changed, 25 insertions, 62 deletions
diff --git a/sound/firewire/motu/motu.c b/sound/firewire/motu/motu.c
index 2a8a6ea2d3f1..531eeb36eb87 100644
--- a/sound/firewire/motu/motu.c
+++ b/sound/firewire/motu/motu.c
@@ -57,22 +57,31 @@ static void motu_card_free(struct snd_card *card)
snd_motu_transaction_unregister(motu);
snd_motu_stream_destroy_duplex(motu);
+
+ mutex_destroy(&motu->mutex);
+ fw_unit_put(motu->unit);
}
-static void do_registration(struct work_struct *work)
+static int motu_probe(struct fw_unit *unit, const struct ieee1394_device_id *entry)
{
- struct snd_motu *motu = container_of(work, struct snd_motu, dwork.work);
+ struct snd_card *card;
+ struct snd_motu *motu;
int err;
- if (motu->registered)
- return;
-
- err = snd_card_new(&motu->unit->device, -1, NULL, THIS_MODULE, 0,
- &motu->card);
+ err = snd_card_new(&unit->device, -1, NULL, THIS_MODULE, sizeof(*motu), &card);
if (err < 0)
- return;
- motu->card->private_free = motu_card_free;
- motu->card->private_data = motu;
+ return err;
+ card->private_free = motu_card_free;
+
+ motu = card->private_data;
+ motu->unit = fw_unit_get(unit);
+ dev_set_drvdata(&unit->device, motu);
+ motu->card = card;
+
+ motu->spec = (const struct snd_motu_spec *)entry->driver_data;
+ mutex_init(&motu->mutex);
+ spin_lock_init(&motu->lock);
+ init_waitqueue_head(&motu->hwdep_wait);
name_card(motu);
@@ -103,71 +112,28 @@ static void do_registration(struct work_struct *work)
if (err < 0)
goto error;
- err = snd_card_register(motu->card);
+ err = snd_card_register(card);
if (err < 0)
goto error;
- motu->registered = true;
-
- return;
-error:
- snd_card_free(motu->card);
- dev_info(&motu->unit->device,
- "Sound card registration failed: %d\n", err);
-}
-
-static int motu_probe(struct fw_unit *unit,
- const struct ieee1394_device_id *entry)
-{
- struct snd_motu *motu;
-
- /* Allocate this independently of sound card instance. */
- motu = devm_kzalloc(&unit->device, sizeof(struct snd_motu), GFP_KERNEL);
- if (!motu)
- return -ENOMEM;
- motu->unit = fw_unit_get(unit);
- dev_set_drvdata(&unit->device, motu);
-
- motu->spec = (const struct snd_motu_spec *)entry->driver_data;
- mutex_init(&motu->mutex);
- spin_lock_init(&motu->lock);
- init_waitqueue_head(&motu->hwdep_wait);
-
- /* Allocate and register this sound card later. */
- INIT_DEFERRABLE_WORK(&motu->dwork, do_registration);
- snd_fw_schedule_registration(unit, &motu->dwork);
-
return 0;
+error:
+ snd_card_free(card);
+ return err;
}
static void motu_remove(struct fw_unit *unit)
{
struct snd_motu *motu = 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(&motu->dwork);
-
- if (motu->registered) {
- // Block till all of ALSA character devices are released.
- snd_card_free(motu->card);
- }
-
- mutex_destroy(&motu->mutex);
- fw_unit_put(motu->unit);
+ // Block till all of ALSA character devices are released.
+ snd_card_free(motu->card);
}
static void motu_bus_update(struct fw_unit *unit)
{
struct snd_motu *motu = dev_get_drvdata(&unit->device);
- /* Postpone a workqueue for deferred registration. */
- if (!motu->registered)
- snd_fw_schedule_registration(unit, &motu->dwork);
-
/* The handler address register becomes initialized. */
snd_motu_transaction_reregister(motu);
}
diff --git a/sound/firewire/motu/motu.h b/sound/firewire/motu/motu.h
index 674e3dc4e45d..c5c0e446deb2 100644
--- a/sound/firewire/motu/motu.h
+++ b/sound/firewire/motu/motu.h
@@ -54,9 +54,6 @@ struct snd_motu {
struct mutex mutex;
spinlock_t lock;
- bool registered;
- struct delayed_work dwork;
-
/* Model dependent information. */
const struct snd_motu_spec *spec;