diff options
Diffstat (limited to 'sound/firewire/dice')
-rw-r--r-- | sound/firewire/dice/dice-stream.c | 18 | ||||
-rw-r--r-- | sound/firewire/dice/dice.c | 16 |
2 files changed, 23 insertions, 11 deletions
diff --git a/sound/firewire/dice/dice-stream.c b/sound/firewire/dice/dice-stream.c index fa9cf761b610..07dbd01d7a6b 100644 --- a/sound/firewire/dice/dice-stream.c +++ b/sound/firewire/dice/dice-stream.c @@ -311,14 +311,21 @@ end: return err; } +/* + * This function should be called before starting streams or after stopping + * streams. + */ static void destroy_stream(struct snd_dice *dice, struct amdtp_stream *stream) { - amdtp_stream_destroy(stream); + struct fw_iso_resources *resources; if (stream == &dice->tx_stream) - fw_iso_resources_destroy(&dice->tx_resources); + resources = &dice->tx_resources; else - fw_iso_resources_destroy(&dice->rx_resources); + resources = &dice->rx_resources; + + amdtp_stream_destroy(stream); + fw_iso_resources_destroy(resources); } int snd_dice_stream_init_duplex(struct snd_dice *dice) @@ -332,6 +339,8 @@ int snd_dice_stream_init_duplex(struct snd_dice *dice) goto end; err = init_stream(dice, &dice->rx_stream); + if (err < 0) + destroy_stream(dice, &dice->tx_stream); end: return err; } @@ -340,10 +349,7 @@ void snd_dice_stream_destroy_duplex(struct snd_dice *dice) { snd_dice_transaction_clear_enable(dice); - stop_stream(dice, &dice->tx_stream); destroy_stream(dice, &dice->tx_stream); - - stop_stream(dice, &dice->rx_stream); destroy_stream(dice, &dice->rx_stream); dice->substreams_counter = 0; diff --git a/sound/firewire/dice/dice.c b/sound/firewire/dice/dice.c index 90d8f40ff727..70a111d7f428 100644 --- a/sound/firewire/dice/dice.c +++ b/sound/firewire/dice/dice.c @@ -226,11 +226,20 @@ static void dice_card_strings(struct snd_dice *dice) strcpy(card->mixername, "DICE"); } +/* + * This module releases the FireWire unit data after all ALSA character devices + * are released by applications. This is for releasing stream data or finishing + * transactions safely. Thus at returning from .remove(), this module still keep + * references for the unit. + */ static void dice_card_free(struct snd_card *card) { struct snd_dice *dice = card->private_data; + snd_dice_stream_destroy_duplex(dice); snd_dice_transaction_destroy(dice); + fw_unit_put(dice->unit); + mutex_destroy(&dice->mutex); } @@ -251,7 +260,7 @@ static int dice_probe(struct fw_unit *unit, const struct ieee1394_device_id *id) dice = card->private_data; dice->card = card; - dice->unit = unit; + dice->unit = fw_unit_get(unit); card->private_free = dice_card_free; spin_lock_init(&dice->lock); @@ -305,10 +314,7 @@ static void dice_remove(struct fw_unit *unit) { struct snd_dice *dice = dev_get_drvdata(&unit->device); - snd_card_disconnect(dice->card); - - snd_dice_stream_destroy_duplex(dice); - + /* No need to wait for releasing card object in this context. */ snd_card_free_when_closed(dice->card); } |