Subject: ALSA: seq: Remove autoload locks in driver registration
Since we're calling request_module() asynchronously now, we can get rid of the autoload lock in snd_seq_device_register_driver(), as well as in the snd-seq driver registration itself. This enables the automatic loading of dependent sequencer modules, such as snd-seq-virmidi from snd-emu10k1-synth. Signed-off-by: Takashi Iwai <tiwai@suse.de>
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@ -86,7 +86,6 @@ static int __init alsa_seq_init(void)
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{
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int err;
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snd_seq_autoload_lock();
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if ((err = client_init_data()) < 0)
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goto error;
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@ -112,7 +111,6 @@ static int __init alsa_seq_init(void)
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snd_seq_autoload_init();
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error:
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snd_seq_autoload_unlock();
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return err;
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}
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@ -360,16 +360,12 @@ int snd_seq_device_register_driver(char *id, struct snd_seq_dev_ops *entry,
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entry->init_device == NULL || entry->free_device == NULL)
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return -EINVAL;
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snd_seq_autoload_lock();
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ops = find_driver(id, 1);
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if (ops == NULL) {
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snd_seq_autoload_unlock();
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if (ops == NULL)
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return -ENOMEM;
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}
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if (ops->driver & DRIVER_LOADED) {
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pr_warn("ALSA: seq: driver_register: driver '%s' already exists\n", id);
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unlock_driver(ops);
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snd_seq_autoload_unlock();
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return -EBUSY;
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}
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@ -386,7 +382,6 @@ int snd_seq_device_register_driver(char *id, struct snd_seq_dev_ops *entry,
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mutex_unlock(&ops->reg_mutex);
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unlock_driver(ops);
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snd_seq_autoload_unlock();
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return 0;
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}
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