22 	struct snd_motu *motu = hwdep->private_data;  in hwdep_read()  local
26 	spin_lock_irq(&motu->lock);  in hwdep_read()
28 	while (!motu->dev_lock_changed && motu->msg == 0) {  in hwdep_read()
29 		prepare_to_wait(&motu->hwdep_wait, &wait, TASK_INTERRUPTIBLE);  in hwdep_read()
30 		spin_unlock_irq(&motu->lock);  in hwdep_read()
32 		finish_wait(&motu->hwdep_wait, &wait);  in hwdep_read()
35 		spin_lock_irq(&motu->lock);  in hwdep_read()
39 	if (motu->dev_lock_changed) {  in hwdep_read()
41 		event.lock_status.status = (motu->dev_lock_count > 0);  in hwdep_read()
42 		motu->dev_lock_changed = false;  in hwdep_read()
47 		event.motu_notification.message = motu->msg;  in hwdep_read()
48 		motu->msg = 0;  in hwdep_read()
53 	spin_unlock_irq(&motu->lock);  in hwdep_read()
64 	struct snd_motu *motu = hwdep->private_data;  in hwdep_poll()  local
67 	poll_wait(file, &motu->hwdep_wait, wait);  in hwdep_poll()
69 	spin_lock_irq(&motu->lock);  in hwdep_poll()
70 	if (motu->dev_lock_changed || motu->msg)  in hwdep_poll()
74 	spin_unlock_irq(&motu->lock);  in hwdep_poll()
79 static int hwdep_get_info(struct snd_motu *motu, void __user *arg)  in hwdep_get_info()  argument
81 	struct fw_device *dev = fw_parent_device(motu->unit);  in hwdep_get_info()
98 static int hwdep_lock(struct snd_motu *motu)  in hwdep_lock()  argument
102 	spin_lock_irq(&motu->lock);  in hwdep_lock()
104 	if (motu->dev_lock_count == 0) {  in hwdep_lock()
105 		motu->dev_lock_count = -1;  in hwdep_lock()
111 	spin_unlock_irq(&motu->lock);  in hwdep_lock()
116 static int hwdep_unlock(struct snd_motu *motu)  in hwdep_unlock()  argument
120 	spin_lock_irq(&motu->lock);  in hwdep_unlock()
122 	if (motu->dev_lock_count == -1) {  in hwdep_unlock()
123 		motu->dev_lock_count = 0;  in hwdep_unlock()
129 	spin_unlock_irq(&motu->lock);  in hwdep_unlock()
136 	struct snd_motu *motu = hwdep->private_data;  in hwdep_release()  local
138 	spin_lock_irq(&motu->lock);  in hwdep_release()
139 	if (motu->dev_lock_count == -1)  in hwdep_release()
140 		motu->dev_lock_count = 0;  in hwdep_release()
141 	spin_unlock_irq(&motu->lock);  in hwdep_release()
149 	struct snd_motu *motu = hwdep->private_data;  in hwdep_ioctl()  local
153 		return hwdep_get_info(motu, (void __user *)arg);  in hwdep_ioctl()
155 		return hwdep_lock(motu);  in hwdep_ioctl()
157 		return hwdep_unlock(motu);  in hwdep_ioctl()
174 int snd_motu_create_hwdep_device(struct snd_motu *motu)  in snd_motu_create_hwdep_device()  argument
186 	err = snd_hwdep_new(motu->card, motu->card->driver, 0, &hwdep);  in snd_motu_create_hwdep_device()
193 	hwdep->private_data = motu;  in snd_motu_create_hwdep_device()