22 	struct snd_dg00x *dg00x = hwdep->private_data;  in hwdep_read()  local
26 	spin_lock_irq(&dg00x->lock);  in hwdep_read()
28 	while (!dg00x->dev_lock_changed && dg00x->msg == 0) {  in hwdep_read()
29 		prepare_to_wait(&dg00x->hwdep_wait, &wait, TASK_INTERRUPTIBLE);  in hwdep_read()
30 		spin_unlock_irq(&dg00x->lock);  in hwdep_read()
32 		finish_wait(&dg00x->hwdep_wait, &wait);  in hwdep_read()
35 		spin_lock_irq(&dg00x->lock);  in hwdep_read()
39 	if (dg00x->dev_lock_changed) {  in hwdep_read()
41 		event.lock_status.status = (dg00x->dev_lock_count > 0);  in hwdep_read()
42 		dg00x->dev_lock_changed = false;  in hwdep_read()
48 		event.digi00x_message.message = dg00x->msg;  in hwdep_read()
49 		dg00x->msg = 0;  in hwdep_read()
54 	spin_unlock_irq(&dg00x->lock);  in hwdep_read()
65 	struct snd_dg00x *dg00x = hwdep->private_data;  in hwdep_poll()  local
68 	poll_wait(file, &dg00x->hwdep_wait, wait);  in hwdep_poll()
70 	spin_lock_irq(&dg00x->lock);  in hwdep_poll()
71 	if (dg00x->dev_lock_changed || dg00x->msg)  in hwdep_poll()
75 	spin_unlock_irq(&dg00x->lock);  in hwdep_poll()
80 static int hwdep_get_info(struct snd_dg00x *dg00x, void __user *arg)  in hwdep_get_info()  argument
82 	struct fw_device *dev = fw_parent_device(dg00x->unit);  in hwdep_get_info()
99 static int hwdep_lock(struct snd_dg00x *dg00x)  in hwdep_lock()  argument
103 	spin_lock_irq(&dg00x->lock);  in hwdep_lock()
105 	if (dg00x->dev_lock_count == 0) {  in hwdep_lock()
106 		dg00x->dev_lock_count = -1;  in hwdep_lock()
112 	spin_unlock_irq(&dg00x->lock);  in hwdep_lock()
117 static int hwdep_unlock(struct snd_dg00x *dg00x)  in hwdep_unlock()  argument
121 	spin_lock_irq(&dg00x->lock);  in hwdep_unlock()
123 	if (dg00x->dev_lock_count == -1) {  in hwdep_unlock()
124 		dg00x->dev_lock_count = 0;  in hwdep_unlock()
130 	spin_unlock_irq(&dg00x->lock);  in hwdep_unlock()
137 	struct snd_dg00x *dg00x = hwdep->private_data;  in hwdep_release()  local
139 	spin_lock_irq(&dg00x->lock);  in hwdep_release()
140 	if (dg00x->dev_lock_count == -1)  in hwdep_release()
141 		dg00x->dev_lock_count = 0;  in hwdep_release()
142 	spin_unlock_irq(&dg00x->lock);  in hwdep_release()
150 	struct snd_dg00x *dg00x = hwdep->private_data;  in hwdep_ioctl()  local
154 		return hwdep_get_info(dg00x, (void __user *)arg);  in hwdep_ioctl()
156 		return hwdep_lock(dg00x);  in hwdep_ioctl()
158 		return hwdep_unlock(dg00x);  in hwdep_ioctl()
175 int snd_dg00x_create_hwdep_device(struct snd_dg00x *dg00x)  in snd_dg00x_create_hwdep_device()  argument
187 	err = snd_hwdep_new(dg00x->card, "Digi00x", 0, &hwdep);  in snd_dg00x_create_hwdep_device()
194 	hwdep->private_data = dg00x;  in snd_dg00x_create_hwdep_device()