23 	struct snd_dg00x *dg00x = hwdep->private_data;  in hwdep_read()  local
27 	spin_lock_irq(&dg00x->lock);  in hwdep_read()
29 	while (!dg00x->dev_lock_changed && dg00x->msg == 0) {  in hwdep_read()
30 		prepare_to_wait(&dg00x->hwdep_wait, &wait, TASK_INTERRUPTIBLE);  in hwdep_read()
31 		spin_unlock_irq(&dg00x->lock);  in hwdep_read()
33 		finish_wait(&dg00x->hwdep_wait, &wait);  in hwdep_read()
36 		spin_lock_irq(&dg00x->lock);  in hwdep_read()
40 	if (dg00x->dev_lock_changed) {  in hwdep_read()
42 		event.lock_status.status = (dg00x->dev_lock_count > 0);  in hwdep_read()
43 		dg00x->dev_lock_changed = false;  in hwdep_read()
49 		event.digi00x_message.message = dg00x->msg;  in hwdep_read()
50 		dg00x->msg = 0;  in hwdep_read()
55 	spin_unlock_irq(&dg00x->lock);  in hwdep_read()
66 	struct snd_dg00x *dg00x = hwdep->private_data;  in hwdep_poll()  local
69 	poll_wait(file, &dg00x->hwdep_wait, wait);  in hwdep_poll()
71 	spin_lock_irq(&dg00x->lock);  in hwdep_poll()
72 	if (dg00x->dev_lock_changed || dg00x->msg)  in hwdep_poll()
76 	spin_unlock_irq(&dg00x->lock);  in hwdep_poll()
81 static int hwdep_get_info(struct snd_dg00x *dg00x, void __user *arg)  in hwdep_get_info()  argument
83 	struct fw_device *dev = fw_parent_device(dg00x->unit);  in hwdep_get_info()
100 static int hwdep_lock(struct snd_dg00x *dg00x)  in hwdep_lock()  argument
104 	spin_lock_irq(&dg00x->lock);  in hwdep_lock()
106 	if (dg00x->dev_lock_count == 0) {  in hwdep_lock()
107 		dg00x->dev_lock_count = -1;  in hwdep_lock()
113 	spin_unlock_irq(&dg00x->lock);  in hwdep_lock()
118 static int hwdep_unlock(struct snd_dg00x *dg00x)  in hwdep_unlock()  argument
122 	spin_lock_irq(&dg00x->lock);  in hwdep_unlock()
124 	if (dg00x->dev_lock_count == -1) {  in hwdep_unlock()
125 		dg00x->dev_lock_count = 0;  in hwdep_unlock()
131 	spin_unlock_irq(&dg00x->lock);  in hwdep_unlock()
138 	struct snd_dg00x *dg00x = hwdep->private_data;  in hwdep_release()  local
140 	spin_lock_irq(&dg00x->lock);  in hwdep_release()
141 	if (dg00x->dev_lock_count == -1)  in hwdep_release()
142 		dg00x->dev_lock_count = 0;  in hwdep_release()
143 	spin_unlock_irq(&dg00x->lock);  in hwdep_release()
151 	struct snd_dg00x *dg00x = hwdep->private_data;  in hwdep_ioctl()  local
155 		return hwdep_get_info(dg00x, (void __user *)arg);  in hwdep_ioctl()
157 		return hwdep_lock(dg00x);  in hwdep_ioctl()
159 		return hwdep_unlock(dg00x);  in hwdep_ioctl()
184 int snd_dg00x_create_hwdep_device(struct snd_dg00x *dg00x)  in snd_dg00x_create_hwdep_device()  argument
189 	err = snd_hwdep_new(dg00x->card, "Digi00x", 0, &hwdep);  in snd_dg00x_create_hwdep_device()
196 	hwdep->private_data = dg00x;  in snd_dg00x_create_hwdep_device()