21 	struct snd_oxfw *oxfw = hwdep->private_data;  in hwdep_read()  local
25 	spin_lock_irq(&oxfw->lock);  in hwdep_read()
27 	while (!oxfw->dev_lock_changed) {  in hwdep_read()
28 		prepare_to_wait(&oxfw->hwdep_wait, &wait, TASK_INTERRUPTIBLE);  in hwdep_read()
29 		spin_unlock_irq(&oxfw->lock);  in hwdep_read()
31 		finish_wait(&oxfw->hwdep_wait, &wait);  in hwdep_read()
34 		spin_lock_irq(&oxfw->lock);  in hwdep_read()
39 	event.lock_status.status = (oxfw->dev_lock_count > 0);  in hwdep_read()
40 	oxfw->dev_lock_changed = false;  in hwdep_read()
44 	spin_unlock_irq(&oxfw->lock);  in hwdep_read()
55 	struct snd_oxfw *oxfw = hwdep->private_data;  in hwdep_poll()  local
58 	poll_wait(file, &oxfw->hwdep_wait, wait);  in hwdep_poll()
60 	spin_lock_irq(&oxfw->lock);  in hwdep_poll()
61 	if (oxfw->dev_lock_changed)  in hwdep_poll()
65 	spin_unlock_irq(&oxfw->lock);  in hwdep_poll()
70 static int hwdep_get_info(struct snd_oxfw *oxfw, void __user *arg)  in hwdep_get_info()  argument
72 	struct fw_device *dev = fw_parent_device(oxfw->unit);  in hwdep_get_info()
89 static int hwdep_lock(struct snd_oxfw *oxfw)  in hwdep_lock()  argument
93 	spin_lock_irq(&oxfw->lock);  in hwdep_lock()
95 	if (oxfw->dev_lock_count == 0) {  in hwdep_lock()
96 		oxfw->dev_lock_count = -1;  in hwdep_lock()
102 	spin_unlock_irq(&oxfw->lock);  in hwdep_lock()
107 static int hwdep_unlock(struct snd_oxfw *oxfw)  in hwdep_unlock()  argument
111 	spin_lock_irq(&oxfw->lock);  in hwdep_unlock()
113 	if (oxfw->dev_lock_count == -1) {  in hwdep_unlock()
114 		oxfw->dev_lock_count = 0;  in hwdep_unlock()
120 	spin_unlock_irq(&oxfw->lock);  in hwdep_unlock()
127 	struct snd_oxfw *oxfw = hwdep->private_data;  in hwdep_release()  local
129 	spin_lock_irq(&oxfw->lock);  in hwdep_release()
130 	if (oxfw->dev_lock_count == -1)  in hwdep_release()
131 		oxfw->dev_lock_count = 0;  in hwdep_release()
132 	spin_unlock_irq(&oxfw->lock);  in hwdep_release()
140 	struct snd_oxfw *oxfw = hwdep->private_data;  in hwdep_ioctl()  local
144 		return hwdep_get_info(oxfw, (void __user *)arg);  in hwdep_ioctl()
146 		return hwdep_lock(oxfw);  in hwdep_ioctl()
148 		return hwdep_unlock(oxfw);  in hwdep_ioctl()
165 int snd_oxfw_create_hwdep(struct snd_oxfw *oxfw)  in snd_oxfw_create_hwdep()  argument
177 	err = snd_hwdep_new(oxfw->card, oxfw->card->driver, 0, &hwdep);  in snd_oxfw_create_hwdep()
180 	strcpy(hwdep->name, oxfw->card->driver);  in snd_oxfw_create_hwdep()
183 	hwdep->private_data = oxfw;  in snd_oxfw_create_hwdep()