15 	struct snd_dice *dice = hwdep->private_data;  in hwdep_read()  local
19 	spin_lock_irq(&dice->lock);  in hwdep_read()
21 	while (!dice->dev_lock_changed && dice->notification_bits == 0) {  in hwdep_read()
22 		prepare_to_wait(&dice->hwdep_wait, &wait, TASK_INTERRUPTIBLE);  in hwdep_read()
23 		spin_unlock_irq(&dice->lock);  in hwdep_read()
25 		finish_wait(&dice->hwdep_wait, &wait);  in hwdep_read()
28 		spin_lock_irq(&dice->lock);  in hwdep_read()
32 	if (dice->dev_lock_changed) {  in hwdep_read()
34 		event.lock_status.status = dice->dev_lock_count > 0;  in hwdep_read()
35 		dice->dev_lock_changed = false;  in hwdep_read()
41 		event.dice_notification.notification = dice->notification_bits;  in hwdep_read()
42 		dice->notification_bits = 0;  in hwdep_read()
47 	spin_unlock_irq(&dice->lock);  in hwdep_read()
58 	struct snd_dice *dice = hwdep->private_data;  in hwdep_poll()  local
61 	poll_wait(file, &dice->hwdep_wait, wait);  in hwdep_poll()
63 	spin_lock_irq(&dice->lock);  in hwdep_poll()
64 	if (dice->dev_lock_changed || dice->notification_bits != 0)  in hwdep_poll()
68 	spin_unlock_irq(&dice->lock);  in hwdep_poll()
73 static int hwdep_get_info(struct snd_dice *dice, void __user *arg)  in hwdep_get_info()  argument
75 	struct fw_device *dev = fw_parent_device(dice->unit);  in hwdep_get_info()
92 static int hwdep_lock(struct snd_dice *dice)  in hwdep_lock()  argument
96 	spin_lock_irq(&dice->lock);  in hwdep_lock()
98 	if (dice->dev_lock_count == 0) {  in hwdep_lock()
99 		dice->dev_lock_count = -1;  in hwdep_lock()
105 	spin_unlock_irq(&dice->lock);  in hwdep_lock()
110 static int hwdep_unlock(struct snd_dice *dice)  in hwdep_unlock()  argument
114 	spin_lock_irq(&dice->lock);  in hwdep_unlock()
116 	if (dice->dev_lock_count == -1) {  in hwdep_unlock()
117 		dice->dev_lock_count = 0;  in hwdep_unlock()
123 	spin_unlock_irq(&dice->lock);  in hwdep_unlock()
130 	struct snd_dice *dice = hwdep->private_data;  in hwdep_release()  local
132 	spin_lock_irq(&dice->lock);  in hwdep_release()
133 	if (dice->dev_lock_count == -1)  in hwdep_release()
134 		dice->dev_lock_count = 0;  in hwdep_release()
135 	spin_unlock_irq(&dice->lock);  in hwdep_release()
143 	struct snd_dice *dice = hwdep->private_data;  in hwdep_ioctl()  local
147 		return hwdep_get_info(dice, (void __user *)arg);  in hwdep_ioctl()
149 		return hwdep_lock(dice);  in hwdep_ioctl()
151 		return hwdep_unlock(dice);  in hwdep_ioctl()
168 int snd_dice_create_hwdep(struct snd_dice *dice)  in snd_dice_create_hwdep()  argument
180 	err = snd_hwdep_new(dice->card, "DICE", 0, &hwdep);  in snd_dice_create_hwdep()
186 	hwdep->private_data = dice;  in snd_dice_create_hwdep()