23 hwdep_read_resp_buf(struct snd_efw *efw, char __user *buf, long remained,  in hwdep_read_resp_buf()  argument
41 	while (efw->resp_queues > 0) {  in hwdep_read_resp_buf()
42 		t = (struct snd_efw_transaction *)(efw->pull_ptr);  in hwdep_read_resp_buf()
52 				(unsigned int)(efw->pull_ptr - efw->resp_buf);  in hwdep_read_resp_buf()
55 			if (copy_to_user(buf, efw->pull_ptr, till_end))  in hwdep_read_resp_buf()
58 			efw->pull_ptr += till_end;  in hwdep_read_resp_buf()
59 			if (efw->pull_ptr >= efw->resp_buf +  in hwdep_read_resp_buf()
61 				efw->pull_ptr -= snd_efw_resp_buf_size;  in hwdep_read_resp_buf()
69 		efw->resp_queues--;  in hwdep_read_resp_buf()
76 hwdep_read_locked(struct snd_efw *efw, char __user *buf, long count,  in hwdep_read_locked()  argument
84 	event.lock_status.status = (efw->dev_lock_count > 0);  in hwdep_read_locked()
85 	efw->dev_lock_changed = false;  in hwdep_read_locked()
99 	struct snd_efw *efw = hwdep->private_data;  in hwdep_read()  local
102 	spin_lock_irq(&efw->lock);  in hwdep_read()
104 	while ((!efw->dev_lock_changed) && (efw->resp_queues == 0)) {  in hwdep_read()
105 		prepare_to_wait(&efw->hwdep_wait, &wait, TASK_INTERRUPTIBLE);  in hwdep_read()
106 		spin_unlock_irq(&efw->lock);  in hwdep_read()
108 		finish_wait(&efw->hwdep_wait, &wait);  in hwdep_read()
111 		spin_lock_irq(&efw->lock);  in hwdep_read()
114 	if (efw->dev_lock_changed)  in hwdep_read()
115 		count = hwdep_read_locked(efw, buf, count, offset);  in hwdep_read()
116 	else if (efw->resp_queues > 0)  in hwdep_read()
117 		count = hwdep_read_resp_buf(efw, buf, count, offset);  in hwdep_read()
119 	spin_unlock_irq(&efw->lock);  in hwdep_read()
128 	struct snd_efw *efw = hwdep->private_data;  in hwdep_write()  local
147 	if (snd_efw_transaction_cmd(efw->unit, buf, count) < 0)  in hwdep_write()
157 	struct snd_efw *efw = hwdep->private_data;  in hwdep_poll()  local
160 	poll_wait(file, &efw->hwdep_wait, wait);  in hwdep_poll()
162 	spin_lock_irq(&efw->lock);  in hwdep_poll()
163 	if (efw->dev_lock_changed || (efw->resp_queues > 0))  in hwdep_poll()
167 	spin_unlock_irq(&efw->lock);  in hwdep_poll()
173 hwdep_get_info(struct snd_efw *efw, void __user *arg)  in hwdep_get_info()  argument
175 	struct fw_device *dev = fw_parent_device(efw->unit);  in hwdep_get_info()
193 hwdep_lock(struct snd_efw *efw)  in hwdep_lock()  argument
197 	spin_lock_irq(&efw->lock);  in hwdep_lock()
199 	if (efw->dev_lock_count == 0) {  in hwdep_lock()
200 		efw->dev_lock_count = -1;  in hwdep_lock()
206 	spin_unlock_irq(&efw->lock);  in hwdep_lock()
212 hwdep_unlock(struct snd_efw *efw)  in hwdep_unlock()  argument
216 	spin_lock_irq(&efw->lock);  in hwdep_unlock()
218 	if (efw->dev_lock_count == -1) {  in hwdep_unlock()
219 		efw->dev_lock_count = 0;  in hwdep_unlock()
225 	spin_unlock_irq(&efw->lock);  in hwdep_unlock()
233 	struct snd_efw *efw = hwdep->private_data;  in hwdep_release()  local
235 	spin_lock_irq(&efw->lock);  in hwdep_release()
236 	if (efw->dev_lock_count == -1)  in hwdep_release()
237 		efw->dev_lock_count = 0;  in hwdep_release()
238 	spin_unlock_irq(&efw->lock);  in hwdep_release()
247 	struct snd_efw *efw = hwdep->private_data;  in hwdep_ioctl()  local
251 		return hwdep_get_info(efw, (void __user *)arg);  in hwdep_ioctl()
253 		return hwdep_lock(efw);  in hwdep_ioctl()
255 		return hwdep_unlock(efw);  in hwdep_ioctl()
282 int snd_efw_create_hwdep_device(struct snd_efw *efw)  in snd_efw_create_hwdep_device()  argument
287 	err = snd_hwdep_new(efw->card, "Fireworks", 0, &hwdep);  in snd_efw_create_hwdep_device()
293 	hwdep->private_data = efw;  in snd_efw_create_hwdep_device()