81 /* dlfb keeps a list of urbs for efficient bulk transfers */
412  * rendering can be done directly to output buffers (e.g. USB URBs).
1750 	/* When non-active we'll update virtual framebuffer, but no new urbs */  in dlfb_usb_disconnect()
1753 	/* this function will wait for all in-flight urbs to complete */  in dlfb_usb_disconnect()
1796 	urb->transfer_buffer_length = dlfb->urbs.size; /* reset to actual */  in dlfb_urb_completion()
1798 	spin_lock_irqsave(&dlfb->urbs.lock, flags);  in dlfb_urb_completion()
1799 	list_add_tail(&unode->entry, &dlfb->urbs.list);  in dlfb_urb_completion()
1800 	dlfb->urbs.available++;  in dlfb_urb_completion()
1801 	spin_unlock_irqrestore(&dlfb->urbs.lock, flags);  in dlfb_urb_completion()
1803 	up(&dlfb->urbs.limit_sem);  in dlfb_urb_completion()
1808 	int count = dlfb->urbs.count;  in dlfb_free_urb_list()
1815 		down(&dlfb->urbs.limit_sem);  in dlfb_free_urb_list()
1817 		spin_lock_irq(&dlfb->urbs.lock);  in dlfb_free_urb_list()
1819 		node = dlfb->urbs.list.next; /* have reserved one with sem */  in dlfb_free_urb_list()
1822 		spin_unlock_irq(&dlfb->urbs.lock);  in dlfb_free_urb_list()
1828 		usb_free_coherent(urb->dev, dlfb->urbs.size,  in dlfb_free_urb_list()
1834 	dlfb->urbs.count = 0;  in dlfb_free_urb_list()
1844 	spin_lock_init(&dlfb->urbs.lock);  in dlfb_alloc_urb_list()
1847 	dlfb->urbs.size = size;  in dlfb_alloc_urb_list()
1848 	INIT_LIST_HEAD(&dlfb->urbs.list);  in dlfb_alloc_urb_list()
1850 	sema_init(&dlfb->urbs.limit_sem, 0);  in dlfb_alloc_urb_list()
1851 	dlfb->urbs.count = 0;  in dlfb_alloc_urb_list()
1852 	dlfb->urbs.available = 0;  in dlfb_alloc_urb_list()
1854 	while (dlfb->urbs.count * size < wanted_size) {  in dlfb_alloc_urb_list()
1886 		list_add_tail(&unode->entry, &dlfb->urbs.list);  in dlfb_alloc_urb_list()
1888 		up(&dlfb->urbs.limit_sem);  in dlfb_alloc_urb_list()
1889 		dlfb->urbs.count++;  in dlfb_alloc_urb_list()
1890 		dlfb->urbs.available++;  in dlfb_alloc_urb_list()
1893 	return dlfb->urbs.count;  in dlfb_alloc_urb_list()
1903 	ret = down_timeout(&dlfb->urbs.limit_sem, GET_URB_TIMEOUT);  in dlfb_get_urb()
1908 			 ret, dlfb->urbs.available);  in dlfb_get_urb()
1912 	spin_lock_irq(&dlfb->urbs.lock);  in dlfb_get_urb()
1914 	BUG_ON(list_empty(&dlfb->urbs.list)); /* reserved one with limit_sem */  in dlfb_get_urb()
1915 	entry = dlfb->urbs.list.next;  in dlfb_get_urb()
1917 	dlfb->urbs.available--;  in dlfb_get_urb()
1919 	spin_unlock_irq(&dlfb->urbs.lock);  in dlfb_get_urb()
1929 	BUG_ON(len > dlfb->urbs.size);  in dlfb_submit_urb()