79 /* dlfb keeps a list of urbs for efficient bulk transfers */
405  * rendering can be done directly to output buffers (e.g. USB URBs).
1798 	/* When non-active we'll update virtual framebuffer, but no new urbs */  in dlfb_usb_disconnect()
1801 	/* this function will wait for all in-flight urbs to complete */  in dlfb_usb_disconnect()
1844 	urb->transfer_buffer_length = dlfb->urbs.size; /* reset to actual */  in dlfb_urb_completion()
1846 	spin_lock_irqsave(&dlfb->urbs.lock, flags);  in dlfb_urb_completion()
1847 	list_add_tail(&unode->entry, &dlfb->urbs.list);  in dlfb_urb_completion()
1848 	dlfb->urbs.available++;  in dlfb_urb_completion()
1849 	spin_unlock_irqrestore(&dlfb->urbs.lock, flags);  in dlfb_urb_completion()
1851 	up(&dlfb->urbs.limit_sem);  in dlfb_urb_completion()
1856 	int count = dlfb->urbs.count;  in dlfb_free_urb_list()
1863 		down(&dlfb->urbs.limit_sem);  in dlfb_free_urb_list()
1865 		spin_lock_irq(&dlfb->urbs.lock);  in dlfb_free_urb_list()
1867 		node = dlfb->urbs.list.next; /* have reserved one with sem */  in dlfb_free_urb_list()
1870 		spin_unlock_irq(&dlfb->urbs.lock);  in dlfb_free_urb_list()
1876 		usb_free_coherent(urb->dev, dlfb->urbs.size,  in dlfb_free_urb_list()
1882 	dlfb->urbs.count = 0;  in dlfb_free_urb_list()
1892 	spin_lock_init(&dlfb->urbs.lock);  in dlfb_alloc_urb_list()
1895 	dlfb->urbs.size = size;  in dlfb_alloc_urb_list()
1896 	INIT_LIST_HEAD(&dlfb->urbs.list);  in dlfb_alloc_urb_list()
1898 	sema_init(&dlfb->urbs.limit_sem, 0);  in dlfb_alloc_urb_list()
1899 	dlfb->urbs.count = 0;  in dlfb_alloc_urb_list()
1900 	dlfb->urbs.available = 0;  in dlfb_alloc_urb_list()
1902 	while (dlfb->urbs.count * size < wanted_size) {  in dlfb_alloc_urb_list()
1933 		list_add_tail(&unode->entry, &dlfb->urbs.list);  in dlfb_alloc_urb_list()
1935 		up(&dlfb->urbs.limit_sem);  in dlfb_alloc_urb_list()
1936 		dlfb->urbs.count++;  in dlfb_alloc_urb_list()
1937 		dlfb->urbs.available++;  in dlfb_alloc_urb_list()
1940 	return dlfb->urbs.count;  in dlfb_alloc_urb_list()
1950 	ret = down_timeout(&dlfb->urbs.limit_sem, GET_URB_TIMEOUT);  in dlfb_get_urb()
1955 			 ret, dlfb->urbs.available);  in dlfb_get_urb()
1959 	spin_lock_irq(&dlfb->urbs.lock);  in dlfb_get_urb()
1961 	BUG_ON(list_empty(&dlfb->urbs.list)); /* reserved one with limit_sem */  in dlfb_get_urb()
1962 	entry = dlfb->urbs.list.next;  in dlfb_get_urb()
1964 	dlfb->urbs.available--;  in dlfb_get_urb()
1966 	spin_unlock_irq(&dlfb->urbs.lock);  in dlfb_get_urb()
1976 	BUG_ON(len > dlfb->urbs.size);  in dlfb_submit_urb()