video/fbdev/smscufx.c

96 	struct urb_list urbs;
132 /* ufx keeps a list of urbs for efficient bulk transfers */
1086 	up(&unode->dev->urbs.limit_sem);
1717 	if (dev->urbs.count > 0)
1740 	/* When non-active we'll update virtual framebuffer, but no new urbs */
1749 	/* this function will wait for all in-flight urbs to complete */
1750 	if (dev->urbs.count > 0)
1786 	urb->transfer_buffer_length = dev->urbs.size; /* reset to actual */
1788 	spin_lock_irqsave(&dev->urbs.lock, flags);
1789 	list_add_tail(&unode->entry, &dev->urbs.list);
1790 	dev->urbs.available++;
1791 	spin_unlock_irqrestore(&dev->urbs.lock, flags);
1798 		up(&dev->urbs.limit_sem);
1803 	int count = dev->urbs.count;
1810 	pr_debug("Waiting for completes and freeing all render urbs\n");
1815 		ret = down_interruptible(&dev->urbs.limit_sem);
1819 		spin_lock_irqsave(&dev->urbs.lock, flags);
1821 		node = dev->urbs.list.next; /* have reserved one with sem */
1824 		spin_unlock_irqrestore(&dev->urbs.lock, flags);
1830 		usb_free_coherent(urb->dev, dev->urbs.size,
1844 	spin_lock_init(&dev->urbs.lock);
1846 	dev->urbs.size = size;
1847 	INIT_LIST_HEAD(&dev->urbs.list);
1878 		list_add_tail(&unode->entry, &dev->urbs.list);
1883 	sema_init(&dev->urbs.limit_sem, i);
1884 	dev->urbs.count = i;
1885 	dev->urbs.available = i;
1887 	pr_debug("allocated %d %d byte urbs\n", i, (int) size);
1901 	ret = down_timeout(&dev->urbs.limit_sem, GET_URB_TIMEOUT);
1905 		       ret, dev->urbs.available);
1909 	spin_lock_irqsave(&dev->urbs.lock, flags);
1911 	BUG_ON(list_empty(&dev->urbs.list)); /* reserved one with limit_sem */
1912 	entry = dev->urbs.list.next;
1914 	dev->urbs.available--;
1916 	spin_unlock_irqrestore(&dev->urbs.lock, flags);
1929 	BUG_ON(len > dev->urbs.size);