next_ring_head    223 drivers/usb/misc/ldusb.c 	unsigned int next_ring_head;
next_ring_head    244 drivers/usb/misc/ldusb.c 		next_ring_head = (dev->ring_head+1) % ring_buffer_size;
next_ring_head    245 drivers/usb/misc/ldusb.c 		if (next_ring_head != dev->ring_tail) {
next_ring_head    250 drivers/usb/misc/ldusb.c 			dev->ring_head = next_ring_head;