CARL9170_DEBUG_RING_SIZE
ar->debug.ring_tail %= CARL9170_DEBUG_RING_SIZE;
ar->debug.ring_head %= CARL9170_DEBUG_RING_SIZE;
DEBUGFS_DECLARE_RW_FILE(hw_ioread32, CARL9170_DEBUG_RING_SIZE * 40);
struct carl9170_debug_mem_rbe ring[CARL9170_DEBUG_RING_SIZE];