VCHIQ_MAX_SLOTS_PER_SIDE
BUILD_BUG_ON_NOT_POWER_OF_2(VCHIQ_MAX_SLOTS_PER_SIDE);
slot_zero->max_slots_per_side = VCHIQ_MAX_SLOTS_PER_SIDE;
int slot_queue[VCHIQ_MAX_SLOTS_PER_SIDE];
#define VCHIQ_SLOT_QUEUE_MASK (VCHIQ_MAX_SLOTS_PER_SIDE - 1)