static inline dma_addr_t xhci_addr64(uint32_t low, uint32_t high)
{
    if (sizeof(dma_addr_t) == 4) {
        return low;
    } else {
        return low | (((dma_addr_t)high << 16) << 16);
    }
}

The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.