Function dma_free

components/drivers/dma/dma_pool.c:387–408

}

static void dma_free(struct rt_device *dev, rt_size_t size,
        void *cpu_addr, rt_ubase_t dma_handle, rt_ubase_t flags)
{
    struct rt_dma_pool *pool;

    region_pool_lock();

    rt_list_for_each_entry(pool, &dma_pool_nodes, list)
    {
        if (dma_handle >= pool->region.start &&
            dma_handle <= pool->region.end)
        {
            rt_iounmap(cpu_addr);

            dma_pool_free(pool, dma_handle, size);

            break;
        }
    }

    region_pool_unlock();
}

void *rt_dma_alloc(struct rt_device *dev, rt_size_t size,
        rt_ubase_t *dma_handle, rt_ubase_t flags)