gen_pool_for_each_chunk
gen_pool_for_each_chunk(*pool, mmu_dma_mem_free_from_chunk, hdev);
gen_pool_for_each_chunk(gp_dma, __gp_dma_free_dma, dma_dev);
extern void gen_pool_for_each_chunk(struct gen_pool *,
EXPORT_SYMBOL(gen_pool_for_each_chunk);
gen_pool_for_each_chunk(binding->chunk_pool,
gen_pool_for_each_chunk(binding->chunk_pool,