Previously, we don't have a specific gen_pool_alloc() for DMA usage;
Instead, we need to use gen_pool_virt_to_phys() to convert the addr
returned from gen_pool_alloc(). So each implementation of this has
duplicated code. Thus add new helper function -- gen_pool_dma_alloc().
After
Previously, we don't have a specific gen_pool_alloc() for DMA usage;
Instead, we need to use gen_pool_virt_to_phys() to convert the addr
returned from gen_pool_alloc(). So each implementation of this has
duplicated code. Thus add new helper function -- gen_pool_dma_alloc().
After
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