Re: [PATCH v2 1/2] drivers: dma-coherent: Fix dev->cma_area vs dev->dma_mem breakage

From: Christoph Hellwig
Date: Fri Jul 07 2017 - 10:27:53 EST


this is why I really didn't like overloading the current
dma coherent infrastructure with the global pool.

And this new patch seems like piling hacks over hacks. I think we
should go back and make sure allocations from the global coherent
pool are done by the dma ops implementation, and not before calling
into them - preferably still reusing the common code for it.

Vladimir or Vitaly - can you look into that?