From: Sinan Kaya <ok...@codeaurora.org> Date: Sat, 16 Apr 2016 18:23:32 -0400
> Current code is assuming that the address returned by dma_alloc_coherent > is a logical address. This is not true on ARM/ARM64 systems. This patch > replaces dma_alloc_coherent with dma_map_page API. The address returned > can later by virtually mapped from the CPU side with vmap API. > > Signed-off-by: Sinan Kaya <ok...@codeaurora.org> You can't do this. The DMA map page API gives non-coherent mappings, and thus requires proper flushing. So a straight conversion like this is never legitimate.
