On Feb 20, 2012 4:31 PM, "Catalin Marinas" <catalin.mari...@arm.com> wrote: > > On 16 February 2012 18:14, viresh kumar <viresh.li...@gmail.com> wrote: > > On Thu, Feb 16, 2012 at 9:48 AM, Catalin Marinas > > <catalin.mari...@arm.com> wrote: > >> The DMA API implementation on ARM takes care of the cache cleaning and > >> invalidating. > > > > I believe that this is the reason why we have cache re-invalidation > > (we invalidated > > it in dma_map_*() earlier) in dma_unmap_*() calls for ARMv6+ for > > DMA_FROM_DEVICE. > > Am i Correct? > > Yes. >
But why isn't keeping only the second one sufficient? Why don't we remove it from dma_map_* routines? -- Viresh
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