Messages in this thread | | | Date | Thu, 12 Sep 2013 18:35:54 +0100 | From | Russell King - ARM Linux <> | Subject | Re: [PATCH] dma: use %pa to print dma_addr_t |
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On Thu, Sep 12, 2013 at 10:11:44AM -0700, Olof Johansson wrote: > Any >32bit-addressable machine will likely want 64-bit dma_addr_t as > well. The only architecture that doesn't seem to set > ARCH_DMA_ADDR_T_64BIT based on PHYS_ADDR_T size is ARM, and I think > that should just be changed there as well.
Do we actually have any 64-bit DMA controllers out there? As far as I'm aware, all our DMA controllers are all 32-bit address only. That makes a 64-bit dma_addr_t rather silly.
Remember that dma_addr_t is the value you program into the DMA controller, and _not_ the actual physical address.
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