Re: [PATCH] arm64: dma-mapping: fix dma_to_phys API for IOMMU attached devices

From: Arnd Bergmann
Date: Thu Mar 17 2016 - 12:15:37 EST

On Thursday 17 March 2016 12:07:26 Sinan Kaya wrote:
> On 3/17/2016 11:57 AM, Robin Murphy wrote:
> Let me know which direction I should go.
> 1. Fix phys_to_dma and keep dma_to_phys as in the patch.
> 2. Remove both of the API from header file, move it to where it is needed. Rename them as swio_phys_to_dma etc.

Use 2.

It has been a long way to remove all virt_to_bus/bus_to_virt users
from the common architectures, we are not putting them back under
a different name.

Drivers already know the physical address because that is what they
put into dma_map_*() in the first place.