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

From Arnd Bergmann <arnd@arndb.de>
Newsgroups linux.kernel
Subject Re: [PATCH] arm64: dma-mapping: fix dma_to_phys API for IOMMU attached devices
Date 2016-03-17 17:20 +0100
Message-ID <rdIOt-1e4-3@gated-at.bofh.it> (permalink)
References <rdIv7-Qo-7@gated-at.bofh.it> <rdIv7-Qo-5@gated-at.bofh.it> <rdIEP-1aN-47@gated-at.bofh.it>
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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.

	Arnd

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Thread

Re: [PATCH] arm64: dma-mapping: fix dma_to_phys API for IOMMU  attached devices Robin Murphy <robin.murphy@arm.com> - 2016-03-17 17:00 +0100
  Re: [PATCH] arm64: dma-mapping: fix dma_to_phys API for IOMMU  attached devices Sinan Kaya <okaya@codeaurora.org> - 2016-03-17 17:10 +0100
    Re: [PATCH] arm64: dma-mapping: fix dma_to_phys API for IOMMU attached devices Arnd Bergmann <arnd@arndb.de> - 2016-03-17 17:20 +0100
      Re: [PATCH] arm64: dma-mapping: fix dma_to_phys API for IOMMU  attached devices Sinan Kaya <okaya@codeaurora.org> - 2016-03-17 17:40 +0100
        Re: [PATCH] arm64: dma-mapping: fix dma_to_phys API for IOMMU attached devices Arnd Bergmann <arnd@arndb.de> - 2016-03-17 18:10 +0100

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