[PATCH v4 1/1] iommu-api: Add map_sg/unmap_sg functions

Olav Haugan ohaugan at codeaurora.org
Wed Aug 6 16:28:45 PDT 2014

On 8/6/2014 1:17 PM, Joerg Roedel wrote:
> On Wed, Aug 06, 2014 at 10:08:55AM -0700, Olav Haugan wrote:
>> so you are suggesting that I check in "bus_set_iommu()" whether the
>> driver has set the map_sg/unmap_sg function pointers or not and if not
>> set it to the default? Is bus_set_iommu() the only way drivers can set
>> up the callbacks?
> This doesn't work as the iommu_ops are now const. You have to either
> update the iommu drivers individually to point to the default function,
> or you do the check in the API function itself and fall back to the
> default it no call-back is provided.

Ok, then I think it is better to just leave the fallback where it is now
in the function itself.



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