Hi Thierry,
I love your patch! Yet something to improve:
[auto build test ERROR on linus/master]
[also build test ERROR on v5.4-rc5 next-20191031]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to spec
From: Thierry Reding
This dummy implementation is useful to avoid a dependency on the
IOMMU_API Kconfig symbol in drivers that can optionally use the IOMMU
API.
In order to fully use this, also move the struct iommu_fwspec definition
out of the IOMMU_API protected region.
Suggested-by: Ben Dook