powerpc/kernel: Avoid preemption check during iommu_range_alloc

[Michael Ellerman]

On Thu, 2017-07-20 at 17:26:06 UTC, victora wrote:
> Replaced __this_cpu_read function call by raw_cpu_read in
> iommu_range_alloc function.
> Preemption doesn't need to be disabled since any CPU can safely
> use IOMMU pool.
> 
> Signed-off-by: Victor Aoqui <victora at linux.vnet.ibm.com>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/75f327c6b75715f3a090daeb33e050

cheers