powerpc/kernel: Avoid preemption check in iommu_range_alloc()

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Replace the __this_cpu_read() with raw_cpu_read() in
iommu_range_alloc(). Otherwise we get a warning about using
__this_cpu_read() in preemptible code:

  BUG: using __this_cpu_read() in preemptible
  caller is iommu_range_alloc+0xa8/0x3d0

Preemption doesn't need to be disabled since according to the comment
any CPU can safely use any IOMMU pool.

Signed-off-by: Victor Aoqui <victora@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

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Victor Aoqui 2017-07-20 14:26:06 -03:00 • committed by Michael Ellerman

parent 24be85a23d

commit 75f327c6b7

1 changed files with 1 additions and 1 deletions

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arch/powerpc/kernel/iommu.c

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