iommu/io-pgtable-arm: Simplify start level lookup

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Beyond a couple of allocation-time calculations, data->levels is only
ever used to derive the start level. Storing the start level directly
leads to a small reduction in object code, which should help eke out a
little more efficiency, and slightly more readable source to boot.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>

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Robin Murphy 2019-10-25 19:08:33 +01:00 • committed by Will Deacon

parent 67f3e53d2a

commit 594ab90fc4

1 changed files with 20 additions and 25 deletions

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drivers/iommu/io-pgtable-arm.c

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