iommu/io-pgtable-arm-v7s: Clarify LVL_SHIFT/BITS macro

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The current _ARM_V7S_LVL_BITS/ARM_V7S_LVL_SHIFT use a formula to calculate
the corresponding value for level1 and level2 to pretend the code sane.
Actually their level1 and level2 values are different from each other.
This patch only clarify the two macro. No functional change.

Suggested-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Tomasz Figa <tfiga@chromium.org>
Link: https://lore.kernel.org/r/20210111111914.22211-12-yong.wu@mediatek.com
Signed-off-by: Will Deacon <will@kernel.org>

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Yong Wu 2021-01-11 19:18:52 +08:00 • committed by Will Deacon

parent 40596d2f2b

commit 00ab6f2d61

1 changed files with 3 additions and 5 deletions

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drivers/iommu/io-pgtable-arm-v7s.c

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