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Commit a03849e7 authored by Oleksandr Tyshchenko's avatar Oleksandr Tyshchenko Committed by Will Deacon
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iommu/io-pgtable-arm-v7s: Check for leaf entry before dereferencing it



Do a check for already installed leaf entry at the current level before
dereferencing it in order to avoid walking the page table down with
wrong pointer to the next level.

Signed-off-by: default avatarOleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
CC: Will Deacon <will.deacon@arm.com>
CC: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
parent ed46e66c
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