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iommu/io-pgtable-arm-v7s: Use ias to check the valid iova in unmap
Use the ias for the valid iova checking in arm_v7s_unmap. This is a preparing patch for supporting iova 34bit for MediaTek. 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/20210111111914.22211-10-yong.wu@mediatek.com Signed-off-by: Will Deacon <will@kernel.org>
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@ -711,7 +711,7 @@ static size_t arm_v7s_unmap(struct io_pgtable_ops *ops, unsigned long iova,
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{
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struct arm_v7s_io_pgtable *data = io_pgtable_ops_to_data(ops);
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if (WARN_ON(upper_32_bits(iova)))
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if (WARN_ON(iova >= (1ULL << data->iop.cfg.ias)))
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return 0;
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return __arm_v7s_unmap(data, gather, iova, size, 1, data->pgd);
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