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authorYong Wu <yong.wu@mediatek.com>2021-01-11 14:18:50 +0300
committerWill Deacon <will@kernel.org>2021-02-01 14:31:16 +0300
commit859da21112520829638a82f458ac2c8c2637e17d (patch)
tree4da9cfe73937e5d7378f09e2b9582356658a1f3d /drivers/iommu
parent66a28915541549f0fe0f4c705dab77443f22b5d6 (diff)
downloadlinux-859da21112520829638a82f458ac2c8c2637e17d.tar.xz
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>
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/io-pgtable-arm-v7s.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iommu/io-pgtable-arm-v7s.c b/drivers/iommu/io-pgtable-arm-v7s.c
index 929cb1518db1..03f35065acff 100644
--- a/drivers/iommu/io-pgtable-arm-v7s.c
+++ b/drivers/iommu/io-pgtable-arm-v7s.c
@@ -711,7 +711,7 @@ static size_t arm_v7s_unmap(struct io_pgtable_ops *ops, unsigned long iova,
{
struct arm_v7s_io_pgtable *data = io_pgtable_ops_to_data(ops);
- if (WARN_ON(upper_32_bits(iova)))
+ if (WARN_ON(iova >= (1ULL << data->iop.cfg.ias)))
return 0;
return __arm_v7s_unmap(data, gather, iova, size, 1, data->pgd);