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iommu/io-pgtable-arm-v7s: Use ias/oas to check the valid iova/pa 

Use ias/oas to check the valid iova/pa. Synchronize this checking with
io-pgtable-arm.c.

Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Yong Wu 2019-08-24 11:01:52 +08:00 committed by Joerg Roedel
parent 5950b9541b
commit 7f315c9da9
1 changed files with 2 additions and 1 deletions
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3
drivers/iommu/io-pgtable-arm-v7s.c
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@ -504,7 +504,8 @@ static int arm_v7s_map(struct io_pgtable_ops *ops, unsigned long iova,
if (!(prot & (IOMMU_READ | IOMMU_WRITE))) if (!(prot & (IOMMU_READ | IOMMU_WRITE)))
return 0; return 0;
if (WARN_ON(upper_32_bits(iova) || upper_32_bits(paddr))) if (WARN_ON(iova >= (1ULL << data->iop.cfg.ias) ||
paddr >= (1ULL << data->iop.cfg.oas)))
return -ERANGE; return -ERANGE;
ret = __arm_v7s_map(data, iova, paddr, size, prot, 1, data->pgd); ret = __arm_v7s_map(data, iova, paddr, size, prot, 1, data->pgd);