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iommu/arm-smmu: Fix the index calculation of strtab

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The element size of cfg->strtab is just one DWORD, so we should use a
multiply operation instead of a shift when calculating the level 1
index.

Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Zhen Lei 2015-06-26 09:32:58 +01:00 committed by Will Deacon
parent d770e558e2
commit 69146e7bfc
1 changed files with 1 additions and 1 deletions
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drivers/iommu/arm-smmu-v3.c
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@ -1064,7 +1064,7 @@ static int arm_smmu_init_l2_strtab(struct arm_smmu_device *smmu, u32 sid)
return 0;
size = 1 << (STRTAB_SPLIT + ilog2(STRTAB_STE_DWORDS) + 3);
strtab = &cfg->strtab[sid >> STRTAB_SPLIT << STRTAB_L1_DESC_DWORDS];
strtab = &cfg->strtab[(sid >> STRTAB_SPLIT) * STRTAB_L1_DESC_DWORDS];
desc->span = STRTAB_SPLIT + 1;
desc->l2ptr = dma_zalloc_coherent(smmu->dev, size, &desc->l2ptr_dma,