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Commit 69146e7b authored by Zhen Lei's avatar Zhen Lei Committed by Will Deacon
Browse files

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



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: default avatarZhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
parent d770e558

drivers/iommu/arm-smmu-v3.c

+1 −1
Original line number Diff line number Diff line
@@ -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,