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iommu/arm-smmu: handle pgtable_page_ctor() fail

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Signed-off-by: Kirill A. Shutemov <[email protected]>
Acked-by: Will Deacon <[email protected]>
Cc: Grant Likely <[email protected]>
Cc: Rob Herring <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Kirill A. Shutemov 2013-11-14 14:31:49 -08:00 • committed by Linus Torvalds
commit 01058e7076
1 changed files with 4 additions and 1 deletions
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5
drivers/iommu/arm-smmu.c
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@ -1212,7 +1212,10 @@ static int arm_smmu_alloc_init_pte(struct arm_smmu_device *smmu, pmd_t *pmd,
arm_smmu_flush_pgtable(smmu, page_address(table),
ARM_SMMU_PTE_HWTABLE_SIZE);
pgtable_page_ctor(table);
if (!pgtable_page_ctor(table)) {
__free_page(table);
return -ENOMEM;
}
pmd_populate(NULL, pmd, table);
arm_smmu_flush_pgtable(smmu, pmd, sizeof(*pmd));
}