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iommu/arm-smmu: handle pgtable_page_ctor() fail 

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Kirill A. Shutemov 2013-11-14 14:31:49 -08:00 committed by Linus Torvalds
parent 8f43123d17
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));
}