[PATCH 33/34] iommu/arm-smmu: handle pgtable_page_ctor() fail
From: Kirill A. Shutemov
Date: Thu Oct 10 2013 - 14:07:35 EST
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Will Deacon <will.deacon@xxxxxxx>
Cc: Grant Likely <grant.likely@xxxxxxxxxx>
Cc: Rob Herring <rob.herring@xxxxxxxxxxx>
---
drivers/iommu/arm-smmu.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index f417e89e1e..2b256a5075 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -1211,7 +1211,10 @@ 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));
}
--
1.8.4.rc3
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