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Date: Thu, 10 Oct 2013 21:05:58 +0300
From: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
To: Andrew Morton <akpm@...ux-foundation.org>,
Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>
Cc: linux-kernel@...r.kernel.org, linux-mm@...ck.org,
linux-arch@...r.kernel.org,
"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
Will Deacon <will.deacon@....com>,
Grant Likely <grant.likely@...aro.org>,
Rob Herring <rob.herring@...xeda.com>
Subject: [PATCH 33/34] iommu/arm-smmu: handle pgtable_page_ctor() fail
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
Cc: Will Deacon <will.deacon@....com>
Cc: Grant Likely <grant.likely@...aro.org>
Cc: Rob Herring <rob.herring@...xeda.com>
---
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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