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authorKirill A. Shutemov <kirill.shutemov@linux.intel.com>2013-11-14 14:31:49 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-11-15 09:32:19 +0900
commit01058e70767de7b846588ef651c4d66e862f6823 (patch)
tree2c31954d0edb541eaa72afe9cc4dcd54ab98326c
parent8f43123d170ad9a6760e424af5bde7569fdd8c12 (diff)
downloadop-kernel-dev-01058e70767de7b846588ef651c4d66e862f6823.zip
op-kernel-dev-01058e70767de7b846588ef651c4d66e862f6823.tar.gz
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>
-rw-r--r--drivers/iommu/arm-smmu.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 181c9ba..2349d62 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -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));
}
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