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| author | Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2013-11-14 14:31:49 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-11-15 09:32:19 +0900 |
| commit | 01058e70767de7b846588ef651c4d66e862f6823 (patch) | |
| tree | 2c31954d0edb541eaa72afe9cc4dcd54ab98326c | |
| parent | 8f43123d170ad9a6760e424af5bde7569fdd8c12 (diff) | |
| download | lwn-01058e70767de7b846588ef651c4d66e862f6823.tar.gz lwn-01058e70767de7b846588ef651c4d66e862f6823.zip | |
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.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index 181c9ba929cd..2349d6272aef 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)); } |