[PATCH AUTOSEL 4.4 01/17] iommu/arm-smmu: Free context bitmap in the err path of arm_smmu_init_domain_context

Sasha Levin
2019-10-26T13:23:08Z

From: Liu Xiang <liuxiang_1999@126.com>

[ Upstream commit 6db7bfb431220d78e34d2d0afdb7c12683323588 ]

When alloc_io_pgtable_ops is failed, context bitmap which is just allocated
by __arm_smmu_alloc_bitmap should be freed to release the resource.

Signed-off-by: Liu Xiang <liuxiang_1999@126.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/iommu/arm-smmu.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 47dc7a793f5cf..bc22065d2afa8 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -916,6 +916,7 @@ static int arm_smmu_init_domain_context(struct iommu_domain *domain,
return 0;

out_clear_smmu:
+ __arm_smmu_free_bitmap(smmu->context_map, cfg->cbndx);
smmu_domain->smmu = NULL;
out_unlock:
mutex_unlock(&smmu_domain->init_mutex);
--
2.20.1