iommu/arm-smmu: Constify iommu_gather_ops structures

Check for iommu_gather_ops structures that are only stored in the tlb
field of an io_pgtable_cfg structure. The tlb field is of type
const struct iommu_gather_ops *, so iommu_gather_ops structures
having this property can be declared as const.

Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 8f7281444551dfc8a7b1a1bbfdb66a81f28e01ca..2f15ffb6cb0c490c705119ddc10651c10ebb36c9 100644 (file)
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -642,7 +642,7 @@ static void arm_smmu_tlb_inv_range_nosync(unsigned long iova, size_t size,
        }
 }
 
-static struct iommu_gather_ops arm_smmu_gather_ops = {
+static const struct iommu_gather_ops arm_smmu_gather_ops = {
        .tlb_flush_all  = arm_smmu_tlb_inv_context,
        .tlb_add_flush  = arm_smmu_tlb_inv_range_nosync,
        .tlb_sync       = arm_smmu_tlb_sync,