iommu/tegra: smmu: Remove unnecessary sanity check at alloc_pdir()

alloc_pdir() is called with smmu->as[?].pdir_page == NULL. No need to
check pdir_page again inside alloc_pdir().

Signed-off-by: Hiroshi DOYU <hdoyu@nvidia.com>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>

diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c
index becfc61..68441fc 100644 (file)
--- a/drivers/iommu/tegra-smmu.c
+++ b/drivers/iommu/tegra-smmu.c
@@ -562,9 +562,6 @@ static int alloc_pdir(struct smmu_as *as)
        u32 val;
        struct smmu_device *smmu = as->smmu;
 
-       if (as->pdir_page)
-               return 0;
-
        as->pte_count = devm_kzalloc(smmu->dev,
                     sizeof(as->pte_count[0]) * SMMU_PDIR_COUNT, GFP_KERNEL);
        if (!as->pte_count) {