From: Hiroshi DOYU <hdoyu@nvidia.com>
Date: Mon, 2 Jul 2012 11:26:37 +0000 (+0300)
Subject: iommu/tegra: smmu: Remove unnecessary sanity check at alloc_pdir()
X-Git-Tag: firefly_0821_release~3680^2~2367^2^5~3
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=0bdbf4ccef4f87016e2fa0c0b34f7a025f364c3d;p=firefly-linux-kernel-4.4.55.git

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 becfc614cf94..68441fcca261 100644
--- 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) {