linux-kernel - [PATCH 4/6] iommu/vt-d: clear the redundant assignment for domain->nid

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Date:	Tue, 20 May 2014 20:37:50 +0800
From:	Yijing Wang <wangyijing@...wei.com>
To:	Joerg Roedel <joro@...tes.org>,
	David Woodhouse <dwmw2@...radead.org>
CC:	<iommu@...ts.linux-foundation.org>, <linux-kernel@...r.kernel.org>,
	Yijing Wang <wangyijing@...wei.com>
Subject: [PATCH 4/6] iommu/vt-d: clear the redundant assignment for domain->nid

Alloc_domain() will initialize domain->nid to -1. So the
initialization for domain->nid in md_domain_init() is redundant,
clear it.

Signed-off-by: Yijing Wang <wangyijing@...wei.com>
---
 drivers/iommu/intel-iommu.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)

diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 6b71608..d1d6636 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -4134,7 +4134,6 @@ static int md_domain_init(struct dmar_domain *domain, int guest_width)
 	domain->iommu_snooping = 0;
 	domain->iommu_superpage = 0;
 	domain->max_addr = 0;
-	domain->nid = -1;
 
 	/* always allocate the top pgd */
 	domain->pgd = (struct dma_pte *)alloc_pgtable_page(domain->nid);
-- 
1.7.1


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