linux-kernel - [PATCH 3/6] iommu/vt-d: clear the redundant assignment in dmar_enable

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Message-ID: <1400589472-8544-4-git-send-email-wangyijing@huawei.com>
Date:	Tue, 20 May 2014 20:37:49 +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 3/6] iommu/vt-d: clear the redundant assignment in dmar_enable_qi

__dmar_enable_qi() will initialize free_head,free_tail and
free_cnt for q_inval. Remove the redundant initialization
in dmar_enable_qi().

Signed-off-by: Yijing Wang <wangyijing@...wei.com>
---
 drivers/iommu/dmar.c |    3 ---
 1 files changed, 0 insertions(+), 3 deletions(-)

diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c
index 39f8b71..1168469 100644
--- a/drivers/iommu/dmar.c
+++ b/drivers/iommu/dmar.c
@@ -1339,9 +1339,6 @@ int dmar_enable_qi(struct intel_iommu *iommu)
 		return -ENOMEM;
 	}
 
-	qi->free_head = qi->free_tail = 0;
-	qi->free_cnt = QI_LENGTH;
-
 	raw_spin_lock_init(&qi->q_lock);
 
 	__dmar_enable_qi(iommu);
-- 
1.7.1


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