From: Yijing Wang <wangyijing@huawei.com>
Date: Tue, 20 May 2014 12:37:49 +0000 (+0800)
Subject: iommu/vt-d: Clear the redundant assignment in dmar_enable_qi
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=435bbb463349e369d070ffbfdaa00921ea828f83;p=linux-beck.git

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@huawei.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
---

diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c
index 9a4f05e5b23f..f2eb0bc419f8 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);