linux-kernel - [PATCH 1/6] iommu/vt-d: Use list_for_each

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Date:	Tue, 20 May 2014 20:37:47 +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 1/6] iommu/vt-d: Use list_for_each_safe() to simplify code

Use list_for_each_entry_safe() instead of list_entry()
to simplify code.

Signed-off-by: Yijing Wang <wangyijing@...wei.com>
---
 drivers/iommu/intel-iommu.c |    6 ++----
 1 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index f256ffc..e020dcf 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -2101,13 +2101,11 @@ static inline void unlink_domain_info(struct device_domain_info *info)
 
 static void domain_remove_dev_info(struct dmar_domain *domain)
 {
-	struct device_domain_info *info;
+	struct device_domain_info *info, *tmp;
 	unsigned long flags, flags2;
 
 	spin_lock_irqsave(&device_domain_lock, flags);
-	while (!list_empty(&domain->devices)) {
-		info = list_entry(domain->devices.next,
-			struct device_domain_info, link);
+	list_for_each_entry_safe(info, tmp, &domain->devices, link) {
 		unlink_domain_info(info);
 		spin_unlock_irqrestore(&device_domain_lock, flags);
 
-- 
1.7.1


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