linux-kernel - [PATCH 13/26] iommu/vt-d: Simplify domain_remove_dev

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Message-Id: <1438787937-7340-14-git-send-email-joro@8bytes.org>
Date:	Wed,  5 Aug 2015 17:18:44 +0200
From:	Joerg Roedel <joro@...tes.org>
To:	iommu@...ts.linux-foundation.org
Cc:	David Woodhouse <dwmw2@...radead.org>,
	Alex Williamson <alex.williamson@...hat.com>,
	linux-kernel@...r.kernel.org, Joerg Roedel <joro@...tes.org>,
	jroedel@...e.de
Subject: [PATCH 13/26] iommu/vt-d: Simplify domain_remove_dev_info()

From: Joerg Roedel <jroedel@...e.de>

Just call domain_remove_one_dev_info() for all devices in
the domain instead of reimplementing the functionality.

Signed-off-by: Joerg Roedel <jroedel@...e.de>
---
 drivers/iommu/intel-iommu.c | 20 ++------------------
 1 file changed, 2 insertions(+), 18 deletions(-)

diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index f59b4ef..265b02e 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -2251,25 +2251,9 @@ 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, *tmp;
-	unsigned long flags;
-
-	spin_lock_irqsave(&device_domain_lock, flags);
-	list_for_each_entry_safe(info, tmp, &domain->devices, link) {
-		unlink_domain_info(info);
-		spin_unlock_irqrestore(&device_domain_lock, flags);
-
-		iommu_disable_dev_iotlb(info);
-		iommu_detach_dev(info->iommu, info->bus, info->devfn);
-
-		if (domain_type_is_vm(domain)) {
-			iommu_detach_dependent_devices(info->iommu, info->dev);
-			domain_detach_iommu(domain, info->iommu);
-		}
 
-		free_devinfo_mem(info);
-		spin_lock_irqsave(&device_domain_lock, flags);
-	}
-	spin_unlock_irqrestore(&device_domain_lock, flags);
+	list_for_each_entry_safe(info, tmp, &domain->devices, link)
+		domain_remove_one_dev_info(domain, info->dev);
 }
 
 /*
-- 
1.9.1

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