linux-kernel - [PATCH 6/6] iommu/vt-d: fix reference count in iommu_prepare

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Date:	Tue, 20 May 2014 20:37:52 +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 6/6] iommu/vt-d: fix reference count in iommu_prepare_isa

Decrease the device reference count avoid memory leak.

Signed-off-by: Yijing Wang <wangyijing@...wei.com>
---
 drivers/iommu/intel-iommu.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 455896c..a78a824 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -2401,7 +2401,8 @@ static inline void iommu_prepare_isa(void)
 	if (ret)
 		printk(KERN_ERR "IOMMU: Failed to create 0-16MiB identity map; "
 		       "floppy might not work\n");
-
+	
+	pci_dev_put(pdev);
 }
 #else
 static inline void iommu_prepare_isa(void)
-- 
1.7.1


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