linux-kernel - [Patch V2 2/2] iommu: remove sysfs_link to device in iommu

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Message-Id: <1458771911-30785-3-git-send-email-richard.weiyang@gmail.com>
Date:	Wed, 23 Mar 2016 22:25:11 +0000
From:	Wei Yang <richard.weiyang@...il.com>
To:	treding@...dia.com, alex.williamson@...hat.com
Cc:	joro@...tes.org, iommu@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org, Wei Yang <richard.weiyang@...il.com>
Subject: [Patch V2 2/2] iommu: remove sysfs_link to device in iommu_group/devices when failed

The original code forgets to remove the sysfs_link to a device in
iommu_group/devices directory, when the creation fails or conflicts on the
name.

This patch tries to remove the sysfs_link on the failure.

Signed-off-by: Wei Yang <richard.weiyang@...il.com>
---
 drivers/iommu/iommu.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 2696a38..8f480ba 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -403,6 +403,7 @@ rename:
 	ret = sysfs_create_link_nowarn(group->devices_kobj,
 				       &dev->kobj, device->name);
 	if (ret) {
+		sysfs_remove_link(group->devices_kobj, device->name);
 		kfree(device->name);
 		if (ret == -EEXIST && i >= 0) {
 			/*
-- 
1.7.9.5