linux-kernel - [PATCH] virtio: decrement dev_index when device is unregistered

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Message-ID: <66015840.659833.1301978966706.JavaMail.root@zmail07.collab.prod.int.phx2.redhat.com>
Date:	Tue, 5 Apr 2011 00:49:26 -0400 (EDT)
From:	Takuma Umeya <tumeya@...hat.com>
To:	virtualization@...ts.linux-foundation.org
Cc:	Stephen Hemminger <shemminger@...tta.com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] virtio: decrement dev_index when device is unregistered

When virtio device is removed, dev_index does not get decremented. 
The next device hotplug event results in consuming the next pci to 
the one that is suppose to be available. 

Signed-off-by: Takuma Umeya <tumeya@...hat.com>

diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c
index efb35aa..67fe71d 100644
--- a/drivers/virtio/virtio.c
+++ b/drivers/virtio/virtio.c
@@ -216,6 +216,7 @@ EXPORT_SYMBOL_GPL(register_virtio_device);
 void unregister_virtio_device(struct virtio_device *dev)
 {
        device_unregister(&dev->dev);
+       dev_index--;
 }
 EXPORT_SYMBOL_GPL(unregister_virtio_device);
 

-- 
Umeya, Takuma
Technical Account Manager
Red Hat GSS APAC
+81.3.5798.8584 (direct)
tumeya@...hat.com
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