linux-kernel - [PATCH] virtio_pci: unregister virtio device at device remove

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Message-Id: <1205976904-19592-1-git-send-email-aliguori@us.ibm.com>
Date:	Wed, 19 Mar 2008 20:35:04 -0500
From:	Anthony Liguori <aliguori@...ibm.com>
To:	virtualization@...ts.linux-foundation.org
Cc:	Rusty Russell <rusty@...tcorp.com.au>,
	Marcelo Tosatti <mtosatti@...hat.com>,
	kvm-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org,
	Anthony Liguori <aliguori@...ibm.com>
Subject: [PATCH] virtio_pci: unregister virtio device at device remove

Make sure to call unregister_virtio_device() when a virtio device is removed.
Otherwise, virtio_pci.ko cannot be rmmod'd.

This was spotted by Marcelo Tosatti.

Signed-off-by: Anthony Liguori <aliguori@...ibm.com>

diff --git a/drivers/virtio/virtio_pci.c b/drivers/virtio/virtio_pci.c
index 59a8f73..6c8ecde 100644
--- a/drivers/virtio/virtio_pci.c
+++ b/drivers/virtio/virtio_pci.c
@@ -388,6 +388,7 @@ static void __devexit virtio_pci_remove(struct pci_dev *pci_dev)
 {
 	struct virtio_pci_device *vp_dev = pci_get_drvdata(pci_dev);
 
+	unregister_virtio_device(&vp_dev->vdev);
 	free_irq(pci_dev->irq, vp_dev);
 	pci_set_drvdata(pci_dev, NULL);
 	pci_iounmap(pci_dev, vp_dev->ioaddr);
--
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