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Commit 29f9f12e authored by Mark McLoughlin's avatar Mark McLoughlin Committed by Rusty Russell
Browse files

virtio: add PCI device release() function 



Add a release() function for virtio_pci devices so as to avoid:

  Device 'virtio0' does not have a release() function, it is broken and must be fixed

Move the code to free the resources associated with the device
from virtio_pci_remove() into this new function. virtio_pci_remove()
now merely unregisters the device which should cause the final
ref to be dropped and virtio_pci_release_dev() to be called.

Signed-off-by: default avatarMark McLoughlin <markmc@redhat.com>
Reported-by: default avatarMichael Tokarev <mjt@tls.msk.ru>
Cc: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: default avatarRusty Russell <rusty@rustcorp.com.au>
parent b194aee9

drivers/virtio/virtio_pci.c

+15 −6
Original line number Diff line number Diff line
@@ -307,6 +307,20 @@ static struct virtio_config_ops virtio_pci_config_ops = { 
	.finalize_features = vp_finalize_features,

};



static void virtio_pci_release_dev(struct device *_d)

{

	struct virtio_device *dev = container_of(_d, struct virtio_device, dev);

	struct virtio_pci_device *vp_dev = to_vp_device(dev);

	struct pci_dev *pci_dev = vp_dev->pci_dev;



	free_irq(pci_dev->irq, vp_dev);

	pci_set_drvdata(pci_dev, NULL);

	pci_iounmap(pci_dev, vp_dev->ioaddr);

	pci_release_regions(pci_dev);

	pci_disable_device(pci_dev);

	kfree(vp_dev);

}



/* the PCI probing function */

static int __devinit virtio_pci_probe(struct pci_dev *pci_dev,

				      const struct pci_device_id *id)
@@ -330,6 +344,7 @@ static int __devinit virtio_pci_probe(struct pci_dev *pci_dev, 
		return -ENOMEM;



	vp_dev->vdev.dev.parent = &virtio_pci_root;

	vp_dev->vdev.dev.release = virtio_pci_release_dev;

	vp_dev->vdev.config = &virtio_pci_config_ops;

	vp_dev->pci_dev = pci_dev;

	INIT_LIST_HEAD(&vp_dev->virtqueues);
@@ -389,12 +404,6 @@ 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);

	pci_release_regions(pci_dev);

	pci_disable_device(pci_dev);

	kfree(vp_dev);

}



#ifdef CONFIG_PM