1 files changed, 104 insertions, 6 deletions

diff --git a/drivers/virtio/virtio_pci.c b/drivers/virtio/virtio_pci.c
index baabb7937ec2..635e1efb3792 100644
--- a/drivers/virtio/virtio_pci.c
+++ b/drivers/virtio/virtio_pci.c
@@ -55,6 +55,10 @@ struct virtio_pci_device
 	unsigned msix_vectors;
 	/* Vectors allocated, excluding per-vq vectors if any */
 	unsigned msix_used_vectors;
+
+	/* Status saved during hibernate/restore */
+	u8 saved_status;
+
 	/* Whether we have vector per vq */
 	bool per_vq_vectors;
 };
@@ -414,8 +418,8 @@ static struct virtqueue *setup_vq(struct virtio_device *vdev, unsigned index,
 		  vp_dev->ioaddr + VIRTIO_PCI_QUEUE_PFN);
 
 	/* create the vring */
-	vq = vring_new_virtqueue(info->num, VIRTIO_PCI_VRING_ALIGN,
-				 vdev, info->queue, vp_notify, callback, name);
+	vq = vring_new_virtqueue(info->num, VIRTIO_PCI_VRING_ALIGN, vdev,
+				 true, info->queue, vp_notify, callback, name);
 	if (!vq) {
 		err = -ENOMEM;
 		goto out_activate_queue;
@@ -716,19 +720,114 @@ static void __devexit virtio_pci_remove(struct pci_dev *pci_dev)
 }
 
 #ifdef CONFIG_PM
-static int virtio_pci_suspend(struct pci_dev *pci_dev, pm_message_t state)
+static int virtio_pci_suspend(struct device *dev)
 {
+	struct pci_dev *pci_dev = to_pci_dev(dev);
+
 	pci_save_state(pci_dev);
 	pci_set_power_state(pci_dev, PCI_D3hot);
 	return 0;
 }
 
-static int virtio_pci_resume(struct pci_dev *pci_dev)
+static int virtio_pci_resume(struct device *dev)
 {
+	struct pci_dev *pci_dev = to_pci_dev(dev);
+
 	pci_restore_state(pci_dev);
 	pci_set_power_state(pci_dev, PCI_D0);
 	return 0;
 }
+
+static int virtio_pci_freeze(struct device *dev)
+{
+	struct pci_dev *pci_dev = to_pci_dev(dev);
+	struct virtio_pci_device *vp_dev = pci_get_drvdata(pci_dev);
+	struct virtio_driver *drv;
+	int ret;
+
+	drv = container_of(vp_dev->vdev.dev.driver,
+			   struct virtio_driver, driver);
+
+	ret = 0;
+	vp_dev->saved_status = vp_get_status(&vp_dev->vdev);
+	if (drv && drv->freeze)
+		ret = drv->freeze(&vp_dev->vdev);
+
+	if (!ret)
+		pci_disable_device(pci_dev);
+	return ret;
+}
+
+static int restore_common(struct device *dev)
+{
+	struct pci_dev *pci_dev = to_pci_dev(dev);
+	struct virtio_pci_device *vp_dev = pci_get_drvdata(pci_dev);
+	int ret;
+
+	ret = pci_enable_device(pci_dev);
+	if (ret)
+		return ret;
+	pci_set_master(pci_dev);
+	vp_finalize_features(&vp_dev->vdev);
+
+	return ret;
+}
+
+static int virtio_pci_thaw(struct device *dev)
+{
+	struct pci_dev *pci_dev = to_pci_dev(dev);
+	struct virtio_pci_device *vp_dev = pci_get_drvdata(pci_dev);
+	struct virtio_driver *drv;
+	int ret;
+
+	ret = restore_common(dev);
+	if (ret)
+		return ret;
+
+	drv = container_of(vp_dev->vdev.dev.driver,
+			   struct virtio_driver, driver);
+
+	if (drv && drv->thaw)
+		ret = drv->thaw(&vp_dev->vdev);
+	else if (drv && drv->restore)
+		ret = drv->restore(&vp_dev->vdev);
+
+	/* Finally, tell the device we're all set */
+	if (!ret)
+		vp_set_status(&vp_dev->vdev, vp_dev->saved_status);
+
+	return ret;
+}
+
+static int virtio_pci_restore(struct device *dev)
+{
+	struct pci_dev *pci_dev = to_pci_dev(dev);
+	struct virtio_pci_device *vp_dev = pci_get_drvdata(pci_dev);
+	struct virtio_driver *drv;
+	int ret;
+
+	drv = container_of(vp_dev->vdev.dev.driver,
+			   struct virtio_driver, driver);
+
+	ret = restore_common(dev);
+	if (!ret && drv && drv->restore)
+		ret = drv->restore(&vp_dev->vdev);
+
+	/* Finally, tell the device we're all set */
+	if (!ret)
+		vp_set_status(&vp_dev->vdev, vp_dev->saved_status);
+
+	return ret;
+}
+
+static const struct dev_pm_ops virtio_pci_pm_ops = {
+	.suspend	= virtio_pci_suspend,
+	.resume		= virtio_pci_resume,
+	.freeze		= virtio_pci_freeze,
+	.thaw		= virtio_pci_thaw,
+	.restore	= virtio_pci_restore,
+	.poweroff	= virtio_pci_suspend,
+};
 #endif
 
 static struct pci_driver virtio_pci_driver = {
@@ -737,8 +836,7 @@ static struct pci_driver virtio_pci_driver = {
 	.probe		= virtio_pci_probe,
 	.remove		= __devexit_p(virtio_pci_remove),
 #ifdef CONFIG_PM
-	.suspend	= virtio_pci_suspend,
-	.resume		= virtio_pci_resume,
+	.driver.pm	= &virtio_pci_pm_ops,
 #endif
 };