Virtio power management for virtio pci devices is defined on top of PCI
power management, so it mostly works out of the box. All that's needed
is to add suspend/resume callbacks to the virtio core, instead of
reusing the freeze/restore.
Signed-off-by: David Stevens <stevensd@xxxxxxxxxxxx>
---
drivers/virtio/virtio_pci_common.c | 21 ++++++++++++++++++++-
1 file changed, 20 insertions(+), 1 deletion(-)
diff --git a/drivers/virtio/virtio_pci_common.c b/drivers/virtio/virtio_pci_common.c
index c2524a7207cf..0cad900eaf4f 100644
--- a/drivers/virtio/virtio_pci_common.c
+++ b/drivers/virtio/virtio_pci_common.c
@@ -492,8 +492,27 @@ static int virtio_pci_restore(struct device *dev)
return virtio_device_restore(&vp_dev->vdev);
}
+static int virtio_pci_suspend(struct device *dev)
+{
+ struct pci_dev *pci_dev = to_pci_dev(dev);
+
+ return pci_dev->pm_cap ? 0 : virtio_pci_freeze(dev);
+}
+
+static int virtio_pci_resume(struct device *dev)
+{
+ struct pci_dev *pci_dev = to_pci_dev(dev);
+
+ return pci_dev->pm_cap ? 0 : virtio_pci_restore(dev);
+}
+
static const struct dev_pm_ops virtio_pci_pm_ops = {
- SET_SYSTEM_SLEEP_PM_OPS(virtio_pci_freeze, virtio_pci_restore)
+ .suspend = virtio_pci_suspend,
+ .resume = virtio_pci_resume,
+ .freeze = virtio_pci_freeze,
+ .thaw = virtio_pci_restore,
+ .poweroff = virtio_pci_freeze,
+ .restore = virtio_pci_restore,
};
#endif
--
2.42.0.869.gea05f2083d-goog
