[PATCH 4/5] virtio-pci: S3 support
From: Amit Shah <hidden>
Date: 2012-03-29 08:28:10
Subsystem:
the rest, virtio core · Maintainers:
Linus Torvalds, "Michael S. Tsirkin", Jason Wang
There's no difference in supporting S3 and S4 for virtio devices: the vqs have to be re-created as the device has to be assumed to be reset at restore-time. Since S4 already handles this situation, we can directly use the same code and callbacks for S3 support. Signed-off-by: Amit Shah <redacted> --- drivers/virtio/virtio_pci.c | 24 +++--------------------- 1 files changed, 3 insertions(+), 21 deletions(-)
diff --git a/drivers/virtio/virtio_pci.c b/drivers/virtio/virtio_pci.c
index 982d6c9..0fa4f85 100644
--- a/drivers/virtio/virtio_pci.c
+++ b/drivers/virtio/virtio_pci.c@@ -720,24 +720,6 @@ static void __devexit virtio_pci_remove(struct pci_dev *pci_dev) } #ifdef CONFIG_PM -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 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);
@@ -786,12 +768,12 @@ static int virtio_pci_restore(struct device *dev) } static const struct dev_pm_ops virtio_pci_pm_ops = { - .suspend = virtio_pci_suspend, - .resume = virtio_pci_resume, + .suspend = virtio_pci_freeze, + .resume = virtio_pci_restore, .freeze = virtio_pci_freeze, .thaw = virtio_pci_restore, .restore = virtio_pci_restore, - .poweroff = virtio_pci_suspend, + .poweroff = virtio_pci_freeze, }; #endif
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1.7.7.6