Some actions during shutdown need device to be in D0 state, such as
MSI shutdown etc, so resume device before shutdown.
Without this patch, a device may not be enumerated after a kexec
because the corresponding bridge is not in D0, so that
configuration space of the device is not accessible.
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
CC: stable@vger.kernel.org # v3.6+
struct pci_dev *pci_dev = to_pci_dev(dev);
struct pci_driver *drv = pci_dev->driver;
struct pci_dev *pci_dev = to_pci_dev(dev);
struct pci_driver *drv = pci_dev->driver;
+ pm_runtime_resume(dev);
+
if (drv && drv->shutdown)
drv->shutdown(pci_dev);
pci_msi_shutdown(pci_dev);
if (drv && drv->shutdown)
drv->shutdown(pci_dev);
pci_msi_shutdown(pci_dev);
* continue to do DMA
*/
pci_disable_device(pci_dev);
* continue to do DMA
*/
pci_disable_device(pci_dev);
-
- /*
- * Devices may be enabled to wake up by runtime PM, but they need not
- * be supposed to wake up the system from its "power off" state (e.g.
- * ACPI S5). Therefore disable wakeup for all devices that aren't
- * supposed to wake up the system at this point. The state argument
- * will be ignored by pci_enable_wake().
- */
- if (!device_may_wakeup(dev))
- pci_enable_wake(pci_dev, PCI_UNKNOWN, false);