On Fri, 2012-11-02 at 10:52 -0600, Bjorn Helgaas wrote: > On Wed, Oct 24, 2012 at 12:54 AM, Huang Ying <ying.huang@xxxxxxxxx> wrote: > > Some actions during shutdown need device to be in D0 state, such as > > MSI shutdown etc, so resume device before shutdown. > > Is there a problem report or bugzilla for this issue? What are the > symptoms by which a user could figure out that he needs this fix? No bugzilla for this issue. This issue will cause the corresponding device lost in kexeced kernel. Best Regards, Huang Ying > Should this be put in the stable tree as well? If so, for v3.6 only? > > > Signed-off-by: Huang Ying <ying.huang@xxxxxxxxx> > > --- > > drivers/pci/pci-driver.c | 12 ++---------- > > 1 file changed, 2 insertions(+), 10 deletions(-) > > > > --- a/drivers/pci/pci-driver.c > > +++ b/drivers/pci/pci-driver.c > > @@ -398,6 +398,8 @@ static void pci_device_shutdown(struct d > > 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); > > @@ -408,16 +410,6 @@ static void pci_device_shutdown(struct d > > * 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); > > } > > > > #ifdef CONFIG_PM -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
