On Monday, February 24, 2014 01:58:05 PM Bjorn Helgaas wrote: > On Sun, Feb 23, 2014 at 4:21 PM, Rafael J. Wysocki <rjw@xxxxxxxxxxxxx> wrote: > > From: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> > > > > Runtime-suspended devices are resumed during system suspend by > > pci_pm_prepare() for two reasons: First, because they may need > > to be reprogrammed in order to change their wakeup settings and, > > second, because they may need to be operatonal for their children > > to be successfully suspended. That is a problem, though, if there > > are many runtime-suspended devices that need to be resumed this > > way during system suspend, because the .prepare() PM callbacks of > > devices are executed sequentially and the times taken by them > > accumulate, which may increase the total system suspend time quite > > a bit. > > > > For this reason, move the resume of runtime-suspended devices up > > to the next phase of device suspend (during system suspend), except > > for the ones that have power.ignore_children set. The exception is > > made, because the devices with power.ignore_children set may still > > be necessary for their children to be successfully suspended (during > > system suspend) and they won't be resumed automatically as a result > > of the runtime resume of their children. > > > > Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> > > Acked-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx> > > You can merge these two via your tree if you want. I don't have any > changes queued up for pci-driver.c. I will, thanks! Rafael -- 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
