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    Subject[PATCH 4/9] PM: Allow PCI devices to suspend/resume asynchronously
    Date
    From: Rafael J. Wysocki <rjw@sisk.pl>

    Set async_suspend for all PCI devices and PCIe port services, so that
    they can be suspended and resumed asynchronously with other devices
    they don't depend on in a known way (i.e. devices which are not their
    parents or children and to which they are not connected via struct
    pm_link objects).

    Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
    ---
    drivers/pci/pci.c | 1 +
    drivers/pci/pcie/portdrv_core.c | 1 +
    2 files changed, 2 insertions(+)

    Index: linux-2.6/drivers/pci/pci.c
    ===================================================================
    --- linux-2.6.orig/drivers/pci/pci.c
    +++ linux-2.6/drivers/pci/pci.c
    @@ -1373,6 +1373,7 @@ void pci_pm_init(struct pci_dev *dev)
    int pm;
    u16 pmc;

    + device_enable_async_suspend(&dev->dev, true);
    dev->wakeup_prepared = false;
    dev->pm_cap = 0;

    Index: linux-2.6/drivers/pci/pcie/portdrv_core.c
    ===================================================================
    --- linux-2.6.orig/drivers/pci/pcie/portdrv_core.c
    +++ linux-2.6/drivers/pci/pcie/portdrv_core.c
    @@ -280,6 +280,7 @@ static void pcie_device_init(struct pci_
    dev_set_name(device, "%s:pcie%02x",
    pci_name(parent), get_descriptor_id(port_type, service_type));
    device->parent = &parent->dev;
    + device_enable_async_suspend(device, true);
    }

    /**

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