[PATCH 4/9] PM: Allow PCI devices to suspend/resume asynchronously

Rafael J. Wysocki
2009-09-09T23:41:56Z

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);
}

/**