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

Commit Message

Rafael Wysocki Sept. 9, 2009, 11:36 p.m. UTC

From: Rafael J. Wysocki <[e-mail]>

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 <[e-mail]>
---
 drivers/pci/pci.c               |    1 +
 drivers/pci/pcie/portdrv_core.c |    1 +
 2 files changed, 2 insertions(+)

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Patch

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);
 }
 
 /**