On Mon, 2009-08-17 at 08:20 +0800, Rafael J. Wysocki wrote:> Set async_suspend for all PCI devices and PCIe port services.> Alan said that we can not break the resume order of the uhci/ehci hostcontrollers on some platforms. For example,00:1a.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCIController #4 (rev 02)00:1a.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCIController #5 (rev 02)00:1a.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCIController #2 (rev 02)00:1a.7 must be resumed after 00:1a.0 and 00:1a.1 please refer to this thread:http://marc.info/?l=linux-acpi&m=122996117918188&w=2 So I'm afraid we can not suspend/resume the PCI devices in parallel,unless we add this off-tree dependency at the same time. thanks,rui> ---> drivers/input/serio/i8042.c | 2 ++> drivers/pci/pci.c | 2 ++> drivers/pci/pcie/portdrv_core.c | 1 +> 3 files changed, 5 insertions(+)> > Index: linux-2.6/drivers/pci/pci.c> ===================================================================> --- linux-2.6.orig/drivers/pci/pci.c> +++ linux-2.6/drivers/pci/pci.c> @@ -1409,6 +1409,8 @@ void pci_pm_init(struct pci_dev *dev)> } else {> dev->pme_support = 0;> }> +> + device_enable_async_suspend(&dev->dev, true);> }> > /**> 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);> }> > /** _______________________________________________linux-pm mailing listlinux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx://lists.linux-foundation.org/mailman/listinfo/linux-pm
