From: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> Commit 448bd857d48e (PCI/PM: add PCIe runtime D3cold support) added a check to prevent PCI devices from being put into D3cold during system suspend without giving any particular reason. Also the check isn't really necessary, because acpi_pci_set_power_state() maps PCI_D3hot to ACPI_STATE_D3_COLD anyway. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> --- Ying notices that acpi_pci_set_power_state() maps PCI D3hot to ACPI D3cold, so the check actually isn't effective even, but that means that the second part of my original changelog was in fact incorrect. --- drivers/pci/pci.c | 4 ---- 1 file changed, 4 deletions(-) Index: linux-pm/drivers/pci/pci.c =================================================================== --- linux-pm.orig/drivers/pci/pci.c +++ linux-pm/drivers/pci/pci.c @@ -1907,10 +1907,6 @@ int pci_prepare_to_sleep(struct pci_dev if (target_state == PCI_POWER_ERROR) return -EIO; - /* D3cold during system suspend/hibernate is not supported */ - if (target_state > PCI_D3hot) - target_state = PCI_D3hot; - pci_enable_wake(dev, target_state, device_may_wakeup(&dev->dev)); error = pci_set_power_state(dev, target_state); -- 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
