PCI/PM: Allow PCI devices to be put into D3cold during system suspend

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@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 2c9ac70..87680bc 100644 (file)
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -1907,10 +1907,6 @@ int pci_prepare_to_sleep(struct pci_dev *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);