From e36c455c2f5fee08fed395e94c7ab156cd159360 Mon Sep 17 00:00:00 2001 From: Pavel Machek Date: Tue, 16 Jan 2007 12:17:13 +0100 Subject: [PATCH] PCI: power management: remove noise on non-manageable hw Return early from pci_set_power_state() if hardware does not support power management. This way, we do not generate noise in the logs. Signed-off-by: Pavel Machek Signed-off-by: Greg Kroah-Hartman --- drivers/pci/pci.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index e91dcc05b790..7ae709024456 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -392,6 +392,14 @@ pci_set_power_state(struct pci_dev *dev, pci_power_t state) if (state > PCI_D3hot) state = PCI_D3hot; + /* + * If the device or the parent bridge can't support PCI PM, ignore + * the request if we're doing anything besides putting it into D0 + * (which would only happen on boot). + */ + if ((state == PCI_D1 || state == PCI_D2) && pci_no_d1d2(dev)) + return 0; + /* Validate current state: * Can enter D0 from any state, but if we can only go deeper * to sleep if we're already in a low power state @@ -403,13 +411,6 @@ pci_set_power_state(struct pci_dev *dev, pci_power_t state) } else if (dev->current_state == state) return 0; /* we're already there */ - /* - * If the device or the parent bridge can't support PCI PM, ignore - * the request if we're doing anything besides putting it into D0 - * (which would only happen on boot). - */ - if ((state == PCI_D1 || state == PCI_D2) && pci_no_d1d2(dev)) - return 0; /* find PCI PM capability in list */ pm = pci_find_capability(dev, PCI_CAP_ID_PM);