From 4a865905f685eaefaedf6ade362323dc52aa703b Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Mon, 16 Mar 2009 22:40:36 +0100 Subject: [PATCH] PCI PM: Make pci_set_power_state() handle devices with no PM support There is a problem with PCI devices without any PM support (either native or through the platform) that pci_set_power_state() always returns error code for them, even if they are being put into D0. However, such devices are always in D0, so pci_set_power_state() should return success when attempting to put such a device into D0. It also should update the current_state field for these devices as appropriate. This modification is necessary so that the standard configuration registers of these devices are successfully restored by pci_restore_standard_config() during the "early" phase of resume. In addition, pci_set_power_state() should check the value of current_state before calling the platform to change the power state of the device to avoid doing that unnecessarily. Signed-off-by: Rafael J. Wysocki Acked-by: Ingo Molnar Acked-by: Jesse Barnes --- Reading git-format-patch failed