Hi, I've recently discovered that pci_set_power_state() calls the platform callback intended for changing the state of the device after it has done that using the native PCI mechanism. In my opinion this is not correct, because, for example, if the device is being put into D0 from a low power state, it may require some platform-controlled power resources to be turned on before that (in theory). The following series of patches changes this function so that the platform callback is performed first and then the native mechanism is used. Additionally, however, it checks if the devices is power manageable by the platform and only in that case the platform callback is invoked. For this purpose, I needed to add an ACPI function allowing PCI to check the power manageability of given device. Comments welcome. Thanks, Rafael _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
