linux/drivers/pci
Rafael J. Wysocki 4a865905f6 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 <rjw@sisk.pl>
Acked-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-03-30 21:46:56 +02:00
..
hotplug pci: struct device - replace bus_id with dev_name(), dev_set_name() 2009-03-24 16:38:21 -07:00
pcie PCIe: portdrv: call pci_disable_device during remove 2009-03-12 15:42:35 -04:00
.gitignore
access.c
bus.c
dmar.c x86, dmar: use atomic allocations for QI and Intr-remapping init 2009-03-17 16:49:30 -07:00
hotplug-pci.c
hotplug.c
htirq.c
intel-iommu.c x86, dmar: start with sane state while enabling dma and interrupt-remapping 2009-03-17 15:39:58 -07:00
intr_remapping.c Merge branch 'linus' into x86/core 2009-03-28 22:27:45 +01:00
intr_remapping.h
iova.c
irq.c
Kconfig
Makefile
msi.c PCI/MSI: fix msi_mask() shift fix 2009-02-13 11:59:03 -08:00
msi.h
pci-acpi.c
pci-driver.c PCI PM: Put devices into low power states during late suspend (rev. 2) 2009-03-30 21:46:55 +02:00
pci-stub.c
pci-sysfs.c
pci.c PCI PM: Make pci_set_power_state() handle devices with no PM support 2009-03-30 21:46:56 +02:00
pci.h PCI PM: Move pci_restore_standard_config to pci-driver.c 2009-03-30 21:46:55 +02:00
probe.c
proc.c
quirks.c pci: Fix typo in message while disabling HT MSI mapping 2009-03-12 15:42:29 -04:00
remove.c
rom.c PCI: fix rom.c kernel-doc warning 2009-02-13 12:01:56 -08:00
search.c
setup-bus.c
setup-irq.c
setup-res.c
slot.c
syscall.c