Commit cc2893b6 authored Apr 22, 2010 by Matthew Garrett Committed by Jesse Barnes Apr 22, 2010

PCI: Ensure we re-enable devices on resume



If the firmware puts a device back into D0 state at resume time, we'll
update its state in resume_noirq and thus skip the platform resume code.
Calling that code twice should be safe and we ought to avoid getting to
that point anyway, so remove the check and also allow the platform pci
code to be called for D0.

Fixes USB not being powered after resume on recent Lenovo machines.

Acked-by: Alex Chiang <achiang@canonical.com>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

parent 66528fdd

drivers/pci/pci.c

+1 −5

Original line number	Diff line number	Diff line
		@@ -679,7 +679,7 @@ static void __pci_start_power_transition(struct pci_dev *dev, pci_power_t state)
		*/
		int __pci_complete_power_transition(struct pci_dev *dev, pci_power_t state)
		{
		return state > PCI_D0 ?
		return state >= PCI_D0 ?
		pci_platform_power_transition(dev, state) : -EINVAL;
		}
		EXPORT_SYMBOL_GPL(__pci_complete_power_transition);
		@@ -716,10 +716,6 @@ int pci_set_power_state(struct pci_dev *dev, pci_power_t state)
		*/
		return 0;

		/* Check if we're already there */
		if (dev->current_state == state)
		return 0;

		__pci_start_power_transition(dev, state);

		/* This device is quirked not to be put into D3, so

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