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PCI PM: Check if the state has been saved before trying to restore it

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Check if the standard configuration registers of a PCI device have
been saved during suspend before trying to restore them during
resume.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Reported-By: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Rafael J. Wysocki 2009-02-04 01:57:22 +01:00 committed by Jesse Barnes
parent ddb7c9d29f
commit 144a76bc88
1 changed files with 1 additions and 1 deletions
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drivers/pci/pci.c
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@ -1421,7 +1421,7 @@ int pci_restore_standard_config(struct pci_dev *dev)
dev->current_state = PCI_D0; dev->current_state = PCI_D0;
Restore: Restore:
return pci_restore_state(dev); return dev->state_saved ? pci_restore_state(dev) : 0;
} }
/** /**