[linux-pm] [PATCH 2/7] PCI PM: Check if the state has been saved before trying to restore it
Rafael J. Wysocki
rjw at sisk.pl
Tue Feb 3 16:57:22 PST 2009
From: Rafael J. Wysocki <rjw at sisk.pl>
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 at sisk.pl>
Reported-By: Benjamin Herrenschmidt <benh at kernel.crashing.org>
---
drivers/pci/pci.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Index: linux-2.6/drivers/pci/pci.c
===================================================================
--- linux-2.6.orig/drivers/pci/pci.c
+++ linux-2.6/drivers/pci/pci.c
@@ -1421,7 +1421,7 @@ int pci_restore_standard_config(struct p
dev->current_state = PCI_D0;
Restore:
- return pci_restore_state(dev);
+ return dev->state_saved ? pci_restore_state(dev) : 0;
}
/**
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