>From f701d50e53d794309d92980ffa77d54606d44601 Mon Sep 17 00:00:00 2001 From: Alek Du <alek.du@xxxxxxxxx> Date: Wed, 5 Aug 2009 15:25:26 +0800 Subject: [PATCH] pci: check saved state before restore Without the check, the config space may be filled with zeros. Though the driver should try to avoid call restoring before saving, but the pci layer also should check this. Signed-off-by: Alek Du <alek.du@xxxxxxxxx> --- drivers/pci/pci.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index dbd0f94..7b70312 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -846,6 +846,8 @@ pci_restore_state(struct pci_dev *dev) int i; u32 val; + if (!dev->state_saved) + return 0; /* PCI Express register must be restored first */ pci_restore_pcie_state(dev); -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
