PCI PM: Introduce device flag wakeup_prepared

Introduce a new PCI device flag, wakeup_prepared, to prevent PCI
wake-up preparation code from being executed twice in a row for the
same device and for the same purpose.

Reviewed-by: Matthew Garrett <mjg59@srcf.ucam.org>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/pci.h b/include/linux/pci.h
index d80ed872a3c4..f5c7cd343e56 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -241,6 +241,7 @@ struct pci_dev {
         unsigned int    d1_support:1;   /* Low power state D1 is supported */
         unsigned int    d2_support:1;   /* Low power state D2 is supported */
         unsigned int    no_d1d2:1;      /* Only allow D0 and D3 */
+        unsigned int    wakeup_prepared:1;
 
 #ifdef CONFIG_PCIEASPM
         struct pcie_link_state  *link_state;    /* ASPM link state. */