[PATCH] PCI: MSI(X) save/restore for suspend/resume
Add MSI(X) configure sapce save/restore in generic PCI helper.
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index 8f3fb47..30630cb 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -55,6 +55,17 @@
static inline void disable_msi_mode(struct pci_dev *dev, int pos, int type) { }
static inline void pci_no_msi(void) { }
#endif
+#if defined(CONFIG_PCI_MSI) && defined(CONFIG_PM)
+int pci_save_msi_state(struct pci_dev *dev);
+int pci_save_msix_state(struct pci_dev *dev);
+void pci_restore_msi_state(struct pci_dev *dev);
+void pci_restore_msix_state(struct pci_dev *dev);
+#else
+static inline int pci_save_msi_state(struct pci_dev *dev) { return 0; }
+static inline int pci_save_msix_state(struct pci_dev *dev) { return 0; }
+static inline void pci_restore_msi_state(struct pci_dev *dev) {}
+static inline void pci_restore_msix_state(struct pci_dev *dev) {}
+#endif
extern int pcie_mch_quirk;
extern struct device_attribute pci_dev_attrs[];