1 files changed, 3 insertions, 1 deletions

diff --git a/arch/i386/pci/pci.h b/arch/i386/pci/pci.h
index 0270c80d99cc..2ce3d44b09d4 100644
--- a/arch/i386/pci/pci.h
+++ b/arch/i386/pci/pci.h
@@ -96,7 +96,9 @@ extern void pcibios_sort(void);
 
 /* pci-mmconfig.c */
 
+/* Verify the first 16 busses. We assume that systems with more busses
+   get MCFG right. */
 #define PCI_MMCFG_MAX_CHECK_BUS 16
 extern DECLARE_BITMAP(pci_mmcfg_fallback_slots, 32*PCI_MMCFG_MAX_CHECK_BUS);
 
-extern int pci_mmcfg_arch_init(void);
+extern int __init pci_mmcfg_arch_init(void);