1 files changed, 5 insertions, 3 deletions

diff --git a/include/asm-x86/e820.h b/include/asm-x86/e820.h
index 16a31e2c7c57..ca433c36af7a 100644
--- a/include/asm-x86/e820.h
+++ b/include/asm-x86/e820.h
@@ -1,5 +1,5 @@
-#ifndef __ASM_E820_H
-#define __ASM_E820_H
+#ifndef ASM_X86__E820_H
+#define ASM_X86__E820_H
 #define E820MAP 0x2d0           /* our map */
 #define E820MAX 128             /* number of entries in E820MAP */
 
@@ -43,6 +43,7 @@
 #define E820_RESERVED   2
 #define E820_ACPI       3
 #define E820_NVS        4
+#define E820_UNUSABLE   5
 
 /* reserved RAM used by kernel itself */
 #define E820_RESERVED_KERN        128
@@ -64,6 +65,7 @@ struct e820map {
 extern struct e820map e820;
 extern struct e820map e820_saved;
 
+extern unsigned long pci_mem_start;
 extern int e820_any_mapped(u64 start, u64 end, unsigned type);
 extern int e820_all_mapped(u64 start, u64 end, unsigned type);
 extern void e820_add_region(u64 start, u64 size, int type);
@@ -140,4 +142,4 @@ extern char *memory_setup(void);
 #define HIGH_MEMORY     (1024*1024)
 #endif /* __KERNEL__ */
 
-#endif  /* __ASM_E820_H */
+#endif /* ASM_X86__E820_H */