1 files changed, 16 insertions, 7 deletions

diff --git a/arch/x86/include/asm/e820.h b/arch/x86/include/asm/e820.h
index 40b4e614fe7..761249e396f 100644
--- a/arch/x86/include/asm/e820.h
+++ b/arch/x86/include/asm/e820.h
@@ -61,6 +61,12 @@ struct e820map {
         struct e820entry map[E820_X_MAX];
 };
 
+#define ISA_START_ADDRESS       0xa0000
+#define ISA_END_ADDRESS         0x100000
+
+#define BIOS_BEGIN              0x000a0000
+#define BIOS_END                0x00100000
+
 #ifdef __KERNEL__
 /* see comment in arch/x86/kernel/e820.c */
 extern struct e820map e820;
@@ -126,15 +132,18 @@ extern void e820_reserve_resources(void);
 extern void e820_reserve_resources_late(void);
 extern void setup_memory_map(void);
 extern char *default_machine_specific_memory_setup(void);
-#endif /* __KERNEL__ */
-#endif /* __ASSEMBLY__ */
 
-#define ISA_START_ADDRESS       0xa0000
-#define ISA_END_ADDRESS         0x100000
-#define is_ISA_range(s, e) ((s) >= ISA_START_ADDRESS && (e) < ISA_END_ADDRESS)
+/*
+ * Returns true iff the specified range [s,e) is completely contained inside
+ * the ISA region.
+ */
+static inline bool is_ISA_range(u64 s, u64 e)
+{
+        return s >= ISA_START_ADDRESS && e <= ISA_END_ADDRESS;
+}
 
-#define BIOS_BEGIN              0x000a0000
-#define BIOS_END                0x00100000
+#endif /* __KERNEL__ */
+#endif /* __ASSEMBLY__ */
 
 #ifdef __KERNEL__
 #include <linux/ioport.h>