diff --git a/arch/arm/boot/compressed/decompress.c b/arch/arm/boot/compressed/decompress.c
index a2ac3fe7dbf8ab4e355e0ce43147d0fd689d6ebe..c16c1829a5e4f8732033ea18c5de327aa2eb2878 100644
--- a/arch/arm/boot/compressed/decompress.c
+++ b/arch/arm/boot/compressed/decompress.c
@@ -6,10 +6,7 @@
 #include <linux/stddef.h>	/* for NULL */
 #include <linux/linkage.h>
 #include <asm/string.h>
-
-extern unsigned long free_mem_ptr;
-extern unsigned long free_mem_end_ptr;
-extern void error(char *);
+#include "misc.h"
 
 #define STATIC static
 #define STATIC_RW_DATA	/* non-static please */
diff --git a/arch/arm/boot/compressed/misc.c b/arch/arm/boot/compressed/misc.c
index 4a247acd1b96818d762e5042edb0f30ec5db11bf..79f56c5a9fe5721a13ddbfbc6b88b6ec1640d24b 100644
--- a/arch/arm/boot/compressed/misc.c
+++ b/arch/arm/boot/compressed/misc.c
@@ -22,9 +22,9 @@ unsigned int __machine_arch_type;
 #include <linux/compiler.h>	/* for inline */
 #include <linux/types.h>
 #include <linux/linkage.h>
+#include "misc.h"
 
 static void putstr(const char *ptr);
-extern void error(char *x);
 
 #include CONFIG_UNCOMPRESS_INCLUDE
 
diff --git a/arch/arm/boot/compressed/misc.h b/arch/arm/boot/compressed/misc.h
new file mode 100644
index 0000000000000000000000000000000000000000..c958dccd1d97c1b833b157e85d11aff4f2909acf
--- /dev/null
+++ b/arch/arm/boot/compressed/misc.h
@@ -0,0 +1,10 @@
+#ifndef MISC_H
+#define MISC_H
+
+#include <linux/compiler.h>
+
+void error(char *x) __noreturn;
+extern unsigned long free_mem_ptr;
+extern unsigned long free_mem_end_ptr;
+
+#endif