diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index d3f6c5f6d3b102b0cf0cc4f63f12ab7593e6ad21..b01fa0d0dc7c5447e3aabff0fbf1ace7d9c22d6e 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -360,7 +360,7 @@ int __init sanitize_e820_map(struct e820entry *biosmap, int max_nr_map,
 	return 0;
 }
 
-static int __init __copy_e820_map(struct e820entry *biosmap, int nr_map)
+static int __init __append_e820_map(struct e820entry *biosmap, int nr_map)
 {
 	while (nr_map) {
 		u64 start = biosmap->addr;
@@ -389,13 +389,13 @@ static int __init __copy_e820_map(struct e820entry *biosmap, int nr_map)
  * will have given us a memory map that we can use to properly
  * set up memory.  If we aren't, we'll fake a memory map.
  */
-int __init copy_e820_map(struct e820entry *biosmap, int nr_map)
+static int __init append_e820_map(struct e820entry *biosmap, int nr_map)
 {
 	/* Only one memory region (or negative)? Ignore it */
 	if (nr_map < 2)
 		return -1;
 
-	return __copy_e820_map(biosmap, nr_map);
+	return __append_e820_map(biosmap, nr_map);
 }
 
 u64 __init e820_update_range(u64 start, u64 size, unsigned old_type,
@@ -583,7 +583,7 @@ void __init parse_e820_ext(struct setup_data *sdata, unsigned long pa_data)
 	if (map_len > PAGE_SIZE)
 		sdata = early_ioremap(pa_data, map_len);
 	extmap = (struct e820entry *)(sdata->data);
-	__copy_e820_map(extmap, entries);
+	__append_e820_map(extmap, entries);
 	sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
 	if (map_len > PAGE_SIZE)
 		early_iounmap(sdata, map_len);
@@ -1247,7 +1247,8 @@ char *__init default_machine_specific_memory_setup(void)
 			ARRAY_SIZE(boot_params.e820_map),
 			&new_nr);
 	boot_params.e820_entries = new_nr;
-	if (copy_e820_map(boot_params.e820_map, boot_params.e820_entries) < 0) {
+	if (append_e820_map(boot_params.e820_map, boot_params.e820_entries)
+	  < 0) {
 		u64 mem_size;
 
 		/* compare results from other methods and take the greater */
diff --git a/include/asm-x86/e820.h b/include/asm-x86/e820.h
index 05a7dc33334c9525867e113f2751d0b26230e868..4b26604b3c1951ddb70ae064714321fd6f1e86a7 100644
--- a/include/asm-x86/e820.h
+++ b/include/asm-x86/e820.h
@@ -67,7 +67,6 @@ extern void e820_add_region(u64 start, u64 size, int type);
 extern void e820_print_map(char *who);
 extern int
 sanitize_e820_map(struct e820entry *biosmap, int max_nr_map, int *pnr_map);
-extern int copy_e820_map(struct e820entry *biosmap, int nr_map);
 extern u64 e820_update_range(u64 start, u64 size, unsigned old_type,
 			       unsigned new_type);
 extern u64 e820_remove_range(u64 start, u64 size, unsigned old_type,