diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c
index bbb196ad5f26..8a038b30d3c4 100644
--- a/arch/mips/mm/init.c
+++ b/arch/mips/mm/init.c
@@ -504,14 +504,6 @@ void free_init_pages(const char *what, unsigned long begin, unsigned long end)
 	printk(KERN_INFO "Freeing %s: %ldk freed\n", what, (end - begin) >> 10);
 }
 
-#ifdef CONFIG_BLK_DEV_INITRD
-void free_initrd_mem(unsigned long start, unsigned long end)
-{
-	free_reserved_area((void *)start, (void *)end, POISON_FREE_INITMEM,
-			   "initrd");
-}
-#endif
-
 void (*free_init_pages_eva)(void *begin, void *end) = NULL;
 
 void __ref free_initmem(void)
diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c
index 7cf48eefec8f..5f48fc7e61d5 100644
--- a/arch/s390/mm/init.c
+++ b/arch/s390/mm/init.c
@@ -157,14 +157,6 @@ void free_initmem(void)
 	free_initmem_default(POISON_FREE_INITMEM);
 }
 
-#ifdef CONFIG_BLK_DEV_INITRD
-void __init free_initrd_mem(unsigned long start, unsigned long end)
-{
-	free_reserved_area((void *)start, (void *)end, POISON_FREE_INITMEM,
-			   "initrd");
-}
-#endif
-
 unsigned long memory_block_size_bytes(void)
 {
 	/*
diff --git a/arch/sparc/mm/init_32.c b/arch/sparc/mm/init_32.c
index a8ff29821bdb..417f89d5e0b2 100644
--- a/arch/sparc/mm/init_32.c
+++ b/arch/sparc/mm/init_32.c
@@ -299,14 +299,6 @@ void free_initmem (void)
 	free_initmem_default(POISON_FREE_INITMEM);
 }
 
-#ifdef CONFIG_BLK_DEV_INITRD
-void free_initrd_mem(unsigned long start, unsigned long end)
-{
-	free_reserved_area((void *)start, (void *)end, POISON_FREE_INITMEM,
-			   "initrd");
-}
-#endif
-
 void sparc_flush_page_to_ram(struct page *page)
 {
 	unsigned long vaddr = (unsigned long)page_address(page);
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index bc2aaa47bc8a..4b099dd7a767 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -2572,14 +2572,6 @@ void free_initmem(void)
 	}
 }
 
-#ifdef CONFIG_BLK_DEV_INITRD
-void free_initrd_mem(unsigned long start, unsigned long end)
-{
-	free_reserved_area((void *)start, (void *)end, POISON_FREE_INITMEM,
-			   "initrd");
-}
-#endif
-
 pgprot_t PAGE_KERNEL __read_mostly;
 EXPORT_SYMBOL(PAGE_KERNEL);
 
diff --git a/init/initramfs.c b/init/initramfs.c
index fcb759a106be..435a428c2af1 100644
--- a/init/initramfs.c
+++ b/init/initramfs.c
@@ -529,7 +529,8 @@ extern unsigned long __initramfs_size;
 
 void __weak free_initrd_mem(unsigned long start, unsigned long end)
 {
-	free_reserved_area((void *)start, (void *)end, -1, "initrd");
+	free_reserved_area((void *)start, (void *)end, POISON_FREE_INITMEM,
+			"initrd");
 }
 
 #ifdef CONFIG_KEXEC_CORE