mm/c6x: use common help functions to free reserved pages

Use common help functions to free reserved pages.
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Aurelien Jacquiot <a-jacquiot@ti.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/c6x/mm/init.c

@@ -77,37 +77,11 @@ void __init mem_init(void)
 #ifdef CONFIG_BLK_DEV_INITRD
 void __init free_initrd_mem(unsigned long start, unsigned long end)
 {
-	int pages = 0;
-	for (; start < end; start += PAGE_SIZE) {
-		ClearPageReserved(virt_to_page(start));
-		init_page_count(virt_to_page(start));
-		free_page(start);
-		totalram_pages++;
-		pages++;
-	}
-	printk(KERN_INFO "Freeing initrd memory: %luk freed\n",
-	       (pages * PAGE_SIZE) >> 10);
+	free_reserved_area(start, end, 0, "initrd");
 }
 #endif
 
 void __init free_initmem(void)
 {
-	unsigned long addr;
-
-	/*
-	 * The following code should be cool even if these sections
-	 * are not page aligned.
-	 */
-	addr = PAGE_ALIGN((unsigned long)(__init_begin));
-
-	/* next to check that the page we free is not a partial page */
-	for (; addr + PAGE_SIZE < (unsigned long)(__init_end);
-	     addr += PAGE_SIZE) {
-		ClearPageReserved(virt_to_page(addr));
-		init_page_count(virt_to_page(addr));
-		free_page(addr);
-		totalram_pages++;
-	}
-	printk(KERN_INFO "Freeing unused kernel memory: %dK freed\n",
-	       (int) ((addr - PAGE_ALIGN((long) &__init_begin)) >> 10));
+	free_initmem_default(0);
 }