[MIPS] Cleanup free_initmem the same way as i386 did.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c
index ad89c442f2998918d52fdac6ad7a98c193fcdfa2..c22308b93ff05ce04aee860042733a63dc2bf713 100644 (file)
--- a/arch/mips/mm/init.c
+++ b/arch/mips/mm/init.c
@@ -276,6 +276,20 @@ void __init mem_init(void)
 }
 #endif /* !CONFIG_NEED_MULTIPLE_NODES */
 
+void free_init_pages(char *what, unsigned long begin, unsigned long end)
+{
+       unsigned long addr;
+
+       for (addr = begin; addr < end; addr += PAGE_SIZE) {
+               ClearPageReserved(virt_to_page(addr));
+               init_page_count(virt_to_page(addr));
+               memset((void *)addr, 0xcc, PAGE_SIZE);
+               free_page(addr);
+               totalram_pages++;
+       }
+       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)
 {
@@ -284,16 +298,7 @@ void free_initrd_mem(unsigned long start, unsigned long end)
        start = (unsigned long)phys_to_virt(CPHYSADDR(start));
        end = (unsigned long)phys_to_virt(CPHYSADDR(end));
 #endif
-       if (start < end)
-               printk(KERN_INFO "Freeing initrd memory: %ldk freed\n",
-                      (end - start) >> 10);
-
-       for (; start < end; start += PAGE_SIZE) {
-               ClearPageReserved(virt_to_page(start));
-               init_page_count(virt_to_page(start));
-               free_page(start);
-               totalram_pages++;
-       }
+       free_init_pages("initrd memory", start, end);
 }
 #endif
 
@@ -301,24 +306,17 @@ extern unsigned long prom_free_prom_memory(void);
 
 void free_initmem(void)
 {
-       unsigned long addr, page, freed;
+       unsigned long start, end, freed;
 
        freed = prom_free_prom_memory();
+       if (freed)
+               printk(KERN_INFO "Freeing firmware memory: %ldk freed\n",freed);
 
-       addr = (unsigned long) &__init_begin;
-       while (addr < (unsigned long) &__init_end) {
+       start = (unsigned long)(&__init_begin);
+       end = (unsigned long)(&__init_end);
 #ifdef CONFIG_64BIT
-               page = PAGE_OFFSET | CPHYSADDR(addr);
-#else
-               page = addr;
+       start = PAGE_OFFSET | CPHYSADDR(start);
+       end = PAGE_OFFSET | CPHYSADDR(end);
 #endif
-               ClearPageReserved(virt_to_page(page));
-               init_page_count(virt_to_page(page));
-               free_page(page);
-               totalram_pages++;
-               freed += PAGE_SIZE;
-               addr += PAGE_SIZE;
-       }
-       printk(KERN_INFO "Freeing unused kernel memory: %ldk freed\n",
-              freed >> 10);
+       free_init_pages("unused kernel memory", start, end);
 }