Gcc 4.0 fixes.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/mm/c-sb1.c b/arch/mips/mm/c-sb1.c
index 502f68c..e65b1bb 100644
--- a/arch/mips/mm/c-sb1.c
+++ b/arch/mips/mm/c-sb1.c
@@ -235,7 +235,7 @@
 /*
  * Invalidate all caches on this CPU
  */
-static void local_sb1___flush_cache_all(void)
+static void __attribute_used__ local_sb1___flush_cache_all(void)
 {
 	__sb1_writeback_inv_dcache_all();
 	__sb1_flush_icache_all();