--- linux-2.6.16.20/arch/sh/kernel/sys_sh.c_orig	2006-06-09 00:00:18.000000000 +0000
+++ linux-2.6.16.20/arch/sh/kernel/sys_sh.c	2006-06-09 00:02:24.000000000 +0000
@@ -31,7 +31,7 @@
  */
 asmlinkage int sys_pipe(unsigned long r4, unsigned long r5,
 	unsigned long r6, unsigned long r7,
-	struct pt_regs regs)
+	volatile struct pt_regs regs)
 {
 	int fd[2];
 	int error;