--- zzzz-none-000/linux-2.6.19.2/include/asm-x86_64/system.h	2007-01-10 19:10:37.000000000 +0000
+++ davinci-8020-5505/linux-2.6.19.2/include/asm-x86_64/system.h	2007-01-19 14:42:56.000000000 +0000
@@ -248,7 +248,7 @@
 
 void cpu_idle_wait(void);
 
-extern unsigned long arch_align_stack(unsigned long sp);
+#define arch_align_stack(x) (x)
 extern void free_init_pages(char *what, unsigned long begin, unsigned long end);
 
 #endif