--- zzzz-none-000/linux-2.6.19.2/include/asm-powerpc/io.h	2007-01-10 19:10:37.000000000 +0000
+++ davinci-8020-5505/linux-2.6.19.2/include/asm-powerpc/io.h	2007-01-11 07:38:19.000000000 +0000
@@ -163,11 +163,8 @@
 
 static inline void mmiowb(void)
 {
-	unsigned long tmp;
-
-	__asm__ __volatile__("sync; li %0,0; stb %0,%1(13)"
-	: "=&r" (tmp) : "i" (offsetof(struct paca_struct, io_sync))
-	: "memory");
+	__asm__ __volatile__ ("sync" : : : "memory");
+	get_paca()->io_sync = 0;
 }
 
 /*