--- zzzz-none-000/linux-2.6.19.2/arch/mips/kernel/head.S	2007-01-10 19:10:37.000000000 +0000
+++ davinci-8020-5505/linux-2.6.19.2/arch/mips/kernel/head.S	2007-01-11 07:38:19.000000000 +0000
@@ -189,8 +189,7 @@
 
 	MTC0		zero, CP0_CONTEXT	# clear context register
 	PTR_LA		$28, init_thread_union
-	PTR_LI		sp, _THREAD_SIZE - 32
-	PTR_ADDU	sp, $28
+	PTR_ADDIU	sp, $28, _THREAD_SIZE - 32
 	set_saved_sp	sp, t0, t1
 	PTR_SUBU	sp, 4 * SZREG		# init stack pointer