[PATCH] ppc32: #ifdef out ALTIVEC specific code in __switch_to

#ifdef out an ALTIVEC specific tweak in __switch_to()
Signed-off-by: NMarcelo Tosatti <marcelo.tosatti@cyclades.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

arch/ppc/kernel/process.c

@@ -347,11 +347,13 @@ struct task_struct *__switch_to(struct task_struct *prev,
 #endif /* CONFIG_SPE */
 #endif /* CONFIG_SMP */
 
+#ifdef CONFIG_ALTIVEC
 	/* Avoid the trap.  On smp this this never happens since
 	 * we don't set last_task_used_altivec -- Cort
 	 */
 	if (new->thread.regs && last_task_used_altivec == new)
 		new->thread.regs->msr |= MSR_VEC;
+#endif
 #ifdef CONFIG_SPE
 	/* Avoid the trap.  On smp this this never happens since
 	 * we don't set last_task_used_spe