[PATCH] s390: show_cpuinfo fix

Disable preemption in show_cpuinfo to avoid problems and the warning about
smp_processor_id.
Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

arch/s390/kernel/setup.c

@@ -634,6 +634,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
         struct cpuinfo_S390 *cpuinfo;
 	unsigned long n = (unsigned long) v - 1;
 
+	preempt_disable();
 	if (!n) {
 		seq_printf(m, "vendor_id       : IBM/S390\n"
 			       "# processors    : %i\n"
@@ -658,6 +659,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 			       cpuinfo->cpu_id.ident,
 			       cpuinfo->cpu_id.machine);
 	}
+	preempt_enable();
         return 0;
 }