[PATCH] s390: show_cpuinfo fix

Disable preemption in show_cpuinfo to avoid problems and the warning about
smp_processor_id.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 5ba5a5485da9..907d16ac9dc9 100644
--- a/arch/s390/kernel/setup.c
+++ b/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;
 }