[PATCH 2/2] [S390] irq: fix show_interrupts() vs cpu hotplug

[Yong Zhang]

The current usage of get_online_cpus()/put_online_cpus()
in show_interrupts() is not correct since show_interrupts()
will be called nr_irqs times, during that period, cpu hotplug
could also happen.
Since have moved the protection to upper(patch#1), the pair of
get_online_cpus()/put_online_cpus() could be removed here.

Signed-off-by: Yong Zhang <yong.zhang0@xxxxxxxxx>
Cc: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Cc: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
---
 arch/s390/kernel/irq.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)

diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c
index e3264f6..57c036d 100644
--- a/arch/s390/kernel/irq.c
+++ b/arch/s390/kernel/irq.c
@@ -63,7 +63,6 @@ int show_interrupts(struct seq_file *p, void *v)
 {
 	int i = *(loff_t *) v, j;
 
-	get_online_cpus();
 	if (i == 0) {
 		seq_puts(p, "           ");
 		for_each_online_cpu(j)
@@ -83,7 +82,6 @@ int show_interrupts(struct seq_file *p, void *v)
 			seq_printf(p, "  %s", intrclass_names[i].desc);
                 seq_putc(p, '\n');
         }
-	put_online_cpus();
         return 0;
 }
 
-- 
1.7.4.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/