[PATCH 3.16 044/192] x86/nmi: Fix timeout test in test_nmi_ipi()

Ben Hutchings
2017-10-09T13:43:41Z

From: Dan Carpenter <dan.carpenter@oracle.com>

commit c133c7615751008f6c32ccae7cdfc5ff6e989c35 upstream.

We're supposed to exit the loop with "timeout" set to zero.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Don Zickus <dzickus@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: kernel-janitors@vger.kernel.org
Fixes: 99e8b9ca90d6 ("x86, NMI: Add NMI IPI selftest")
Link: http://lkml.kernel.org/r/20170619105304.GA23995@elgon.mountain
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/x86/kernel/nmi_selftest.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/x86/kernel/nmi_selftest.c
+++ b/arch/x86/kernel/nmi_selftest.c
@@ -78,7 +78,7 @@ static void __init test_nmi_ipi(struct c

/* Don't wait longer than a second */
timeout = USEC_PER_SEC;
- while (!cpumask_empty(mask) && timeout--)
+ while (!cpumask_empty(mask) && --timeout)
udelay(1);

/* What happens if we timeout, do we still unregister?? */