watchdog: fix opencoded cpumask_next_wrap() in watchdog_next_cpu()

The dedicated helper is more verbose and efficient comparing to
cpumask_next() followed by cpumask_first().

Signed-off-by: "Yury Norov [NVIDIA]" <yury.norov@gmail.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>

diff --git a/kernel/watchdog_buddy.c b/kernel/watchdog_buddy.c
index 34dbfe0..ee754d7 100644 (file)
--- a/kernel/watchdog_buddy.c
+++ b/kernel/watchdog_buddy.c
@@ -12,10 +12,7 @@ static unsigned int watchdog_next_cpu(unsigned int cpu)
 {
        unsigned int next_cpu;
 
-       next_cpu = cpumask_next(cpu, &watchdog_cpus);
-       if (next_cpu >= nr_cpu_ids)
-               next_cpu = cpumask_first(&watchdog_cpus);
-
+       next_cpu = cpumask_next_wrap(cpu, &watchdog_cpus);
        if (next_cpu == cpu)
                return nr_cpu_ids;