irq_procfs: fix divide 0 error

Signed-off-by: ligd <liguiding1@xiaomi.com>
2022-06-22 22:38:19 +08:00 · 2022-06-22 22:38:19 +08:00 · 3bc2131918
parent df365008b2
commit 3bc2131918
1 changed files with 1 additions and 0 deletions
--- a/sched/irq/irq_procfs.c
+++ b/sched/irq/irq_procfs.c
@ -206,6 +206,7 @@ static int irq_callback(int irq, FAR struct irq_info_s *info,
   * rate    = <interrupt-count> * TICKS_PER_SEC / elapsed
   */

+  elapsed = elapsed ? elapsed : 1;
  intpart = (unsigned int)((copy.count * TICK_PER_SEC) / elapsed);
  if (intpart >= 10000)
    {