From a3646986ea9ba6315f908432694cc647e12ca9cf Mon Sep 17 00:00:00 2001
From: ligd <liguiding@fishsemi.com>
Date: Tue, 12 Nov 2019 08:18:32 -0600
Subject: [PATCH] drivers/power/activity_governor.c:  Fix timer can't start
 when meet very small pmtick.

---
 drivers/power/activity_governor.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/power/activity_governor.c b/drivers/power/activity_governor.c
index 121a6ece97b..96ffa4eeefe 100644
--- a/drivers/power/activity_governor.c
+++ b/drivers/power/activity_governor.c
@@ -594,12 +594,16 @@ static void governor_timer(int domain)
       pdomstate->wdog = wd_create();
     }
 
-  if (state < PM_SLEEP && !pdom->stay[pdom->state] &&
-      pmtick[state])
+  if (state < PM_SLEEP && !pdom->stay[pdom->state])
     {
       int delay = pmtick[state] + pdomstate->btime - clock_systimer();
       int left  = wd_gettime(pdomstate->wdog);
 
+      if (delay <= 0)
+        {
+          delay = 1;
+        }
+
       if (!WDOG_ISACTIVE(pdomstate->wdog) || abs(delay - left) > PM_TIMER_GAP)
         {
           wd_start(pdomstate->wdog, delay, governor_timer_cb, 0);