[PATCH] reorder slow clock source read for clock source watchdog

[Luming Yu]

the clock source watchdog (HPET) in skx is much slower
than the clock source TSC. The long latency in the first
call may trigger a false postive TSC unstable noise.
Let the fast one follows the slow one should fix it.

Signed-off-by: Luming Yu <luming...@intel.com>
Signed-off-by: Yongkai Wu <yongka...@tencent.com>
---
 kernel/time/clocksource.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c
index ffe081623aec..8ea929e50ca6 100644
--- a/kernel/time/clocksource.c
+++ b/kernel/time/clocksource.c
@@ -225,8 +225,8 @@ static void clocksource_watchdog(struct timer_list *unused)
                }
 
                local_irq_disable();
-               csnow = cs->read(cs);
                wdnow = watchdog->read(watchdog);
+               csnow = cs->read(cs);
                local_irq_enable();
 
                /* Clocksource initialized ? */
-- 
2.14.4