From: Guo Ren <ren_guo@c-sky.com>
Date: Thu, 20 Dec 2018 07:21:41 +0000 (+0800)
Subject: clocksource/drivers/c-sky: fixup qemu fail to bootup sometimes.
X-Git-Tag: v5.0-rc1~37^2~9
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=1d95fe4d3de42e915bc22d5fd6cd4de103c5e517;p=linux.git

clocksource/drivers/c-sky: fixup qemu fail to bootup sometimes.

Timer startup must after timer_irq_enable. For qemu, timer tick
irq hanppens but irq not enable, so it will cause qemu boot failed.

Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Tested-by: Liu Zhiwei <zhiwei_liu@c-sky.com>
---

diff --git a/drivers/clocksource/timer-mp-csky.c b/drivers/clocksource/timer-mp-csky.c
index a8acc431a774..3cb6dbc88b6d 100644
--- a/drivers/clocksource/timer-mp-csky.c
+++ b/drivers/clocksource/timer-mp-csky.c
@@ -79,11 +79,11 @@ static int csky_mptimer_starting_cpu(unsigned int cpu)
 
 	to->clkevt.cpumask = cpumask_of(cpu);
 
+	enable_percpu_irq(csky_mptimer_irq, 0);
+
 	clockevents_config_and_register(&to->clkevt, timer_of_rate(to),
 					2, ULONG_MAX);
 
-	enable_percpu_irq(csky_mptimer_irq, 0);
-
 	return 0;
 }