x86: fix kernel crash on geode devices (#21667)

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 48428
lede-17.01
Felix Fietkau 2016-01-21 13:28:25 +00:00
parent c5db626ac5
commit c26dec971e
1 changed files with 12 additions and 0 deletions

View File

@ -0,0 +1,12 @@
--- a/drivers/clocksource/cs5535-clockevt.c
+++ b/drivers/clocksource/cs5535-clockevt.c
@@ -129,7 +129,8 @@ static irqreturn_t mfgpt_tick(int irq, v
cs5535_mfgpt_write(cs5535_event_clock, MFGPT_REG_SETUP,
MFGPT_SETUP_CNTEN | MFGPT_SETUP_CMP2);
- cs5535_clockevent.event_handler(&cs5535_clockevent);
+ if (cs5535_clockevent.event_handler)
+ cs5535_clockevent.event_handler(&cs5535_clockevent);
return IRQ_HANDLED;
}