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archive/target/linux/x86/patches-4.4/100-fix_cs5535_clockevt.patch
Felix Fietkau e386c37d0a x86: fix kernel crash on geode devices (#21667)
Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 48428
2016-01-21 13:28:25 +00:00

13 lines
431 B
Diff

--- 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;
}