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- From 9d4cba66a74cbdf25f43a7a8cc360370214ba5fc Mon Sep 17 00:00:00 2001
- From: "Joe.C" <[email protected]>
- Date: Fri, 1 May 2015 15:43:24 +0800
- Subject: [PATCH 39/76] clocksource: mediatek: Don't run event_handler if it
- is NULL
- Spurious timer interrupt is noticed in mtk timer and cause kernel
- crash. In mtk_timer_interrupt(), only run event_handler if it is
- not NULL.
- Signed-off-by: Yingjoe Chen <[email protected]>
- ---
- drivers/clocksource/mtk_timer.c | 3 ++-
- 1 file changed, 2 insertions(+), 1 deletion(-)
- --- a/drivers/clocksource/mtk_timer.c
- +++ b/drivers/clocksource/mtk_timer.c
- @@ -143,7 +143,8 @@ static irqreturn_t mtk_timer_interrupt(i
-
- /* Acknowledge timer0 irq */
- writel(GPT_IRQ_ACK(GPT_CLK_EVT), evt->gpt_base + GPT_IRQ_ACK_REG);
- - evt->dev.event_handler(&evt->dev);
- + if (evt->dev.event_handler)
- + evt->dev.event_handler(&evt->dev);
-
- return IRQ_HANDLED;
- }
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