diff options
Diffstat (limited to 'target/linux/mediatek/patches/0039-clocksource-mediatek-Don-t-run-event_handler-if-it-i.patch')
| -rw-r--r-- | target/linux/mediatek/patches/0039-clocksource-mediatek-Don-t-run-event_handler-if-it-i.patch | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/target/linux/mediatek/patches/0039-clocksource-mediatek-Don-t-run-event_handler-if-it-i.patch b/target/linux/mediatek/patches/0039-clocksource-mediatek-Don-t-run-event_handler-if-it-i.patch new file mode 100644 index 0000000..aabe849 --- /dev/null +++ b/target/linux/mediatek/patches/0039-clocksource-mediatek-Don-t-run-event_handler-if-it-i.patch @@ -0,0 +1,32 @@ +From 9d4cba66a74cbdf25f43a7a8cc360370214ba5fc Mon Sep 17 00:00:00 2001 +From: "Joe.C" <yingjoe.chen@mediatek.com> +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 <yingjoe.chen@mediatek.com> +--- + drivers/clocksource/mtk_timer.c | 3 ++- + 1 file changed, 2 insertions(+), 1 deletion(-) + +diff --git a/drivers/clocksource/mtk_timer.c b/drivers/clocksource/mtk_timer.c +index 68ab423..85e0ab5 100644 +--- a/drivers/clocksource/mtk_timer.c ++++ b/drivers/clocksource/mtk_timer.c +@@ -143,7 +143,8 @@ static irqreturn_t mtk_timer_interrupt(int irq, void *dev_id) + + /* 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; + } +-- +1.7.10.4 + |