Need help: how to locate failure from irq_chip subsystem

Sai Prakash Ranjan saiprakash.ranjan at
Fri Jan 18 06:53:42 EST 2019

On 1/18/2019 4:50 PM, Pintu Agarwal wrote:
>>>> Could you please tell which QCOM SoC this board is based on?
>>> Snapdragon 845 with kernel 4.9.x
>>> I want to know from which subsystem it is triggered:drivers/soc/qcom/
>> Irqchip driver is "drivers/irqchip/irq-gic-v3.c". The kernel you are
>> using is msm-4.9 I suppose or some other kernel?
> Yes, I am using customized version of msm-4.9 kernel based on Android.
> And yes the irqchip driver is: irq-gic-v3, which I can see from config.
> But, what I wanted to know is, how to find out which driver module
> (hopefully under: /drivers/soc/qcom/) that register with this
> irq_chip, is getting triggered at the time of crash ?
> So, that I can implement irq_hold function for it, which is the cause of crash.

Hmm, since this is a bootup crash, *initcall_debug* should help.
Add "initcall_debug ignore_loglevel" to kernel commandline and
check the last log before crash.

- Sai

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