Re: Need help: how to locate failure from irq_chip subsystem

[Sai Prakash Ranjan]

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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