Re: [PATCH V1 05/15] spmi: pmic-arb: cleanup unrequested irqs

[Stephen Boyd]

On 05/30, Kiran Gunda wrote:
> From: Abhijeet Dharmapurikar <adharmap@xxxxxxxxxxxxxx>
> 
> We see a unmapped irqs trigger right around bootup. This could
> likely be because the bootloader exited leaving the interrupts
> in an unknown or unhandled state.  Ack and mask the interrupt
> if one is found. A request_irq later will unmask it and also
> setup proper mapping structures.

Do we have systems where this is causing an interrupt storm due
to a level high interrupt or something? Just plain acking and
masking irqs at boot if we don't have an irq descriptor created
yet doesn't sound like a good idea, because we'll lose all
interrupts that happen before this driver probes?

> 
> Also the current driver ensures that no read/write transaction
> is in progress while it makes changes to the interrupt regions.
> This is not necessary because read/writes over spmi and arbiter
> interrupt control are independent operations. Hence, remove the
> synchronized accesses to interrupt region.

That's another patch for this paragraph.

-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project