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SubjectRe: [PATCH v2 1/3] genirq/affinity: Add irq_update_affinity_desc()
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Hi Thomas,

>>> 3) Interrupt has already been switched to managed. Double init is not
>>> really a good sign either.
>> I just tested that and case 3) would be a problem. I don't see us
>> clearing the managed flag when free'ing the interrupt. So with
>> CONFIG_DEBUG_TEST_DRIVER_REMOVE=y, we attempt this affinity update
>> twice, and error from the irqd_affinity_is_managed() check.
> That means the interrupt is not deallocated and reallocated, which does
> not make sense to me.
>

Just mentioning a couple of things here, which could be a clue to what
is going on:
- the device is behind mbigen secondary irq controller
- the flow in the LLDD is to allocate all 128 interrupts during probe,
but we only register handlers for a subset with device managed API

Thanks,
John

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