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SubjectRE: [PATCH] x86/fixup_irq: Clean the offlining CPU from the irq affinity mask
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> Btw, on a slightly different note, I'm also rather surprised that the above
> code doesn't care about the return value of chip->irq_set_affinity() ..
> Shouldn't we warn if that fails?

It seems another case when irq_set_affinity is NULL whenever affinity is changed or not before that,
For this case, I suppose the chip is not supporting set_affinity, then the chip should set all
related irqs into just CPU0, otherwise, it will bring some trouble, do you agree?

I guess this case should be covered outside fixup_irqs() code.

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