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    SubjectRe: [PATCH] synchronize_irq needs a barrier
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    > I probably need to add this synchronize_irq() logic in dmfe.c too, but I probably do it later,
    > I think I am overestimating this race, since most drivers don't do dev->insuspend checks in IRQ handler.
    > Maybe even just use free_irq() after all....

    Most drivers are probably underestimating the race :-)

    free_irq() would work provided that you did the masking on chip before
    (and unmask only after request_irq on the way back in). But it's a bit
    like using a 10 tons truck to crush an ant...

    Ben.


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