> > True, but relvant only for irq handlers.
>
> So you agree that it might make sense to move uhci_irq to a tasklet, since
> it _is_ an IRQ handler?
Absolutely. Sorry about being unclear about that.
[..]
> >From the point of view of enqueue, the other code is dequeue and uhci_irq.
> >From the point of view of uhci_irq, the other code is enqueue and dequeue.
> None of the three runs in process context, in general.
>
> Using spin_lock_bh() in enqueue or dequeue isn't a solution because
> existing code already calls these routines with interrupts disabled.
How so? If you convert the irq code to a tasklet, it'll run in a tasklet.
Regards
Oliver
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