> Oliver Neukum <[EMAIL PROTECTED]> wrote:
> > So I would say that usually better be safe than sorry and use _irqsave,
> > but not in a place _designed_ to be nothing but an irq handler and in
> > a small driver in a prolific category of devices which might well be
> > copied and lead people to conclude that it is safe to add a down() there.
>
> The whole problem is that we balance against our assesements of
> what is probable in the future.
>
> I think that if someone is dumb enough to add down() into interrupt
> paths cannot be deterred by spin_lock present a few lines above.
> You are relying on a subtle signal sent by spin_lock to your mind,
> but it's no use against people adding semaphores. Their minds are
> not attuned to receive these signals.
Yes, possibly I've looked at too many drivers for too long.
Regards
Oliver
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