Re: New USB stack on FreeBSD w/Linux emulation layer coming

Am Donnerstag, 17. Mai 2007 20:39 schrieb Pete Zaitcev:
> I think we should remove those local_irq_save's, and leave just the
> guarantee that it won't be re-entered (currently such a guarantee
> is inherited from the Linux's interrupt handling, and we'll only
> need to make it explicit if any HCDs start using softirq when
> calling the giveback routine). I'm poking your memory in case
> there's actually a good reason for it which I forgot.

If you do this

1. all drivers need to be audited for simple 'spin_lock()'
2. Doing so will make the common code path needlessly slower
3. If any HCD calls the callback from interrupt, you'll need to take
a lock and disable interrupts anyway

	Regards
		Oliver

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