Re: [PARPORT] parport-diff-980111

Alan Cox (
Wed, 14 Jan 1998 17:54:49 +0000 (GMT)

> So cli() don' t mask well critical code that can be managed also from
> others CPU, right? cli() clear interrupts only on the CPU that executed
> cli(), or no?

cli() masks all too well - it requires cross cpu messages and lock acquisitions
to do its job. spin_lock_and_irqsave() only affects the local cli state (to
avoid interrupt holding a spinlock by an irq handler wishing to claim it)


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