Messages in this thread | | | Subject | Re: [PATCH] pcxx: replace cli()/sti() with spin_lock_irqsave()/spin_unlock_irqrestore() | From | Alan Cox <> | Date | Mon, 20 Dec 2004 14:59:09 +0000 |
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On Gwe, 2004-12-17 at 22:34, James Nelson wrote: > - save_flags(flags); > - cli(); > + spin_lock_irqsave(&pcxx_lock, flags); > del_timer_sync(&pcxx_timer);
Not safe if the lock is grabbed by the timer between the lock and the irqsave as it will spin on another cpu and the timer delete will never finish.
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