Re: [PATCH] pcxx: replace cli()/sti() withspin_lock_irqsave()/spin_unlock_irqrestore()

[Alan Cox]

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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