At Mon, 10 May 2004 10:31:07 +0200 (METDST),
Clemens Ladisch wrote:
> 
> Giuliano Pochini wrote:
> > Some drivers use spin_lock_irq() a lot, while others always use
> > spin_lock_irqsave(). I can't see the difference. When it's safe
> > using the _irq() version ?
> 
> Only when you know that you are not in interrupt context.

also, not in the context which already disabled irq.


Takashi


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