Re: [PATCH, RFC] [1/3] Generic in-kernel AC status

On St 08-02-06 23:25:32, Philipp Matthias Hahn wrote:
> Hi!
> 
> On Wed, Feb 08, 2006 at 01:04:22PM +0000, Matthew Garrett wrote:
> > diff --git a/include/linux/pm.h b/include/linux/pm.h
> ...
> > +void pm_set_ac_status(int (*ac_status_function)(void))
> > +{
> > +	down(&pm_sem);
> > +	get_ac_status = ac_status_function;
> > +	up(&pm_sem);
> > +}
> 
> Why do you need a semaphore/mutex, when you only do one assignment,
> which is atomic by itself?

It is not.
								Pavel

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• References:
  • [PATCH, RFC] [1/3] Generic in-kernel AC status
    • From: Matthew Garrett <[email protected]>
  • Re: [PATCH, RFC] [1/3] Generic in-kernel AC status
    • From: Matthew Garrett <[email protected]>
  • Re: [PATCH, RFC] [1/3] Generic in-kernel AC status
    • From: Philipp Matthias Hahn <[email protected]>

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