lkml.org 
[lkml]   [2006]   [Feb]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [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

--
Web maintainer for suspend.sf.net (www.sf.net/projects/suspend) wanted...
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-02-10 13:23    [from the cache]
©2003-2011 Jasper Spaans