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

[Philipp Matthias Hahn]

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?

BYtE
Philipp
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