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

[Greg KH <greg@kroah.com>]

On Wed, Feb 08, 2006 at 01:04:22PM +0000, Matthew Garrett wrote:
> +/**
> + *	pm_set_ac_status - Set the ac status callback
> + *	@ops:	Pointer to function
> + */
> +
> +void pm_set_ac_status(int (*ac_status_function)(void))

No extra line in there please.
And perhaps a bit more description of what this is used for?

> +{
> +	down(&pm_sem);

Shouldn't this be a mutex?

> +	get_ac_status = ac_status_function;
> +	up(&pm_sem);
> +}
> +
> +EXPORT_SYMBOL(pm_set_ac_status);

No extra line between the function and the EXPORT_SYMBOL please.

Also, how about EXPORT_SYMBOL_GPL()?

And, who will be using this interface, and what for?



> +
> +/**
> + *	pm_get_ac_status - return true if the system is on AC
> + */
> +
> +int pm_get_ac_status(void)
> +{
> +	int status;
> +
> +	down (&pm_sem);
> +	if (get_ac_status)
> +		status = get_ac_status();
> +	else
> +		status = 0;
> +	up (&pm_sem);

You can save 2 lines by setting status = 0 on the first line of this
function :)

thanks,

greg k-h