Re: [PATCH v2] acpi_power_meter: hwmon driver for ACPI 4.0 powermeters

[Darrick J. Wong]

On Mon, Aug 17, 2009 at 03:05:58PM -0700, Andrew Morton wrote:
> > +	if (ACPI_FAILURE(status)) {
> > +		ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PAI"));
> > +		return -EINVAL;
> > +	}
> > +
> > +	if (data)
> > +		return -EINVAL;
> 
> I find this test of `data' inexplicable.  Is it just me, or do we need
> a comment here?

ACPI spec says that the _PAI method passes back 0 on success.  I guess I'll
reroll the patch with a comment stating that.

> > +	if (ACPI_FAILURE(status)) {
> > +		ACPI_EXCEPTION((AE_INFO, status, "Evaluating _SHL"));
> > +		return -EINVAL;
> > +	}
> > +
> > +	if (data)
> > +		return -EINVAL;
> 
> ditto.

Ditto.

--D
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