Re: [PATCH 2/2] HID: wiimote: Parse calibration data of balance boards

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On Mon, 17 Sep 2012, Florian Echtler wrote:

> Darn, I just realized there may be an error here:
> 
> On 17.09.2012 12:31, David Herrmann wrote:
> >   drivers/hid/hid-wiimote-ext.c | 39 ++++++++++++++++++++++++++++++++++++++-
> >   1 file changed, 38 insertions(+), 1 deletion(-)
> > 
> > +	/* apply calibration data */
> > +	for (i = 0; i < 4; i++) {
> > +		if (val[i] < ext->calib[i][1]) {
> > +			tmp = val[i] - ext->calib[i][0];
> > +			tmp *= 1700;
> > +			tmp /= ext->calib[i][1] - ext->calib[i][0];
> > +		} else {
> > +			tmp = val[i] - ext->calib[i][1];
> > +			tmp *= 1700;
> > +			tmp /= ext->calib[i][2] - ext->calib[i][1] + 1700;
> I think this is not exactly the same formula as in my original patch; I'm
> quite sure this should read:
> 
> 	tmp /= ext->calib[i][2] - ext->calib[i][1];
> 	tmp += 1700;
> 
> instead.

Please send a followup patch if that's the case, as I have already pushed 
out the wiimote branch.

Thanks,

-- 
Jiri Kosina
SUSE Labs
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