Re: [PATCH 0/5] HID: playstation: various DS4 and DualSense fixes

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On Wed, Jan 18, 2023 at 2:12 AM Jiri Kosina <jikos@xxxxxxxxxx> wrote:
>
> On Thu, 5 Jan 2023, Roderick Colenbrander wrote:
>
> > Hi,
> >
> > This patch set contains a number of small fixes and stability improvements.
> >
> > The stability patches are most critical as they prevent kernel crashes.
> > Over the years there have been various buggy devices usually clone devices,
> > but now apparently some official devices with wiped calibration data.
> > It is hard to handle all permutations of devices as some have constants,
> > some have broken constants (e.g. wrong sign of a coefficient). We disable
> > calibration when we see an invalid 0 denominator. The patch adds the same
> > logic to both the DualShock4 and DualSense code.
> >
> > As part of the calibration stability improvements, a thorough review was
> > performed of the calibration code as it was suspected it was potentially
> > incorrect. It was found to be only slightly wrong for the handling of the
> > bias of the gyroscopes. Two patches fix this for both DualShock4 and DualSense.
> > There is only a marginal impact on practical values as the bias values
> > tend to be quite small.
> >
> > Thanks,
> > Roderick Colenbrander
> > Sony Interactive Entertainment, LLC
>
> I am splitting the stability ones (for 6.2) from the small improvements /
> cleanups (for 6.3).
>
> Thanks,
>
> --
> Jiri Kosina
> SUSE Labs
>

Thanks, that's how the patches were kind of set up. I wasn't sure due
to timing where they would land, but thanks for pulling in the
stability fixes!

Thanks,
Roderick



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