linux-kernel - Re: [PATCH v8 3/7] iio: accel: kionix-kx022a: Warn on failed matches and assume compatibility

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Message-ID: <ZOdEVYoWSUL3ZETy@smile.fi.intel.com>
Date:   Thu, 24 Aug 2023 14:51:49 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Mehdi Djait <mehdi.djait.k@...il.com>
Cc:     jic23@...nel.org, mazziesaccount@...il.com,
        krzysztof.kozlowski+dt@...aro.org, robh+dt@...nel.org,
        lars@...afoo.de, linux-iio@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v8 3/7] iio: accel: kionix-kx022a: Warn on failed matches
 and assume compatibility

On Wed, Aug 23, 2023 at 11:16:37PM +0200, Mehdi Djait wrote:
> Avoid error returns on a failure to match and instead just warn with
> assumption that we have a correct dt-binding telling us that
> some new device with a different ID is backwards compatible.

As we already discussed in the past I think this patch might be
not okay in case a hardware vendor decides to make incompatible
device with non-supported yet ID. It might be even harmful to
the hardware to program register without knowing that this is safe.

That said, I'm neither NAKing nor reviewing this and leave to
maintainers to decide.

-- 
With Best Regards,
Andy Shevchenko