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Date:   Tue, 29 Jun 2021 12:43:49 +0200
From:   Wolfram Sang <wsa@kernel.org>
To:     Viresh Kumar <viresh.kumar@linaro.org>
Cc:     Jie Deng <jie.deng@intel.com>, linux-i2c@vger.kernel.org,
        virtualization@lists.linux-foundation.org,
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        jarkko.nikula@linux.intel.com, Sergey.Semin@baikalelectronics.ru,
        rppt@kernel.org, loic.poulain@linaro.org, tali.perry1@gmail.com,
        u.kleine-koenig@pengutronix.de, bjorn.andersson@linaro.org,
        yu1.wang@intel.com, shuo.a.liu@intel.com, stefanha@redhat.com,
        pbonzini@redhat.com
Subject: Re: [PATCH v10] i2c: virtio: add a virtio i2c frontend driver
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> From the spec:
>=20
> The case when ``length of \field{write_buf}''=3D0, and at the same time,
> ``length of \field{read_buf}''=3D0 doesn't make any sense.
>=20
> I mentioned this in my first reply and to my understanding I did not get
> a reply that this has changed meanwhile.
>=20

Also, this code as mentioned before:

> +             if (!msgs[i].len)
> +                     break;

I hope this can extended in the future to allow zero-length messages. If
this is impossible we need to set an adapter quirk instead.


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