Re: [virtio-dev] Re: [PATCH V5 2/2] virtio: i2c: Allow zero-length transactions

[Jie Deng <jie.deng@intel.com>]

On 2021/10/12 22:09, Arnd Bergmann wrote:
> > @@ -124,13 +140,23 @@ \subsubsection{Device Operation: Operation Status}\label{sec:Device Types / I2C
> >
> >   \drivernormative{\subsubsection}{Device Operation}{Device Types / I2C Adapter Device / Device Operation}
> >
> > +A driver SHOULD implement the VIRTIO_I2C_F_ZERO_LENGTH_REQUEST feature.
> I don't think this needs to be "SHOULD", as a driver may be written to only
> talk to certain i2c clients on the device side, and they do not need zero
> length requests. Maybe this could be
>
> "A driver MAY assume that the VIRTIO_I2C_F_ZERO_LENGTH_REQUEST
> feature is available".

Agree. "MAY" is better.