Re: [PATCH V3 1/3] gpio: Add virtio-gpio driver

[Enrico Weigelt, metux IT consult]

On 10.06.21 14:16, Viresh Kumar wrote:
> From: "Enrico Weigelt, metux IT consult" <info@xxxxxxxxx>
>
> This patch adds a new driver for Virtio based GPIO devices.
>
> This allows a guest VM running Linux to access GPIO device provided by
> the host. It supports all basic operations for now, except interrupts
> for the GPIO lines.

What exactly did you change here from my original driver ?

Your already changed the spec havily (w/o consulting me first), so I
guess this driver hasn't so much in common w/ my original design.

Note that I made my original design decisions for good reaons
(see virtio-dev list). It already support async notifications
(IOW: irqs), had an easy upgrade path for future additions, etc.

Note #2: it's already implemented and running in the field (different
kernels, different hypervisors, ...) - it just lacked the going through
virtio comitte's formal specification process, which blocked mainlining.

Is there anything fundamentally wrong w/ my original design, why you
invented a completely new one ?


--mtx

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Enrico Weigelt, metux IT consult
Free software and Linux embedded engineering
info@xxxxxxxxx -- +49-151-27565287