linux-kernel - Re: [PATCH v11] i2c: virtio: add a virtio i2c frontend driver

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Message-ID: <YN2cs0H+5C892kM4@smile.fi.intel.com>
Date:   Thu, 1 Jul 2021 13:45:07 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Jie Deng <jie.deng@...el.com>
Cc:     linux-i2c@...r.kernel.org,
        virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org, wsa@...nel.org,
        wsa+renesas@...g-engineering.com, mst@...hat.com, arnd@...db.de,
        jasowang@...hat.com, yu1.wang@...el.com, shuo.a.liu@...el.com,
        conghui.chen@...el.com, viresh.kumar@...aro.org,
        stefanha@...hat.com
Subject: Re: [PATCH v11] i2c: virtio: add a virtio i2c frontend driver

On Thu, Jul 01, 2021 at 11:24:46AM +0800, Jie Deng wrote:
> Add an I2C bus driver for virtio para-virtualization.
> 
> The controller can be emulated by the backend driver in
> any device model software by following the virtio protocol.
> 
> The device specification can be found on
> https://lists.oasis-open.org/archives/virtio-comment/202101/msg00008.html.
> 
> By following the specification, people may implement different
> backend drivers to emulate different controllers according to
> their needs.

> 	- Use #ifdef CONFIG_PM_SLEEP to replace the "__maybe_unused".

Why is that?

-- 
With Best Regards,
Andy Shevchenko