linux-kernel - Re: [PATCH v8] i2c: virtio: add a virtio i2c frontend driver

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Message-ID: <20210316075343.zi5rtrfdjsohhu4t@vireshk-i7>
Date:   Tue, 16 Mar 2021 13:23:43 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Jie Deng <jie.deng@...el.com>
Cc:     linux-i2c@...r.kernel.org,
        virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org, mst@...hat.com, wsa@...nel.org,
        jasowang@...hat.com, wsa+renesas@...g-engineering.com,
        andriy.shevchenko@...ux.intel.com, conghui.chen@...el.com,
        arnd@...db.de, kblaiech@...lanox.com,
        jarkko.nikula@...ux.intel.com, Sergey.Semin@...kalelectronics.ru,
        rppt@...nel.org, loic.poulain@...aro.org, tali.perry1@...il.com,
        u.kleine-koenig@...gutronix.de, bjorn.andersson@...aro.org,
        yu1.wang@...el.com, shuo.a.liu@...el.com, stefanha@...hat.com,
        pbonzini@...hat.com
Subject: Re: [PATCH v8] i2c: virtio: add a virtio i2c frontend driver

On 16-03-21, 18:35, Jie Deng wrote:
> diff --git a/drivers/i2c/busses/i2c-virtio.c b/drivers/i2c/busses/i2c-virtio.c
> +struct virtio_i2c {
> +	struct virtio_device *vdev;
> +	struct completion completion;
> +	struct i2c_adapter *adap;
> +	struct mutex lock;
> +	struct virtqueue *vq;
> +};

> +static struct i2c_adapter virtio_adapter = {
> +	.owner = THIS_MODULE,
> +	.name = "Virtio I2C Adapter",
> +	.class = I2C_CLASS_DEPRECATED,
> +	.algo = &virtio_algorithm,
> +};

And FWIW, I still have my concerns about mutex-lock and
I2C_CLASS_DEPRECATED, but yeah we need Wolfram to confirm on them.

LGTM otherwise.

-- 
viresh