linux-kernel - Re: [PATCH v10] i2c: virtio: add a virtio i2c frontend driver

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Message-ID: <a2994a8f-bbf9-b26f-a9d2-eb02df6623b8@intel.com>
Date:   Tue, 23 Mar 2021 16:33:30 +0800
From:   Jie Deng <jie.deng@...el.com>
To:     Viresh Kumar <viresh.kumar@...aro.org>
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 v10] i2c: virtio: add a virtio i2c frontend driver

On 2021/3/23 15:27, Viresh Kumar wrote:

> On 23-03-21, 22:19, Jie Deng wrote:
>> +static int __maybe_unused virtio_i2c_freeze(struct virtio_device *vdev)
>> +{
>> +	virtio_i2c_del_vqs(vdev);
>> +	return 0;
>> +}
>> +
>> +static int __maybe_unused virtio_i2c_restore(struct virtio_device *vdev)
>> +{
>> +	return virtio_i2c_setup_vqs(vdev->priv);
>> +}
> Sorry for not looking at this earlier, but shouldn't we enclose the above two
> within #ifdef CONFIG_PM_SLEEP instead and drop the __maybe_unused ?


I remembered I was suggested to use "__maybe_unused" instead of "#ifdef".

You may check this https://lore.kernel.org/patchwork/patch/732981/

The reason may be something like that.