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Subject: Re: [PATCH v10] i2c: virtio: add a virtio i2c frontend driver
To:     Wolfram Sang <wsa@kernel.org>,
        Viresh Kumar <viresh.kumar@linaro.org>,
        Arnd Bergmann <arnd@arndb.de>,
        Linux I2C <linux-i2c@vger.kernel.org>,
        virtualization@lists.linux-foundation.org,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        "Michael S. Tsirkin" <mst@redhat.com>,
        Jason Wang <jasowang@redhat.com>,
        Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
        conghui.chen@intel.com, kblaiech@mellanox.com,
        jarkko.nikula@linux.intel.com,
        Sergey Semin <Sergey.Semin@baikalelectronics.ru>,
        Mike Rapoport <rppt@kernel.org>, loic.poulain@linaro.org,
        Tali Perry <tali.perry1@gmail.com>,
        =?UTF-8?Q?Uwe_Kleine-K=c3=b6nig?= <u.kleine-koenig@pengutronix.de>,
        Bjorn Andersson <bjorn.andersson@linaro.org>,
        yu1.wang@intel.com, shuo.a.liu@intel.com,
        Stefan Hajnoczi <stefanha@redhat.com>,
        Paolo Bonzini <pbonzini@redhat.com>
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From:   Jie Deng <jie.deng@intel.com>
Message-ID: <6849a8f0-204a-362a-ed97-e910065ab14f@intel.com>
Date:   Thu, 15 Apr 2021 16:15:07 +0800
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On 2021/4/15 15:28, Wolfram Sang wrote:

>> Now that we were able to catch you, I will use the opportunity to
>> clarify the doubts I had.
>>
>> - struct mutex lock in struct virtio_i2c, I don't think this is
>>    required since the core takes care of locking in absence of this.
> This is likely correct.


OK. Then I will remove the lock.


>> - Use of I2C_CLASS_DEPRECATED flag, I don't think it is required for
>>    new drivers.
> This is definately correct :)


Do you mean a new driver doesn't need to set the following ?

vi->adap.class = I2C_CLASS_DEPRECATED;

Just leave the class to be 0 ?


>
> Let's see if I will have more questions...


OK. Thank you.