linux-kernel - Re: [PATCH v1 11/11] media: starfive: enable building

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Date:   Wed, 8 Mar 2023 11:33:24 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Jack Zhu <jack.zhu@...rfivetech.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Robert Foss <rfoss@...nel.org>,
        Todor Tomov <todor.too@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Maxime Ripard <mripard@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>
Cc:     linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, changhuang.liang@...rfivetech.com
Subject: Re: [PATCH v1 11/11] media: starfive: enable building

On 07/03/2023 10:46, Jack Zhu wrote:
> 
> 
> On 2023/3/3 16:43, Krzysztof Kozlowski wrote:
>> On 02/03/2023 10:19, jack.zhu wrote:
>>> Add Kconfig and Makefie, update platform/Kconfig and platform/Makefile
>>> to enable building of the Starfive Camera subsystem driver.
>>>
>>> Signed-off-by: jack.zhu <jack.zhu@...rfivetech.com>
>>> ---
>>>  drivers/media/platform/Kconfig           |  1 +
>>>  drivers/media/platform/Makefile          |  1 +
>>>  drivers/media/platform/starfive/Kconfig  | 18 ++++++++++++++++++
>>>  drivers/media/platform/starfive/Makefile | 14 ++++++++++++++
>>
>> This is not a separate commit. If it were, it would mean you just added
>> dead code in previous commits, so why adding dead code in first place?
>>
> 
> The previous patches are made according to the module function.I think
> it is helpful to explain the composition of the code file. 
> 
> stf_camss[patch 9] as a platform device manages all resources including
> ISP and VIN. ISP/VIN [patch 7/8]as a sub-device needs to access other
> resources managed by stf_camss.There is mutual reference between them.
> Therefore, this patch is used for the overall compilation of the starfive
> directory.

So previous code is dead? Again, what is the reason for adding dead
code? Mutual reference is not the answer.

Best regards,
Krzysztof