linux-kernel - Re: [PATCH v2 3/3] ARM: qcom_defconfig: order items with savedefconfig

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Date:   Sat, 23 Jul 2022 20:44:08 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Luca Weiss <luca@...tu.xyz>, Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Russell King <linux@...linux.org.uk>,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2 3/3] ARM: qcom_defconfig: order items with
 savedefconfig

On 23/07/2022 20:17, Luca Weiss wrote:
> On Samstag, 23. Juli 2022 19:36:17 CEST Krzysztof Kozlowski wrote:
>> On 23/07/2022 11:58, Luca Weiss wrote:
>>> See also
>>> https://lore.kernel.org/linux-arm-msm/20191104210943.101393-1-luca@z3ntu.x
>>> yz/ (never applied for some reason)
>>
>> Mentioned patch is incorrect so should not be applied - it removes at
>> least TMPFS which is not desired. I did not check other removed symbols.
> 
> For this example: TMPFS is still enabled after this, it's selected by other 
> options, like DRM or COMMON_CLK.

I know, it does not matter. We had this case (with DEBUGFS and probably
others) and the decision was - user visible symbols must no be removed
by savedefconfig.

> 
> Imo not doing this just hides the brokeness as options wouldn't get selected 
> anyways when you do "make qcom_defconfig". Savedefconfig afterwards just puts 
> reality into the defconfig file. And yes, if some option gets lost then some 
> dependency for it probably needs to get enabled as well and this should get 
> fixed.

But dependencies are no being enabled, because expectation is that all
user-visible options are selected by defconfig.


Best regards,
Krzysztof