linux-kernel - Re: [PATCH v3] wireless: carl9170: fix LEDS build errors & warnings

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Date:   Thu, 3 Jun 2021 08:20:25 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Kalle Valo <kvalo@...eaurora.org>
Cc:     Christian Lamparter <chunkeey@...il.com>,
        linux-kernel@...r.kernel.org, kernel test robot <lkp@...el.com>,
        linux-wireless@...r.kernel.org, Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH v3] wireless: carl9170: fix LEDS build errors & warnings

On 6/3/21 2:46 AM, Kalle Valo wrote:
> Randy Dunlap <rdunlap@...radead.org> writes:
> 
>> On 5/30/21 2:31 AM, Christian Lamparter wrote:
>>> On 30/05/2021 05:11, Randy Dunlap wrote:
>>>> kernel test robot reports over 200 build errors and warnings
>>>> that are due to this Kconfig problem when CARL9170=m,
>>>> MAC80211=y, and LEDS_CLASS=m.
>>>>
>>>> WARNING: unmet direct dependencies detected for MAC80211_LEDS
>>>>    Depends on [n]: NET [=y] && WIRELESS [=y] && MAC80211 [=y] &&
>>>> (LEDS_CLASS [=m]=y || LEDS_CLASS [=m]=MAC80211 [=y])
>>>>    Selected by [m]:
>>>>    - CARL9170_LEDS [=y] && NETDEVICES [=y] && WLAN [=y] &&
>>>> WLAN_VENDOR_ATH [=y] && CARL9170 [=m]
>>>>
>>>> CARL9170_LEDS selects MAC80211_LEDS even though its kconfig
>>>> dependencies are not met. This happens because 'select' does not follow
>>>> any Kconfig dependency chains.
>>>>
>>>> Fix this by making CARL9170_LEDS depend on MAC80211_LEDS, where
>>>> the latter supplies any needed dependencies on LEDS_CLASS.
>>>
>>> Ok, this is not what I was expecting... I though you would just
>>> add a "depends on / imply MAC80211_LEDS" on your v2. (this was
>>> based on the assumption of what mac80211,  ath9k/_htc and mt76
>>> solutions of the same problem looked like).
>>
>> Do you want the user choice/prompt removed, like MT76 is?
>>
>>> But since (I assuming here) this patch passed the build-bots
>>> testing with flying colors in the different config permutations.
>>
>> It hasn't passed any build-bots testing that I know of.
>> I did 8 combinations of kconfigs (well, 2 of them were invalid),
>> but they all passed my own build testing.
> 
> So is this ok to take now? Or will there be v4?

It's all good AFAIK unless Christian wants something changed.

Christian?

-- 
~Randy