linux-kernel - Re: [PATCH v3 4/4] ARM: configs: s5pv210_defconfig: enable IIO required by MAX17040

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Date:   Sun, 6 Aug 2023 10:29:04 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Andi Shyti <andi.shyti@...nel.org>,
        Svyatoslav Ryhel <clamor95@...il.com>
Cc:     Iskren Chernev <me@...ren.info>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Matheus Castello <matheus@...tello.eng.br>,
        Sebastian Reichel <sre@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Russell King <linux@...linux.org.uk>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Arnd Bergmann <arnd@...db.de>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Claudiu Beznea <claudiu.beznea@...rochip.com>,
        Stefan Hansson <newbie13xd@...il.com>,
        linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org
Subject: Re: [PATCH v3 4/4] ARM: configs: s5pv210_defconfig: enable IIO
 required by MAX17040

On 06/08/2023 00:42, Andi Shyti wrote:
> Hi Svyatoslav,
> 
> On Mon, Jul 31, 2023 at 10:36:13AM +0300, Svyatoslav Ryhel wrote:
>> After adding support for passing temperature data from thermal sensor
>> to MAX17040 it got dependency on CONFIG_IIO. From all defconfigs
>> using MAX17040 only s5pv210_defconfig did not have IIO already enabled
>> so let's enable it to avoid regression.
>>
>> Signed-off-by: Svyatoslav Ryhel <clamor95@...il.com>
>> ---
>>  arch/arm/configs/s5pv210_defconfig | 1 +
>>  1 file changed, 1 insertion(+)
>>
>> diff --git a/arch/arm/configs/s5pv210_defconfig b/arch/arm/configs/s5pv210_defconfig
>> index 4c1e480b5bbd..24070ee3d43e 100644
>> --- a/arch/arm/configs/s5pv210_defconfig
>> +++ b/arch/arm/configs/s5pv210_defconfig
>> @@ -97,6 +97,7 @@ CONFIG_MMC_SDHCI_S3C_DMA=y
>>  CONFIG_RTC_CLASS=y
>>  CONFIG_RTC_DRV_MAX8998=m
>>  CONFIG_DMADEVICES=y
>> +CONFIG_IIO=y
>>  CONFIG_PWM=y
>>  CONFIG_PWM_SAMSUNG=y
>>  CONFIG_PHY_SAMSUNG_USB2=m
> 
> Should this patch be squashed to the previous patch? I think you
> break bisectability for this board if you enable iio only here.

The defconfig change matters less - distros don't use them - so this
points to the fact that patchset affected the users. All existing users
of max17040 drivers, who do not enable IIO, will have their setups broken.

Best regards,
Krzysztof