linux-kernel - Re: [PATCH v2 1/1]: iio: light: rpr0521: add missing Kconfig dependencies

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Date:   Fri, 11 Nov 2022 13:25:46 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Paul Gazzillo <paul@...zz.com>
Cc:     Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Shreeya Patel <shreeya.patel@...labora.com>,
        Zhigang Shi <Zhigang.Shi@...eon.com>,
        Dmitry Osipenko <dmitry.osipenko@...labora.com>,
        linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/1]: iio: light: rpr0521: add missing Kconfig
 dependencies

On Thu, Nov 10, 2022 at 04:47:29PM -0500, Paul Gazzillo wrote:
> Fix an implicit declaration of function error for rpr0521 under some configs
> 
> When CONFIG_RPR0521 is enabled without CONFIG_IIO_TRIGGERED_BUFFER,
> the build results in "implicit declaration of function" errors, e.g.,
>   drivers/iio/light/rpr0521.c:434:3: error: implicit declaration of function
>            'iio_trigger_poll_chained' [-Werror=implicit-function-declaration]
>     434 |   iio_trigger_poll_chained(data->drdy_trigger0);
>         |   ^~~~~~~~~~~~~~~~~~~~~~~~
> 
> This fix adds select dependencies to RPR0521's configuration declaration.
> 
> Signed-off-by: Paul Gazzillo <paul@...zz.com>
> Link: https://bugzilla.kernel.org/show_bug.cgi?id=216678

No need to create a bugzilla report on such tiny issues that do actually not
affect the working configurations.

FWIW,
Reviewed-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>

> ---
> V1 -> V2: Cleaned up commit message per reviewer comments and added link
>           to bug report.
> 
>  drivers/iio/light/Kconfig | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/iio/light/Kconfig b/drivers/iio/light/Kconfig
> index 7cf6e8490123..0d4447df7200 100644
> --- a/drivers/iio/light/Kconfig
> +++ b/drivers/iio/light/Kconfig
> @@ -293,6 +293,8 @@ config RPR0521
>  	tristate "ROHM RPR0521 ALS and proximity sensor driver"
>  	depends on I2C
>  	select REGMAP_I2C
> +	select IIO_BUFFER
> +	select IIO_TRIGGERED_BUFFER
>  	help
>  	  Say Y here if you want to build support for ROHM's RPR0521
>  	  ambient light and proximity sensor device.
> -- 
> 2.25.1

-- 
With Best Regards,
Andy Shevchenko