linux-kernel - Re: [PATCH] iio: adc: select triggered buffer for sama5d2 adc

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Date:   Thu, 17 Aug 2017 15:38:18 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Eugen Hristev <eugen.hristev@...rochip.com>,
        Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] iio: adc: select triggered buffer for sama5d2 adc

On Tue, 15 Aug 2017 16:46:31 +0200
Arnd Bergmann <arnd@...db.de> wrote:

> Without the triggered buffer code, we get a link error:
> 
> drivers/iio/adc/at91-sama5d2_adc.o: In function `at91_adc_probe':
> at91-sama5d2_adc.c:(.text+0x938): undefined reference to `devm_iio_triggered_buffer_setup'
> 
> This adds a Kconfig 'select' statement like other ADC
> drivers have it already.
> 
> Fixes: 5e1a1da0f8c9 ("iio: adc: at91-sama5d2_adc: add hw trigger and buffer support")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Doh. Shouldn't have missed this one.

Thanks Arnd,

Applied to the togreg branch of iio.git will head for Greg and hence linux-next
in a few days.

Jonathan
> ---
>  drivers/iio/adc/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
> index e4eeebac5297..57625653fcb6 100644
> --- a/drivers/iio/adc/Kconfig
> +++ b/drivers/iio/adc/Kconfig
> @@ -158,6 +158,7 @@ config AT91_SAMA5D2_ADC
>  	tristate "Atmel AT91 SAMA5D2 ADC"
>  	depends on ARCH_AT91 || COMPILE_TEST
>  	depends on HAS_IOMEM
> +	select IIO_TRIGGERED_BUFFER
>  	help
>  	  Say yes here to build support for Atmel SAMA5D2 ADC which is
>  	  available on SAMA5D2 SoC family.