Re: [PATCH 2/2] iio:adc: at91 requires the input subsystem

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Hi,

On 08/05/2014 at 16:56:24 +0200, Arnd Bergmann wrote :
> Building the at91 adc driver with CONFIG_INPUT disabled results in this
> build error:
> 
> ERROR: "input_event" [drivers/iio/adc/at91_adc.ko] undefined!
> ERROR: "input_unregister_device" [drivers/iio/adc/at91_adc.ko] undefined!
> ERROR: "input_free_device" [drivers/iio/adc/at91_adc.ko] undefined!
> ERROR: "input_register_device" [drivers/iio/adc/at91_adc.ko] undefined!
> ERROR: "input_set_abs_params" [drivers/iio/adc/at91_adc.ko] undefined!
> ERROR: "input_allocate_device" [drivers/iio/adc/at91_adc.ko] undefined!
> 
> To make sure we can build random configurations, this turns on CONFIG_INPUT
> whenever CONFIG_AT91_ADC is enabled.
> 

I'm wondering wether we should make part of the driver compile only if
CONFIG_INPUT is defined. Maybe some user will want to use the ADC and
not have any input on their board.

What do you think ?

-- 
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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