Re: [PATCH] mfd: Combine MFD_SUPPORT and MFD_CORE

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On Mon, Aug 29, 2011 at 09:41:47PM +0300, Luciano Coelho wrote:
> ---
> @@ -417,7 +417,6 @@ config GPIO_TIMBERDALE
>  config GPIO_RDC321X
>  	tristate "RDC R-321x GPIO support"
>  	depends on PCI
> -	select MFD_SUPPORT
>  	select MFD_CORE
>  	select MFD_RDC321X
>  	help
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index 21574bd..1836cdf 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -2,10 +2,9 @@
>  # Multifunction miscellaneous devices
>  #
>  
> -menuconfig MFD_SUPPORT
> -	bool "Multifunction device drivers"
> +menuconfig MFD_CORE
> +	tristate "Multifunction device drivers"
>  	depends on HAS_IOMEM
> -	default y

Looks like there is a bug here.  Kconfig symbols with dependencies
(HAS_IOMEM) must not ever be selected by other symbols because Kconfig
doesn't implement a way to resolve them.  This patch means that every
"select MFD_CORE" just assumes that HAS_IOMEM is also selected.

g.

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