linux-kernel - Re: [RESEND PATCH v5 3/5] ARM: Conceal DEBUG_LL_UART

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Message-ID: <5013253.K6sZTxep7b@wuerfel>
Date:	Fri, 23 May 2014 17:35:34 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	Daniel Thompson <daniel.thompson@...aro.org>,
	Russell King <linux@....linux.org.uk>,
	Paul Bolle <pebolle@...cali.nl>,
	linaro-kernel@...ts.linaro.org, patches@...aro.org,
	spear-devel@...t.st.com, linux-kernel@...r.kernel.org
Subject: Re: [RESEND PATCH v5 3/5] ARM: Conceal DEBUG_LL_UART_NONE from unsupported platforms

On Friday 23 May 2014 16:10:17 Daniel Thompson wrote:
> Only a small handful of platforms support DEBUG_LL_UART_NONE but it
> lurks in the menus of every single platform config ready to break the
> build. This is an especial problem for defconfigs since it is often
> selected by default.
> 
> This patch limit this choice only to platforms capable of supporting it.
> 
> Signed-off-by: Daniel Thompson <daniel.thompson@...aro.org>
> ---
>  arch/arm/Kconfig.debug | 13 ++++++++++++-
>  1 file changed, 12 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
> index eab8ecb..4c8d7db 100644
> --- a/arch/arm/Kconfig.debug
> +++ b/arch/arm/Kconfig.debug
> @@ -842,7 +842,18 @@ choice
>  
>  	config DEBUG_LL_UART_NONE
>  		bool "No low-level debugging UART"
> -		depends on !ARCH_MULTIPLATFORM
> +		depends on ARCH_AT91 || \
> +			ARCH_CLPS711X || \
> +			ARCH_FOOTBRIDGE || \
> +			ARCH_KS8695 || \
> +			ARCH_NETX || \
> +			ARCH_OMAP1 || \
> +			ARCH_SA1100 || \
> +			ARCH_S3C24XX || \
> +			ARCH_S3C64XX || \
> +			ARCH_S5P64X0 || \
> +			ARCH_S5PC100 || \
> +			ARCH_S5PV210
>  		help
>  		  Say Y here if your platform doesn't provide a UART option
>  		  above. This relies on your platform choosing the right UART

ARCH_S3C24XX has been moved over in linux-next to use debug/s3c24xx.S.
A few others will likely move soon (AT91, CLPS711x, S5PV210), as the
platforms get moved to ARCH_MULTIPLATFORM.

As an alternative to your patch, we could decide to move the remaining
files as well.

	Arnd
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