linux-kernel - Re: Long stalls during boot with -next

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Message-ID: <20111007142343.GH14518@opensource.wolfsonmicro.com>
Date:	Fri, 7 Oct 2011 15:23:45 +0100
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Thomas Abraham <thomas.abraham@...aro.org>
Cc:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	kgene.kim@...sung.com
Subject: Re: Long stalls during boot with -next

On Fri, Oct 07, 2011 at 06:57:19PM +0530, Thomas Abraham wrote:
> On 7 October 2011 17:20, Mark Brown <broonie@...nsource.wolfsonmicro.com> wrote:

> > I identified the problem here, the behaviour of LL_DEBUG was changed to
> > make it select DEBUG_ICEDCC by default which is unfortunate if one
> > doesn't have an EmbeddedICE connected.

> Thanks for your suggestion. The long stall during boot problem occurs
> on Samsung boards as well with linux-next. As per your suggestion, the
> following diff fixes this issue.

Excellent, I'm using this now - please add my

Tested-by: Mark Brown <broonie@...nsource.wolfsonmicro.com>

when you send it out properly!

> diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
> index 65cf8c6..035f5cd 100644
> --- a/arch/arm/Kconfig.debug
> +++ b/arch/arm/Kconfig.debug
> @@ -120,6 +120,15 @@ choice
>  		  Say Y here if you want the debug print routines to direct
>  		  their output to the second serial port on these devices.
> 
> +	config DEBUG_SAMSUNG_UART
> +		bool "Kernel low-level debugging messages via samsung serial port"
> +		depends on PLAT_SAMSUNG
> +		help
> +		  Say Y here if you want the debug print routines to direct
> +		  their output to the serial port for Samsung platforms. Choose
> +		  the uart port with the "S3C UART to use for low-level debug"
> +		  config option.
> +
>  endchoice
> 
>  config EARLY_PRINTK
> @@ -139,7 +148,7 @@ config OC_ETM
>  	  kernel code.
> 
>  config DEBUG_S3C_UART
> -	depends on PLAT_SAMSUNG
> +	depends on DEBUG_SAMSUNG_UART
>  	int "S3C UART to use for low-level debug"
>  	default "0"
>  	help
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