linux-kernel - Re: [PATCHv2 2/2] ARM: debug: Move DEBUG_ICEDCC into the DEBUG

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Message-ID: <20110929173006.GI25061@e102144-lin.cambridge.arm.com>
Date:	Thu, 29 Sep 2011 18:30:06 +0100
From:	Will Deacon <will.deacon@....com>
To:	Stephen Boyd <sboyd@...eaurora.org>
Cc:	Russell King - ARM Linux <linux@....linux.org.uk>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	David Brown <davidb@...eaurora.org>
Subject: Re: [PATCHv2 2/2] ARM: debug: Move DEBUG_ICEDCC into the DEBUG_LL
 choice

On Thu, Sep 29, 2011 at 06:22:42PM +0100, Stephen Boyd wrote:
> On 09/29/11 03:39, Will Deacon wrote:
> > Agreed, software timing loops are the only option and it's impossible to get
> > them right everywhere. I think the Kconfig help text should be updated so
> > that the timeout paragraph is removed.
> 
> Yes if you wait a long time the timeout for each character will expire
> and the execution will continue.

Well I got impatient, so I figured it was best to update the help text!

> > diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
> > index 32b1be4..bfdf86b 100644
> > --- a/arch/arm/Kconfig.debug
> > +++ b/arch/arm/Kconfig.debug
> > @@ -81,6 +81,14 @@ choice
> >         prompt "Kernel low-level debugging port"
> >         depends on DEBUG_LL
> >  
> > +       config DEBUG_LL_UART_NONE
> > +               bool "No low-level debugging UART"
> 
> Should this grow a long list of platforms that are in this choice menu?
> For example:
> 
>     depends on !FOOTBRIDGE && !ARCH_CLPS711X && ...

It might be nice to avoid that if we can. Once all the platforms have moved
over to the choice, we can delete the dummy option anyway.

> Otherwise
> 
> Acked-by: Stephen Boyd <sboyd@...eaurora.org>

Thanks,

Will
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