linux-kernel - Re: [PATCH 1/2] serial: samsung: Move uart_register

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Message-ID: <20140124143859.70e0e610@www.etchedpixels.co.uk>
Date:	Fri, 24 Jan 2014 14:38:59 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Mark Brown <broonie@...nel.org>
Cc:	Tomasz Figa <t.figa@...sung.com>,
	Tushar Behera <tushar.behera@...aro.org>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	lkml <linux-kernel@...r.kernel.org>,
	linux-serial <linux-serial@...r.kernel.org>,
	linux-samsung-soc <linux-samsung-soc@...r.kernel.org>,
	jslaby <jslaby@...e.cz>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Ben Dooks <ben.dooks@...ethink.co.uk>
Subject: Re: [PATCH 1/2] serial: samsung: Move uart_register_driver call to
 device probe

On Fri, 24 Jan 2014 12:03:09 +0000
Mark Brown <broonie@...nel.org> wrote:

> On Thu, Jan 23, 2014 at 09:33:21PM +0000, Alan Cox wrote:
> > Mark Brown <broonie@...nel.org> wrote:
> 
> > > I don't see how we can meaningfully test this on a platform - the kernel
> > > would have to be pretty demented to care, it's userspace that cares and
> > > that's not really tied to individual serial drivers but is where we
> > > mainly need coverage.
> 
> > Which is why I think we want to enable it gradually and platform by
> > platform as that platform or arch maintainer judges it appropriate given
> > their knowledge of their platform(s).
> 
> I don't see how that follows?  For the most part architecture
> maintainers aren't going to be able to say too much about which
> userspaces are being run on their platforms if the architecture
> has any kind of widespread use.

For most architectures I suspect that they do have a pretty good idea.
ARM is a bit different but I imagine the various platform specific
maintainers are the ones who have that knowledge

Alan
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