linux-kernel - Re: [PATCH v2] drivers/tty: Folding Android's keyreset driver in sysRQ

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Message-ID: <20120831224128.GA22073@core.coreip.homeip.net>
Date:	Fri, 31 Aug 2012 15:41:28 -0700
From:	Dmitry Torokhov <dmitry.torokhov@...il.com>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	Mathieu Poirier <mathieu.poirier@...aro.org>,
	linux-kernel@...r.kernel.org, rdunlap@...otime.net,
	arve@...roid.com, kernel-team@...roid.com, john.stultz@...aro.org
Subject: Re: [PATCH v2] drivers/tty: Folding Android's keyreset driver in
 sysRQ

On Fri, Aug 31, 2012 at 11:02:27PM +0100, Alan Cox wrote:
> > > Why do we need to involve a platform device and not use, for example, a module
> > > parameter, that could be set up from userspace?
> > 
> > The platform device comes from the original design and was included to
> > minimise the amount of changes in code that make use of the current
> > keyreset driver.
> 
> The platform device is IMHO the right answer. In this class of devices
> the stuff is compiled in, the userspace is Android, there are no modules
> and there is no reason for it to be configurable.

It does not matter if it is built in or not, /sys/module/XXX/parameters
is still there, and while havig it in kernel is "easy" you could as
easily stuff needed data into a sysfs attribute during booting.

And we should be able to get this from DT even without the platform
device (this was the next step, wasn't it?).

Thanks.

-- 
Dmitry
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