linux-kernel - Re: Challenges with doing hardware bring up with Linux first

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Message-ID: <AANLkTing6JkfH=n2GfWtW+2=5oB40FDM-TYPvzd+PPkH@mail.gmail.com>
Date:	Thu, 18 Nov 2010 08:53:22 -0800
From:	"Luis R. Rodriguez" <lrodriguez@...eros.com>
To:	Greg KH <greg@...ah.com>
Cc:	linux-kernel@...r.kernel.org,
	linux-wireless <linux-wireless@...r.kernel.org>,
	David Miller <davem@...emloft.net>,
	"John W. Linville" <linville@...driver.com>,
	Stephen Hemminger <shemminger@...tta.com>,
	"Perez-Gonzalez, Inaky" <inaky.perez-gonzalez@...el.com>,
	Charles Marker <Charles.Marker@...eros.com>,
	Jouni Malinen <Jouni.Malinen@...eros.com>,
	Kevin Hayes <kevin@...eros.com>,
	Zhifeng Cai <zhifeng.cai@...eros.com>,
	Don Breslin <Don.Breslin@...eros.com>,
	Doug Dahlby <Doug.Dahlby@...eros.com>,
	Julia Lawall <julia@...u.dk>
Subject: Re: Challenges with doing hardware bring up with Linux first

On Thu, Nov 18, 2010 at 8:45 AM, Greg KH <greg@...ah.com> wrote:
> On Thu, Nov 18, 2010 at 12:46:37AM -0800, Luis R. Rodriguez wrote:
>> Can Linux help in any way? What if we used staging for a common driver
>> architecture for different OSes? Most of those staging drivers already
>> have some sort of OS agnostic cruft, why not try to help hardware
>> vendors by providing them with a common OS agnostic solution they can
>> share? Is this not out turf? If its not, are we perfectly OK in being
>> second citizens so long as the driver eventually gets done on proper
>> upstream Linux ? I'm not OK with it and hence my e-mail. I'm looking
>> for ideas and thoughts on this. Please no trolls, would really just
>> like some constructive discussions on this. As I see it maybe we can
>> move some of this OS agnostic crap into staging, and then use spatch
>> to write tools to de-unwrap crap to Linux specific stuff and help
>> maintain it. What this does is it moves OS agnostic crap out as a
>> community effort to help aid proper development and porting for Linux.
>> Since we'd maintain the crap / scripts / de-wrappers, we'd likely be
>> able to get drivers quicker and can have a framework to help companies
>> who still [1] need to support other Operating Systems.
>
> No, staging is for gettingn code into, or out of, the kernel tree, not
> for anything else.
>
> I have allowed it to be used to hold drivers in that are not
> "acceptable", while another driver was written by others from scratch to
> work properly on that hardware, and then the original one is dropped.
> That's ok, as there is a time-limit on how long the code lives in the
> staging tree.
>
> But to try to use it to create a multi-os solution, no, that's not what
> staging is for.

OK thanks!

> Also, please review the past multi-os driver initiatives that have
> sprung up over the years (about 1 every 10 years it seems).  Please
> learn from the past as to why those have failed every single time, and
> why we don't want to even try to do that again.

:-) thanks, just testing waters to see what's possible and what
direction to focus more on.

  Luis
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