linux-kernel - Re: [GIT *] Allow request_firmware() to be satisfied from in-kernel, use it in more drivers.

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Date:	Tue, 15 Jul 2008 21:44:45 +0200
From:	Marcel Holtmann <marcel@...tmann.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Frans Pop <elendil@...net.nl>, jeff@...zik.org,
	arjan@...radead.org, akpm@...ux-foundation.org,
	dwmw2@...radead.org, alan@...rguk.ukuu.org.uk,
	linux-kernel@...r.kernel.org
Subject: Re: [GIT *] Allow request_firmware() to be satisfied from
	in-kernel, use it in more drivers.

Hi Linus,

> > Personally I am against hacking file loading from within the kernel.
> > This is why we involved udev (or hotplug in the beginning). It allows
> > you to have userspace policy for the search paths etc.
> 
> Well, I'm personally against _forcing_ people to use udev. 
> 
> Yes, desktop distros generally will do so, since there are lots of complex 
> issues etc. But I don't think we've generally forced it on people if they 
> don't want it (ie I haven't tried it personally since the distro I used 
> started using udev, but I think you can still just ignore udev events and 
> set everything up statically).
> 
> And I don't think that's wrong. Which implies that setup things should 
> still generally at least allow us to avoid udev.
> 
> (But maybe I'm wrong, and everybody already uses udev just because they 
> couldn't be bothered not to).

I actually think that is the case here. udev is so lightweight and
really slim nowadays that not using it is a big drawback. There might be
some system out there that are still using a static /dev directory, but
for sure there are not many and even the embedded world doesn't really
mind.

Also I think the /sbin/hotplug thing is still available (not verified
this) and thus calling a firmware loading helper script with a udev
replacement would be possible. Someone correct me here if I am wrong.

Regards

Marcel


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