Re: [PATCH, RFC] A development process document

[Jiri Kosina <jkosina@suse.cz>]

On Wed, 30 Jul 2008, Roland Dreier wrote:

> I think Linus has said pretty explicitly that he is willing to merge new 
> low-level hardware drivers at pretty much any stage, as long as they are 
> obviously self-contained and can't break anything.

Well, I think I understand a little bit this fear of merging new driver 
that "obviously can't break anything" in arbitrary stage od development. 
See below.

> As an example of this, the UVC webcam driver was one of the very last 
> things merged just before the final 2.6.26 release, very late in the 
> release cycle.

If you have a hardware that hasn't been supported by the previous kernel 
versions at all, then everything is fine, just no driver is bound to the 
device, and the device doesn't work. If then -rc9 comes with a shiny new 
driver for this hardware, it gets autoloaded. If it is buggy, your system 
crashes. This is regression, right?

Nevertheless, I still think that merging new drivers as fast as possible 
is a good thing (tm).

Thanks,

-- 
Jiri Kosina
SUSE Labs