Re: Should drm2 be based on Linux kernel 3.14 since it is LTS?

[Waitman Gobble <waitman%waitman.net@localhost>]

On Wed, 16 Jul 2014 21:26:21 -0700
David Shao <davshao%gmail.com@localhost> wrote:

> Great thanks should be given to Taylor R Campbell for the work
> updating drm2 to Linux kernel 3.15.  Perhaps too much has been done in
> that direction, but is it possible that Linux kernel 3.14 should be
> considered as the baseline since it is LTS, which to my understanding
> means updates for 2 years including updates to select drivers.
> Whereas if 3.15 is not LTS it could be rapidly superseded.  If the
> plan is to make drm2 part of NetBSD 7, using 3.14 LTS is perhaps the
> easiest way to support the drm2 drivers at least a couple of the years
> NetBSD 7 will be supported.
> 
> Furthermore I believe both Debian unstable and Fedora 19 have 3.14 as
> their most recent kernels so that people debugging drm2 right now
> before the NetBSD 7 beta announcement could have systems actually
> running 3.14 even if it is a different OS.

When I grep the change logs it looks like the same drm fixes in 3.15 are
happening in 3.14, so I'm not sure it's really an issue? I get
your point but I think you are talking about the Linux kernel as a
whole. Except there seem to be i2c changes in 3.15.. is there i2c in
NetBSD? It's not in FreeBSD, deprecated years ago AFIK. One big part of
porting the drivers is changing the i2c code. So i2c stuff probablyl
not relevant.

A thought anyway.

Waitman Gobble
Los Altos, California USA