[OpenWrt-Devel] [PATCHv2] Linux 3.16 support on mvebu

[Maxime Ripard]

Hi Rafał,

On Tue, Oct 28, 2014 at 04:29:15PM +0100, Rafał Miłecki wrote:
> Hi Maxime,
> 
> On 9 October 2014 17:10, Maxime Ripard <maxime.ripard at free-electrons.com> wrote:
> > This is the second version of my rather big changes to support the
> > 3.16 kernel, and more specifically on the mvebu SoCs.
> >
> > The first patch ports the existing 3.14 patches to 3.16, and creates a
> > generic configuration for it.
> >
> > http://free-electrons.com/~maxime/pub/openwrt-3.16/v2-0001-linux-Add-3.16-support.patch
> 
> A kind of problem with 3.16 was its support as it wasn't picked for
> LTS by anyone.
> 
> So personally I'd prefer to use another kernel version for OpenWrt
> release. A one with LTS would be great. Recently we've started working
> on 3.18, which is probably the nearest kernel with a chance of LTS.
> And it case it won't be LTS, personally I'd look for another one.

I wasn't aware of such policy. Is there a reason for 3.13 for example
to be supported then?

And yeah, I discovered your work on 3.18 this morning when pulling the
changes.

> > The second patch does pretty much the same thing but for the mvebu
> > target.
> 
> Would it be possible for you to switch to 3.18? It's still not ready
> (not compiling) as it was started just yesterday. But I think we will
> try to stabilize this one.

I needed a kernel >= 3.16, so 3.18 is fine for me. I can of course
help to bring it up, and I'll be happy to, but if there's a chance for
my work to actually help and be merged.

So far, I sent three change sets:
  - One that, as I just discovered, has been silently merged. I guess
    it's ok.
  - One to upgrade to 3.16, which will apparently not get merged,
    because some private (as in !public) effort as been going on and
    just appeared out of nowhere on the git repo, without any posting
    or reviews. I didn't receive any mail warning me of that effort,
    or why my work was considered pointless, before yours, three weeks
    later.
  - One to fix real issues that were preventing *any* openwrt image to
    be flashed, let alone work, on one officially "supported"
    device. This one being the most critical only got two reviews,
    that were just basically saying "meh. I don't like it", but never
    got any suggestions on how to actually fix things the right way.

I'm not trying to force my way in, I'm really not, I'd be really happy
to improve my patches so that these bugs end up being fixed
upstream. But there need to be some discussion, and guidance probably,
for that, and so far there's been none.

These were my first contributions to OpenWRT, and I can't really say
I've been pleased with the experience so far.

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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