[yocto] [PATCH 0/1] meta: update crownbay.scc for newer emgd driver

[Tom Zanussi]

On Thu, 2012-07-19 at 07:39 -0700, Kamble, Nitin A wrote:
> 
> > -----Original Message-----
> > From: Zanussi, Tom
> > Sent: Thursday, July 19, 2012 8:57 AM
> > To: Kamble, Nitin A
> > Cc: yocto at yoctoproject.org; bruce.ashfield at windriver.com
> > Subject: RE: [PATCH 0/1] meta: update crownbay.scc for newer emgd driver
> > 
> > On Wed, 2012-07-18 at 19:58 -0700, Kamble, Nitin A wrote:
> > >
> > > > -----Original Message-----
> > > > From: Zanussi, Tom
> > > > Sent: Wednesday, July 18, 2012 7:43 PM
> > > > To: Kamble, Nitin A
> > > > Cc: yocto at yoctoproject.org; bruce.ashfield at windriver.com
> > > > Subject: Re: [PATCH 0/1] meta: update crownbay.scc for newer emgd
> > > > driver
> > > >
> > > > On Mon, 2012-07-16 at 22:57 -0700, nitin.a.kamble at intel.com wrote:
> > > > > From: Nitin A Kamble <nitin.a.kamble at intel.com>
> > > > >
> > > > > This commit changes emgd kernel driver for crownbay bsp to the
> > > > > emgd-
> > > > 1.14.
> > > > >
> > > >
> > > > Nitin,
> > > >
> > > > Doesn't switching this over in the kenrnel require emgd-1.14
> > > > userspace recipe updates to work?  Did I miss those?
> > > >
> > > > Tom
> > > >
> > > Tom,
> > >     I am holding the emgd 1.14 userspace commits until the kernel repository
> > change goes upstream. The kernel recipe will need new SRCREV (with emgd
> > 1.14 kernel parts) for the user level emgd 1.14 parts to work. And that
> > dependency will get satisfied once this commit is in.
> > >
> > 
> > Yeah, I understand, the crownbay is typically the most complicated update
> > for all of those reasons - simultaneous new kernel version/recipe, new emgd
> > branch, and new emgd userspace recipe all at the same time.
> > 
> > In the past I've submitted them all at the same time for simultaneous review
> > and some coordination with Bruce - once the kernel parts are in, the kernel
> > recipe and the userspace parts can then be pulled in along with a simple
> > follow-on patch to update the SRCREVs Bruce give us.
> > 
> > The thing is that if Bruce pulls in the patch to switch to emgd-1.14 and only at
> > that point do you post the userspace recipe, and it ends up needing some
> > rework, in the meantime the graphics remain non-functional (I know, they
> > already are, thanks to the package re-ordering patches breaking the current
> > recipe, but hopefully the 1.14 changes will be in and we don't have to worry
> > about it any more.).
> > 
> > Does that make sense, and can you just post the userspace and kernel recipe
> > parts before we give Bruce the go-ahead in making the kernel changes?  (I'd
> > also like to try it out myself as well...).
> > 
> Tom,
>   Until the crownbay bsp's Linux-yocto kernel recipe's meta SRCREV is updated, these kernel repo changes have no effect in the build process. Right ? So as I see, this commit does not make anything worst (or better).
> I am sending the userland recipe commits anyway; So that you can also test it out.
> 

Right, but what if we have to update the meta SRCREV for a different
reason in the meantime (like we did last week for instance).  We're then
forced to take the emgd commit as well.

In any case, it's your BSP so it's up to you how you want to manage it,
I'm just trying to save you and the users some headaches.  It always
made sense to me to do it all at the same time, all else being equal...

Tom

> 
> Thanks,
> Nitin
> 
> 
>