[U-Boot] [PATCH 00/93] dm: Move towards completing CONFIG_BLK migration

[Tom Rini]

On Tue, Nov 20, 2018 at 02:45:24PM +0100, Marek Vasut wrote:
> On 11/20/2018 02:42 PM, Tom Rini wrote:
> > On Tue, Nov 20, 2018 at 02:40:43PM +0100, Marek Vasut wrote:
> >> On 11/20/2018 02:37 PM, Tom Rini wrote:
> >>> On Tue, Nov 20, 2018 at 01:42:15PM +0100, Soeren Moch wrote:
> >>>>
> >>>>
> >>>> On 19.11.18 16:52, Simon Glass wrote:
> >>>>> All boards should now be migrated to use CONFIG_BLK. This series removes
> >>>>> those with build problems using this option.
> >>>>>
> >>>>> If maintainers want to keep these boards in they should send a patch in
> >>>>> the next week or two. Otherwise the board will be removed in the next
> >>>>> release, and will need to be added and re-reviewed later.
> >>>> Fabio, Stefano,
> >>>>
> >>>> it seems (almost?) all i.mx6 boards should be removed within two weeks.
> >>>> But would it not make more sense to convert the reference boards first
> >>>> (mx6sabresd
> >>>> in my case for tbs2910), and let hobbyist maintainers like me take this
> >>>> as example for
> >>>> their own modifications?
> >>>
> >>> So, I replied to the main thread earlier but no, we're not going to drop
> >>> everything in 2 weeks, especially since there's a lot of false positives
> >>> in this series.
> >>>
> >>>> Simon, Tom,
> >>>>
> >>>> is this really the usual u-boot working style to remove about hundred
> >>>> boards within
> >>>> two weeks without prior warning? As hobbyist board maintainer I try to
> >>>> follow
> >>>> new developments, and more than once I fixed up regressions introduced
> >>>> by others
> >>>> in general code.
> >>>> But I cannot follow all development details without any heads-up. And
> >>>> even the
> >>>> NXP folks seem to be surprised about this.
> >>>>
> >>>> All problems with this transition seem to be located around usbstorage
> >>>> and sata.
> >>>> This is for sure not really very board specific. Is there any migration
> >>>> guide, or
> >>>> examples how other SoC architectures did this conversion?
> >>>
> >>> I'll admit this hasn't been our best notification.  But, the deadline
> >>> was discussed about a year ago (and then no, I didn't get a build-time
> >>> warning in).  Then around v2018.05 I said it wasn't going to be a
> >>> removal type problem yet as we had a lot of boards to fixup still, and
> >>> repeated that at v2018.07.  That did lead to a lot of things getting
> >>> addressed.  But yes, we still have some large areas that after a few
> >>> years still have not been converted, and that puts me in a hard spot
> >>> too.
> >>
> >> Build time warning for a year would be good ?
> > 
> > A year for this?  No.  New deadlines?  That's not too far off from what
> > we've done historically, so yes.
> 
> Give people some sort of breathing space to get the conversion done.
> Stressing people out by arbitrary deadlines will lead nowhere.

Sure, agreed.  I didn't say we're going to drop all these boards, nor
are we going to drop SATA and USB Storage (if those are still all that's
left to convert) for this release.  But given that we proposed a
deadline in August 2017, made email-but-not-build noise about it between
May and July/August of this year, no, I also don't think setting a new
deadline of November 2019 is the right call either.

So, really, lets see what the fails to build boards are with BLK being
on when we have block devices.  Then assess what a good deadline is.

> >> Maybe we need some generic Makefile macro to set those up.
> > 
> > It would be nice, yes.  I think the problem here is (or, was) the
> > complex set of options that didn't work.
> 
> The problem was many people didn't know about the conversion deadline or
> simply forgot. And reminding them with a 100-patch series removing half
> of the boards is like splashing icy water bucket in their sleeping faces.

Alright.  But we've already tried less shocking approaches to
conversion, but in public (over the summer when Simon listed most of
these boards in a series but I _think_ his script failed to CC the
universe and didn't follow up with a repost that did email everyone) and
perhaps private too (I honestly don't recall if I did, or just intended
to, ask you about the USB side of this on IRC).

-- 
Tom
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