[PATCH 0/7] Nexus One Support

Dima Zavin dmitriyz at google.com
Sat Jan 22 13:06:44 EST 2011


I completely agree with you that the entire history of the evolution
of the code is not interesting or useful to everyone on the list or in
linux kernel tree. I'm not advocating posting the original patches
(which as you rightfully point out are plentiful due to long
development cycle). It would be a waste of time.

I also like how Daniel has split up the board file additions into nice
small patches, and I already thanked him for doing this work.

All I ask is that if files are directly copied out of the tree with
only slight modifications or if they are copied and stripped down for
easier consumption, just say
Original Authors: <dude at co> if it's reasonable to gather who the
primary contributors are. If that is hard due to lots of commits and
squashes, even a Cc: to the people who wrote the code would have been
enough. Had any of that been done, I would have not said a word.

I still do appreciate Daniel's efforts and the way he is splitting up
the commits for public consumption, as they do logically make sense.


On Sat, Jan 22, 2011 at 4:20 AM, Russell King - ARM Linux
<linux at arm.linux.org.uk> wrote:
> On Sat, Jan 22, 2011 at 01:18:54PM +0200, Pekka Enberg wrote:
>> Why is that? I don't see any technical problem of upstreaming the
>> original patches even if they don't compile (as long as they're not
>> included in Makefiles or Kconfig files). There's no need to hide the
>> real history even if it looks ugly...
> I've asked Daniel in private whether he'd mind posting the original
> set of patches which he based his work on to this thread.
> I suspect that the situation is that there's many patches which he's
> taken from the repository and consolidated them down into a nice set
> of easy to review patches.
> One of the problems of preserving the micro-detail of history right
> from the early inception of support for a platform is that quite often
> the early support is buggy or broken - it might not even compile.  There
> may be 20 or so patches on top of that which eventually get it to a
> usable state.
> Do we really want to put off people from reviewing patches because of
> the size of micro-development that happened prior to getting to a point
> where the result of that development is usable?
> Tell me this: does a patch which cleanly adds support for board X get
> reviewed by more, the same, or less people than a set of twenty patches
> which goes about the same thing, adding code, removing previously added
> code, changing it again.
> I personally _hate_ patch sets which do that, and I tend to ignore them
> (or maybe review the first twenty patches before taking a break... and
> then never going back to them) because I quickly get tired reading all
> that code - which means I'm not able to do an effective review.  I
> suspect most people suffer from reviewer tiredness when faced with large
> patch sets changing the same code time and time again.
> I personally believe that Daniel is doing the right thing here, except
> he needs to preserve a better record of authorship.  I even think it's
> fine if he decides to drop people's sign-offs if he thinks the code has
> changed significantly from the original authors - provided he's willing
> to take responsibility for the submission of that code.
> If you read what a sign-off means (the DCO) then it's clear that if the
> code has changed significantly, the original sign-offs do not apply
> anymore - the original sign-offs can't warrant that the modified code
> is covered by appropriate licenses or even that the person who modified
> their code has the rights to submit it.
> Take a moment to think about that.  If I took some of your code with
> your sign-off, changed it significantly by including someone elses work
> where there were no rights to submit that persons work into mainline,
> and I kept your sign-off on that, would you be happy when someone starts
> making accusations against you submitting their code?
> The sign-offs make no representation of who was the author.  In many
> cases where companies are involved, the first sign-off is the person
> who authorized the release of the code, not the person who wrote the
> code, so it's a complete mistake to attribute authorship by whoever was
> listed first in the Sign-off lines.  Authorship may be jointly held by
> the first 4 people listed, and attributing authorship to only the first
> is just as bad as not attributing authorship at all.
> Lastly, from the arguments being made over this, if they are supported,
> I think that people are saying that the actions listed in DCO (b) are
> no longer allowed, and so DCO (b) should be removed entirely as an
> acceptable practice.  IOW, what's being promoted as "you must do" (iow,
> preserving all history) is completely contary to the allowances of
> DCO (b).

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