Re: [GIT PULL for v3.15-rc1] media updates

[Laurent Pinchart <laurent.pinchart@ideasonboard.com>]

Hi Linus,

On Friday 04 April 2014 10:26:42 Linus Torvalds wrote:
> On Thu, Apr 3, 2014 at 9:11 AM, Mauro Carvalho Chehab wrote:
> > PS.: You'll find some minor conflicts between this changeset and upstream,
> > mainly due to some code that moved from V4L2 to OF subsystem.
> 
> That conflict was not at all minor, unless I were willing to do the
> merge incorrectly and just drop all changes from one side. Which is
> not how I do merges if I can at all avoid it.
> 
> The *trivial* merge would be to just take the
> of_graph_get_next_endpoint() function as it existed in its new
> location of drivers/of/base.c.
> 
> However, there were to clashing changes to that function (one in the
> original location, one in the new moved location). They were:
> 
>  - b9db140c1e46: "[media] v4l: of: Support empty port nodes"
>  - 4329b93b283c: "of: Reduce indentation in of_graph_get_next_endpoint"
> 
> and quite frankly, I think that the second commit was the much less
> interesting of the two, so *that* was the one I felt I should drop.
> But that made the merge a lot more interesting than just picking the
> new location (because the new location didn't have the important
> change). And those two changes clash to the point of being basically
> mutually exclusive.
> 
> So I did the complex merge that I think is the right thing by hand.
> 
> However, I feel a bit bad about that more merge, because I have
> absolutely no way to test my result. So I'm including here all the
> relevant people wrt those two commits, and my note from my merge
> message:
> 
>   NOTE! This merge effective drops commit 4329b93b283c ("of: Reduce
>   indentation in of_graph_get_next_endpoint").
> 
>   The of_graph_get_next_endpoint() function was moved and renamed by
>   commit fd9fdb78a9bf ("[media] of: move graph helpers from
>   drivers/media/v4l2-core to drivers/of").  It was originally called
>   v4l2_of_get_next_endpoint() and lived in the file
>   drivers/media/v4l2-core/v4l2-of.c.
> 
>   In that original location, it was then fixed to support empty port
>   nodes by commit b9db140c1e46 ("[media] v4l: of: Support empty port
>   nodes"), and that commit clashes badly with the dropped "Reduce
>   intendation" commit.  I had to choose one or the other, and decided
>   that the "Support empty port nodes" commit was more important
> 
> So guys, can you please verify the end result? It looks sane to me,
> but there's no good way for me to do even basic compile testing of the
> OF code, so this was all done entirely blind. And hey, maybe you
> disagree about the empty port nodes being the important case anyway.
> 
> Maybe I should have done the "wrong" merge just to avoid this issue,
> but I do hate doing that.

I've reviewed the merge and tested it, and all looks good. Thank you for not 
dropping my patch :-)

-- 
Regards,

Laurent Pinchart