linux-kernel - Re: 3.9-rc1 regression in arm dtb build

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Date:	Mon, 11 Mar 2013 19:00:47 +0800
From:	Grant Likely <grant.likely@...retlab.ca>
To:	Olof Johansson <olof@...om.net>
Cc:	Stephen Warren <swarren@...dotorg.org>,
	Pavel Machek <pavel@....cz>,
	kernel list <linux-kernel@...r.kernel.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	Arnd Bergmann <arnd@...db.de>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Rob Herring <rob.herring@...xeda.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: 3.9-rc1 regression in arm dtb build

On Mon, Mar 11, 2013 at 1:05 PM, Olof Johansson <olof@...om.net> wrote:
> On Thu, Mar 07, 2013 at 01:50:54PM -0700, Stephen Warren wrote:
>> On 03/07/2013 07:45 AM, Pavel Machek wrote:
>> > Hi!
>> >>> commit 499cd8298628eeabf0eb5eb6525d4faa0eec80d8
>> >>> Author: Grant Likely <grant.likely@...retlab.ca>
>> >>> Date:   Tue Nov 27 16:29:11 2012 -0700
>> > ...
>> >>> 1) it is inconsistent with 3.8, making switching between 3.9-rc1 and
>> >>> 3.8 tricky
>> >>
>> >> It's pretty easy to locate the DTB by automatically looking in
>> >> arch/*/boot/dts first, then if the file doesn't exist there, looking in
>> >> arch/*/boot instead as a legacy fallback.
>> >
>> > Unfortunately, that does not work. See 2) below. Stale files even
>> > survive "make clean".
>>
>> Oh right. I guess it works fine when having built 3.7 and then building
>> 3.8, since you'd look in the new location first and only fall back to
>> the old location if missing. However, if you then switch back to 3.7 to
>> test something, I guess that doesn't work so well.
>>
>> I tend to always build the dtbs target, so I wasn't affected by this.
>> And, often run "git clean -f -d -x" too.
>>
>> Grant, what's your call on this issue; should I/you look into ways to
>> clean the files better, or do you want to revert this?
>
> I'm not Grant, but I think we're better off cleaning up the current situation
> instead of reverting. Otherwise 3.8 will be the oddball weird release; it's
> better to get people moved over to the new location.

Don't revert. It needs to be fixed up. Pavel, if you're really choked
up about this we can symlink the files from the old location to the
new. I personally don't think it is that onerous a change though since
the files are easy to find and build systems can adapt.

g.
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