linux-kernel - Re: linux-next: Tree for June 24 (mtd + of)

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Date:	Sun, 26 Jun 2011 00:11:40 -0600
From:	Grant Likely <grant.likely@...retlab.ca>
To:	Randy Dunlap <randy.dunlap@...cle.com>
Cc:	dedekind1@...il.com, Stephen Rothwell <sfr@...b.auug.org.au>,
	David Woodhouse <dwmw2@...radead.org>,
	linux-mtd@...ts.infradead.org, linux-next@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>,
	Vitaly Wool <vwool@...mvista.com>
Subject: Re: linux-next: Tree for June 24 (mtd + of)

On Sat, Jun 25, 2011 at 4:20 PM, Randy Dunlap <randy.dunlap@...cle.com> wrote:
> On Sat, 25 Jun 2011 09:35:13 +0300 Artem Bityutskiy wrote:
>
>> On Fri, 2011-06-24 at 13:38 -0700, Randy Dunlap wrote:
>> > On 06/24/11 13:26, Artem Bityutskiy wrote:
>> > > On Fri, 2011-06-24 at 09:04 -0700, Randy Dunlap wrote:
>> > >> On Fri, 24 Jun 2011 15:58:22 +1000 Stephen Rothwell wrote:
>> > >>
>> > >>> Hi all,
>> > >>>
>> > >>> Changes since 20110623:
>> > >>>
>> > >>> My fixes tree includes:
>> > >>>         (as an experiment) the early part of mmotm-2011-06-22-13-05
>> > >>>         STAGING: Comedi: Build only on arches providing PAGE_KERNEL_NOCACHE
>> > >>
>> > >>
>> > >> When CONFIG_MTD=m, CONFIG_MTD_OF_PARTS=y:
>> > >>
>> > >> drivers/mtd/ofpart.o: In function `init_module':
>> > >> ofpart.c:(.init.text+0x0): multiple definition of `init_module'
>> > >> drivers/mtd/mtdcore.o:(.init.text+0x43): first defined here
>> > >
>> > > I guess this is some old issue? I do not think ofpart can be compiled-in
>> > > if the mtd core is a module...
>> >
>> > [adding driver author, Vitaly]
>> >
>> > No, it's a current issue.
>>
>> I meant that the subject suggests this is about linux-next, but this
>> problem should be in upstream.
>
> Sorry I misunderstood your comment.
>
> 3.0-rc4 does not have this build error when I use the .config file with it...
> however, I think that 3.0-rc4 also does not build ofpart.ko as it should.
>
> Looks to me like changes in drivers/mtd/{Kconfig && Makefile} caused this
> build error.

The following commit in linux-next appears to be the culprit:

commit 1a6bc893044b961caae1c5a9c6c2065e608da427
Author: Dmitry Eremin-Solenikov <dbaryshkov@...il.com>
Date:   Sun May 29 21:32:33 2011 +0400

    mtd: prepare to convert of_mtd_parse_partitions to partition parser

    Prepare to convert of_mtd_parse_partitions() to usual partitions parser:
    1) Register ofpart parser
    2) Internally don't use passed device for error printing
    3) Add device_node to mtd_part_parser_data struct
    4) Move of_mtd_parse_partitions from __devinit to common text section
    5) add ofpart to the default list of partition parsers

    Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@...il.com>
    Signed-off-by: Artem Bityutskiy <dedekind1@...il.com>

It adds a module_init() call to ofpart.c which does not work the way
that ofpart.c is linked to mtdcore.o.  Seems like that commit series
still needs work.

g.
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