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From: Keith Owens <kaos@ocs.com.au>
To: Christoph Lameter <christoph@lameter.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: GPLONLY kernel symbols??? 
In-Reply-To: Your message of "Tue, 16 Oct 2001 09:27:55 MST."
             <Pine.LNX.4.33.0110160927030.24895-100000@devel.office> 
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Date: Wed, 17 Oct 2001 12:17:39 +1000
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On Tue, 16 Oct 2001 09:27:55 -0700 (PDT), 
Christoph Lameter <christoph@lameter.com> wrote:
>I just tried to load the loop driver in 2.4.11
>
>devel:/home/christoph/devel/bf/boot-floppies# insmod loop
>Using /lib/modules/2.4.11/kernel/drivers/block/loop.o
>/lib/modules/2.4.11/kernel/drivers/block/loop.o: unresolved symbol
>invalidate_bdev
>/lib/modules/2.4.11/kernel/drivers/block/loop.o: Note: modules without a
>GPL compatible license cannot use GPLONLY_ symbols
>
>What is THAT?

If a symbol has been exported with EXPORT_SYMBOL_GPL then it appears as
unresolved for modules that do not have a GPL compatible MODULE_LICENCE
string.  So when a module without a GPL compatible MODULE_LICENCE gets
an unresolved symbol, I print that message as a hint to the user.  I
thought the response was obvious, but looks like I need to expand the
hint text even further.

Note: modules without a GPL compatible license cannot use GPLONLY_ symbols.
      This may or may not be your problem, there can be other reasons
      for unresolved symbols.

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