linux-kernel - Re: [PATCH] [media] sti: hdmi: improve MEDIA_CEC

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Date:   Thu, 20 Apr 2017 18:34:20 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Hans Verkuil <hverkuil@...all.nl>
Cc:     Mauro Carvalho Chehab <mchehab@...pensource.com>,
        Hans Verkuil <hans.verkuil@...co.com>,
        linux-media@...r.kernel.org,
        Benjamin Gaignard <benjamin.gaignard@...aro.org>,
        Vincent Abriou <vincent.abriou@...com>,
        David Airlie <airlied@...ux.ie>,
        Arnaud Pouliquen <arnaud.pouliquen@...com>,
        Peter Griffin <peter.griffin@...aro.org>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] [media] sti: hdmi: improve MEDIA_CEC_NOTIFIER dependency

On Wed, Apr 19, 2017 at 11:06 PM, Hans Verkuil <hverkuil@...all.nl> wrote:
> On 19/04/17 18:59, Arnd Bergmann wrote:
>> When the media subsystem is built as a loadable module, a built-in

>> This adds a Kconfig dependency to enforce the HDMI driver to also
>> be a loadable module in this case.
>
> I've marked this patch and the exynos_hdmi patch as 'Obsoleted' in patchwork:
> today several CEC Kconfig cleanup patches were merged that invalidate these
> two patches. I expect they'll turn up soon in -next.

I can confirm that the previous problems are fixed with today's linux-next,
but I have now run into another problem, with CONFIG_INPUT=m forcing
CONFIG_RC_CORE=m:

drivers/media/cec/cec-core.o: In function `cec_unregister_adapter':
cec-core.c:(.text.cec_unregister_adapter+0x18): undefined reference to
`rc_unregister_device'
drivers/media/cec/cec-core.o: In function `cec_delete_adapter':
cec-core.c:(.text.cec_delete_adapter+0x54): undefined reference to
`rc_free_device'
drivers/media/cec/cec-core.o: In function `cec_register_adapter':
cec-core.c:(.text.cec_register_adapter+0x94): undefined reference to
`rc_register_device'
cec-core.c:(.text.cec_register_adapter+0xa4): undefined reference to
`rc_free_device'
cec-core.c:(.text.cec_register_adapter+0x110): undefined reference to
`rc_unregister_device'
drivers/media/cec/cec-core.o: In function `cec_allocate_adapter':
cec-core.c:(.text.cec_allocate_adapter+0x234): undefined reference to
`rc_allocate_device'
drivers/media/cec/cec-adap.o: In function `cec_received_msg':
cec-adap.c:(.text.cec_received_msg+0x734): undefined reference to `rc_keydown'
cec-adap.c:(.text.cec_received_msg+0x768): undefined reference to `rc_keyup'
/git/arm-soc/Makefile:1033: recipe for target 'vmlinux' failed

I don't see an obvious fix for  this, and as you seem to have a good grip on the
problem already, I'll let you figure out how to best address it.

       Arnd