Re: [PATCH] drm/bridge: fix RC_CORE dependency

From: Andrzej Hajda
Date: Thu Jul 18 2019 - 10:56:02 EST

On 18.07.2019 16:21, Arnd Bergmann wrote:
> On Thu, Jul 18, 2019 at 4:16 PM Andrzej Hajda <a.hajda@xxxxxxxxxxx> wrote:
>> Hi Arnd,
>> On 18.07.2019 15:42, Arnd Bergmann wrote:
>>> Using 'imply' causes a new problem, as it allows the case of
>>> CONFIG_INPUT=m with RC_CORE=y, which fails to link:
>>> drivers/media/rc/rc-main.o: In function `ir_do_keyup':
>>> rc-main.c:(.text+0x2b4): undefined reference to `input_event'
>>> drivers/media/rc/rc-main.o: In function `rc_repeat':
>>> rc-main.c:(.text+0x350): undefined reference to `input_event'
>>> drivers/media/rc/rc-main.o: In function `rc_allocate_device':
>>> rc-main.c:(.text+0x90c): undefined reference to `input_allocate_device'
>>> Add a 'depends on' that allows building both with and without
>>> CONFIG_RC_CORE, but disallows combinations that don't link.
>>> Fixes: 5023cf32210d ("drm/bridge: make remote control optional")
>>> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
>> Proper solution has been already merged via input tree[1].
>> [1]:
> At that link, I only see the patch that caused the regression, not
> the solution. Are you sure it's fixed?

Ups, you are right, I though you are fixing what this patch attempted to
fix :)

Anyway, we want to avoid dependency on RC_CORE - this driver does not
require it, but with RC_CORE it has additional features.

Maybe "imply INPUT" would help?



> Arnd