[PATCH 1/2] drm/input_helper: Add new input-handling helper

[Brian Norris]

On Thu, Nov 04, 2021 at 06:47:34PM +0800, kernel test robot wrote:
> Hi Brian,

Hi robot!

> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp at intel.com>

I'm not sure how to do that in a v2 patch -- one doesn't normally credit
"Reported-by" for every testing/review improvement on an in-development
patch series.

> All errors (new ones prefixed by >>):
> 
>    or1k-linux-ld: drivers/gpu/drm/drm_input_helper.o: in function `drm_input_disconnect':
> >> drm_input_helper.c:(.text+0x48): undefined reference to `input_close_device'

I've cooked a local change to separate the CONFIG_INPUT dependencies
under another Kconfig symbol which optionally builds this stuff into the
drm helper module, only when CONFIG_INPUT is present. That should fix
the build issues while still leaving DRM_KMS_HELPER workable with or
without CONFIG_INPUT.

I'll wait to see if there's any other feedback before spinning though.

Brian