Re: [PATCH] Input: novatek-nvt-ts - support being panel follower

Re: [PATCH] Input: novatek-nvt-ts - support being panel follower

[kernel test robot]

:::::: 
:::::: Manual check reason: "linux-review patch is more than 7 days old, verify it wasn't already superseded"
:::::: 

BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
In-Reply-To: <20260718135316.785467-1-morf3089@gmail.com>
References: <20260718135316.785467-1-morf3089@gmail.com>
TO: Gianluca Boiano <morf3089@gmail.com>
TO: hansg@kernel.org
TO: dmitry.torokhov@gmail.com
CC: alexeymin@minlexx.ru
CC: linux-input@vger.kernel.org
CC: linux-kernel@vger.kernel.org
CC: Gianluca Boiano <morf3089@gmail.com>

Hi Gianluca,

kernel test robot noticed the following build errors:

[auto build test ERROR on dtor-input/next]
[also build test ERROR on dtor-input/for-linus linus/master v7.2 next-20260821]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Gianluca-Boiano/Input-novatek-nvt-ts-support-being-panel-follower/20260814-194645
base:   https://git.kernel.org/pub/scm/linux/kernel/git/dtor/input.git next
patch link:    https://lore.kernel.org/r/20260718135316.785467-1-morf3089%40gmail.com
patch subject: [PATCH] Input: novatek-nvt-ts - support being panel follower
:::::: branch date: 10 days ago
:::::: commit date: 10 days ago
config: x86_64-randconfig-161-20251128 (https://download.01.org/0day-ci/archive/20260824/202608241543.nN8bvvPX-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260824/202608241543.nN8bvvPX-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/r/202608241543.nN8bvvPX-lkp@intel.com/

All errors (new ones prefixed by >>):

   ld: drivers/input/touchscreen/novatek-nvt-ts.o: in function `nvt_ts_probe':
>> drivers/input/touchscreen/novatek-nvt-ts.c:382:(.text+0x1037): undefined reference to `drm_is_panel_follower'
>> ld: drivers/input/touchscreen/novatek-nvt-ts.c:390:(.text+0x10a2): undefined reference to `devm_drm_panel_add_follower'


vim +382 drivers/input/touchscreen/novatek-nvt-ts.c

409af9ae8a8c78 Alexey Minnekhanov 2026-07-18  363  
409af9ae8a8c78 Alexey Minnekhanov 2026-07-18  364  static int nvt_ts_probe(struct i2c_client *client)
409af9ae8a8c78 Alexey Minnekhanov 2026-07-18  365  {
409af9ae8a8c78 Alexey Minnekhanov 2026-07-18  366  	struct device *dev = &client->dev;
409af9ae8a8c78 Alexey Minnekhanov 2026-07-18  367  	struct nvt_ts_data *data;
409af9ae8a8c78 Alexey Minnekhanov 2026-07-18  368  
409af9ae8a8c78 Alexey Minnekhanov 2026-07-18  369  	if (!client->irq) {
409af9ae8a8c78 Alexey Minnekhanov 2026-07-18  370  		dev_err(dev, "Error no irq specified\n");
409af9ae8a8c78 Alexey Minnekhanov 2026-07-18  371  		return -EINVAL;
409af9ae8a8c78 Alexey Minnekhanov 2026-07-18  372  	}
409af9ae8a8c78 Alexey Minnekhanov 2026-07-18  373  
409af9ae8a8c78 Alexey Minnekhanov 2026-07-18  374  	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
409af9ae8a8c78 Alexey Minnekhanov 2026-07-18  375  	if (!data)
409af9ae8a8c78 Alexey Minnekhanov 2026-07-18  376  		return -ENOMEM;
409af9ae8a8c78 Alexey Minnekhanov 2026-07-18  377  
409af9ae8a8c78 Alexey Minnekhanov 2026-07-18  378  	data->client = client;
409af9ae8a8c78 Alexey Minnekhanov 2026-07-18  379  	i2c_set_clientdata(client, data);
409af9ae8a8c78 Alexey Minnekhanov 2026-07-18  380  
409af9ae8a8c78 Alexey Minnekhanov 2026-07-18  381  	/* Check if "panel = <&...>" is set in DT */
409af9ae8a8c78 Alexey Minnekhanov 2026-07-18 @382  	if (drm_is_panel_follower(dev)) {
409af9ae8a8c78 Alexey Minnekhanov 2026-07-18  383  		data->is_panel_follower = true;
409af9ae8a8c78 Alexey Minnekhanov 2026-07-18  384  		data->panel_follower.funcs = &nvt_ts_follower_funcs;
409af9ae8a8c78 Alexey Minnekhanov 2026-07-18  385  		/*
409af9ae8a8c78 Alexey Minnekhanov 2026-07-18  386  		 * In this mode, we defer everything to the panel callbacks.
409af9ae8a8c78 Alexey Minnekhanov 2026-07-18  387  		 * The initial power on and input device registration will
409af9ae8a8c78 Alexey Minnekhanov 2026-07-18  388  		 * happen in on_novatek_panel_prepared().
409af9ae8a8c78 Alexey Minnekhanov 2026-07-18  389  		 */
409af9ae8a8c78 Alexey Minnekhanov 2026-07-18 @390  		return devm_drm_panel_add_follower(dev, &data->panel_follower);
409af9ae8a8c78 Alexey Minnekhanov 2026-07-18  391  	}
409af9ae8a8c78 Alexey Minnekhanov 2026-07-18  392  
409af9ae8a8c78 Alexey Minnekhanov 2026-07-18  393  	return nvt_ts_initial_power_on_and_register_inputdev(data);
409af9ae8a8c78 Alexey Minnekhanov 2026-07-18  394  }
409af9ae8a8c78 Alexey Minnekhanov 2026-07-18  395  

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