Re: [PATCH 3/4] Input: st1232 - add virtual touchscreen and buttons handling

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On 15/05/2023 06:34, Javier Carrasco wrote:
> On 14.05.23 00:38, kernel test robot wrote:
>> Hi Javier,
>>
>> kernel test robot noticed the following build errors:
>>
>> [auto build test ERROR on ac9a78681b921877518763ba0e89202254349d1b]
>>
>> url:    https://github.com/intel-lab-lkp/linux/commits/Javier-Carrasco/Input-ts-virtobj-Add-touchsreen-virtual-object-handling/20230510-215519
>> base:   ac9a78681b921877518763ba0e89202254349d1b
>> patch link:    https://lore.kernel.org/r/20230510-feature-ts_virtobj_patch-v1-3-5ae5e81bc264%40wolfvision.net
>> patch subject: [PATCH 3/4] Input: st1232 - add virtual touchscreen and buttons handling
>> config: arm-randconfig-m041-20230514 (https://download.01.org/0day-ci/archive/20230514/202305140640.VLcvhR5G-lkp@xxxxxxxxx/config)
>> compiler: arm-linux-gnueabi-gcc (GCC) 12.1.0
>> reproduce (this is a W=1 build):
>>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>>         chmod +x ~/bin/make.cross
>>         # https://github.com/intel-lab-lkp/linux/commit/133c0f8c33dc5e70a72e6a7d670e133b6043a7a3
>>         git remote add linux-review https://github.com/intel-lab-lkp/linux
>>         git fetch --no-tags linux-review Javier-Carrasco/Input-ts-virtobj-Add-touchsreen-virtual-object-handling/20230510-215519
>>         git checkout 133c0f8c33dc5e70a72e6a7d670e133b6043a7a3
>>         # save the config file
>>         mkdir build_dir && cp config build_dir/.config
>>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm olddefconfig
>>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash
>>
>> If you fix the issue, kindly add following tag where applicable
>> | Reported-by: kernel test robot <lkp@xxxxxxxxx>
>> | Link: https://lore.kernel.org/oe-kbuild-all/202305140640.VLcvhR5G-lkp@xxxxxxxxx/
>>
>> All errors (new ones prefixed by >>):
>>
>>    arm-linux-gnueabi-ld: drivers/input/touchscreen/st1232.o: in function `st1232_ts_parse_and_report':
>>>> st1232.c:(.text+0x148): undefined reference to `ts_virtobj_is_button_slot'
>>>> arm-linux-gnueabi-ld: st1232.c:(.text+0x15e): undefined reference to `ts_virtobj_button_press'
>>>> arm-linux-gnueabi-ld: st1232.c:(.text+0x16c): undefined reference to `ts_virtobj_mt_on_touchscreen'
>>>> arm-linux-gnueabi-ld: st1232.c:(.text+0x242): undefined reference to `ts_virtobj_mapped_buttons'
>>>> arm-linux-gnueabi-ld: st1232.c:(.text+0x266): undefined reference to `ts_virtobj_is_button_slot'
>>>> arm-linux-gnueabi-ld: st1232.c:(.text+0x276): undefined reference to `ts_virtobj_button_release'
>>    arm-linux-gnueabi-ld: drivers/input/touchscreen/st1232.o: in function `st1232_ts_probe':
>>>> st1232.c:(.text+0x42c): undefined reference to `ts_virtobj_map_objects'
>>>> arm-linux-gnueabi-ld: st1232.c:(.text+0x43c): undefined reference to `ts_virtobj_mapped_touchscreen'
>>>> arm-linux-gnueabi-ld: st1232.c:(.text+0x44a): undefined reference to `ts_virtobj_get_touchscreen_abs'
>>    arm-linux-gnueabi-ld: st1232.c:(.text+0x520): undefined reference to `ts_virtobj_mapped_buttons'
>>>> arm-linux-gnueabi-ld: st1232.c:(.text+0x542): undefined reference to `ts_virtobj_set_button_caps'
>>
> Apparently there is something wrong about the references from this patch
> to a previous one from the same series ([PATCH 1/4] Input: ts-virtobj -
> Add touchs[c]reen virtual object handling). The "url" link shows all
> patches of this series in the right order though.
> 
> All these functions are declared in the linux/input/ts-virtobj.h header
> and also inline-defined there if ts-virtobj is not selected. If it is
> selected (either y or M), the functions are exported from
> driver/input/touchscreen/ts-virtobj.c. According to the error report,
> ts-virtobj was selected as a module.
> 
> I could build the kernel with the three possible configurations
> (ts-virtobj y/n/M) for x86_64 as well as for arm64 with no errors or
> warnings repeatedly, so I am a bit confused now. I am probably
> missing something, but I do not know what.
> 
> I wonder if the new file where the functions are defined (ts-virtobj.c)
> could not be found by some reason or if the test build does not like the
> way I handled the function declaration/definition. Any hint or advice
> would be more than welcome.

The report is correct. Build driver builtin and your virtual as module.

Best regards,
Krzysztof




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