Hi Dmitry,

I love your patch! Yet something to improve:

[auto build test ERROR on char-misc/char-misc-testing]
[cannot apply to v5.4-rc1 next-20191002]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    
https://github.com/0day-ci/linux/commits/Dmitry-Torokhov/lis3lv02d-switch-to-using-input-device-polling-mode/20191003-062746
config: parisc-allyesconfig (attached as .config)
compiler: hppa-linux-gcc (GCC) 7.4.0
reproduce:
        wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=7.4.0 make.cross ARCH=parisc 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <[email protected]>

All errors (new ones prefixed by >>):

   drivers/misc/lis3lv02d/lis3lv02d.c: In function 'lis3lv02d_joystick_enable':
   drivers/misc/lis3lv02d/lis3lv02d.c:713:8: error: implicit declaration of 
function 'input_setup_polling'; did you mean 'input_set_capability'? 
[-Werror=implicit-function-declaration]
     err = input_setup_polling(input_dev, lis3lv02d_joystick_poll);
           ^~~~~~~~~~~~~~~~~~~
           input_set_capability
>> drivers/misc/lis3lv02d/lis3lv02d.c:717:2: error: implicit declaration of 
>> function 'input_set_poll_interval'; did you mean '__put_user_internal'? 
>> [-Werror=implicit-function-declaration]
     input_set_poll_interval(input_dev, MDPS_POLL_INTERVAL);
     ^~~~~~~~~~~~~~~~~~~~~~~
     __put_user_internal
   drivers/misc/lis3lv02d/lis3lv02d.c:718:2: error: implicit declaration of 
function 'input_set_min_poll_interval' [-Werror=implicit-function-declaration]
     input_set_min_poll_interval(input_dev, MDPS_POLL_MIN);
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/misc/lis3lv02d/lis3lv02d.c:719:2: error: implicit declaration of 
function 'input_set_max_poll_interval'; did you mean 'input_set_capability'? 
[-Werror=implicit-function-declaration]
     input_set_max_poll_interval(input_dev, MDPS_POLL_MAX);
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~
     input_set_capability
   cc1: some warnings being treated as errors

vim +717 drivers/misc/lis3lv02d/lis3lv02d.c

   671  
   672  int lis3lv02d_joystick_enable(struct lis3lv02d *lis3)
   673  {
   674          struct input_dev *input_dev;
   675          int err;
   676          int max_val, fuzz, flat;
   677          int btns[] = {BTN_X, BTN_Y, BTN_Z};
   678  
   679          if (lis3->idev)
   680                  return -EINVAL;
   681  
   682          input_dev = input_allocate_device();
   683          if (!input_dev)
   684                  return -ENOMEM;
   685  
   686          input_dev->name       = "ST LIS3LV02DL Accelerometer";
   687          input_dev->phys       = DRIVER_NAME "/input0";
   688          input_dev->id.bustype = BUS_HOST;
   689          input_dev->id.vendor  = 0;
   690          input_dev->dev.parent = &lis3->pdev->dev;
   691  
   692          input_dev->open = lis3lv02d_joystick_open;
   693          input_dev->close = lis3lv02d_joystick_close;
   694  
   695          max_val = (lis3->mdps_max_val * lis3->scale) / LIS3_ACCURACY;
   696          if (lis3->whoami == WAI_12B) {
   697                  fuzz = LIS3_DEFAULT_FUZZ_12B;
   698                  flat = LIS3_DEFAULT_FLAT_12B;
   699          } else {
   700                  fuzz = LIS3_DEFAULT_FUZZ_8B;
   701                  flat = LIS3_DEFAULT_FLAT_8B;
   702          }
   703          fuzz = (fuzz * lis3->scale) / LIS3_ACCURACY;
   704          flat = (flat * lis3->scale) / LIS3_ACCURACY;
   705  
   706          input_set_abs_params(input_dev, ABS_X, -max_val, max_val, fuzz, 
flat);
   707          input_set_abs_params(input_dev, ABS_Y, -max_val, max_val, fuzz, 
flat);
   708          input_set_abs_params(input_dev, ABS_Z, -max_val, max_val, fuzz, 
flat);
   709  
   710          input_set_drvdata(input_dev, lis3);
   711          lis3->idev = input_dev;
   712  
 > 713          err = input_setup_polling(input_dev, lis3lv02d_joystick_poll);
   714          if (err)
   715                  goto err_free_input;
   716  
 > 717          input_set_poll_interval(input_dev, MDPS_POLL_INTERVAL);
   718          input_set_min_poll_interval(input_dev, MDPS_POLL_MIN);
   719          input_set_max_poll_interval(input_dev, MDPS_POLL_MAX);
   720  
   721          lis3->mapped_btns[0] = lis3lv02d_get_axis(abs(lis3->ac.x), 
btns);
   722          lis3->mapped_btns[1] = lis3lv02d_get_axis(abs(lis3->ac.y), 
btns);
   723          lis3->mapped_btns[2] = lis3lv02d_get_axis(abs(lis3->ac.z), 
btns);
   724  
   725          err = input_register_device(lis3->idev);
   726          if (err)
   727                  goto err_free_input;
   728  
   729          return 0;
   730  
   731  err_free_input:
   732          input_free_device(input_dev);
   733          lis3->idev = NULL;
   734          return err;
   735  

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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