Hi Nikolaus,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on char-misc/char-misc-testing]
[also build test WARNING on v4.14 next-20171115]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:    
https://github.com/0day-ci/linux/commits/H-Nikolaus-Schaller/misc-new-serdev-based-drivers-for-Wi2Wi-w2sg00x4-GPS-module/20171115-115158
config: tile-allmodconfig (attached as .config)
compiler: tilegx-linux-gcc (GCC) 4.6.2
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
        make.cross ARCH=tile 

All warnings (new ones prefixed by >>):

   drivers/misc/w2sg0004.c: In function 'w2sg_uart_receive_buf':
>> drivers/misc/w2sg0004.c:156:3: warning: format '%d' expects argument of type 
>> 'int', but argument 3 has type 'size_t' [-Wformat]
   drivers/misc/w2sg0004.c:161:4: warning: format '%d' expects argument of type 
'int', but argument 2 has type 'size_t' [-Wformat]
   drivers/misc/w2sg0004.c: At top level:
   drivers/misc/w2sg0004.c:487:12: warning: 'w2sg_suspend' defined but not used 
[-Wunused-function]
   drivers/misc/w2sg0004.c:523:12: warning: 'w2sg_resume' defined but not used 
[-Wunused-function]

vim +156 drivers/misc/w2sg0004.c

   125  
   126  static int w2sg_uart_receive_buf(struct serdev_device *serdev,
   127                                  const unsigned char *rxdata,
   128                                  size_t count)
   129  {
   130          struct w2sg_data *data =
   131                  (struct w2sg_data *) serdev_device_get_drvdata(serdev);
   132  
   133          if (!data->requested && !data->is_on) {
   134                  /*
   135                   * we have received characters while the w2sg
   136                   * should have been be turned off
   137                   */
   138                  data->discard_count += count;
   139                  if ((data->state == W2SG_IDLE) &&
   140                      time_after(jiffies,
   141                      data->last_toggle + data->backoff)) {
   142                          /* Should be off by now, time to toggle again */
   143                          pr_debug("w2sg00x4 has sent %d characters data 
although it should be off!\n",
   144                                  data->discard_count);
   145  
   146                          data->discard_count = 0;
   147  
   148                          data->is_on = true;
   149                          data->backoff *= 2;
   150                          if (!data->suspended)
   151                                  schedule_delayed_work(&data->work, 0);
   152                  }
   153          } else if (data->open_count > 0) {
   154                  int n;
   155  
 > 156                  pr_debug("w2sg00x4: push %d chars to tty port\n", 
 > count);
   157  
   158                  /* pass to user-space */
   159                  n = tty_insert_flip_string(&data->port, rxdata, count);
   160                  if (n != count)
   161                          pr_err("w2sg00x4: did loose %d characters\n", 
count - n);
   162                  tty_flip_buffer_push(&data->port);
   163                  return n;
   164          }
   165  
   166          /* assume we have processed everything */
   167          return count;
   168  }
   169  

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

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