tree:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git 
staging-testing
head:   501b9cb070bc35073f4195b58e74098a9d31375c
commit: 501b9cb070bc35073f4195b58e74098a9d31375c [217/217] staging: nvec: add 
error checking to nvec_event
config: arm-multi_v7_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
        wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 501b9cb070bc35073f4195b58e74098a9d31375c
        # save the attached .config to linux build tree
        make.cross ARCH=arm 

All warnings (new ones prefixed by >>):

   drivers/staging/nvec/nvec_power.c: In function 'nvec_power_poll':
>> drivers/staging/nvec/nvec_power.c:361:10: warning: 'return' with a value, in 
>> function returning void
      return err;
             ^~~
   drivers/staging/nvec/nvec_power.c:348:13: note: declared here
    static void nvec_power_poll(struct work_struct *work)
                ^~~~~~~~~~~~~~~

vim +/return +361 drivers/staging/nvec/nvec_power.c

   347  
   348  static void nvec_power_poll(struct work_struct *work)
   349  {
   350          int err;
   351          char buf[] = { NVEC_SYS, GET_SYSTEM_STATUS };
   352          struct nvec_power *power = container_of(work, struct nvec_power,
   353                                                  poller.work);
   354  
   355          if (counter >= ARRAY_SIZE(bat_iter))
   356                  counter = 0;
   357  
   358          /* AC status via sys req */
   359          err = nvec_write_async(power->nvec, buf, 2);
   360          if (err != 0)
 > 361                  return err;
   362  
   363          msleep(100);
   364  
   365          /*
   366           * Select a battery request function via round robin doing it 
all at
   367           * once seems to overload the power supply.
   368           */
   369          buf[0] = NVEC_BAT;
   370          buf[1] = bat_iter[counter++];
   371          nvec_write_async(power->nvec, buf, 2);
   372  
   373          schedule_delayed_work(to_delayed_work(work), 
msecs_to_jiffies(5000));
   374  };
   375  

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

Attachment: .config.gz
Description: application/gzip

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