Hi Matt,

[auto build test ERROR on linuxtv-media/master]
[also build test ERROR on v4.9-rc4 next-20161028]
[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/Matt-Ranostay/media-i2c-polling-add-i2c-polling-driver/20161107-092444
base:   git://linuxtv.org/media_tree.git master
config: x86_64-randconfig-x017-11071730 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All error/warnings (new ones prefixed by >>):

   drivers/media/i2c/i2c-polling.c: In function 'i2c_polling_probe':
>> drivers/media/i2c/i2c-polling.c:379:9: error: implicit declaration of 
>> function 'kzalloc' [-Werror=implicit-function-declaration]
     data = kzalloc(sizeof(*data), GFP_KERNEL);
            ^~~~~~~
>> drivers/media/i2c/i2c-polling.c:379:7: warning: assignment makes pointer 
>> from integer without a cast [-Wint-conversion]
     data = kzalloc(sizeof(*data), GFP_KERNEL);
          ^
>> drivers/media/i2c/i2c-polling.c:432:2: error: implicit declaration of 
>> function 'kfree' [-Werror=implicit-function-declaration]
     kfree(data);
     ^~~~~
   cc1: some warnings being treated as errors

vim +/kzalloc +379 drivers/media/i2c/i2c-polling.c

   373  {
   374          struct i2c_polling_data *data;
   375          struct v4l2_device *v4l2_dev;
   376          struct vb2_queue *queue;
   377          int ret;
   378  
 > 379          data = kzalloc(sizeof(*data), GFP_KERNEL);
   380          if (!data)
   381                  return -ENOMEM;
   382  
   383          data->chip = &i2c_polling_chips[id->driver_data];
   384          data->client = client;
   385          data->last_update = jiffies;
   386          v4l2_dev = &data->v4l2_dev;
   387          strlcpy(v4l2_dev->name, I2C_POLLING_DRIVER, 
sizeof(v4l2_dev->name));
   388  
   389          ret = v4l2_device_register(&client->dev, v4l2_dev);
   390          if (ret < 0)
   391                  goto error_free_device;
   392  
   393          mutex_init(&data->lock);
   394          mutex_init(&data->queue_lock);
   395  
   396          queue = &data->vb_vidq;
   397          queue->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
   398          queue->io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ;
   399          queue->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
   400          queue->drv_priv = data;
   401          queue->ops = &i2c_polling_video_qops;
   402          queue->mem_ops = &vb2_vmalloc_memops;
   403  
   404          ret = vb2_queue_init(queue);
   405          if (ret < 0)
   406                  goto error_free_device;
   407  
   408          data->vdev.queue = queue;
   409          data->vdev.queue->lock = &data->queue_lock;
   410  
   411          strlcpy(data->vdev.name, "I2C Polling Video", 
sizeof(data->vdev.name));
   412  
   413          data->vdev.v4l2_dev = v4l2_dev;
   414          data->vdev.fops = &i2c_polling_fops;
   415          data->vdev.lock = &data->lock;
   416          data->vdev.ioctl_ops = &i2c_polling_ioctl_ops;
   417          data->vdev.release = video_device_release_empty;
   418  
   419          video_set_drvdata(&data->vdev, data);
   420          i2c_set_clientdata(client, data);
   421  
   422          ret = video_register_device(&data->vdev, VFL_TYPE_GRABBER, -1);
   423          if (ret < 0)
   424                  goto error_unregister_device;
   425  
   426          return 0;
   427  
   428  error_unregister_device:
   429          v4l2_device_unregister(v4l2_dev);
   430  
   431  error_free_device:
 > 432          kfree(data);
   433  
   434          return ret;
   435  }

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

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