Hi Jaedon,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linuxtv-media/master]
[also build test ERROR on v4.15-rc2 next-20171204]
[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/Jaedon-Shin/Add-support-compat-in-dvb_frontend-c/20171204-201817
base:   git://linuxtv.org/media_tree.git master
config: x86_64-randconfig-x014-201749 (attached as .config)
compiler: gcc-7 (Debian 7.2.0-12) 7.2.1 20171025
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   drivers/media/dvb-core/dvb_frontend.c: In function 
'dvb_frontend_compat_ioctl':
>> drivers/media/dvb-core/dvb_frontend.c:1985:54: error: implicit declaration 
>> of function 'compat_ptr'; did you mean 'complete'? 
>> [-Werror=implicit-function-declaration]
     return dvb_frontend_ioctl(file, cmd, (unsigned long)compat_ptr(arg));
                                                         ^~~~~~~~~~
                                                         complete
   cc1: some warnings being treated as errors

vim +1985 drivers/media/dvb-core/dvb_frontend.c

  1980  
  1981  #ifdef CONFIG_COMPAT
  1982  static long dvb_frontend_compat_ioctl(struct file *file, unsigned int 
cmd,
  1983                                        unsigned long arg)
  1984  {
> 1985          return dvb_frontend_ioctl(file, cmd, (unsigned 
> long)compat_ptr(arg));
  1986  }
  1987  #endif
  1988  

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

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