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Message-ID: <202307270631.RUr9mtaB-lkp@intel.com>
Date:   Thu, 27 Jul 2023 06:32:12 +0800
From:   kernel test robot <lkp@...el.com>
To:     Arnd Bergmann <arnd@...nel.org>,
        Sudip Mukherjee <sudipm.mukherjee@...il.com>
Cc:     oe-kbuild-all@...ts.linux.dev, Arnd Bergmann <arnd@...db.de>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] parport: mfc3: avoid empty-body warning

Hi Arnd,

kernel test robot noticed the following build warnings:

[auto build test WARNING on deller-parisc/for-next]
[also build test WARNING on linus/master v6.5-rc3 next-20230726]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Arnd-Bergmann/parport-mfc3-avoid-empty-body-warning/20230726-231357
base:   https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git for-next
patch link:    https://lore.kernel.org/r/20230726150944.2265044-2-arnd%40kernel.org
patch subject: [PATCH 2/2] parport: mfc3: avoid empty-body warning
config: m68k-allyesconfig (https://download.01.org/0day-ci/archive/20230727/202307270631.RUr9mtaB-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20230727/202307270631.RUr9mtaB-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202307270631.RUr9mtaB-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/parport/parport_mfc3.c: In function 'control_pc_to_mfc3':
>> drivers/parport/parport_mfc3.c:114:28: warning: "/*" within comment [-Wcomment]
     114 |         if (control & 128) /* /INITP */
         |                             
   drivers/parport/parport_mfc3.c: In function 'mfc3_read_control':
   drivers/parport/parport_mfc3.c:132:16: error: implicit declaration of function 'control_mfc3_to_pc'; did you mean 'control_pc_to_mfc3'? [-Werror=implicit-function-declaration]
     132 |         return control_mfc3_to_pc(pia(p)->ppra & 0xe0);
         |                ^~~~~~~~~~~~~~~~~~
         |                control_pc_to_mfc3
   cc1: some warnings being treated as errors


vim +114 drivers/parport/parport_mfc3.c

^1da177e4c3f41 Linus Torvalds 2005-04-16  108  
^1da177e4c3f41 Linus Torvalds 2005-04-16  109  static unsigned char control_mfc3_to_pc(unsigned char control)
^1da177e4c3f41 Linus Torvalds 2005-04-16  110  {
^1da177e4c3f41 Linus Torvalds 2005-04-16  111  	unsigned char ret = PARPORT_CONTROL_STROBE 
^1da177e4c3f41 Linus Torvalds 2005-04-16  112  			  | PARPORT_CONTROL_AUTOFD | PARPORT_CONTROL_SELECT;
^1da177e4c3f41 Linus Torvalds 2005-04-16  113  
^1da177e4c3f41 Linus Torvalds 2005-04-16 @114  	if (control & 128) /* /INITP */
^1da177e4c3f41 Linus Torvalds 2005-04-16  115  		ret |= PARPORT_CONTROL_INIT;
^1da177e4c3f41 Linus Torvalds 2005-04-16  116  	if (control & 64) /* /AUTOLF */
^1da177e4c3f41 Linus Torvalds 2005-04-16  117  		ret &= ~PARPORT_CONTROL_AUTOFD;
^1da177e4c3f41 Linus Torvalds 2005-04-16  118  	if (control & 32) /* /SELECT_IN */
^1da177e4c3f41 Linus Torvalds 2005-04-16  119  		ret &= ~PARPORT_CONTROL_SELECT;
^1da177e4c3f41 Linus Torvalds 2005-04-16  120  	return ret;
^1da177e4c3f41 Linus Torvalds 2005-04-16  121  }
^1da177e4c3f41 Linus Torvalds 2005-04-16  122  

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

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