[rmk-arm:clearfog 30/113] drivers/net/dsa/mv88e6xxx/mv88e6xxx_debugfs.c:52:12: warning: '_mv88e6xxx_pvt_read' defined but not used

[kernel test robot <lkp@intel.com>]

:::::: 
:::::: Manual check reason: "gcc: unused function warning for stub function"
:::::: 

BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
TO: Russell King <rmk+kernel@armlinux.org.uk>

Hi Russell,

First bad commit (maybe != root cause):

tree:   git://git.armlinux.org.uk/~rmk/linux-arm clearfog
head:   1a836e3b4d162d37b94f04eeda458d91bf2a50f7
commit: 32ae8731c815b8ff45d924fdde9d83ea75d8966d [30/113] net: dsa: mv88e6xxx: debugfs hacks to fix the compile
:::::: branch date: 14 hours ago
:::::: commit date: 5 weeks ago
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20230119/202301190945.FYJ35idd-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-8) 11.3.0
reproduce (this is a W=1 build):
        git remote add rmk-arm git://git.armlinux.org.uk/~rmk/linux-arm
        git fetch --no-tags rmk-arm clearfog
        git checkout 32ae8731c815b8ff45d924fdde9d83ea75d8966d
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 olddefconfig
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/net/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   In file included from drivers/net/dsa/mv88e6xxx/chip.c:3676:
>> drivers/net/dsa/mv88e6xxx/mv88e6xxx_debugfs.c:52:12: warning: '_mv88e6xxx_pvt_read' defined but not used [-Wunused-function]
      52 | static int _mv88e6xxx_pvt_read(struct mv88e6xxx_chip *chip, int src_dev,
         |            ^~~~~~~~~~~~~~~~~~~


vim +/_mv88e6xxx_pvt_read +52 drivers/net/dsa/mv88e6xxx/mv88e6xxx_debugfs.c

34805366786a19d Vivien Didelot 2015-10-22  51  
34805366786a19d Vivien Didelot 2015-10-22 @52  static int _mv88e6xxx_pvt_read(struct mv88e6xxx_chip *chip, int src_dev,
34805366786a19d Vivien Didelot 2015-10-22  53  			       int src_port, u16 *data)
34805366786a19d Vivien Didelot 2015-10-22  54  {
34805366786a19d Vivien Didelot 2015-10-22  55  	int ret;
34805366786a19d Vivien Didelot 2015-10-22  56  
34805366786a19d Vivien Didelot 2015-10-22  57  	ret = _mv88e6xxx_pvt_wait(chip);
34805366786a19d Vivien Didelot 2015-10-22  58  	if (ret < 0)
34805366786a19d Vivien Didelot 2015-10-22  59  		return ret;
34805366786a19d Vivien Didelot 2015-10-22  60  
34805366786a19d Vivien Didelot 2015-10-22  61  	ret = _mv88e6xxx_pvt_cmd(chip, src_dev, src_port,
34805366786a19d Vivien Didelot 2015-10-22  62  				GLOBAL2_PVT_ADDR_OP_READ);
34805366786a19d Vivien Didelot 2015-10-22  63  	if (ret < 0)
34805366786a19d Vivien Didelot 2015-10-22  64  		return ret;
34805366786a19d Vivien Didelot 2015-10-22  65  
34805366786a19d Vivien Didelot 2015-10-22  66  	return mv88e6xxx_g2_read(chip, GLOBAL2_PVT_DATA, data);
34805366786a19d Vivien Didelot 2015-10-22  67  }
34805366786a19d Vivien Didelot 2015-10-22  68  

:::::: The code at line 52 was first introduced by commit
:::::: 34805366786a19df154fa78df536503f6ef508d1 net: dsa: mv88e6xxx: add debugfs interface

:::::: TO: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
:::::: CC: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>

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