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charset=us-ascii Content-Disposition: inline :::::: :::::: Manual check reason: "gcc: unused function warning for stub function" :::::: BCC: lkp@intel.com CC: oe-kbuild-all@lists.linux.dev TO: Russell King 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 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 :::::: CC: Russell King (Oracle) -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests