Hi Michael, [FYI, it's a private test report for your RFC patch.] [auto build test ERROR on 1b929c02afd37871d5afb9d498426f83432e71c2] url: https://github.com/intel-lab-lkp/linux/commits/Michael-Walle/net-mdio-Add-dedicated-C45-API-to-MDIO-bus-drivers/20221228-071051 base: 1b929c02afd37871d5afb9d498426f83432e71c2 patch link: https://lore.kernel.org/r/20221227-v6-2-rc1-c45-seperation-v2-6-ddb37710e5a7%40walle.cc patch subject: [PATCH RFC net-next v2 06/12] net: mdio: mdio-bitbang: Separate C22 and C45 transactions config: s390-allyesconfig compiler: s390-linux-gcc (GCC) 12.1.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/intel-lab-lkp/linux/commit/99d47c891245c8c1c9d2d88e2d54333061216102 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Michael-Walle/net-mdio-Add-dedicated-C45-API-to-MDIO-bus-drivers/20221228-071051 git checkout 99d47c891245c8c1c9d2d88e2d54333061216102 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=s390 olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot All errors (new ones prefixed by >>): drivers/net/ethernet/ti/davinci_mdio.c: In function 'davinci_mdiobb_read': >> drivers/net/ethernet/ti/davinci_mdio.c:236:15: error: implicit declaration of function 'mdiobb_read'; did you mean 'mdiobus_read'? [-Werror=implicit-function-declaration] 236 | ret = mdiobb_read(bus, phy, reg); | ^~~~~~~~~~~ | mdiobus_read drivers/net/ethernet/ti/davinci_mdio.c: In function 'davinci_mdiobb_write': >> drivers/net/ethernet/ti/davinci_mdio.c:253:15: error: implicit declaration of function 'mdiobb_write'; did you mean 'mdiobus_write'? [-Werror=implicit-function-declaration] 253 | ret = mdiobb_write(bus, phy, reg, val); | ^~~~~~~~~~~~ | mdiobus_write cc1: some warnings being treated as errors vim +236 drivers/net/ethernet/ti/davinci_mdio.c d04807b80691c6 Ravi Gunasekaran 2022-08-17 227 d04807b80691c6 Ravi Gunasekaran 2022-08-17 228 static int davinci_mdiobb_read(struct mii_bus *bus, int phy, int reg) d04807b80691c6 Ravi Gunasekaran 2022-08-17 229 { d04807b80691c6 Ravi Gunasekaran 2022-08-17 230 int ret; d04807b80691c6 Ravi Gunasekaran 2022-08-17 231 d04807b80691c6 Ravi Gunasekaran 2022-08-17 232 ret = pm_runtime_resume_and_get(bus->parent); d04807b80691c6 Ravi Gunasekaran 2022-08-17 233 if (ret < 0) d04807b80691c6 Ravi Gunasekaran 2022-08-17 234 return ret; d04807b80691c6 Ravi Gunasekaran 2022-08-17 235 d04807b80691c6 Ravi Gunasekaran 2022-08-17 @236 ret = mdiobb_read(bus, phy, reg); d04807b80691c6 Ravi Gunasekaran 2022-08-17 237 d04807b80691c6 Ravi Gunasekaran 2022-08-17 238 pm_runtime_mark_last_busy(bus->parent); d04807b80691c6 Ravi Gunasekaran 2022-08-17 239 pm_runtime_put_autosuspend(bus->parent); d04807b80691c6 Ravi Gunasekaran 2022-08-17 240 d04807b80691c6 Ravi Gunasekaran 2022-08-17 241 return ret; d04807b80691c6 Ravi Gunasekaran 2022-08-17 242 } d04807b80691c6 Ravi Gunasekaran 2022-08-17 243 d04807b80691c6 Ravi Gunasekaran 2022-08-17 244 static int davinci_mdiobb_write(struct mii_bus *bus, int phy, int reg, d04807b80691c6 Ravi Gunasekaran 2022-08-17 245 u16 val) d04807b80691c6 Ravi Gunasekaran 2022-08-17 246 { d04807b80691c6 Ravi Gunasekaran 2022-08-17 247 int ret; d04807b80691c6 Ravi Gunasekaran 2022-08-17 248 d04807b80691c6 Ravi Gunasekaran 2022-08-17 249 ret = pm_runtime_resume_and_get(bus->parent); d04807b80691c6 Ravi Gunasekaran 2022-08-17 250 if (ret < 0) d04807b80691c6 Ravi Gunasekaran 2022-08-17 251 return ret; d04807b80691c6 Ravi Gunasekaran 2022-08-17 252 d04807b80691c6 Ravi Gunasekaran 2022-08-17 @253 ret = mdiobb_write(bus, phy, reg, val); d04807b80691c6 Ravi Gunasekaran 2022-08-17 254 d04807b80691c6 Ravi Gunasekaran 2022-08-17 255 pm_runtime_mark_last_busy(bus->parent); d04807b80691c6 Ravi Gunasekaran 2022-08-17 256 pm_runtime_put_autosuspend(bus->parent); d04807b80691c6 Ravi Gunasekaran 2022-08-17 257 d04807b80691c6 Ravi Gunasekaran 2022-08-17 258 return ret; d04807b80691c6 Ravi Gunasekaran 2022-08-17 259 } d04807b80691c6 Ravi Gunasekaran 2022-08-17 260 -- 0-DAY CI Kernel Test Service https://01.org/lkp