Hi Kavyasree, Thank you for the patch! Yet something to improve: [auto build test ERROR on lee-mfd/for-mfd-next] [also build test ERROR on robh/for-next] [cannot apply to soc/for-next linus/master v5.18-rc6 next-20220509] [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] url: https://github.com/intel-lab-lkp/linux/commits/Kavyasree-Kotagiri/Add-support-for-lan966-flexcom-multiplexer/20220509-171104 base: https://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd.git for-mfd-next config: arm-at91_dt_defconfig (https://download.01.org/0day-ci/archive/20220510/202205100948.56scrQeg-lkp@xxxxxxxxx/config) compiler: arm-linux-gnueabi-gcc (GCC) 11.3.0 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/6b77ec16441906d1aa067b60cf97807111abdd72 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Kavyasree-Kotagiri/Add-support-for-lan966-flexcom-multiplexer/20220509-171104 git checkout 6b77ec16441906d1aa067b60cf97807111abdd72 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): arm-linux-gnueabi-ld: drivers/mfd/atmel-flexcom.o: in function `atmel_flexcom_probe': atmel-flexcom.c:(.text+0x160): undefined reference to `devm_mux_control_get' >> arm-linux-gnueabi-ld: atmel-flexcom.c:(.text+0x1ec): undefined reference to `mux_control_select_delay' >> arm-linux-gnueabi-ld: atmel-flexcom.c:(.text+0x1fc): undefined reference to `mux_control_deselect' -- 0-DAY CI Kernel Test Service https://01.org/lkp
