Hi Manjunatha, I love your patch! Perhaps something to improve: [auto build test WARNING on char-misc/char-misc-testing] [also build test WARNING on robh/for-next linus/master v5.18 next-20220527] [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/Manjunatha-Venkatesh/dt-bindings-uwb-Device-tree-information-for-Nxp-SR1XX-SOCs/20220528-034415 base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git 90de6805267f8c79cd2b1a36805071e257c39b5c config: sh-allmodconfig (https://download.01.org/0day-ci/archive/20220528/202205280934.M6HHdGSK-lkp@xxxxxxxxx/config) compiler: sh4-linux-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/948442a0588504d3fecae99073e785e5af6346bc git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Manjunatha-Venkatesh/dt-bindings-uwb-Device-tree-information-for-Nxp-SR1XX-SOCs/20220528-034415 git checkout 948442a0588504d3fecae99073e785e5af6346bc # 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=sh SHELL=/bin/bash drivers/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/misc/nxp-sr1xx.c:175:6: warning: no previous prototype for 'sr1xx_wait_for_irq_gpio_low' [-Wmissing-prototypes] 175 | void sr1xx_wait_for_irq_gpio_low(struct sr1xx_dev *sr1xx_dev) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/misc/nxp-sr1xx.c:770:5: warning: no previous prototype for 'sr1xx_dev_suspend' [-Wmissing-prototypes] 770 | int sr1xx_dev_suspend(struct device *dev) | ^~~~~~~~~~~~~~~~~ >> drivers/misc/nxp-sr1xx.c:786:5: warning: no previous prototype for 'sr1xx_dev_resume' [-Wmissing-prototypes] 786 | int sr1xx_dev_resume(struct device *dev) | ^~~~~~~~~~~~~~~~ vim +/sr1xx_wait_for_irq_gpio_low +175 drivers/misc/nxp-sr1xx.c 168 169 /** 170 * sr1xx_wait_for_irq_gpio_low 171 * 172 * Function to wait till irq gpio goes low state 173 * 174 */ > 175 void sr1xx_wait_for_irq_gpio_low(struct sr1xx_dev *sr1xx_dev) 176 { 177 int retry_count = 0; 178 179 do { 180 udelay(10); 181 retry_count++; 182 if (retry_count == MAX_RETRY_COUNT_FOR_HANDSHAKE) { 183 dev_info(&sr1xx_dev->spi->dev, 184 "Slave not released the IRQ even after 10ms"); 185 break; 186 } 187 } while (gpio_get_value(sr1xx_dev->irq_gpio)); 188 } 189 -- 0-DAY CI Kernel Test Service https://01.org/lkp