Hi Simone, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on staging/staging-testing] [also build test WARNING on linus/master next-20220810] [cannot apply to v5.19] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Simone-Serra/Fixes-compilation-errors-after-checkpatch-warnings/20220809-223922 base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git 4e23eeebb2e57f5a28b36221aa776b5a1122dde5 config: i386-randconfig-a005 (https://download.01.org/0day-ci/archive/20220811/202208110717.w2MDXPcA-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-3) 11.3.0 reproduce (this is a W=1 build): # https://github.com/intel-lab-lkp/linux/commit/4178fe5425c24dfeabf5c4eb7fd13ada51d007c3 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Simone-Serra/Fixes-compilation-errors-after-checkpatch-warnings/20220809-223922 git checkout 4178fe5425c24dfeabf5c4eb7fd13ada51d007c3 # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/staging/rtl8723bs/ 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/staging/rtl8723bs/core/rtw_btcoex.c:12:6: warning: no previous prototype for 'rtw_btcoex_MediaStatusNotify' [-Wmissing-prototypes] 12 | void rtw_btcoex_MediaStatusNotify(struct adapter *padapter, u8 mediaStatus) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/rtw_btcoex_MediaStatusNotify +12 drivers/staging/rtl8723bs/core/rtw_btcoex.c 554c0a3abf216c Hans de Goede 2017-03-29 11 554c0a3abf216c Hans de Goede 2017-03-29 @12 void rtw_btcoex_MediaStatusNotify(struct adapter *padapter, u8 mediaStatus) 554c0a3abf216c Hans de Goede 2017-03-29 13 { 948d704855312c Shreeya Patel 2017-07-09 14 if ((mediaStatus == RT_MEDIA_CONNECT) 554c0a3abf216c Hans de Goede 2017-03-29 15 && (check_fwstate(&padapter->mlmepriv, WIFI_AP_STATE) == true)) { 554c0a3abf216c Hans de Goede 2017-03-29 16 rtw_hal_set_hwreg(padapter, HW_VAR_DL_RSVD_PAGE, NULL); 554c0a3abf216c Hans de Goede 2017-03-29 17 } 554c0a3abf216c Hans de Goede 2017-03-29 18 554c0a3abf216c Hans de Goede 2017-03-29 19 hal_btcoex_MediaStatusNotify(padapter, mediaStatus); 554c0a3abf216c Hans de Goede 2017-03-29 20 } 554c0a3abf216c Hans de Goede 2017-03-29 21 -- 0-DAY CI Kernel Test Service https://01.org/lkp