tree: https://git.kernel.org/pub/scm/linux/kernel/git/kbingham/rcar.git vsp1/v3u head: 4b88e2d75a21f477bd1aaf9eec8c567c54ffe43d commit: 1f4e9a15a76d4eb298a2771b7ca0e94990098923 [26/41] rcar-fcp: Add FCPVD reset sequence for VSPD config: mips-allyesconfig (attached as .config) compiler: mips-linux-gcc (GCC) 9.3.0 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://git.kernel.org/pub/scm/linux/kernel/git/kbingham/rcar.git/commit/... git remote add rcar https://git.kernel.org/pub/scm/linux/kernel/git/kbingham/rcar.git git fetch --no-tags rcar vsp1/v3u git checkout 1f4e9a15a76d4eb298a2771b7ca0e94990098923 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=mips If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): drivers/media/platform/rcar-fcp.c:55: warning: Function parameter or member 'fcp' not described in 'fcp_write' drivers/media/platform/rcar-fcp.c:55: warning: Function parameter or member 'value' not described in 'fcp_write' drivers/media/platform/rcar-fcp.c:55: warning: Function parameter or member 'offset' not described in 'fcp_write' vim +55 drivers/media/platform/rcar-fcp.c 39 40 /* ----------------------------------------------------------------------------- 41 * Public API 42 */ 43 44 /** 45 * rcar_fcp_get - Find and acquire a reference to an FCP instance 46 * @np: Device node of the FCP instance 47 * 48 * Search the list of registered FCP instances for the instance corresponding to 49 * the given device node. 50 * 51 * Return a pointer to the FCP instance, or an ERR_PTR if the instance can't be 52 * found. 53 */ 54 static void fcp_write(struct rcar_fcp_device *fcp, u32 value, u32 offset) 56 iowrite32(value, fcp->base + offset); 57 } 58 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org