Hi Ayush, kernel test robot noticed the following build errors: [auto build test ERROR on tty/tty-testing] [also build test ERROR on tty/tty-next tty/tty-linus linus/master v6.5 next-20230906] [cannot apply to robh/for-next] [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/Ayush-Singh/dt-bindings-Add-beaglecc1352/20230903-022958 base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing patch link: https://lore.kernel.org/r/20230902182845.1840620-3-ayushdevel1325%40gmail.com patch subject: [PATCH v4 2/3] greybus: Add BeaglePlay Linux Driver config: microblaze-randconfig-r022-20230907 (https://download.01.org/0day-ci/archive/20230907/202309070423.35kLcJgy-lkp@xxxxxxxxx/config) compiler: microblaze-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230907/202309070423.35kLcJgy-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202309070423.35kLcJgy-lkp@xxxxxxxxx/ All error/warnings (new ones prefixed by >>): >> drivers/greybus/gb-beagleplay.c:490:1: warning: data definition has no type or storage class 490 | module_serdev_device_driver(gb_beagleplay_driver); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/greybus/gb-beagleplay.c:490:1: error: type defaults to 'int' in declaration of 'module_serdev_device_driver' [-Werror=implicit-int] >> drivers/greybus/gb-beagleplay.c:490:1: warning: parameter names (without types) in function declaration >> drivers/greybus/gb-beagleplay.c:481:36: warning: 'gb_beagleplay_driver' defined but not used [-Wunused-variable] 481 | static struct serdev_device_driver gb_beagleplay_driver = { | ^~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +490 drivers/greybus/gb-beagleplay.c 480 > 481 static struct serdev_device_driver gb_beagleplay_driver = { 482 .probe = gb_beagleplay_probe, 483 .remove = gb_beagleplay_remove, 484 .driver = { 485 .name = "gb_beagleplay", 486 .of_match_table = of_match_ptr(gb_beagleplay_of_match), 487 }, 488 }; 489 > 490 module_serdev_device_driver(gb_beagleplay_driver); 491 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki