Hi Jean-Michel, kernel test robot noticed the following build warnings: [auto build test WARNING on afcd48134c58d6af45fb3fdb648f1260b20f2326] url: https://github.com/intel-lab-lkp/linux/commits/Jean-Michel-Hautbois/arch-m68k-Add-definitions-for-flash-NFC-support/20240628-190232 base: afcd48134c58d6af45fb3fdb648f1260b20f2326 patch link: https://lore.kernel.org/r/20240627-upstream-nfc-mcf5441x-v2-2-312929d09ee5%40yoseli.org patch subject: [PATCH v2 2/2] mtd: nand: Add support for M5441x NFC config: x86_64-buildonly-randconfig-004-20240701 compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1) reproduce (this is a W=1 build): 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 | Closes: https://lore.kernel.org/oe-kbuild-all/202407020122.HVWEmotz-lkp@intel.com/ All warnings (new ones prefixed by >>): drivers/mtd/nand/raw/vf610_nfc.c:889:18: warning: cast to smaller integer type 'enum vf610_nfc_variant' from 'const void *' [-Wvoid-pointer-to-enum-cast] 889 | nfc->variant = (enum vf610_nfc_variant)data; | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/mtd/nand/raw/vf610_nfc.c:718:34: warning: unused variable 'vf610_nfc_dt_ids' [-Wunused-const-variable] 718 | static const struct of_device_id vf610_nfc_dt_ids[] = { | ^~~~~~~~~~~~~~~~ 2 warnings generated. vim +/vf610_nfc_dt_ids +718 drivers/mtd/nand/raw/vf610_nfc.c 049f42509973b86 drivers/mtd/nand/vf610_nfc.c Stefan Agner 2015-09-02 717 456930d80a2da12 drivers/mtd/nand/vf610_nfc.c Stefan Agner 2015-09-02 @718 static const struct of_device_id vf610_nfc_dt_ids[] = { 456930d80a2da12 drivers/mtd/nand/vf610_nfc.c Stefan Agner 2015-09-02 719 { .compatible = "fsl,vf610-nfc", .data = (void *)NFC_VFC610 }, 456930d80a2da12 drivers/mtd/nand/vf610_nfc.c Stefan Agner 2015-09-02 720 { /* sentinel */ } 456930d80a2da12 drivers/mtd/nand/vf610_nfc.c Stefan Agner 2015-09-02 721 }; 456930d80a2da12 drivers/mtd/nand/vf610_nfc.c Stefan Agner 2015-09-02 722 MODULE_DEVICE_TABLE(of, vf610_nfc_dt_ids); 456930d80a2da12 drivers/mtd/nand/vf610_nfc.c Stefan Agner 2015-09-02 723 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki