Hi Chen, kernel test robot noticed the following build warnings: [auto build test WARNING on b85ea95d086471afb4ad062012a4d73cd328fa86] url: https://github.com/intel-lab-lkp/linux/commits/Chen-Wang/dt-bindings-clock-sophgo-Add-SG2042-clock-definitions/20231113-212401 base: b85ea95d086471afb4ad062012a4d73cd328fa86 patch link: https://lore.kernel.org/r/1000e8d546514973364478271564356352a46ed5.1699879741.git.unicorn_wang%40outlook.com patch subject: [PATCH 4/5] clk: sophgo: Add SG2042 clock generator driver config: riscv-rv32_defconfig (https://download.01.org/0day-ci/archive/20231115/202311152042.tMDnRsFe-lkp@xxxxxxxxx/config) compiler: riscv32-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231115/202311152042.tMDnRsFe-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/202311152042.tMDnRsFe-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): drivers/clk/sophgo/clk-sophgo-sg2042.c: In function '__sg2042_get_pll_ctl_setting': >> drivers/clk/sophgo/clk-sophgo-sg2042.c:25:28: warning: integer overflow in expression of type 'long int' results in '-1094967296' [-Woverflow] 25 | #define PLL_FREQ_MAX (3200 * MHZ) | ^ drivers/clk/sophgo/clk-sophgo-sg2042.c:217:65: note: in expansion of macro 'PLL_FREQ_MAX' 217 | if (foutvco < PLL_FREQ_MIN || foutvco > PLL_FREQ_MAX | ^~~~~~~~~~~~ vim +25 drivers/clk/sophgo/clk-sophgo-sg2042.c 23 24 #define PLL_FREQ_MIN (16 * MHZ) > 25 #define PLL_FREQ_MAX (3200 * MHZ) 26 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki