Hi Jonathan, kernel test robot noticed the following build warnings: [auto build test WARNING on 4cece764965020c22cff7665b18a012006359095] url: https://github.com/intel-lab-lkp/linux/commits/Jonathan-Neusch-fer/dt-bindings-clock-Add-Nuvoton-WPCM450-clock-reset-controller/20240708-073926 base: 4cece764965020c22cff7665b18a012006359095 patch link: https://lore.kernel.org/r/20240708-wpcm-clk-v12-4-1afac539c37d%40gmx.net patch subject: [PATCH RESEND v12 4/6] clk: wpcm450: Add Nuvoton WPCM450 clock/reset controller driver config: arm-randconfig-r064-20240715 (https://download.01.org/0day-ci/archive/20240716/202407160235.JYThNv91-lkp@xxxxxxxxx/config) compiler: clang version 15.0.7 (https://github.com/llvm/llvm-project 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a) 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/202407160235.JYThNv91-lkp@xxxxxxxxx/ cocci warnings: (new ones prefixed by >>) >> drivers/clk/nuvoton/clk-wpcm450.c:55:1-7: WARNING: do_div() does a 64-by-32 division, please consider using div64_ul instead. vim +55 drivers/clk/nuvoton/clk-wpcm450.c 36 37 static unsigned long wpcm450_clk_pll_recalc_rate(struct clk_hw *hw, 38 unsigned long parent_rate) 39 { 40 struct wpcm450_clk_pll *pll = to_wpcm450_clk_pll(hw); 41 unsigned long fbdv, indv, otdv; 42 u64 rate; 43 u32 pllcon; 44 45 if (parent_rate == 0) 46 return 0; 47 48 pllcon = readl_relaxed(pll->pllcon); 49 50 indv = FIELD_GET(PLLCON_INDV, pllcon) + 1; 51 fbdv = FIELD_GET(PLLCON_FBDV, pllcon) + 1; 52 otdv = FIELD_GET(PLLCON_OTDV, pllcon) + 1; 53 54 rate = (u64)parent_rate * fbdv; > 55 do_div(rate, indv * otdv); 56 57 return rate; 58 } 59 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
