Hi Paul, kernel test robot noticed the following build warnings: [auto build test WARNING on clk/clk-next] [also build test WARNING on linus/master v6.13-rc5 next-20241220] [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/Paul-Handrigan/dt-binding-clock-cs2600-Add-support-for-the-CS2600/20241231-061424 base: https://git.kernel.org/pub/scm/linux/kernel/git/clk/linux.git clk-next patch link: https://lore.kernel.org/r/20241230221246.3927158-3-paulha%40opensource.cirrus.com patch subject: [PATCH v4 2/2] clk: cs2600: Add Fractional-N clock driver config: um-randconfig-r061-20250101 (https://download.01.org/0day-ci/archive/20250101/202501011656.Td8LworZ-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 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/202501011656.Td8LworZ-lkp@xxxxxxxxx/ cocci warnings: (new ones prefixed by >>) >> drivers/clk/clk-cs2600.c:300:1-7: WARNING: do_div() does a 64-by-32 division, please consider using div64_ul instead. drivers/clk/clk-cs2600.c:272:1-7: WARNING: do_div() does a 64-by-32 division, please consider using div64_ul instead. vim +300 drivers/clk/clk-cs2600.c 277 278 static int cs2600_set_multi_ratio(struct cs2600 *cs2600, unsigned long rate, 279 unsigned long parent_rate, 280 unsigned int *ratio) 281 { 282 struct regmap *regmap = cs2600->regmap; 283 u64 product = (u64)rate; 284 285 if ((rate / parent_rate) > CS2600_PLL_MULTIPLY_MAX) { 286 dev_err(cs2600->dev, "Ratio is too large %lu\n", 287 rate / parent_rate); 288 return -EINVAL; 289 } 290 291 if ((rate / parent_rate) > CS2600_HI_RES_MAX) { 292 regmap_clear_bits(regmap, CS2600_PLL_CFG3, CS2600_RATIO_CFG); 293 product <<= CS2600_20_12_SHIFT; 294 295 } else { 296 regmap_set_bits(regmap, CS2600_PLL_CFG3, CS2600_RATIO_CFG); 297 product <<= CS2600_12_20_SHIFT; 298 } 299 > 300 do_div(product, parent_rate); 301 *ratio = product; 302 303 return 0; 304 } 305 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
