Hi Dzmitry, kernel test robot noticed the following build warnings: [auto build test WARNING on 92fc9636d1471b7f68bfee70c776f7f77e747b97] url: https://github.com/intel-lab-lkp/linux/commits/Dzmitry-Sankouski/clk-qcom-clk-rcg2-document-calc_rate-function/20240926-184051 base: 92fc9636d1471b7f68bfee70c776f7f77e747b97 patch link: https://lore.kernel.org/r/20240617-starqltechn_integration_upstream-v5-2-761795ea5084%40gmail.com patch subject: [PATCH v5 2/2] gcc-sdm845: Add general purpose clock ops config: i386-buildonly-randconfig-006-20240929 (https://download.01.org/0day-ci/archive/20240929/202409290702.jlF0XWJZ-lkp@xxxxxxxxx/config) compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240929/202409290702.jlF0XWJZ-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/202409290702.jlF0XWJZ-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/clk/qcom/clk-rcg2.c:431:13: warning: variable 'count' set but not used [-Wunused-but-set-variable] 431 | int i = 2, count = 0; | ^ 1 warning generated. vim +/count +431 drivers/clk/qcom/clk-rcg2.c 427 428 static void clk_rcg2_calc_mnd(u64 parent_rate, u64 rate, struct freq_tbl *f, 429 unsigned int mnd_max, unsigned int pre_div_max) 430 { > 431 int i = 2, count = 0; 432 unsigned int pre_div = 1; 433 unsigned long rates_gcd, scaled_parent_rate; 434 u16 m, n = 1, n_candidate = 1, n_max; 435 436 rates_gcd = gcd(parent_rate, rate); 437 m = div64_u64(rate, rates_gcd); 438 scaled_parent_rate = div64_u64(parent_rate, rates_gcd); 439 while (scaled_parent_rate > (mnd_max + m) * pre_div_max) { 440 // we're exceeding divisor's range, trying lower scale. 441 if (m > 1) { 442 m--; 443 scaled_parent_rate = mult_frac(scaled_parent_rate, m, (m + 1)); 444 } else { 445 f->n = mnd_max + m; 446 f->pre_div = pre_div_max; 447 f->m = m; 448 } 449 } 450 451 n_max = m + mnd_max; 452 453 while (scaled_parent_rate > 1) { 454 while (scaled_parent_rate % i == 0) { 455 n_candidate *= i; 456 if (n_candidate < n_max) 457 n = n_candidate; 458 else if (pre_div * i < pre_div_max) 459 pre_div *= i; 460 else 461 clk_rcg2_split_div(i, &pre_div, &n, pre_div_max); 462 463 scaled_parent_rate /= i; 464 } 465 i++; 466 count++; 467 } 468 469 f->m = m; 470 f->n = n; 471 f->pre_div = pre_div > 1 ? pre_div : 0; 472 } 473 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
