Hi Dongjiu, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on clk/clk-next] [also build test WARNING on v5.10-rc3 next-20201109] [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] url: https://github.com/0day-ci/linux/commits/Dongjiu-Geng/clk-hisilicon-Add-clock-driver-for-hi3559A-SoC/20201109-220823 base: https://git.kernel.org/pub/scm/linux/kernel/git/clk/linux.git clk-next config: arm-randconfig-r001-20201109 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 09ec07827b1128504457a93dee80b2ceee1af600) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi # https://github.com/0day-ci/linux/commit/4c47c8e369dc38c57f55055c51d0c22565d472e6 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Dongjiu-Geng/clk-hisilicon-Add-clock-driver-for-hi3559A-SoC/20201109-220823 git checkout 4c47c8e369dc38c57f55055c51d0c22565d472e6 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/clk/hisilicon/clk-hi3559a.c:467:6: warning: no previous prototype for function 'hisi_clk_register_pll' [-Wmissing-prototypes] void hisi_clk_register_pll(struct hi3559av100_pll_clock *clks, ^ drivers/clk/hisilicon/clk-hi3559a.c:467:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void hisi_clk_register_pll(struct hi3559av100_pll_clock *clks, ^ static 1 warning generated. vim +/hisi_clk_register_pll +467 drivers/clk/hisilicon/clk-hi3559a.c 466 > 467 void hisi_clk_register_pll(struct hi3559av100_pll_clock *clks, 468 int nums, struct hisi_clock_data *data) 469 { 470 void __iomem *base = data->base; 471 int i; 472 473 for (i = 0; i < nums; i++) { 474 struct hi3559av100_clk_pll *p_clk = NULL; 475 struct clk *clk = NULL; 476 struct clk_init_data init; 477 478 p_clk = kzalloc(sizeof(*p_clk), GFP_KERNEL); 479 if (!p_clk) 480 return; 481 482 init.name = clks[i].name; 483 init.flags = 0; 484 init.parent_names = 485 (clks[i].parent_name ? &clks[i].parent_name : NULL); 486 init.num_parents = (clks[i].parent_name ? 1 : 0); 487 init.ops = &clk_pll_ops; 488 489 p_clk->ctrl_reg1 = base + clks[i].ctrl_reg1; 490 p_clk->frac_shift = clks[i].frac_shift; 491 p_clk->frac_width = clks[i].frac_width; 492 p_clk->postdiv1_shift = clks[i].postdiv1_shift; 493 p_clk->postdiv1_width = clks[i].postdiv1_width; 494 p_clk->postdiv2_shift = clks[i].postdiv2_shift; 495 p_clk->postdiv2_width = clks[i].postdiv2_width; 496 497 p_clk->ctrl_reg2 = base + clks[i].ctrl_reg2; 498 p_clk->fbdiv_shift = clks[i].fbdiv_shift; 499 p_clk->fbdiv_width = clks[i].fbdiv_width; 500 p_clk->refdiv_shift = clks[i].refdiv_shift; 501 p_clk->refdiv_width = clks[i].refdiv_width; 502 p_clk->hw.init = &init; 503 504 clk = clk_register(NULL, &p_clk->hw); 505 if (IS_ERR(clk)) { 506 kfree(p_clk); 507 pr_err("%s: failed to register clock %s\n", 508 __func__, clks[i].name); 509 continue; 510 } 511 512 data->clk_data.clks[clks[i].id] = clk; 513 } 514 } 515 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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