Hi Peter, I love your patch! Perhaps something to improve: [auto build test WARNING on tegra/for-next] [also build test WARNING on v4.18-rc3 next-20180703] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Aapo-Vienamo/clk-tegra-refactor-7-1-div-calculation/20180703-205606 base: https://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux.git for-next config: arm-allmodconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree GCC_VERSION=7.2.0 make.cross ARCH=arm All warnings (new ones prefixed by >>): In file included from arch/arm/include/asm/div64.h:127:0, from include/linux/kernel.h:174, from drivers/clk/tegra/div71.c:17: drivers/clk/tegra/div71.c: In function 'div71_get': include/asm-generic/div64.h:222:28: warning: comparison of distinct pointer types lacks a cast (void)(((typeof((n)) *)0) == ((uint64_t *)0)); \ ^ >> drivers/clk/tegra/div71.c:40:2: note: in expansion of macro 'do_div' do_div(divider_ux1, rate); ^~~~~~ vim +/do_div +40 drivers/clk/tegra/div71.c > 17 #include <linux/kernel.h> 18 19 #include "clk.h" 20 21 #define div_mask(w) ((1 << (w)) - 1) 22 23 int div71_get(unsigned long rate, unsigned parent_rate, u8 width, 24 u8 frac_width, u8 flags) 25 { 26 s64 divider_ux1 = parent_rate; 27 int mul; 28 29 if (!rate) 30 return 0; 31 32 mul = 1 << frac_width; 33 34 if (!(flags & TEGRA_DIVIDER_INT)) 35 divider_ux1 *= mul; 36 37 if (flags & TEGRA_DIVIDER_ROUND_UP) 38 divider_ux1 += rate - 1; 39 > 40 do_div(divider_ux1, rate); --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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