Hi Rex-BC, Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on v5.12-rc6] [also build test WARNING on next-20210406] [cannot apply to pwm/for-next] [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/Rex-BC-Chen/Convert-the-mtk_disp-driver-to-aotmic-API/20210406-180018 base: e49d033bddf5b565044e2abe4241353959bc9120 config: powerpc64-randconfig-r023-20210406 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project a46f59a747a7273cc439efaf3b4f98d8b63d2f20) 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 powerpc64 cross compiling tool for clang build # apt-get install binutils-powerpc64-linux-gnu # https://github.com/0day-ci/linux/commit/0a2486ac437e3b8d36a0bf8ce9648c22e42ffda4 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Rex-BC-Chen/Convert-the-mtk_disp-driver-to-aotmic-API/20210406-180018 git checkout 0a2486ac437e3b8d36a0bf8ce9648c22e42ffda4 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <l...@intel.com> All warnings (new ones prefixed by >>): ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:155:1: note: expanded from here __do_outl ^ arch/powerpc/include/asm/io.h:537:62: note: expanded from macro '__do_outl' #define __do_outl(val, port) writel(val,(PCI_IO_ADDR)_IO_BASE+port); ~~~~~~~~~~~~~~~~~~~~~^ In file included from drivers/pwm/pwm-mtk-disp.c:10: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:619: arch/powerpc/include/asm/io-defs.h:43:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(insb, (unsigned long p, void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:169:1: note: expanded from here __do_insb ^ arch/powerpc/include/asm/io.h:556:56: note: expanded from macro '__do_insb' #define __do_insb(p, b, n) readsb((PCI_IO_ADDR)_IO_BASE+(p), (b), (n)) ~~~~~~~~~~~~~~~~~~~~~^ In file included from drivers/pwm/pwm-mtk-disp.c:10: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:619: arch/powerpc/include/asm/io-defs.h:45:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(insw, (unsigned long p, void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:171:1: note: expanded from here __do_insw ^ arch/powerpc/include/asm/io.h:557:56: note: expanded from macro '__do_insw' #define __do_insw(p, b, n) readsw((PCI_IO_ADDR)_IO_BASE+(p), (b), (n)) ~~~~~~~~~~~~~~~~~~~~~^ In file included from drivers/pwm/pwm-mtk-disp.c:10: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:619: arch/powerpc/include/asm/io-defs.h:47:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(insl, (unsigned long p, void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:173:1: note: expanded from here __do_insl ^ arch/powerpc/include/asm/io.h:558:56: note: expanded from macro '__do_insl' #define __do_insl(p, b, n) readsl((PCI_IO_ADDR)_IO_BASE+(p), (b), (n)) ~~~~~~~~~~~~~~~~~~~~~^ In file included from drivers/pwm/pwm-mtk-disp.c:10: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:619: arch/powerpc/include/asm/io-defs.h:49:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(outsb, (unsigned long p, const void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:175:1: note: expanded from here __do_outsb ^ arch/powerpc/include/asm/io.h:559:58: note: expanded from macro '__do_outsb' #define __do_outsb(p, b, n) writesb((PCI_IO_ADDR)_IO_BASE+(p),(b),(n)) ~~~~~~~~~~~~~~~~~~~~~^ In file included from drivers/pwm/pwm-mtk-disp.c:10: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:619: arch/powerpc/include/asm/io-defs.h:51:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(outsw, (unsigned long p, const void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:177:1: note: expanded from here __do_outsw ^ arch/powerpc/include/asm/io.h:560:58: note: expanded from macro '__do_outsw' #define __do_outsw(p, b, n) writesw((PCI_IO_ADDR)_IO_BASE+(p),(b),(n)) ~~~~~~~~~~~~~~~~~~~~~^ In file included from drivers/pwm/pwm-mtk-disp.c:10: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:619: arch/powerpc/include/asm/io-defs.h:53:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(outsl, (unsigned long p, const void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:179:1: note: expanded from here __do_outsl ^ arch/powerpc/include/asm/io.h:561:58: note: expanded from macro '__do_outsl' #define __do_outsl(p, b, n) writesl((PCI_IO_ADDR)_IO_BASE+(p),(b),(n)) ~~~~~~~~~~~~~~~~~~~~~^ >> drivers/pwm/pwm-mtk-disp.c:109:4: warning: format specifies type 'int' but >> the argument has type 'u64' (aka 'unsigned long long') [-Wformat] rate); ^~~~ include/linux/dev_printk.h:112:32: note: expanded from macro 'dev_err' _dev_err(dev, dev_fmt(fmt), ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ 13 warnings generated. vim +109 drivers/pwm/pwm-mtk-disp.c 70 71 static int mtk_disp_pwm_enable(struct pwm_chip *chip, 72 const struct pwm_state *state) 73 { 74 struct mtk_disp_pwm *mdp = to_mtk_disp_pwm(chip); 75 u32 clk_div, period, high_width, value, polarity; 76 u64 div, rate; 77 int err; 78 79 /* 80 * Find period, high_width and clk_div to suit duty_ns and period_ns. 81 * Calculate proper div value to keep period value in the bound. 82 * 83 * period_ns = 10^9 * (clk_div + 1) * (period + 1) / PWM_CLK_RATE 84 * duty_ns = 10^9 * (clk_div + 1) * high_width / PWM_CLK_RATE 85 * 86 * period = (PWM_CLK_RATE * period_ns) / (10^9 * (clk_div + 1)) - 1 87 * high_width = (PWM_CLK_RATE * duty_ns) / (10^9 * (clk_div + 1)) 88 */ 89 if (!mdp->enabled) { 90 err = clk_prepare_enable(mdp->clk_main); 91 if (err < 0) { 92 dev_err(chip->dev, "Can't enable mdp->clk_main: %d\n", 93 err); 94 return err; 95 } 96 err = clk_prepare_enable(mdp->clk_mm); 97 if (err < 0) { 98 dev_err(chip->dev, "Can't enable mdp->clk_mm: %d\n", 99 err); 100 clk_disable_unprepare(mdp->clk_main); 101 return err; 102 } 103 } 104 rate = clk_get_rate(mdp->clk_main); 105 clk_div = div_u64(rate * state->period, NSEC_PER_SEC) >> 106 PWM_PERIOD_BIT_WIDTH; 107 if (clk_div > PWM_CLKDIV_MAX) { 108 dev_err(chip->dev, "clock rate is too high: rate = %d Hz\n", > 109 rate); 110 clk_disable_unprepare(mdp->clk_mm); 111 clk_disable_unprepare(mdp->clk_main); 112 return -EINVAL; 113 } 114 div = NSEC_PER_SEC * (clk_div + 1); 115 period = div64_u64(rate * state->period, div); 116 if (period > 0) 117 period--; 118 119 high_width = div64_u64(rate * state->duty_cycle, div); 120 value = period | (high_width << PWM_HIGH_WIDTH_SHIFT); 121 polarity = 0; 122 if (state->polarity == PWM_POLARITY_INVERSED) 123 polarity = PWM_POLARITY; 124 125 mtk_disp_pwm_update_bits(mdp, mdp->data->con0, 126 PWM_CLKDIV_MASK, 127 clk_div << PWM_CLKDIV_SHIFT); 128 mtk_disp_pwm_update_bits(mdp, mdp->data->con0, 129 PWM_POLARITY, polarity); 130 mtk_disp_pwm_update_bits(mdp, mdp->data->con1, 131 PWM_PERIOD_MASK | PWM_HIGH_WIDTH_MASK, 132 value); 133 134 if (mdp->data->has_commit) { 135 mtk_disp_pwm_update_bits(mdp, mdp->data->commit, 136 mdp->data->commit_mask, 137 mdp->data->commit_mask); 138 mtk_disp_pwm_update_bits(mdp, mdp->data->commit, 139 mdp->data->commit_mask, 140 0x0); 141 } else { 142 mtk_disp_pwm_update_bits(mdp, mdp->data->bls_debug, 143 mdp->data->bls_debug_mask, 144 mdp->data->bls_debug_mask); 145 mtk_disp_pwm_update_bits(mdp, mdp->data->con0, 146 mdp->data->con0_sel, 147 mdp->data->con0_sel); 148 } 149 150 mtk_disp_pwm_update_bits(mdp, DISP_PWM_EN, mdp->data->enable_mask, 151 mdp->data->enable_mask); 152 mdp->enabled = true; 153 return 0; 154 } 155 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
.config.gz
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