Hi Andrea, kernel test robot noticed the following build warnings: [auto build test WARNING on clk/clk-next] [also build test WARNING on char-misc/char-misc-testing char-misc/char-misc-next char-misc/char-misc-linus robh/for-next linus/master v6.12-rc5] [cannot apply to next-20241031] [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/Andrea-della-Porta/dt-bindings-clock-Add-RaspberryPi-RP1-clock-bindings/20241028-221122 base: https://git.kernel.org/pub/scm/linux/kernel/git/clk/linux.git clk-next patch link: https://lore.kernel.org/r/c20e3d6d87c71691b149cdeeafc94009953346b2.1730123575.git.andrea.porta%40suse.com patch subject: [PATCH v3 07/12] clk: rp1: Add support for clocks provided by RP1 config: s390-allmodconfig (https://download.01.org/0day-ci/archive/20241031/202410311923.jL6Guqrr-lkp@xxxxxxxxx/config) compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 639a7ac648f1e50ccd2556e17d401c04f9cce625) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241031/202410311923.jL6Guqrr-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/202410311923.jL6Guqrr-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from drivers/clk/clk-rp1.c:9: In file included from include/linux/regmap.h:20: In file included from include/linux/iopoll.h:14: In file included from include/linux/io.h:14: In file included from arch/s390/include/asm/io.h:93: include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 548 | val = __raw_readb(PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 561 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); | ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu' 37 | #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x)) | ^ include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16' 102 | #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x)) | ^ In file included from drivers/clk/clk-rp1.c:9: In file included from include/linux/regmap.h:20: In file included from include/linux/iopoll.h:14: In file included from include/linux/io.h:14: In file included from arch/s390/include/asm/io.h:93: include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 574 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); | ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu' 35 | #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x)) | ^ include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32' 115 | #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x)) | ^ In file included from drivers/clk/clk-rp1.c:9: In file included from include/linux/regmap.h:20: In file included from include/linux/iopoll.h:14: In file included from include/linux/io.h:14: In file included from arch/s390/include/asm/io.h:93: include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 585 | __raw_writeb(value, PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 595 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 605 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ include/asm-generic/io.h:693:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 693 | readsb(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:701:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 701 | readsw(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:709:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 709 | readsl(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:718:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 718 | writesb(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:727:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 727 | writesw(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ include/asm-generic/io.h:736:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 736 | writesl(PCI_IOBASE + addr, buffer, count); | ~~~~~~~~~~ ^ In file included from drivers/clk/clk-rp1.c:11: In file included from include/linux/module.h:19: In file included from include/linux/elf.h:6: In file included from arch/s390/include/asm/elf.h:181: In file included from arch/s390/include/asm/mmu_context.h:11: In file included from arch/s390/include/asm/pgalloc.h:18: In file included from include/linux/mm.h:2213: include/linux/vmstat.h:504:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] 504 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 505 | item]; | ~~~~ include/linux/vmstat.h:511:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] 511 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 512 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion] 518 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~ include/linux/vmstat.h:524:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion] 524 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~ ^ 525 | NR_VM_NUMA_EVENT_ITEMS + | ~~~~~~~~~~~~~~~~~~~~~~ >> drivers/clk/clk-rp1.c:621:2: warning: result of comparison of constant 18446744073709551615 with expression of type 'typeof (_Generic((mask), char: (unsigned char)0, unsigned char: (unsigned char)0, signed char: (unsigned char)0, unsigned short: (unsigned short)0, short: (unsigned short)0, unsigned int: (unsigned int)0, int: (unsigned int)0, unsigned long: (unsigned long)0, long: (unsigned long)0, unsigned long long: (unsigned long long)0, long long: (unsigned long long)0, default: (mask)))' (aka 'unsigned int') is always false [-Wtautological-constant-out-of-range-compare] 621 | FIELD_SET(prim, PLL_PRIM_DIV1_MASK, prim_div1); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/clk/clk-rp1.c:399:12: note: expanded from macro 'FIELD_SET' 399 | (_reg) |= FIELD_PREP(mask, (_val)); \ | ^~~~~~~~~~~~~~~~~~~~~~~~ include/linux/bitfield.h:115:3: note: expanded from macro 'FIELD_PREP' 115 | __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: "); \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/bitfield.h:72:53: note: expanded from macro '__BF_FIELD_CHECK' 72 | BUILD_BUG_ON_MSG(__bf_cast_unsigned(_mask, _mask) > \ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~ 73 | __bf_cast_unsigned(_reg, ~0ull), \ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 74 | _pfx "type of reg too small for mask"); \ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) include/linux/compiler_types.h:517:22: note: expanded from macro 'compiletime_assert' 517 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler_types.h:505:23: note: expanded from macro '_compiletime_assert' 505 | __compiletime_assert(condition, msg, prefix, suffix) | ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler_types.h:497:9: note: expanded from macro '__compiletime_assert' 497 | if (!(condition)) \ | ^~~~~~~~~ drivers/clk/clk-rp1.c:622:2: warning: result of comparison of constant 18446744073709551615 with expression of type 'typeof (_Generic((mask), char: (unsigned char)0, unsigned char: (unsigned char)0, signed char: (unsigned char)0, unsigned short: (unsigned short)0, short: (unsigned short)0, unsigned int: (unsigned int)0, int: (unsigned int)0, unsigned long: (unsigned long)0, long: (unsigned long)0, unsigned long long: (unsigned long long)0, long long: (unsigned long long)0, default: (mask)))' (aka 'unsigned int') is always false [-Wtautological-constant-out-of-range-compare] 622 | FIELD_SET(prim, PLL_PRIM_DIV2_MASK, prim_div2); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/clk/clk-rp1.c:399:12: note: expanded from macro 'FIELD_SET' 399 | (_reg) |= FIELD_PREP(mask, (_val)); \ | ^~~~~~~~~~~~~~~~~~~~~~~~ include/linux/bitfield.h:115:3: note: expanded from macro 'FIELD_PREP' 115 | __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: "); \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/bitfield.h:72:53: note: expanded from macro '__BF_FIELD_CHECK' 72 | BUILD_BUG_ON_MSG(__bf_cast_unsigned(_mask, _mask) > \ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~ 73 | __bf_cast_unsigned(_reg, ~0ull), \ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 74 | _pfx "type of reg too small for mask"); \ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) include/linux/compiler_types.h:517:22: note: expanded from macro 'compiletime_assert' 517 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler_types.h:505:23: note: expanded from macro '_compiletime_assert' 505 | __compiletime_assert(condition, msg, prefix, suffix) | ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler_types.h:497:9: note: expanded from macro '__compiletime_assert' 497 | if (!(condition)) \ | ^~~~~~~~~ drivers/clk/clk-rp1.c:767:2: warning: result of comparison of constant 18446744073709551615 with expression of type 'typeof (_Generic((mask), char: (unsigned char)0, unsigned char: (unsigned char)0, signed char: (unsigned char)0, unsigned short: (unsigned short)0, short: (unsigned short)0, unsigned int: (unsigned int)0, int: (unsigned int)0, unsigned long: (unsigned long)0, long: (unsigned long)0, unsigned long long: (unsigned long long)0, long long: (unsigned long long)0, default: (mask)))' (aka 'unsigned int') is always false [-Wtautological-constant-out-of-range-compare] 767 | FIELD_SET(sec, PLL_SEC_DIV_MASK, div); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/clk/clk-rp1.c:399:12: note: expanded from macro 'FIELD_SET' 399 | (_reg) |= FIELD_PREP(mask, (_val)); \ | ^~~~~~~~~~~~~~~~~~~~~~~~ include/linux/bitfield.h:115:3: note: expanded from macro 'FIELD_PREP' 115 | __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: "); \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/bitfield.h:72:53: note: expanded from macro '__BF_FIELD_CHECK' 72 | BUILD_BUG_ON_MSG(__bf_cast_unsigned(_mask, _mask) > \ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~ 73 | __bf_cast_unsigned(_reg, ~0ull), \ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 74 | _pfx "type of reg too small for mask"); \ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) include/linux/compiler_types.h:517:22: note: expanded from macro 'compiletime_assert' 517 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler_types.h:505:23: note: expanded from macro '_compiletime_assert' 505 | __compiletime_assert(condition, msg, prefix, suffix) | ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler_types.h:497:9: note: expanded from macro '__compiletime_assert' 497 | if (!(condition)) \ | ^~~~~~~~~ drivers/clk/clk-rp1.c:948:3: warning: result of comparison of constant 18446744073709551615 with expression of type 'typeof (_Generic((mask), char: (unsigned char)0, unsigned char: (unsigned char)0, signed char: (unsigned char)0, unsigned short: (unsigned short)0, short: (unsigned short)0, unsigned int: (unsigned int)0, int: (unsigned int)0, unsigned long: (unsigned long)0, long: (unsigned long)0, unsigned long long: (unsigned long long)0, long long: (unsigned long long)0, default: (mask)))' (aka 'unsigned int') is always false [-Wtautological-constant-out-of-range-compare] 948 | FIELD_SET(ctrl, CLK_CTRL_AUXSRC_MASK, index - data->num_std_parents); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/clk/clk-rp1.c:399:12: note: expanded from macro 'FIELD_SET' 399 | (_reg) |= FIELD_PREP(mask, (_val)); \ | ^~~~~~~~~~~~~~~~~~~~~~~~ include/linux/bitfield.h:115:3: note: expanded from macro 'FIELD_PREP' 115 | __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: "); \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/bitfield.h:72:53: note: expanded from macro '__BF_FIELD_CHECK' 72 | BUILD_BUG_ON_MSG(__bf_cast_unsigned(_mask, _mask) > \ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~ 73 | __bf_cast_unsigned(_reg, ~0ull), \ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 74 | _pfx "type of reg too small for mask"); \ | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) include/linux/compiler_types.h:517:22: note: expanded from macro 'compiletime_assert' 517 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler_types.h:505:23: note: expanded from macro '_compiletime_assert' 505 | __compiletime_assert(condition, msg, prefix, suffix) | ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for MODVERSIONS Depends on [n]: MODULES [=y] && !COMPILE_TEST [=y] Selected by [y]: - RANDSTRUCT_FULL [=y] && (CC_HAS_RANDSTRUCT [=y] || GCC_PLUGINS [=n]) && MODULES [=y] vim +621 drivers/clk/clk-rp1.c 607 608 static int rp1_pll_set_rate(struct clk_hw *hw, 609 unsigned long rate, unsigned long parent_rate) 610 { 611 struct rp1_clk_desc *pll = container_of(hw, struct rp1_clk_desc, hw); 612 struct rp1_clockman *clockman = pll->clockman; 613 const struct rp1_pll_data *data = pll->data; 614 615 u32 prim, prim_div1, prim_div2; 616 617 get_pll_prim_dividers(rate, parent_rate, &prim_div1, &prim_div2); 618 619 spin_lock(&clockman->regs_lock); 620 prim = clockman_read(clockman, data->ctrl_reg); > 621 FIELD_SET(prim, PLL_PRIM_DIV1_MASK, prim_div1); 622 FIELD_SET(prim, PLL_PRIM_DIV2_MASK, prim_div2); 623 clockman_write(clockman, data->ctrl_reg, prim); 624 spin_unlock(&clockman->regs_lock); 625 626 return 0; 627 } 628 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
