Hi Julian, kernel test robot noticed the following build warnings:
[auto build test WARNING on arnd-asm-generic/master] [also build test WARNING on soc/for-next akpm-mm/mm-nonmm-unstable arm64/for-next/core linus/master v6.11 next-20240924] [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/Julian-Vetter/Consolidate-__memcpy_-to-from-io-and-__memset_io-into-iomap_copy-c/20240924-202154 base: https://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic.git master patch link: https://lore.kernel.org/r/20240924121432.798655-2-jvetter%40kalrayinc.com patch subject: [PATCH v5 1/5] Consolidate __memcpy_{to,from}io and __memset_io into iomap_copy.c config: arm-mxs_defconfig (https://download.01.org/0day-ci/archive/20240925/[email protected]/config) compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 7773243d9916f98ba0ffce0c3a960e4aa9f03e81) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240925/[email protected]/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 <[email protected]> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/ All warnings (new ones prefixed by >>): lib/iomap_copy.c:89:19: error: call to undeclared function 'IS_ALIGNED'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 89 | while (count && !IS_ALIGNED((unsigned long)from, NATIVE_STORE_SIZE)) { | ^ lib/iomap_copy.c:121:19: error: call to undeclared function 'IS_ALIGNED'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 121 | while (count && !IS_ALIGNED((unsigned long)to, NATIVE_STORE_SIZE)) { | ^ lib/iomap_copy.c:161:19: error: call to undeclared function 'IS_ALIGNED'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 161 | while (count && !IS_ALIGNED((unsigned long)dst, NATIVE_STORE_SIZE)) { | ^ >> lib/iomap_copy.c:159:12: warning: shift count >= width of type >> [-Wshift-count-overflow] 159 | qc |= qc << 32; | ^ ~~ 1 warning and 3 errors generated. vim +159 lib/iomap_copy.c 84 85 86 #ifndef __memcpy_fromio 87 void __memcpy_fromio(void *to, const volatile void __iomem *from, size_t count) 88 { > 89 while (count && !IS_ALIGNED((unsigned long)from, NATIVE_STORE_SIZE)) { 90 *(u8 *)to = __raw_readb(from); 91 from++; 92 to++; 93 count--; 94 } 95 96 while (count >= NATIVE_STORE_SIZE) { 97 #ifdef CONFIG_64BIT 98 put_unaligned(__raw_readq(from), (uintptr_t *)to); 99 #else 100 put_unaligned(__raw_readl(from), (uintptr_t *)to); 101 #endif 102 103 from += NATIVE_STORE_SIZE; 104 to += NATIVE_STORE_SIZE; 105 count -= NATIVE_STORE_SIZE; 106 } 107 108 while (count) { 109 *(u8 *)to = __raw_readb(from); 110 from++; 111 to++; 112 count--; 113 } 114 } 115 EXPORT_SYMBOL(__memcpy_fromio); 116 #endif 117 118 #ifndef __memcpy_toio 119 void __memcpy_toio(volatile void __iomem *to, const void *from, size_t count) 120 { 121 while (count && !IS_ALIGNED((unsigned long)to, NATIVE_STORE_SIZE)) { 122 __raw_writeb(*(u8 *)from, to); 123 from++; 124 to++; 125 count--; 126 } 127 128 while (count >= NATIVE_STORE_SIZE) { 129 #ifdef CONFIG_64BIT 130 __raw_writeq(get_unaligned((uintptr_t *)from), to); 131 #else 132 __raw_writel(get_unaligned((uintptr_t *)from), to); 133 #endif 134 135 from += NATIVE_STORE_SIZE; 136 to += NATIVE_STORE_SIZE; 137 count -= NATIVE_STORE_SIZE; 138 } 139 140 while (count) { 141 __raw_writeb(*(u8 *)from, to); 142 from++; 143 to++; 144 count--; 145 } 146 } 147 EXPORT_SYMBOL(__memcpy_toio); 148 #endif 149 150 #ifndef __memset_io 151 void __memset_io(volatile void __iomem *dst, int c, size_t count) 152 { 153 uintptr_t qc = (u8)c; 154 155 qc |= qc << 8; 156 qc |= qc << 16; 157 158 if (IS_ENABLED(CONFIG_64BIT)) > 159 qc |= qc << 32; -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
