Hi Shiji, kernel test robot noticed the following build warnings: [auto build test WARNING on soc/for-next] [also build test WARNING on linus/master v6.10-rc5 next-20240627] [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/Shiji-Yang/mips-kernel-fix-detect_memory_region-function/20240626-070033 base: https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git for-next patch link: https://lore.kernel.org/r/TYCP286MB089598ABD1E2F66003D71EB8BCD52%40TYCP286MB0895.JPNP286.PROD.OUTLOOK.COM patch subject: [PATCH V2] mips: kernel: fix detect_memory_region() function config: mips-randconfig-r113-20240628 (https://download.01.org/0day-ci/archive/20240628/202406282354.0hGuOKo0-lkp@xxxxxxxxx/config) compiler: clang version 15.0.7 (https://github.com/llvm/llvm-project 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a) reproduce: (https://download.01.org/0day-ci/archive/20240628/202406282354.0hGuOKo0-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/202406282354.0hGuOKo0-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) >> arch/mips/kernel/setup.c:104:53: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *mem @@ got void *dm @@ arch/mips/kernel/setup.c:104:53: sparse: expected void volatile [noderef] __iomem *mem arch/mips/kernel/setup.c:104:53: sparse: got void *dm >> arch/mips/kernel/setup.c:105:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *mem @@ got void *dm @@ arch/mips/kernel/setup.c:105:33: sparse: expected void const volatile [noderef] __iomem *mem arch/mips/kernel/setup.c:105:33: sparse: got void *dm >> arch/mips/kernel/setup.c:105:55: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *mem @@ got void * @@ arch/mips/kernel/setup.c:105:55: sparse: expected void const volatile [noderef] __iomem *mem arch/mips/kernel/setup.c:105:55: sparse: got void * arch/mips/kernel/setup.c:106:62: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void volatile [noderef] __iomem *mem @@ got void *dm @@ arch/mips/kernel/setup.c:106:62: sparse: expected void volatile [noderef] __iomem *mem arch/mips/kernel/setup.c:106:62: sparse: got void *dm arch/mips/kernel/setup.c:107:41: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *mem @@ got void *dm @@ arch/mips/kernel/setup.c:107:41: sparse: expected void const volatile [noderef] __iomem *mem arch/mips/kernel/setup.c:107:41: sparse: got void *dm arch/mips/kernel/setup.c:107:63: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile [noderef] __iomem *mem @@ got void * @@ arch/mips/kernel/setup.c:107:63: sparse: expected void const volatile [noderef] __iomem *mem arch/mips/kernel/setup.c:107:63: sparse: got void * arch/mips/kernel/setup.c: note: in included file (through include/linux/mmzone.h, include/linux/gfp.h, include/linux/xarray.h, ...): include/linux/page-flags.h:240:46: sparse: sparse: self-comparison always evaluates to false include/linux/page-flags.h:240:46: sparse: sparse: self-comparison always evaluates to false vim +104 arch/mips/kernel/setup.c 97 98 void __init detect_memory_region(phys_addr_t start, phys_addr_t sz_min, phys_addr_t sz_max) 99 { 100 void *dm = (void *)KSEG1ADDR(&detect_magic); 101 phys_addr_t size; 102 103 for (size = sz_min; size < sz_max; size <<= 1) { > 104 __raw_writel(MIPS_MEM_TEST_PATTERN, dm); > 105 if (__raw_readl(dm) == __raw_readl(dm + size)) { 106 __raw_writel(~MIPS_MEM_TEST_PATTERN, dm); 107 if (__raw_readl(dm) == __raw_readl(dm + size)) 108 break; 109 } 110 } 111 112 pr_debug("Memory: %lluMB of RAM detected at 0x%llx (min: %lluMB, max: %lluMB)\n", 113 ((unsigned long long) size) / SZ_1M, 114 (unsigned long long) start, 115 ((unsigned long long) sz_min) / SZ_1M, 116 ((unsigned long long) sz_max) / SZ_1M); 117 118 memblock_add(start, size); 119 } 120 #endif /* CONFIG_64BIT */ 121 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
