Messages in this thread | | | Date | Thu, 9 Jun 2022 19:36:17 +0800 | From | kernel test robot <> | Subject | [avpatel:virtio_rpmsg_bus_fix_v1 45/52] arch/riscv/mm/dma-noncoherent.c:65:6: warning: no previous prototype for function 'riscv_init_cbom_blocksize' |
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tree: https://github.com/avpatel/linux.git virtio_rpmsg_bus_fix_v1 head: 390aaf641ff2f8919268d611e864227265c3f3f2 commit: 3485f5450237db107c3601d2b726458fb98027a6 [45/52] riscv: Implement Zicbom-based cache management operations config: riscv-randconfig-r042-20220609 (https://download.01.org/0day-ci/archive/20220609/202206091918.fF8xyBBM-lkp@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project b92436efcb7813fc481b30f2593a4907568d917a) 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 riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu # https://github.com/avpatel/linux/commit/3485f5450237db107c3601d2b726458fb98027a6 git remote add avpatel https://github.com/avpatel/linux.git git fetch --no-tags avpatel virtio_rpmsg_bus_fix_v1 git checkout 3485f5450237db107c3601d2b726458fb98027a6 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash arch/riscv/mm/ kernel/dma/
If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@intel.com>
All error/warnings (new ones prefixed by >>):
In file included from arch/riscv/mm/dma-noncoherent.c:8: In file included from include/linux/dma-direct.h:9: In file included from include/linux/dma-mapping.h:10: In file included from include/linux/scatterlist.h:9: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:464:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __raw_readb(PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:477:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu' #define __le16_to_cpu(x) ((__force __u16)(__le16)(x)) ^ In file included from arch/riscv/mm/dma-noncoherent.c:8: In file included from include/linux/dma-direct.h:9: In file included from include/linux/dma-mapping.h:10: In file included from include/linux/scatterlist.h:9: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) ((__force __u32)(__le32)(x)) ^ In file included from arch/riscv/mm/dma-noncoherent.c:8: In file included from include/linux/dma-direct.h:9: In file included from include/linux/dma-mapping.h:10: In file included from include/linux/scatterlist.h:9: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:501:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writeb(value, PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:511:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:521:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:1024:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port; ~~~~~~~~~~ ^ >> arch/riscv/mm/dma-noncoherent.c:65:6: warning: no previous prototype for function 'riscv_init_cbom_blocksize' [-Wmissing-prototypes] void riscv_init_cbom_blocksize(void) ^ arch/riscv/mm/dma-noncoherent.c:65:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void riscv_init_cbom_blocksize(void) ^ static >> arch/riscv/mm/dma-noncoherent.c:89:6: warning: variable 'cbom_hartid' is uninitialized when used here [-Wuninitialized] cbom_hartid, hartid); ^~~~~~~~~~~ include/linux/printk.h:528:37: note: expanded from macro 'pr_warn' printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__) ^~~~~~~~~~~ include/linux/printk.h:475:60: note: expanded from macro 'printk' #define printk(fmt, ...) printk_index_wrap(_printk, fmt, ##__VA_ARGS__) ^~~~~~~~~~~ include/linux/printk.h:447:19: note: expanded from macro 'printk_index_wrap' _p_func(_fmt, ##__VA_ARGS__); \ ^~~~~~~~~~~ arch/riscv/mm/dma-noncoherent.c:73:18: note: initialize the variable 'cbom_hartid' to silence this warning int cbom_hartid; ^ = 0 9 warnings generated. -- In file included from kernel/dma/pool.c:8: In file included from include/linux/dma-map-ops.h:9: In file included from include/linux/dma-mapping.h:10: In file included from include/linux/scatterlist.h:9: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:464:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __raw_readb(PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:477:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu' #define __le16_to_cpu(x) ((__force __u16)(__le16)(x)) ^ In file included from kernel/dma/pool.c:8: In file included from include/linux/dma-map-ops.h:9: In file included from include/linux/dma-mapping.h:10: In file included from include/linux/scatterlist.h:9: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) ((__force __u32)(__le32)(x)) ^ In file included from kernel/dma/pool.c:8: In file included from include/linux/dma-map-ops.h:9: In file included from include/linux/dma-mapping.h:10: In file included from include/linux/scatterlist.h:9: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:501:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writeb(value, PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:511:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:521:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:1024:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port; ~~~~~~~~~~ ^ >> kernel/dma/pool.c:105:9: error: call to undeclared function 'pgprot_dmacoherent'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] pgprot_dmacoherent(PAGE_KERNEL), ^ >> kernel/dma/pool.c:105:9: error: passing 'int' to parameter of incompatible type 'pgprot_t' pgprot_dmacoherent(PAGE_KERNEL), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/dma-map-ops.h:235:76: note: passing argument to parameter 'prot' here void *dma_common_contiguous_remap(struct page *page, size_t size, pgprot_t prot, ^ 7 warnings and 2 errors generated.
vim +/riscv_init_cbom_blocksize +65 arch/riscv/mm/dma-noncoherent.c
64 > 65 void riscv_init_cbom_blocksize(void) 66 { 67 struct device_node *node; 68 int ret; 69 u32 val; 70 71 for_each_of_cpu_node(node) { 72 int hartid = riscv_of_processor_hartid(node); 73 int cbom_hartid; 74 75 if (hartid < 0) 76 continue; 77 78 /* set block-size for cbom extension if available */ 79 ret = of_property_read_u32(node, "riscv,cbom-block-size", &val); 80 if (ret) 81 continue; 82 83 if (!riscv_cbom_block_size) { 84 riscv_cbom_block_size = val; 85 cbom_hartid = hartid; 86 } else { 87 if (riscv_cbom_block_size != val) 88 pr_warn("cbom-block-size mismatched between harts %d and %d\n", > 89 cbom_hartid, hartid);
-- 0-DAY CI Kernel Test Service https://01.org/lkp
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