Messages in this thread | | | Date | Thu, 7 Jul 2022 12:15:34 +0800 | From | kernel test robot <> | Subject | [sbates130272-p2pmem:p2pdma_user_cmb_v8 5/21] kernel/dma/direct.c:467:7: error: call to undeclared function 'sg_is_dma_bus_address'; ISO C99 and later do not support implicit function declarations |
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tree: https://github.com/sbates130272/linux-p2pmem.git p2pdma_user_cmb_v8 head: a2dd359c3f1baca6c0438adec8900b7fe57f92af commit: 8d3e7a5dd204152609cd4eee448224f071493784 [5/21] dma-direct: support PCI P2PDMA pages in dma-direct map_sg config: s390-randconfig-r044-20220706 (https://download.01.org/0day-ci/archive/20220707/202207071200.km0YZBTu-lkp@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 66ae1d60bb278793fd651cece264699d522bab84) 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 s390 cross compiling tool for clang build # apt-get install binutils-s390x-linux-gnu # https://github.com/sbates130272/linux-p2pmem/commit/8d3e7a5dd204152609cd4eee448224f071493784 git remote add sbates130272-p2pmem https://github.com/sbates130272/linux-p2pmem.git git fetch --no-tags sbates130272-p2pmem p2pdma_user_cmb_v8 git checkout 8d3e7a5dd204152609cd4eee448224f071493784 # 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=s390 SHELL=/bin/bash kernel/dma/
If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
In file included from kernel/dma/direct.c:7: In file included from include/linux/memblock.h:13: In file included from arch/s390/include/asm/dma.h:5: In file included from arch/s390/include/asm/io.h:75: 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/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu' #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x)) ^ include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16' #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x)) ^ In file included from kernel/dma/direct.c:7: In file included from include/linux/memblock.h:13: In file included from arch/s390/include/asm/dma.h:5: In file included from arch/s390/include/asm/io.h:75: 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/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x)) ^ include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32' #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x)) ^ In file included from kernel/dma/direct.c:7: In file included from include/linux/memblock.h:13: In file included from arch/s390/include/asm/dma.h:5: In file included from arch/s390/include/asm/io.h:75: 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:609:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsb(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:617:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsw(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:625:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:634:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesb(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:643:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesw(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:652:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ >> kernel/dma/direct.c:467:7: error: call to undeclared function 'sg_is_dma_bus_address'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] if (sg_is_dma_bus_address(sg)) ^ >> kernel/dma/direct.c:468:4: error: call to undeclared function 'sg_dma_unmark_bus_address'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] sg_dma_unmark_bus_address(sg); ^ 12 warnings and 2 errors generated.
vim +/sg_is_dma_bus_address +467 kernel/dma/direct.c
455 456 /* 457 * Unmaps segments, except for ones marked as pci_p2pdma which do not 458 * require any further action as they contain a bus address. 459 */ 460 void dma_direct_unmap_sg(struct device *dev, struct scatterlist *sgl, 461 int nents, enum dma_data_direction dir, unsigned long attrs) 462 { 463 struct scatterlist *sg; 464 int i; 465 466 for_each_sg(sgl, sg, nents, i) { > 467 if (sg_is_dma_bus_address(sg)) > 468 sg_dma_unmark_bus_address(sg); 469 else 470 dma_direct_unmap_page(dev, sg->dma_address, 471 sg_dma_len(sg), dir, attrs); 472 } 473 } 474 #endif 475
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