tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 2a860505b617cf8fda4ebff6cf05d3f774145440 commit: 8c966aadcc023c8db7a9d24a3a504a9b39b1202c [10253/10591] fpga: Use device_get_match_data() config: hexagon-randconfig-r021-20221128 (https://download.01.org/0day-ci/archive/20231010/202310100247.Y7BFcalX-lkp@xxxxxxxxx/config) compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231010/202310100247.Y7BFcalX-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/202310100247.Y7BFcalX-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from drivers/fpga/xilinx-pr-decoupler.c:11: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:337: include/asm-generic/io.h:547:31: 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:560:61: 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 drivers/fpga/xilinx-pr-decoupler.c:11: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:337: include/asm-generic/io.h:573:61: 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 drivers/fpga/xilinx-pr-decoupler.c:11: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:337: include/asm-generic/io.h:584:33: 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:594:59: 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:604:59: 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); ~~~~~~~~~~ ^ >> drivers/fpga/xilinx-pr-decoupler.c:94:34: warning: unused variable 'xlnx_pr_decoupler_of_match' [-Wunused-const-variable] static const struct of_device_id xlnx_pr_decoupler_of_match[] = { ^ 7 warnings generated. vim +/xlnx_pr_decoupler_of_match +94 drivers/fpga/xilinx-pr-decoupler.c 30a2ac9a8bb5fce1 Nava kishore Manne 2021-02-11 93 7e961c12be424c6c Moritz Fischer 2017-03-24 @94 static const struct of_device_id xlnx_pr_decoupler_of_match[] = { 30a2ac9a8bb5fce1 Nava kishore Manne 2021-02-11 95 { .compatible = "xlnx,pr-decoupler-1.00", .data = &decoupler_config }, 30a2ac9a8bb5fce1 Nava kishore Manne 2021-02-11 96 { .compatible = "xlnx,pr-decoupler", .data = &decoupler_config }, 30a2ac9a8bb5fce1 Nava kishore Manne 2021-02-11 97 { .compatible = "xlnx,dfx-axi-shutdown-manager-1.00", 30a2ac9a8bb5fce1 Nava kishore Manne 2021-02-11 98 .data = &shutdown_config }, 30a2ac9a8bb5fce1 Nava kishore Manne 2021-02-11 99 { .compatible = "xlnx,dfx-axi-shutdown-manager", 30a2ac9a8bb5fce1 Nava kishore Manne 2021-02-11 100 .data = &shutdown_config }, 7e961c12be424c6c Moritz Fischer 2017-03-24 101 {}, 7e961c12be424c6c Moritz Fischer 2017-03-24 102 }; 7e961c12be424c6c Moritz Fischer 2017-03-24 103 MODULE_DEVICE_TABLE(of, xlnx_pr_decoupler_of_match); 7e961c12be424c6c Moritz Fischer 2017-03-24 104 :::::: The code at line 94 was first introduced by commit :::::: 7e961c12be424c6c1e355d469cc1b82dbf3af718 fpga: Add support for Xilinx LogiCORE PR Decoupler :::::: TO: Moritz Fischer <mdf@xxxxxxxxxx> :::::: CC: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
