tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: e3b18f7200f45d66f7141136c25554ac1e82009b commit: 97b15ccc1517033df349c32723651f31c9c1f264 [11413/12130] fpga: altera-ps-spi: Use spi_get_device_match_data() config: hexagon-randconfig-r011-20211004 (https://download.01.org/0day-ci/archive/20231013/202310132128.grw00tS2-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/20231013/202310132128.grw00tS2-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/202310132128.grw00tS2-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from drivers/fpga/altera-ps-spi.c:22: In file included from include/linux/spi/spi.h:17: In file included from include/linux/scatterlist.h:9: 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/altera-ps-spi.c:22: In file included from include/linux/spi/spi.h:17: In file included from include/linux/scatterlist.h:9: 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/altera-ps-spi.c:22: In file included from include/linux/spi/spi.h:17: In file included from include/linux/scatterlist.h:9: 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/altera-ps-spi.c:74:34: warning: unused variable 'of_ef_match' [-Wunused-const-variable] static const struct of_device_id of_ef_match[] = { ^ 7 warnings generated. vim +/of_ef_match +74 drivers/fpga/altera-ps-spi.c 5692fae0742df7 Joshua Clayton 2017-06-14 73 5692fae0742df7 Joshua Clayton 2017-06-14 @74 static const struct of_device_id of_ef_match[] = { 5692fae0742df7 Joshua Clayton 2017-06-14 75 { .compatible = "altr,fpga-passive-serial", .data = &c5_data }, 5692fae0742df7 Joshua Clayton 2017-06-14 76 { .compatible = "altr,fpga-arria10-passive-serial", .data = &a10_data }, 5692fae0742df7 Joshua Clayton 2017-06-14 77 {} 5692fae0742df7 Joshua Clayton 2017-06-14 78 }; 5692fae0742df7 Joshua Clayton 2017-06-14 79 MODULE_DEVICE_TABLE(of, of_ef_match); 5692fae0742df7 Joshua Clayton 2017-06-14 80 :::::: The code at line 74 was first introduced by commit :::::: 5692fae0742df7587189174b1cba364d22846c85 fpga manager: Add altera-ps-spi driver for Altera FPGAs :::::: TO: Joshua Clayton <stillcompiling@xxxxxxxxx> :::::: CC: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
