tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-next head: 1034cc423f1b4a7a9a56d310ca980fcd2753e11d commit: 14485de431b0a860d3a117fe518ce9ede8c76732 [70/83] usb: Use device_get_match_data() config: hexagon-buildonly-randconfig-r004-20220331 (https://download.01.org/0day-ci/archive/20231013/202310131627.M43j234A-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/20231013/202310131627.M43j234A-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/202310131627.M43j234A-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from drivers/usb/chipidea/ci_hdrc_usb2.c:9: In file included from include/linux/dma-mapping.h:11: 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/usb/chipidea/ci_hdrc_usb2.c:9: In file included from include/linux/dma-mapping.h:11: 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/usb/chipidea/ci_hdrc_usb2.c:9: In file included from include/linux/dma-mapping.h:11: 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/usb/chipidea/ci_hdrc_usb2.c:41:34: warning: unused variable 'ci_hdrc_usb2_of_match' [-Wunused-const-variable] static const struct of_device_id ci_hdrc_usb2_of_match[] = { ^ 7 warnings generated. vim +/ci_hdrc_usb2_of_match +41 drivers/usb/chipidea/ci_hdrc_usb2.c 1c16f63d1e6c94 Michał Mirosław 2020-04-04 40 84bc70f94d81f1 Nathan Sullivan 2015-08-31 @41 static const struct of_device_id ci_hdrc_usb2_of_match[] = { 84bc70f94d81f1 Nathan Sullivan 2015-08-31 42 { .compatible = "chipidea,usb2" }, 84bc70f94d81f1 Nathan Sullivan 2015-08-31 43 { .compatible = "xlnx,zynq-usb-2.20a", .data = &ci_zynq_pdata }, 1c16f63d1e6c94 Michał Mirosław 2020-04-04 44 { .compatible = "lsi,zevio-usb", .data = &ci_zevio_pdata }, 84bc70f94d81f1 Nathan Sullivan 2015-08-31 45 { } 84bc70f94d81f1 Nathan Sullivan 2015-08-31 46 }; 84bc70f94d81f1 Nathan Sullivan 2015-08-31 47 MODULE_DEVICE_TABLE(of, ci_hdrc_usb2_of_match); 84bc70f94d81f1 Nathan Sullivan 2015-08-31 48 :::::: The code at line 41 was first introduced by commit :::::: 84bc70f94d81f1d3107dbcdafc1b193169e82131 usb: chipidea: add xilinx zynq platform data :::::: TO: Nathan Sullivan <nathan.sullivan@xxxxxx> :::::: CC: Peter Chen <peter.chen@xxxxxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
