Hi Johannes, kernel test robot noticed the following build warnings: [auto build test WARNING on v6.4-rc5] [also build test WARNING on linus/master next-20230609] [cannot apply to hid/for-next] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Johannes-Roith/hid-mcp2200-updated-hid-id-h/20230612-005025 base: v6.4-rc5 patch link: https://lore.kernel.org/r/20230611164811.1388-2-johannes%40gnu-linux.rocks patch subject: [PATCH 2/2] hid-mcp2200 - updated hid-id.h config: um-x86_64_defconfig (https://download.01.org/0day-ci/archive/20230612/202306120220.hHmBq7QJ-lkp@xxxxxxxxx/config) compiler: clang version 15.0.7 (https://github.com/llvm/llvm-project.git 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a) reproduce (this is a W=1 build): mkdir -p ~/bin wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install um cross compiling tool for clang build # apt-get install binutils-um-linux-gnu git checkout v6.4-rc5 b4 shazam https://lore.kernel.org/r/20230611164811.1388-2-johannes@gnu-linux.rocks # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=um olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=um SHELL=/bin/bash drivers/ 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/202306120220.hHmBq7QJ-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from drivers/hid/hid-core.c:31: In file included from include/linux/hid.h:29: In file included from include/linux/hid_bpf.h:6: In file included from include/linux/bpf.h:31: In file included from include/linux/memcontrol.h:13: In file included from include/linux/cgroup.h:26: In file included from include/linux/kernel_stat.h:9: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from arch/um/include/asm/hardirq.h:5: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/um/include/asm/io.h:24: 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/hid/hid-core.c:31: In file included from include/linux/hid.h:29: In file included from include/linux/hid_bpf.h:6: In file included from include/linux/bpf.h:31: In file included from include/linux/memcontrol.h:13: In file included from include/linux/cgroup.h:26: In file included from include/linux/kernel_stat.h:9: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from arch/um/include/asm/hardirq.h:5: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/um/include/asm/io.h:24: 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/hid/hid-core.c:31: In file included from include/linux/hid.h:29: In file included from include/linux/hid_bpf.h:6: In file included from include/linux/bpf.h:31: In file included from include/linux/memcontrol.h:13: In file included from include/linux/cgroup.h:26: In file included from include/linux/kernel_stat.h:9: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from arch/um/include/asm/hardirq.h:5: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/um/include/asm/io.h:24: 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); ~~~~~~~~~~ ^ include/asm-generic/io.h:692:20: 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:700:20: 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:708:20: 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:717:21: 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:726:21: 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:735:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ In file included from drivers/hid/hid-core.c:36: >> drivers/hid/hid-ids.h:915:9: warning: 'USB_DEVICE_ID_MCP2221' macro redefined [-Wmacro-redefined] #define USB_DEVICE_ID_MCP2221 0x00df ^ drivers/hid/hid-ids.h:914:9: note: previous definition is here #define USB_DEVICE_ID_MCP2221 0x00dd ^ 13 warnings generated. vim +/USB_DEVICE_ID_MCP2221 +915 drivers/hid/hid-ids.h 905 906 #define USB_VENDOR_ID_MICROCHIP 0x04d8 907 #define USB_DEVICE_ID_PICKIT1 0x0032 908 #define USB_DEVICE_ID_PICKIT2 0x0033 909 #define USB_DEVICE_ID_PICOLCD 0xc002 910 #define USB_DEVICE_ID_PICOLCD_BOOTLOADER 0xf002 911 #define USB_DEVICE_ID_PICK16F1454 0x0042 912 #define USB_DEVICE_ID_PICK16F1454_V2 0xf2f7 913 #define USB_DEVICE_ID_LUXAFOR 0xf372 914 #define USB_DEVICE_ID_MCP2221 0x00dd > 915 #define USB_DEVICE_ID_MCP2221 0x00df 916 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
