Hi Souradeep, kernel test robot noticed the following build warnings: [auto build test WARNING on robh/for-next] [also build test WARNING on krzk-dt/for-next linus/master v6.4-rc1 next-20230510] [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/Souradeep-Chowdhury/dt-bindings-sram-qcom-imem-Add-Boot-Stat-region-within-IMEM/20230509-185332 base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next patch link: https://lore.kernel.org/r/35863b47c04c2edd7ae49c57d23682aba6111d4f.1683628357.git.quic_schowdhu%40quicinc.com patch subject: [PATCH V6 2/3] soc: qcom: boot_stat: Add Driver Support for Boot Stats config: hexagon-allyesconfig (https://download.01.org/0day-ci/archive/20230510/202305101517.ld1hBheg-lkp@xxxxxxxxx/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project b0fb98227c90adf2536c9ad644a74d5e92961111) 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 # https://github.com/intel-lab-lkp/linux/commit/7883e99da179c8b49f6834b84a91259b03679e56 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Souradeep-Chowdhury/dt-bindings-sram-qcom-imem-Add-Boot-Stat-region-within-IMEM/20230509-185332 git checkout 7883e99da179c8b49f6834b84a91259b03679e56 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/hwmon/ drivers/net/can/usb/ drivers/soc/qcom/ drivers/watchdog/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202305101517.ld1hBheg-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from drivers/soc/qcom/boot_stats.c:9: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:334: 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/soc/qcom/boot_stats.c:9: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:334: 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/soc/qcom/boot_stats.c:9: In file included from include/linux/io.h:13: In file included from arch/hexagon/include/asm/io.h:334: 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/soc/qcom/boot_stats.c:76:6: warning: no previous prototype for function 'boot_stats_remove' [-Wmissing-prototypes] void boot_stats_remove(struct platform_device *pdev) ^ drivers/soc/qcom/boot_stats.c:76:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void boot_stats_remove(struct platform_device *pdev) ^ static 7 warnings generated. vim +/boot_stats_remove +76 drivers/soc/qcom/boot_stats.c 75 > 76 void boot_stats_remove(struct platform_device *pdev) 77 { 78 struct bs_data *drvdata = platform_get_drvdata(pdev); 79 80 debugfs_remove_recursive(drvdata->dbg_dir); 81 } 82 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
