Hi JuenKit, kernel test robot noticed the following build warnings: [auto build test WARNING on groeck-staging/hwmon-next] [also build test WARNING on linus/master v6.4-rc6 next-20230614] [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/JuenKit-Yip/hwmon-sht3x-add-medium-repeatability-support/20230614-143100 base: https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-next patch link: https://lore.kernel.org/r/DB4PR10MB6261D79FE16EC2BBD5316B91925AA%40DB4PR10MB6261.EURPRD10.PROD.OUTLOOK.COM patch subject: [PATCH 1/3] hwmon: (sht3x)remove sht3x_platform_data config: hexagon-randconfig-r045-20230612 (https://download.01.org/0day-ci/archive/20230614/202306141736.b9bPRO0Z-lkp@xxxxxxxxx/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a) 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 git remote add groeck-staging https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git git fetch groeck-staging hwmon-next git checkout groeck-staging/hwmon-next b4 shazam https://lore.kernel.org/r/DB4PR10MB6261D79FE16EC2BBD5316B91925AA@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=hexagon olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/hwmon/ 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/202306141736.b9bPRO0Z-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from drivers/hwmon/sht3x.c:17: In file included from include/linux/i2c.h:19: In file included from include/linux/regulator/consumer.h:35: In file included from include/linux/suspend.h:5: In file included from include/linux/swap.h:9: 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/hexagon/include/generated/asm/hardirq.h:1: 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/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] 547 | 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] 560 | 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' 37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x)) | ^ In file included from drivers/hwmon/sht3x.c:17: In file included from include/linux/i2c.h:19: In file included from include/linux/regulator/consumer.h:35: In file included from include/linux/suspend.h:5: In file included from include/linux/swap.h:9: 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/hexagon/include/generated/asm/hardirq.h:1: 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/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] 573 | 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' 35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x)) | ^ In file included from drivers/hwmon/sht3x.c:17: In file included from include/linux/i2c.h:19: In file included from include/linux/regulator/consumer.h:35: In file included from include/linux/suspend.h:5: In file included from include/linux/swap.h:9: 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/hexagon/include/generated/asm/hardirq.h:1: 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/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] 584 | __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] 594 | __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] 604 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); | ~~~~~~~~~~ ^ >> drivers/hwmon/sht3x.c:25:28: warning: unused variable 'sht3x_cmd_measure_blocking_hpm' [-Wunused-const-variable] 25 | static const unsigned char sht3x_cmd_measure_blocking_hpm[] = { 0x2c, 0x06 }; | ^ >> drivers/hwmon/sht3x.c:29:28: warning: unused variable 'sht3x_cmd_measure_blocking_lpm' [-Wunused-const-variable] 29 | static const unsigned char sht3x_cmd_measure_blocking_lpm[] = { 0x2c, 0x10 }; | ^ 8 warnings generated. vim +/sht3x_cmd_measure_blocking_hpm +25 drivers/hwmon/sht3x.c 7c84f7f80d6fcea David Frey 2016-06-02 23 cecbab8bdd40311 JuenKit Yip 2023-06-14 24 /* commands (high repeatability mode) */ 7c84f7f80d6fcea David Frey 2016-06-02 @25 static const unsigned char sht3x_cmd_measure_blocking_hpm[] = { 0x2c, 0x06 }; 7c84f7f80d6fcea David Frey 2016-06-02 26 static const unsigned char sht3x_cmd_measure_nonblocking_hpm[] = { 0x24, 0x00 }; 7c84f7f80d6fcea David Frey 2016-06-02 27 cecbab8bdd40311 JuenKit Yip 2023-06-14 28 /* commands (low repeatability mode) */ 7c84f7f80d6fcea David Frey 2016-06-02 @29 static const unsigned char sht3x_cmd_measure_blocking_lpm[] = { 0x2c, 0x10 }; 7c84f7f80d6fcea David Frey 2016-06-02 30 static const unsigned char sht3x_cmd_measure_nonblocking_lpm[] = { 0x24, 0x16 }; 7c84f7f80d6fcea David Frey 2016-06-02 31 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
