Re: [PATCH 1/3] hwmon: (sht3x)remove sht3x_platform_data

[kernel test robot <lkp@intel.com>]

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@intel.com/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@DB4PR10MB6261.EURPRD10.PROD.OUTLOOK.COM
        # 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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202306141736.b9bPRO0Z-lkp@intel.com/

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