Re: [PATCH v2 1/3] Input: ads7846 - Convert to use software nodes

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

Hi Linus,

kernel test robot noticed the following build errors:

[auto build test ERROR on 348551ddaf311c76b01cdcbaf61b6fef06a49144]

url:    https://github.com/intel-lab-lkp/linux/commits/Linus-Walleij/Input-ads7846-Convert-to-use-software-nodes/20230505-162601
base:   348551ddaf311c76b01cdcbaf61b6fef06a49144
patch link:    https://lore.kernel.org/r/20230430-nokia770-regression-v2-1-984ed3ca5444%40linaro.org
patch subject: [PATCH v2 1/3] Input: ads7846 - Convert to use software nodes
config: hexagon-randconfig-r041-20230501 (https://download.01.org/0day-ci/archive/20230505/202305051758.yjd7CtkI-lkp@intel.com/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/9708c9277cc820e52916ddf795926d3254bb5eed
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Linus-Walleij/Input-ads7846-Convert-to-use-software-nodes/20230505-162601
        git checkout 9708c9277cc820e52916ddf795926d3254bb5eed
        # 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/input/touchscreen/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202305051758.yjd7CtkI-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from drivers/input/touchscreen/ads7846.c:24:
   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]
           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/input/touchscreen/ads7846.c:24:
   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]
           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/input/touchscreen/ads7846.c:24:
   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]
           __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/input/touchscreen/ads7846.c:1406:21: error: use of undeclared identifier 'ads7846_dt_ids'
                   .of_match_table = ads7846_dt_ids,
                                     ^
   6 warnings and 1 error generated.


vim +/ads7846_dt_ids +1406 drivers/input/touchscreen/ads7846.c

  1401	
  1402	static struct spi_driver ads7846_driver = {
  1403		.driver = {
  1404			.name	= "ads7846",
  1405			.pm	= pm_sleep_ptr(&ads7846_pm),
> 1406			.of_match_table = ads7846_dt_ids,
  1407		},
  1408		.probe		= ads7846_probe,
  1409		.remove		= ads7846_remove,
  1410	};
  1411	

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