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Message-ID: <202407280548.1MbEgmkH-lkp@intel.com>
Date: Sun, 28 Jul 2024 05:48:32 +0800
From: kernel test robot <lkp@...el.com>
To: Matti Vaittinen <matti.vaittinen@...rohmeurope.com>,
	Matti Vaittinen <mazziesaccount@...il.com>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
	linux-kernel@...r.kernel.org, Mark Brown <broonie@...nel.org>,
	Guenter Roeck <linux@...ck-us.net>
Subject: drivers/iio/light/opt4001.c:215:9: error: call to
 '__compiletime_assert_530' declared with 'error' attribute: FIELD_PREP:
 value too large for the field

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   ff30564411ffdcee49d579cb15eb13185a36e253
commit: 96e20adc43c4f81e9163a5188cee75a6dd393e09 regulator: change stubbed devm_regulator_get_enable to return Ok
date:   3 months ago
config: s390-randconfig-001-20240728 (https://download.01.org/0day-ci/archive/20240728/202407280548.1MbEgmkH-lkp@intel.com/config)
compiler: clang version 16.0.6 (https://github.com/llvm/llvm-project 7cbf1a2591520c2491aa35339f227775f4d3adf6)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240728/202407280548.1MbEgmkH-lkp@intel.com/reproduce)

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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202407280548.1MbEgmkH-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from drivers/iio/light/opt4001.c:16:
   In file included from include/linux/regmap.h:20:
   In file included from include/linux/iopoll.h:14:
   In file included from include/linux/io.h:13:
   In file included from arch/s390/include/asm/io.h:78:
   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/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu'
   #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
                                                             ^
   include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
   #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
                                                        ^
   In file included from drivers/iio/light/opt4001.c:16:
   In file included from include/linux/regmap.h:20:
   In file included from include/linux/iopoll.h:14:
   In file included from include/linux/io.h:13:
   In file included from arch/s390/include/asm/io.h:78:
   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/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu'
   #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
                                                             ^
   include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
   #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
                                                        ^
   In file included from drivers/iio/light/opt4001.c:16:
   In file included from include/linux/regmap.h:20:
   In file included from include/linux/iopoll.h:14:
   In file included from include/linux/io.h:13:
   In file included from arch/s390/include/asm/io.h:78:
   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);
                   ~~~~~~~~~~ ^
>> drivers/iio/light/opt4001.c:215:9: error: call to '__compiletime_assert_530' declared with 'error' attribute: FIELD_PREP: value too large for the field
           reg |= FIELD_PREP(OPT4001_CTRL_CONV_TIME_MASK, chip->int_time);
                  ^
   include/linux/bitfield.h:115:3: note: expanded from macro 'FIELD_PREP'
                   __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: ");    \
                   ^
   include/linux/bitfield.h:68:3: note: expanded from macro '__BF_FIELD_CHECK'
                   BUILD_BUG_ON_MSG(__builtin_constant_p(_val) ?           \
                   ^
   include/linux/build_bug.h:39:37: note: expanded from macro 'BUILD_BUG_ON_MSG'
   #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
                                       ^
   note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
   include/linux/compiler_types.h:437:2: note: expanded from macro '_compiletime_assert'
           __compiletime_assert(condition, msg, prefix, suffix)
           ^
   include/linux/compiler_types.h:430:4: note: expanded from macro '__compiletime_assert'
                           prefix ## suffix();                             \
                           ^
   <scratch space>:17:1: note: expanded from here
   __compiletime_assert_530
   ^
   12 warnings and 1 error generated.


vim +215 drivers/iio/light/opt4001.c

9a9608418292bb Stefan Windfeldt-Prytz 2023-04-26  207  
9a9608418292bb Stefan Windfeldt-Prytz 2023-04-26  208  static int opt4001_set_conf(struct opt4001_chip *chip)
9a9608418292bb Stefan Windfeldt-Prytz 2023-04-26  209  {
9a9608418292bb Stefan Windfeldt-Prytz 2023-04-26  210  	struct device *dev = &chip->client->dev;
9a9608418292bb Stefan Windfeldt-Prytz 2023-04-26  211  	u16 reg;
9a9608418292bb Stefan Windfeldt-Prytz 2023-04-26  212  	int ret;
9a9608418292bb Stefan Windfeldt-Prytz 2023-04-26  213  
9a9608418292bb Stefan Windfeldt-Prytz 2023-04-26  214  	reg = FIELD_PREP(OPT4001_CTRL_RANGE_MASK, OPT4001_CTRL_LIGHT_SCALE_AUTO);
9a9608418292bb Stefan Windfeldt-Prytz 2023-04-26 @215  	reg |= FIELD_PREP(OPT4001_CTRL_CONV_TIME_MASK, chip->int_time);
9a9608418292bb Stefan Windfeldt-Prytz 2023-04-26  216  	reg |= FIELD_PREP(OPT4001_CTRL_OPER_MODE_MASK, OPT4001_CTRL_OPER_MODE_CONTINUOUS);
9a9608418292bb Stefan Windfeldt-Prytz 2023-04-26  217  
9a9608418292bb Stefan Windfeldt-Prytz 2023-04-26  218  	ret = regmap_write(chip->regmap, OPT4001_CTRL, reg);
9a9608418292bb Stefan Windfeldt-Prytz 2023-04-26  219  	if (ret)
9a9608418292bb Stefan Windfeldt-Prytz 2023-04-26  220  		dev_err(dev, "Failed to set configuration\n");
9a9608418292bb Stefan Windfeldt-Prytz 2023-04-26  221  
9a9608418292bb Stefan Windfeldt-Prytz 2023-04-26  222  	return ret;
9a9608418292bb Stefan Windfeldt-Prytz 2023-04-26  223  }
9a9608418292bb Stefan Windfeldt-Prytz 2023-04-26  224  

:::::: The code at line 215 was first introduced by commit
:::::: 9a9608418292bb8733805c3f3123dfe0454fadac iio: light: Add support for TI OPT4001 light sensor

:::::: TO: Stefan Windfeldt-Prytz <stefan.windfeldt-prytz@...s.com>
:::::: CC: Jonathan Cameron <Jonathan.Cameron@...wei.com>

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

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