[linux-next:master 1397/13846] drivers/iio/magnetometer/qmc5883l.c:377:8: error: call to '__compiletime_assert_536' declared with 'error' attribute: FIELD_PREP: value too large for the field

:::::: 
:::::: Manual check reason: "__compiletime_assert_NNN"
:::::: 

BCC: [email protected]
CC: [email protected]
TO: Siratul Islam <[email protected]>
CC: Jonathan Cameron <[email protected]>
CC: Andy Shevchenko <[email protected]>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   6b8c8af514d739d0335f5579b585e02babe8a727
commit: e8349f9473423fdd357da33eec628d5ea9c555f5 [1397/13846] iio: magnetometer: add driver for QST QMC5883L Sensor
:::::: branch date: 3 days ago
:::::: commit date: 6 weeks ago
config: s390-randconfig-r051-20260810 (https://download.01.org/0day-ci/archive/20260810/[email protected]/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260810/[email protected]/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 <[email protected]>
| Closes: https://lore.kernel.org/r/[email protected]/

All errors (new ones prefixed by >>):

>> drivers/iio/magnetometer/qmc5883l.c:377:8: error: call to '__compiletime_assert_536' declared with 'error' attribute: FIELD_PREP: value too large for the field
     377 |                             FIELD_PREP(QMC5883L_OSR_MASK, data->osr));
         |                             ^
   include/linux/bitfield.h:138:3: note: expanded from macro 'FIELD_PREP'
     138 |                 __FIELD_PREP(_mask, _val, "FIELD_PREP: ");              \
         |                 ^
   include/linux/bitfield.h:91:3: note: expanded from macro '__FIELD_PREP'
      91 |                 __BF_FIELD_CHECK_MASK(mask, val, pfx);                  \
         |                 ^
   include/linux/bitfield.h:70:3: note: expanded from macro '__BF_FIELD_CHECK_MASK'
      70 |                 BUILD_BUG_ON_MSG(__builtin_constant_p(_val) ?           \
         |                 ^
   note: (skipping 2 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
   include/linux/compiler_types.h:690:2: note: expanded from macro '_compiletime_assert'
     690 |         __compiletime_assert(condition, msg, prefix, suffix)
         |         ^
   include/linux/compiler_types.h:683:4: note: expanded from macro '__compiletime_assert'
     683 |                         prefix ## suffix();                             \
         |                         ^
   <scratch space>:18:1: note: expanded from here
      18 | __compiletime_assert_536
         | ^
   1 error generated.


vim +377 drivers/iio/magnetometer/qmc5883l.c

e8349f9473423f Siratul Islam 2026-06-19  337  
e8349f9473423f Siratul Islam 2026-06-19  338  static int qmc5883l_init(struct qmc5883l_data *data)
e8349f9473423f Siratul Islam 2026-06-19  339  {
e8349f9473423f Siratul Islam 2026-06-19  340  	struct regmap *map = data->regmap;
e8349f9473423f Siratul Islam 2026-06-19  341  	unsigned int reg;
e8349f9473423f Siratul Islam 2026-06-19  342  	int ret;
e8349f9473423f Siratul Islam 2026-06-19  343  
e8349f9473423f Siratul Islam 2026-06-19  344  	ret = regmap_read(map, QMC5883L_REG_ID, &reg);
e8349f9473423f Siratul Islam 2026-06-19  345  	if (ret)
e8349f9473423f Siratul Islam 2026-06-19  346  		return ret;
e8349f9473423f Siratul Islam 2026-06-19  347  
e8349f9473423f Siratul Islam 2026-06-19  348  	/* Not failing because rev 1.0 had this register reserved */
e8349f9473423f Siratul Islam 2026-06-19  349  	if (reg != QMC5883L_CHIP_ID)
e8349f9473423f Siratul Islam 2026-06-19  350  		dev_warn(regmap_get_device(map),
e8349f9473423f Siratul Islam 2026-06-19  351  			 "Unknown chip id: 0x%02x, continuing\n", reg);
e8349f9473423f Siratul Islam 2026-06-19  352  
e8349f9473423f Siratul Islam 2026-06-19  353  	ret = regmap_write(map, QMC5883L_REG_CTRL2, QMC5883L_SOFT_RESET);
e8349f9473423f Siratul Islam 2026-06-19  354  	if (ret)
e8349f9473423f Siratul Islam 2026-06-19  355  		return ret;
e8349f9473423f Siratul Islam 2026-06-19  356  
e8349f9473423f Siratul Islam 2026-06-19  357  	/* Use POR completion time as a conservative bound */
e8349f9473423f Siratul Islam 2026-06-19  358  	fsleep(QMC5883L_PORT_US);
e8349f9473423f Siratul Islam 2026-06-19  359  
e8349f9473423f Siratul Islam 2026-06-19  360  	/* DRDY pin not used in this version of the driver */
e8349f9473423f Siratul Islam 2026-06-19  361  	ret = regmap_write(map, QMC5883L_REG_CTRL2, QMC5883L_INT_DISABLE);
e8349f9473423f Siratul Islam 2026-06-19  362  	if (ret)
e8349f9473423f Siratul Islam 2026-06-19  363  		return ret;
e8349f9473423f Siratul Islam 2026-06-19  364  
e8349f9473423f Siratul Islam 2026-06-19  365  	ret = regmap_write(map, QMC5883L_REG_SET_RESET, QMC5883L_SET_RESET_VAL);
e8349f9473423f Siratul Islam 2026-06-19  366  	if (ret)
e8349f9473423f Siratul Islam 2026-06-19  367  		return ret;
e8349f9473423f Siratul Islam 2026-06-19  368  
e8349f9473423f Siratul Islam 2026-06-19  369  	data->odr = QMC5883L_ODR_50HZ;
e8349f9473423f Siratul Islam 2026-06-19  370  	data->range = QMC5883L_RNG_2G;
e8349f9473423f Siratul Islam 2026-06-19  371  	data->osr = QMC5883L_OSR_64;
e8349f9473423f Siratul Islam 2026-06-19  372  
e8349f9473423f Siratul Islam 2026-06-19  373  	return regmap_write(map, QMC5883L_REG_CTRL1,
e8349f9473423f Siratul Islam 2026-06-19  374  			    FIELD_PREP(QMC5883L_MODE_MASK, QMC5883L_MODE_CONT) |
e8349f9473423f Siratul Islam 2026-06-19  375  			    FIELD_PREP(QMC5883L_ODR_MASK, data->odr) |
e8349f9473423f Siratul Islam 2026-06-19  376  			    FIELD_PREP(QMC5883L_RNG_MASK, data->range) |
e8349f9473423f Siratul Islam 2026-06-19 @377  			    FIELD_PREP(QMC5883L_OSR_MASK, data->osr));
e8349f9473423f Siratul Islam 2026-06-19  378  }
e8349f9473423f Siratul Islam 2026-06-19  379  

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