Re: [PATCH v7 5/6] iio: ABI: Add partial quaternion modifier

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

Hi Francesco,

kernel test robot noticed the following build warnings:

[auto build test WARNING on next-20260303]
[also build test WARNING on v7.0-rc2]
[cannot apply to jic23-iio/togreg linus/master v7.0-rc2 v7.0-rc1 v6.19]
[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/Francesco-Lavra/iio-imu-st_lsm6dsx-Fix-check-for-invalid-samples-from-FIFO/20260304-161927
base:   next-20260303
patch link:    https://lore.kernel.org/r/20260304080706.2844472-1-flavra%40baylibre.com
patch subject: [PATCH v7 5/6] iio: ABI: Add partial quaternion modifier
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
docutils: docutils (Docutils 0.21.2, Python 3.13.5, on linux)
reproduce: (https://download.01.org/0day-ci/archive/20260304/202603042011.WHve1GRB-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202603042011.WHve1GRB-lkp@intel.com/

All warnings (new ones prefixed by >>):

   Warning: tools/docs/documentation-file-ref-check references a file that doesn't exist: Documentation/devicetree/dt-object-internal.txt
   Warning: tools/docs/documentation-file-ref-check references a file that doesn't exist: m,^Documentation/scheduler/sched-pelt
   Warning: tools/docs/documentation-file-ref-check references a file that doesn't exist: m,(Documentation/translations/[
   Using alabaster theme
   Documentation/ABI/testing/sysfs-bus-iio:1758: ERROR: Unexpected indentation. [docutils]
>> Documentation/ABI/testing/sysfs-bus-iio:1758: WARNING: Block quote ends without a blank line; unexpected unindent. [docutils]
   Documentation/core-api/kref:328: ./include/linux/kref.h:72: WARNING: Invalid C declaration: Expected end of definition. [error at 96]
   int kref_put_mutex (struct kref *kref, void (*release)(struct kref *kref), struct mutex *mutex) __cond_acquires(true# mutex)
   ------------------------------------------------------------------------------------------------^
   Documentation/core-api/kref:328: ./include/linux/kref.h:94: WARNING: Invalid C declaration: Expected end of definition. [error at 92]
   int kref_put_lock (struct kref *kref, void (*release)(struct kref *kref), spinlock_t *lock) __cond_acquires(true# lock)


vim +1758 Documentation/ABI/testing/sysfs-bus-iio

> 1758	What:		/sys/bus/iio/devices/iio:deviceX/in_rot_partial_quaternion_raw
  1759	KernelVersion:	7.1
  1760	Contact:	linux-iio@vger.kernel.org
  1761	Description:
  1762			Raw value of {x, y, z} components of the quaternion vector. These
  1763			components represent the axis about which a rotation occurs, and are
  1764			subject to the following costraints:
  1765			- the quaternion vector is normalized, i.e. x^2 + y^2 + z^2 + w^2 = 1
  1766			- the rotation angle is within the [-180, 180] range, i.e. the w
  1767			  component (which represents the amount of rotation) is non-negative
  1768			These constraints allow the w value to be calculated from the other
  1769			components: w = sqrt(1 - (x^2 + y^2 + z^2)).
  1770	

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