drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h:484:1: warning: 'inline' is not at beginning of declaration

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   1c24a186398f59c80adb9a967486b65c1423a59d
commit: 04e6fedb18f6899453e59a748fb95be56ef73836 iio: imu: st_lsm6dsx: add mount matrix support
date:   2 years, 2 months ago
config: x86_64-randconfig-a003-20220328 (https://download.01.org/0day-ci/archive/20220330/202203301438.ye1Y6gf5-lkp@xxxxxxxxx/config)
compiler: gcc-9 (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04e6fedb18f6899453e59a748fb95be56ef73836
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 04e6fedb18f6899453e59a748fb95be56ef73836
        # save the config file to linux build tree
        mkdir build_dir
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

   In file included from drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c:63:
>> drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h:484:1: warning: 'inline' is not at beginning of declaration [-Wold-style-declaration]
     484 | static const inline struct iio_mount_matrix *
         | ^~~~~~
--
   In file included from drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c:41:
>> drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h:484:1: warning: 'inline' is not at beginning of declaration [-Wold-style-declaration]
     484 | static const inline struct iio_mount_matrix *
         | ^~~~~~
   drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h:494:44: warning: 'st_lsm6dsx_accel_ext_info' defined but not used [-Wunused-const-variable=]
     494 | static const struct iio_chan_spec_ext_info st_lsm6dsx_accel_ext_info[] = {
         |                                            ^~~~~~~~~~~~~~~~~~~~~~~~~


vim +/inline +484 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h

   483	
 > 484	static const inline struct iio_mount_matrix *
   485	st_lsm6dsx_get_mount_matrix(const struct iio_dev *iio_dev,
   486				    const struct iio_chan_spec *chan)
   487	{
   488		struct st_lsm6dsx_sensor *sensor = iio_priv(iio_dev);
   489		struct st_lsm6dsx_hw *hw = sensor->hw;
   490	
   491		return &hw->orientation;
   492	}
   493	

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