Re: [PATCH 29/30] iio: imu: st_lsm6dsx: st_lsm6dsx: Mark 'st_lsm6dsx_accel_ext_info' as __maybe_unused

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On Fri, 17 Jul 2020 17:55:37 +0100
Lee Jones <lee.jones@xxxxxxxxxx> wrote:

> It doesn't make sense to move it into '*core*' as it's co-located with
> other, similar definitions which are used in multiple locations.
> 
> Fixes the following W=1 kernel build warning(s):
> 
>  In file included from drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c:17:
>  drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h:497:44: warning: ‘st_lsm6dsx_accel_ext_info’ defined but not used [-Wunused-const-variable=]
>  497 | static const struct iio_chan_spec_ext_info st_lsm6dsx_accel_ext_info[] = {
>  | ^~~~~~~~~~~~~~~~~~~~~~~~~
>  In file included from drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_spi.c:17:
>  drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h:497:44: warning: ‘st_lsm6dsx_accel_ext_info’ defined but not used [-Wunused-const-variable=]
>  497 | static const struct iio_chan_spec_ext_info st_lsm6dsx_accel_ext_info[] = {
>  | ^~~~~~~~~~~~~~~~~~~~~~~~~
>  In file included from drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c:16:
>  drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h:497:44: warning: ‘st_lsm6dsx_accel_ext_info’ defined but not used [-Wunused-const-variable=]
>  497 | static const struct iio_chan_spec_ext_info st_lsm6dsx_accel_ext_info[] = {
>  | ^~~~~~~~~~~~~~~~~~~~~~~~~
> 
> Cc: Lorenzo Bianconi <lorenzo.bianconi83@xxxxxxxxx>
> Cc: Denis Ciocca <denis.ciocca@xxxxxx>
> Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx>

Applied to the togreg branch of iio.git and pushed out as testing for the
autobuilders to play with it.

Thanks,

Jonathan

> ---
>  drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
> index 3e47a9287938b..d82ec6398222f 100644
> --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
> +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
> @@ -494,7 +494,8 @@ st_lsm6dsx_get_mount_matrix(const struct iio_dev *iio_dev,
>  	return &hw->orientation;
>  }
>  
> -static const struct iio_chan_spec_ext_info st_lsm6dsx_accel_ext_info[] = {
> +static const
> +struct iio_chan_spec_ext_info __maybe_unused st_lsm6dsx_accel_ext_info[] = {
>  	IIO_MOUNT_MATRIX(IIO_SHARED_BY_ALL, st_lsm6dsx_get_mount_matrix),
>  	{ }
>  };





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