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iio: st_lsm6dsx: Mark predefined constants with __maybe_unused 

Since we put static variable to a header file it's copied to each module
that includes the header. But not all of them are actually used it.

Mark predefined constants with __maybe_unused to calm a compiler down:

In file included from drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c:17:
.../st_lsm6dsx/st_lsm6dsx.h:399:28: warning: ‘st_lsm6dsx_available_scan_masks’ defined but not used [-Wunused-const-variable=]
  399 | static const unsigned long st_lsm6dsx_available_scan_masks[] = {0x7, 0x0};
      |                            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.../st_lsm6dsx/st_lsm6dsx.h:392:36: warning: ‘st_lsm6dsx_event’ defined but not used [-Wunused-const-variable=]
  392 | static const struct iio_event_spec st_lsm6dsx_event = {
      |                                    ^~~~~~~~~~~~~~~~
...

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Andy Shevchenko 2019-12-16 20:19:23 +02:00 committed by Jonathan Cameron
parent 851644a60d
commit 07bf07e2cc
1 changed files with 5 additions and 2 deletions
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7
drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
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@ -391,14 +391,17 @@ struct st_lsm6dsx_hw {
const struct st_lsm6dsx_settings *settings;
};
static const struct iio_event_spec st_lsm6dsx_event = {
static __maybe_unused const struct iio_event_spec st_lsm6dsx_event = {
.type = IIO_EV_TYPE_THRESH,
.dir = IIO_EV_DIR_EITHER,
.mask_separate = BIT(IIO_EV_INFO_VALUE) |
BIT(IIO_EV_INFO_ENABLE)
};
static const unsigned long st_lsm6dsx_available_scan_masks[] = {0x7, 0x0};
static __maybe_unused const unsigned long st_lsm6dsx_available_scan_masks[] = {
0x7, 0x0,
};
extern const struct dev_pm_ops st_lsm6dsx_pm_ops;
int st_lsm6dsx_probe(struct device *dev, int irq, int hw_id,