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iio: declare struct to fix warning

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When compile iio related driver the following warning shown:

include/linux/iio/trigger.h:35:34: warning: 'struct iio_trigger'
declared inside parameter list
  int (*set_trigger_state)(struct iio_trigger *trig, bool state);

include/linux/iio/trigger.h:38:18: warning: 'struct iio_dev'
declared inside parameter list
           struct iio_dev *indio_dev);

'struct iio_dev' and 'struct iio_trigger' was used before declaration,
forward declaration for these structs to fix warning.

Signed-off-by: Pengyu Ma <pengyu.ma@windriver.com>
Acked-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Pengyu Ma 2015-08-04 16:32:18 +08:00 committed by Jonathan Cameron
parent 7a9fbd250c
commit ad30bad3a5
1 changed files with 3 additions and 0 deletions
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include/linux/iio/trigger.h
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@ -18,6 +18,9 @@ struct iio_subirq {
bool enabled;
};
struct iio_dev;
struct iio_trigger;
/**
* struct iio_trigger_ops - operations structure for an iio_trigger.
* @owner: used to monitor usage count of the trigger.