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[PATCH V2] 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>
---
 include/linux/iio/trigger.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/linux/iio/trigger.h b/include/linux/iio/trigger.h
index fa76c79..974cf73 100644
--- a/include/linux/iio/trigger.h
+++ b/include/linux/iio/trigger.h
@@ -18,6 +18,10 @@ struct iio_subirq {
 	bool enabled;
 };
 
+/* forward declaration */
+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.
-- 
2.4.3

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[PATCH V2] iio: declare struct to fix warning Pengyu Ma <pengyu.ma@windriver.com> - 2015-08-03 04:40 +0200
  Re: [PATCH V2] iio: declare struct to fix warning Pengyu Ma <pengyu.ma@windriver.com> - 2015-08-04 10:00 +0200
    Re: [PATCH V2] iio: declare struct to fix warning Lars-Peter Clausen <lars@metafoo.de> - 2015-08-04 10:00 +0200
      Re: [PATCH V2] iio: declare struct to fix warning Crt Mori <cmo@melexis.com> - 2015-08-04 10:00 +0200
      Re: [PATCH V2] iio: declare struct to fix warning Pengyu Ma <pengyu.ma@windriver.com> - 2015-08-04 10:00 +0200
        Re: [PATCH V2] iio: declare struct to fix warning Lars-Peter Clausen <lars@metafoo.de> - 2015-08-04 10:10 +0200
  Re: [PATCH V2] iio: declare struct to fix warning Daniel Baluta <daniel.baluta@gmail.com> - 2015-08-04 10:10 +0200
    Re: [PATCH V2] iio: declare struct to fix warning Pengyu Ma <pengyu.ma@windriver.com> - 2015-08-04 10:20 +0200
      Re: [PATCH V2] iio: declare struct to fix warning Daniel Baluta <daniel.baluta@gmail.com> - 2015-08-04 10:20 +0200

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