iio: Add missing include guards to headers

Add include guards to the IIO headers where they are missing. This avoids
compile errors due to redefined types if a file is included more than once.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/include/linux/iio/machine.h b/include/linux/iio/machine.h
index 400a453ff67b..809a3f08d5a5 100644
--- a/include/linux/iio/machine.h
+++ b/include/linux/iio/machine.h
@@ -8,6 +8,9 @@
  * the Free Software Foundation.
  */
 
+#ifndef __LINUX_IIO_MACHINE_H__
+#define __LINUX_IIO_MACHINE_H__
+
 /**
  * struct iio_map - description of link between consumer and device channels
  * @adc_channel_label:  Label used to identify the channel on the provider.
@@ -22,3 +25,5 @@ struct iio_map {
         const char *consumer_dev_name;
         const char *consumer_channel;
 };
+
+#endif