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-rw-r--r--include/linux/timeriomem-rng.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/timeriomem-rng.h b/include/linux/timeriomem-rng.h
index fd4a6e6ec831..672df7fbf6c1 100644
--- a/include/linux/timeriomem-rng.h
+++ b/include/linux/timeriomem-rng.h
@@ -5,6 +5,9 @@
* Copyright (c) 2009 Alexander Clouter <alex@digriz.org.uk>
*/
+#ifndef _LINUX_TIMERIOMEM_RNG_H
+#define _LINUX_TIMERIOMEM_RNG_H
+
struct timeriomem_rng_data {
void __iomem *address;
@@ -14,3 +17,5 @@ struct timeriomem_rng_data {
/* bits of entropy per 1024 bits read */
unsigned int quality;
};
+
+#endif /* _LINUX_TIMERIOMEM_RNG_H */