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-rw-r--r--include/linux/dio.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/dio.h b/include/linux/dio.h
index 5abd07361eb516..2b5923909f9633 100644
--- a/include/linux/dio.h
+++ b/include/linux/dio.h
@@ -68,7 +68,7 @@ struct dio_bus {
};
extern struct dio_bus dio_bus; /* Single DIO bus */
-extern struct bus_type dio_bus_type;
+extern const struct bus_type dio_bus_type;
/*
* DIO device IDs