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-rw-r--r--hw/empty_slot.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/hw/empty_slot.h b/hw/empty_slot.h
index 4e9e460..6079602 100644
--- a/hw/empty_slot.h
+++ b/hw/empty_slot.h
@@ -1,2 +1,7 @@
+#ifndef HW_EMPTY_SLOT_H
+#define HW_EMPTY_SLOT_H 1
+
/* empty_slot.c */
void empty_slot_init(hwaddr addr, uint64_t slot_size);
+
+#endif