diff --git a/arch/powerpc/include/asm/mem_encrypt.h b/arch/powerpc/include/asm/mem_encrypt.h
index 2f26b8fc8d29..e355ca46fad9 100644
--- a/arch/powerpc/include/asm/mem_encrypt.h
+++ b/arch/powerpc/include/asm/mem_encrypt.h
@@ -9,6 +9,9 @@
 #define _ASM_POWERPC_MEM_ENCRYPT_H
 
 #include <asm/svm.h>
+#include <linux/types.h>
+
+struct device;
 
 static inline bool force_dma_unencrypted(struct device *dev)
 {