diff --git a/target/linux/realtek/files-6.6/arch/mips/rtl838x/prom.c b/target/linux/realtek/files-6.6/arch/mips/rtl838x/prom.c
index 04529872475..f98fb5e93f4 100644
--- a/target/linux/realtek/files-6.6/arch/mips/rtl838x/prom.c
+++ b/target/linux/realtek/files-6.6/arch/mips/rtl838x/prom.c
@@ -19,6 +19,7 @@
 #include <asm/page.h>
 #include <asm/cpu.h>
 #include <asm/fw/fw.h>
+#include <asm/prom.h>
 #include <asm/smp-ops.h>
 #include <asm/mips-cps.h>
 
@@ -95,7 +96,7 @@ void __init device_tree_init(void)
 	register_up_smp_ops();
 }
 
-void __init identify_rtl9302(void)
+static void __init identify_rtl9302(void)
 {
 	switch (sw_r32(RTL93XX_MODEL_NAME_INFO) & 0xfffffff0) {
 	case 0x93020810:
diff --git a/target/linux/realtek/files-6.6/arch/mips/rtl838x/setup.c b/target/linux/realtek/files-6.6/arch/mips/rtl838x/setup.c
index 546b2fa2f81..73d689058e7 100644
--- a/target/linux/realtek/files-6.6/arch/mips/rtl838x/setup.c
+++ b/target/linux/realtek/files-6.6/arch/mips/rtl838x/setup.c
@@ -46,7 +46,7 @@ void __init plat_mem_setup(void)
 	__dt_setup_arch(dtb);
 }
 
-void plat_time_init_fallback(void)
+static void plat_time_init_fallback(void)
 {
 	struct device_node *np;
 	u32 freq = 500000000;