--- /dev/null
+From ddd068d81445b17ac0bed084dfeb9e58b4df3ddd Mon Sep 17 00:00:00 2001
+From: WangYuli <wangyuli@uniontech.com>
+Date: Sat, 4 Jan 2025 22:47:08 +0800
+Subject: MIPS: ftrace: Declare ftrace_get_parent_ra_addr() as static
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+From: WangYuli <wangyuli@uniontech.com>
+
+commit ddd068d81445b17ac0bed084dfeb9e58b4df3ddd upstream.
+
+Declare ftrace_get_parent_ra_addr() as static to suppress clang
+compiler warning that 'no previous prototype'. This function is
+not intended to be called from other parts.
+
+Fix follow error with clang-19:
+
+arch/mips/kernel/ftrace.c:251:15: error: no previous prototype for function 'ftrace_get_parent_ra_addr' [-Werror,-Wmissing-prototypes]
+ 251 | unsigned long ftrace_get_parent_ra_addr(unsigned long self_ra, unsigned long
+ | ^
+arch/mips/kernel/ftrace.c:251:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
+ 251 | unsigned long ftrace_get_parent_ra_addr(unsigned long self_ra, unsigned long
+ | ^
+ | static
+1 error generated.
+
+Signed-off-by: WangYuli <wangyuli@uniontech.com>
+Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
+Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
+Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ arch/mips/kernel/ftrace.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/arch/mips/kernel/ftrace.c
++++ b/arch/mips/kernel/ftrace.c
+@@ -264,7 +264,7 @@ int ftrace_disable_ftrace_graph_caller(v
+ #define S_R_SP (0xafb0 << 16) /* s{d,w} R, offset(sp) */
+ #define OFFSET_MASK 0xffff /* stack offset range: 0 ~ PT_SIZE */
+
+-unsigned long ftrace_get_parent_ra_addr(unsigned long self_ra, unsigned long
++static unsigned long ftrace_get_parent_ra_addr(unsigned long self_ra, unsigned long
+ old_parent_ra, unsigned long parent_ra_addr, unsigned long fp)
+ {
+ unsigned long sp, ip, tmp;