diff --git a/include/linux/signal.h b/include/linux/signal.h
index 706a499d1eb1d36f4afa33f4286c41f80e2601e3..200ed96a05afea6b72781960fd11e2f4a0b62217 100644
--- a/include/linux/signal.h
+++ b/include/linux/signal.h
@@ -40,7 +40,7 @@ enum siginfo_layout {
 	SIL_SYS,
 };
 
-enum siginfo_layout siginfo_layout(int sig, int si_code);
+enum siginfo_layout siginfo_layout(unsigned sig, int si_code);
 
 /*
  * Define some primitives to manipulate sigset_t.
diff --git a/kernel/signal.c b/kernel/signal.c
index 5f5bf374512b889ad360e2e0d59a061edca818ed..4fd431ce4f91e101f3d75d83cf9284407157d16a 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -2879,7 +2879,7 @@ static bool known_siginfo_layout(unsigned sig, int si_code)
 	return false;
 }
 
-enum siginfo_layout siginfo_layout(int sig, int si_code)
+enum siginfo_layout siginfo_layout(unsigned sig, int si_code)
 {
 	enum siginfo_layout layout = SIL_KILL;
 	if ((si_code > SI_USER) && (si_code < SI_KERNEL)) {