diff --git a/arch/sh/cpu/sh4/cpu.c b/arch/sh/cpu/sh4/cpu.c
index 801102f..1b2f50d 100644
--- a/arch/sh/cpu/sh4/cpu.c
+++ b/arch/sh/cpu/sh4/cpu.c
@@ -32,7 +32,7 @@
 int do_reset(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 {
 	disable_interrupts();
-	reset_cpu(0);
+	reset_cpu();
 	return 0;
 }
 
diff --git a/arch/sh/cpu/sh4/watchdog.c b/arch/sh/cpu/sh4/watchdog.c
index 1de32cd..bf403d3 100644
--- a/arch/sh/cpu/sh4/watchdog.c
+++ b/arch/sh/cpu/sh4/watchdog.c
@@ -51,7 +51,7 @@
 }
 #endif
 
-void reset_cpu(unsigned long ignored)
+void reset_cpu(void)
 {
 	/* Address error with SR.BL=1 first. */
 	trigger_address_error();