diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 28194014f8..9cbc59665f 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -1195,7 +1195,8 @@ static void pc_superio_init(ISABus *isa_bus, bool create_fdctrl,
     port92 = isa_create_simple(isa_bus, TYPE_PORT92);
 
     a20_line = qemu_allocate_irqs(handle_a20_line_change, first_cpu, 2);
-    i8042_setup_a20_line(i8042, a20_line[0]);
+    qdev_connect_gpio_out_named(DEVICE(i8042),
+                                I8042_A20_LINE, 0, a20_line[0]);
     qdev_connect_gpio_out_named(DEVICE(port92),
                                 PORT92_A20_LINE, 0, a20_line[1]);
     g_free(a20_line);
diff --git a/hw/input/pckbd.c b/hw/input/pckbd.c
index 90a4d9eb40..74f10b640f 100644
--- a/hw/input/pckbd.c
+++ b/hw/input/pckbd.c
@@ -777,11 +777,6 @@ void i8042_isa_mouse_fake_event(ISAKBDState *isa)
     ps2_mouse_fake_event(&s->ps2mouse);
 }
 
-void i8042_setup_a20_line(ISADevice *dev, qemu_irq a20_out)
-{
-    qdev_connect_gpio_out_named(DEVICE(dev), I8042_A20_LINE, 0, a20_out);
-}
-
 static const VMStateDescription vmstate_kbd_isa = {
     .name = "pckbd",
     .version_id = 3,
diff --git a/include/hw/input/i8042.h b/include/hw/input/i8042.h
index 9fb3f8d787..e90f008b66 100644
--- a/include/hw/input/i8042.h
+++ b/include/hw/input/i8042.h
@@ -89,7 +89,6 @@ struct MMIOKBDState {
 
 
 void i8042_isa_mouse_fake_event(ISAKBDState *isa);
-void i8042_setup_a20_line(ISADevice *dev, qemu_irq a20_out);
 
 static inline bool i8042_present(void)
 {