1 files changed, 1 insertions, 1 deletions
diff --git a/ioport.h b/ioport.h
index 5ae62a3a2..82ffd9d81 100644
--- a/ioport.h
+++ b/ioport.h
@@ -43,7 +43,7 @@ int register_ioport_read(pio_addr_t start, int length, int size,
 int register_ioport_write(pio_addr_t start, int length, int size,
                           IOPortWriteFunc *func, void *opaque);
 void isa_unassign_ioport(pio_addr_t start, int length);
-
+bool isa_is_ioport_assigned(pio_addr_t start);
 
 void cpu_outb(pio_addr_t addr, uint8_t val);
 void cpu_outw(pio_addr_t addr, uint16_t val);