diff --git a/drivers/serial/dz.c b/drivers/serial/dz.c
index 116211fcd36fc196ff12de4aeb36ee8e6194031f..0dddd68b20d27de2dd4e5a8802e4931e954f493b 100644
--- a/drivers/serial/dz.c
+++ b/drivers/serial/dz.c
@@ -819,7 +819,7 @@ static void dz_console_putchar(struct uart_port *uport, int ch)
 		dz_out(dport, DZ_TCR, mask);
 		iob();
 		udelay(2);
-	} while (loops--);
+	} while (--loops);
 
 	if (loops)				/* Cannot send otherwise. */
 		dz_out(dport, DZ_TDR, ch);