diff --git a/drivers/serial/serial_cadence.c b/drivers/serial/serial_cadence.c
index 0501c40..6454888 100644
--- a/drivers/serial/serial_cadence.c
+++ b/drivers/serial/serial_cadence.c
@@ -199,7 +199,7 @@
 					struct cadence_serial_priv, cdev);
 
 	while ((readl(priv->regs + CADENCE_UART_CHANNEL_STS) &
-		CADENCE_STS_TEMPTY) != 0)
+		CADENCE_STS_TEMPTY) == 0)
 		;
 }