[PATCH 2/2] driver/serial: stm-serial: fix flush

[Marc Kleine-Budde]

Wait until fifo is empty, not until fifo is not full.

Signed-off-by: Marc Kleine-Budde <mkl at pengutronix.de>
---
 drivers/serial/stm-serial.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/serial/stm-serial.c b/drivers/serial/stm-serial.c
index 3968892..e1276bd 100644
--- a/drivers/serial/stm-serial.c
+++ b/drivers/serial/stm-serial.c
@@ -34,6 +34,7 @@
 
 #define UARTDBGDR 0x00
 #define UARTDBGFR 0x18
+# define TXFE (1 << 7)
 # define TXFF (1 << 5)
 # define RXFE (1 << 4)
 #define UARTDBGIBRD 0x24
@@ -92,7 +93,7 @@ static void stm_serial_flush(struct console_device *cdev)
 	struct stm_priv *priv = container_of(cdev, struct stm_priv, cdev);
 
 	/* Wait for TX FIFO empty */
-	while (readl(priv->base + UARTDBGFR) & TXFF)
+	while (!(readl(priv->base + UARTDBGFR) & TXFE))
 		;
 }
 
-- 
1.8.2.rc2