[Blackfin] serial driver: fix bug - should not wait for the TFI bit, just clear it when tx stop.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

1 files changed, 0 insertions, 3 deletions

diff --git a/drivers/serial/bfin_5xx.c b/drivers/serial/bfin_5xx.c
index 007414639e32..ca9ceaa113a2 100644
--- a/drivers/serial/bfin_5xx.c
+++ b/drivers/serial/bfin_5xx.c
@@ -95,9 +95,6 @@ static void bfin_serial_stop_tx(struct uart_port *port)
         disable_dma(uart->tx_dma_channel);
 #else
 #ifdef CONFIG_BF54x
-        /* Waiting for Transmission Finished */
-        while (!(UART_GET_LSR(uart) & TFI))
-                continue;
         /* Clear TFI bit */
         UART_PUT_LSR(uart, TFI);
         UART_CLEAR_IER(uart, ETBEI);