Blackfin Serial Driver: Fix bug - kernel hangs when accessing uart 0 on bf537 when booting u-boot and linux on uart 1

Wait only when this UART is enabled.
http://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_item_id=3995

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

1 files changed, 0 insertions, 4 deletions

diff --git a/drivers/serial/bfin_5xx.c b/drivers/serial/bfin_5xx.c
index b773764ddab9..1dc9b583fa62 100644
--- a/drivers/serial/bfin_5xx.c
+++ b/drivers/serial/bfin_5xx.c
@@ -806,10 +806,6 @@ bfin_serial_set_termios(struct uart_port *port, struct ktermios *termios,
 
         UART_SET_ANOMALY_THRESHOLD(uart, USEC_PER_SEC / baud * 15);
 
-        do {
-                lsr = UART_GET_LSR(uart);
-        } while (!(lsr & TEMT));
-
         /* Disable UART */
         ier = UART_GET_IER(uart);
 #ifdef CONFIG_BF54x