[PATCH 10/27] Blackfin Serial Driver: Fix bug - Don't call tx_stop in tx_transfer.
From: Alan Cox <hidden>
Date: 2008-10-10 10:50:25
Also in:
lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
From: Sonic Zhang <redacted> Disable irq and return immediately. Signed-off-by: Sonic Zhang <redacted> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Alan Cox <redacted> --- drivers/serial/bfin_5xx.c | 6 +++++- 1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/drivers/serial/bfin_5xx.c b/drivers/serial/bfin_5xx.c
index 8d2d757..5e20f50 100644
--- a/drivers/serial/bfin_5xx.c
+++ b/drivers/serial/bfin_5xx.c@@ -301,7 +301,11 @@ static void bfin_serial_tx_chars(struct bfin_serial_port *uart) bfin_serial_mctrl_check(uart); if (uart_circ_empty(xmit) || uart_tx_stopped(&uart->port)) { - bfin_serial_stop_tx(&uart->port); +#ifdef CONFIG_BF54x + /* Clear TFI bit */ + UART_PUT_LSR(uart, TFI); +#endif + UART_CLEAR_IER(uart, ETBEI); return; }