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Blackfin Serial Driver: Fix bug - Don't call tx_stop in tx_transfer.
author
Sonic Zhang
<sonic.zhang@analog.com>
Mon, 13 Oct 2008 09:33:33 +0000
(10:33 +0100)
committer
Linus Torvalds
<torvalds@linux-foundation.org>
Mon, 13 Oct 2008 16:51:38 +0000
(09:51 -0700)
Disable irq and return immediately.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
drivers/serial/bfin_5xx.c
patch
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diff --git
a/drivers/serial/bfin_5xx.c
b/drivers/serial/bfin_5xx.c
index
8d2d757
..
5e20f50
100644
(file)
--- 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;
}