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authorSonic Zhang <sonic.zhang@analog.com>2008-10-13 10:33:33 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-13 09:51:38 -0700
commit5ffdeea2f99ed9d46bf954c9fdc64da7da57e81b (patch)
tree81ef34ea8bc7cefb8b5ef540ca53897b0dc3a91a /drivers/serial
parent08668ab7c2ca9bed281eb6763e5a8e15384b7fdc (diff)
downloadop-kernel-dev-5ffdeea2f99ed9d46bf954c9fdc64da7da57e81b.zip
op-kernel-dev-5ffdeea2f99ed9d46bf954c9fdc64da7da57e81b.tar.gz
Blackfin Serial Driver: Fix bug - Don't call tx_stop in tx_transfer.
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>
Diffstat (limited to 'drivers/serial')
-rw-r--r--drivers/serial/bfin_5xx.c6
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;
}
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