Mercurial > hg > aboriginal
view sources/patches/linux-unbreakppc.patch @ 1690:98b3b6ff9d44 draft
Update website for 1.2.9 release.
author | Rob Landley <rob@landley.net> |
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date | Thu, 25 Sep 2014 23:10:11 -0500 |
parents | e495d01ad5b3 |
children |
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Reverse a commit that completely broke powerpc serial output. commit 717f3bbab3c7628736ef738fdbf3d9a28578c26c Author: Seth Bollinger <sethb@digi.com> Date: Tue Mar 25 12:55:37 2014 -0500 serial_core: Fix conditional start_tx on ring buffer not empty If the serial_core ring buffer empties just as the tty layer receives an XOFF, then start_tx will never be called when the tty layer receives an XON as the serial_core ring buffer is empty. This will possibly leave a few bytes trapped in the fifo for drivers that disable the transmitter when flow controlled. Signed-off-by: Seth Bollinger <sethb@digi.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index 2cf5649..dd1a7be 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -89,7 +89,8 @@ static void __uart_start(struct tty_struct *tty) struct uart_state *state = tty->driver_data; struct uart_port *port = state->uart_port; - if (!tty->stopped && !tty->hw_stopped) + if (!uart_circ_empty(&state->xmit) && state->xmit.buf && + !tty->stopped && !tty->hw_stopped) port->ops->start_tx(port); }