提交 0cbd81a9 编写于 作者: J Johan Hovold 提交者: Greg Kroah-Hartman

USB: ftdi_sio: remove tty->low_latency

Fixes tty_flip_buffer_push being called from hard interrupt context with
low_latency set.
Signed-off-by: NJohan Hovold <jhovold@gmail.com>
Cc: stable <stable@kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
上级 36a07902
......@@ -1234,7 +1234,6 @@ static int set_serial_info(struct tty_struct *tty,
(new_serial.flags & ASYNC_FLAGS));
priv->custom_divisor = new_serial.custom_divisor;
tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
write_latency_timer(port);
check_and_exit:
......@@ -1704,9 +1703,6 @@ static int ftdi_open(struct tty_struct *tty, struct usb_serial_port *port)
priv->rx_bytes = 0;
spin_unlock_irqrestore(&priv->rx_lock, flags);
if (tty)
tty->low_latency = (priv->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
write_latency_timer(port);
/* No error checking for this (will get errors later anyway) */
......
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