diff options
| author | Johan Hovold <johan@kernel.org> | 2017-01-06 18:15:10 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-01-19 19:18:01 (GMT) |
| commit | 4aeab97a051560835668fc5c61eb56b20bd485d0 (patch) | |
| tree | 889868befbdf4da613d69b67aca55cb1e35dd5c2 | |
| parent | 58ede4beda662c4e1681fee4fae2174028a1a841 (diff) | |
| download | linux-4aeab97a051560835668fc5c61eb56b20bd485d0.tar.xz | |
USB: serial: ch341: fix initial modem-control state
commit 4e2da44691cffbfffb1535f478d19bc2dca3e62b upstream.
DTR and RTS will be asserted by the tty-layer when the port is opened
and deasserted on close (if HUPCL is set). Make sure the initial state
is not-asserted before the port is first opened as well.
Fixes: 664d5df92e88 ("USB: usb-serial ch341: support for DTR/RTS/CTS")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/serial/ch341.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c index f139488..6c04c45 100644 --- a/drivers/usb/serial/ch341.c +++ b/drivers/usb/serial/ch341.c @@ -253,7 +253,6 @@ static int ch341_port_probe(struct usb_serial_port *port) spin_lock_init(&priv->lock); priv->baud_rate = DEFAULT_BAUD_RATE; - priv->line_control = CH341_BIT_RTS | CH341_BIT_DTR; r = ch341_configure(port->serial->dev, priv); if (r < 0) |