[ 28/68] USB: pl2303: fix DTR/RTS being raised on baud rate change

[Greg KH]

3.2-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Johan Hovold <jhovold@xxxxxxxxx>

commit ce5c9851855bab190c9a142761d54ba583ab094c upstream.

DTR/RTS should only be raised when changing baudrate from B0 and not on
any baud rate change (> B0).

Reported-by: Søren Holm <sgh@xxxxxx>
Signed-off-by: Johan Hovold <jhovold@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/usb/serial/pl2303.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -421,7 +421,7 @@ static void pl2303_set_termios(struct tt
 	control = priv->line_control;
 	if ((cflag & CBAUD) == B0)
 		priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS);
-	else
+	else if ((old_termios->c_cflag & CBAUD) == B0)
 		priv->line_control |= (CONTROL_DTR | CONTROL_RTS);
 	if (control != priv->line_control) {
 		control = priv->line_control;


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