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authorJohan Hovold <jhovold@gmail.com>2012-03-23 15:23:18 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-04-22 15:31:01 -0700
commit582ed6e2205004cee5b59637ec25b84f0cf4812e (patch)
tree3498bff3c5642dd90fd0ffb3deae9ee5ed52677d
parent5d4047fd0968cd9ca53d0744a5ba7719c7e539bc (diff)
USB: pl2303: fix DTR/RTS being raised on baud rate change
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@sgh.dk> Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/usb/serial/pl2303.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
index fc2d66f7f4eb..5532ea5f8d75 100644
--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -421,7 +421,7 @@ static void pl2303_set_termios(struct tty_struct *tty,
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;