diff options
| author | Johan Hovold <jhovold@gmail.com> | 2013-06-10 18:29:39 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-06-20 12:01:38 -0700 |
| commit | 70b6bf5ba36ef71e7301553ee79f718380a546a7 (patch) | |
| tree | 8d59110b95181654209fb4615a582ccd5150f03a | |
| parent | 4f0856222860481ce20b248cdd824dce7c995d74 (diff) | |
USB: spcp8x5: fix device initialisation at open
commit 5e4211f1c47560c36a8b3d4544dfd866dcf7ccd0 upstream.
Do not use uninitialised termios data to determine when to configure the
device at open.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/serial/spcp8x5.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/usb/serial/spcp8x5.c b/drivers/usb/serial/spcp8x5.c index 549ef68ff5fa..6607379febce 100644 --- a/drivers/usb/serial/spcp8x5.c +++ b/drivers/usb/serial/spcp8x5.c @@ -314,7 +314,6 @@ static void spcp8x5_set_termios(struct tty_struct *tty, struct spcp8x5_private *priv = usb_get_serial_port_data(port); unsigned long flags; unsigned int cflag = tty->termios.c_cflag; - unsigned int old_cflag = old_termios->c_cflag; unsigned short uartdata; unsigned char buf[2] = {0, 0}; int baud; @@ -323,15 +322,15 @@ static void spcp8x5_set_termios(struct tty_struct *tty, /* check that they really want us to change something */ - if (!tty_termios_hw_change(&tty->termios, old_termios)) + if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios)) return; /* set DTR/RTS active */ spin_lock_irqsave(&priv->lock, flags); control = priv->line_control; - if ((old_cflag & CBAUD) == B0) { + if (old_termios && (old_termios->c_cflag & CBAUD) == B0) { priv->line_control |= MCR_DTR; - if (!(old_cflag & CRTSCTS)) + if (!(old_termios->c_cflag & CRTSCTS)) priv->line_control |= MCR_RTS; } if (control != priv->line_control) { @@ -421,7 +420,6 @@ static void spcp8x5_set_termios(struct tty_struct *tty, * status of the device. */ static int spcp8x5_open(struct tty_struct *tty, struct usb_serial_port *port) { - struct ktermios tmp_termios; struct usb_serial *serial = port->serial; struct spcp8x5_private *priv = usb_get_serial_port_data(port); int ret; @@ -442,7 +440,7 @@ static int spcp8x5_open(struct tty_struct *tty, struct usb_serial_port *port) /* Setup termios */ if (tty) - spcp8x5_set_termios(tty, port, &tmp_termios); + spcp8x5_set_termios(tty, port, NULL); spcp8x5_get_msr(serial->dev, &status, priv->type); |