Commit b6271a1f authored by Greg Kroah-Hartman's avatar Greg Kroah-Hartman

[PATCH] USB: pl2303: add ability to report CTS and DSR status to userspace

parent 3eb9b80d
......@@ -537,16 +537,20 @@ static int pl2303_tiocmget (struct usb_serial_port *port, struct file *file)
struct pl2303_private *priv = usb_get_serial_port_data(port);
unsigned long flags;
unsigned int mcr;
unsigned int status;
unsigned int result;
dbg("%s (%d)", __FUNCTION__, port->number);
spin_lock_irqsave (&priv->lock, flags);
mcr = priv->line_control;
status = priv->line_status;
spin_unlock_irqrestore (&priv->lock, flags);
result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0)
| ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0);
| ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0)
| ((status & UART_CTS) ? TIOCM_CTS : 0)
| ((status & UART_DSR) ? TIOCM_DSR : 0);
dbg("%s - result = %x", __FUNCTION__, result);
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment