USB: option.c: correct DTR behaviour
Setting DTR et al. should work for all interfaces
if you actually pass the interface number. :-P
This should help with devices that have important pseudo-serial ports
that aren't on the first interface in the device.
Signed-off-by: Chris Collins <chris@ursys.com.au>
Signed-off-by: Matthias Urlichs <matthias@urlichs.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index 0e7eeb2..130aa96 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -28,7 +28,7 @@
device features.
*/
-#define DRIVER_VERSION "v0.7.1"
+#define DRIVER_VERSION "v0.7.2"
#define DRIVER_AUTHOR "Matthias Urlichs <smurf@smurf.noris.de>"
#define DRIVER_DESC "USB Driver for GSM modems"
@@ -824,16 +824,19 @@
}
}
+
+/** send RTS/DTR state to the port.
+ *
+ * This is exactly the same as SET_CONTROL_LINE_STATE from the PSTN
+ * CDC.
+*/
static int option_send_setup(struct usb_serial_port *port)
{
struct usb_serial *serial = port->serial;
struct option_port_private *portdata;
-
+ int ifNum = serial->interface->cur_altsetting->desc.bInterfaceNumber;
dbg("%s", __FUNCTION__);
- if (port->number != 0)
- return 0;
-
portdata = usb_get_serial_port_data(port);
if (port->tty) {
@@ -845,7 +848,7 @@
return usb_control_msg(serial->dev,
usb_rcvctrlpipe(serial->dev, 0),
- 0x22,0x21,val,0,NULL,0,USB_CTRL_SET_TIMEOUT);
+ 0x22,0x21,val,ifNum,NULL,0,USB_CTRL_SET_TIMEOUT);
}
return 0;