USB: suspend/resume for opticon driver

this does the standard support for suspend/resume for the opticon
driver.

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 26 insertions, 0 deletions

diff --git a/drivers/usb/serial/opticon.c b/drivers/usb/serial/opticon.c
index cea326f1f105..00d5c60adeda 100644
--- a/drivers/usb/serial/opticon.c
+++ b/drivers/usb/serial/opticon.c
@@ -306,11 +306,37 @@ static void opticon_shutdown(struct usb_serial *serial)
         usb_set_serial_data(serial, NULL);
 }
 
+static int opticon_suspend(struct usb_interface *intf, pm_message_t message)
+{
+        struct usb_serial *serial = usb_get_intfdata(intf);
+        struct opticon_private *priv = usb_get_serial_data(serial);
+
+        usb_kill_urb(priv->bulk_read_urb);
+        return 0;
+}
+
+static int opticon_resume(struct usb_interface *intf)
+{
+        struct usb_serial *serial = usb_get_intfdata(intf);
+        struct opticon_private *priv = usb_get_serial_data(serial);
+        struct usb_serial_port *port = serial->port[0];
+        int result;
+
+        mutex_lock(&port->mutex);
+        if (port->port.count)
+                result = usb_submit_urb(priv->bulk_read_urb, GFP_NOIO);
+        else
+                result = 0;
+        mutex_unlock(&port->mutex);
+        return result;
+}
 
 static struct usb_driver opticon_driver = {
         .name =         "opticon",
         .probe =        usb_serial_probe,
         .disconnect =   usb_serial_disconnect,
+        .suspend =      opticon_suspend,
+        .resume =       opticon_resume,
         .id_table =     id_table,
         .no_dynamic_id =        1,
 };