[PATCH] USB serial: encapsulate schedule_work, remove double-calling

I'm going to throw schedule_work away, it's retarded. But for starters,
let's have it encapsulated.

Also, generic and whiteheat were both calling usb_serial_port_softint
and scheduled work. Only one was necessary.

Signed-off-by: Pete Zaitcev <zaitcev@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index 5cf2b80..759d360 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -365,8 +365,7 @@
 
 	port = (struct usb_serial_port *) urb->context;
 
-	if (port->open_count)
-		schedule_work(&port->work);
+	usb_serial_port_softint(port);
 }
 
 static void option_instat_callback(struct urb *urb, struct pt_regs *regs)