[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>

drivers/usb/serial/cyberjack.c

@@ -469,7 +469,7 @@ static void cyberjack_write_bulk_callback (struct urb *urb, struct pt_regs *regs
 
 exit:
 	spin_unlock(&priv->lock);
-	schedule_work(&port->work);
+	usb_serial_port_softint(port);
 }
 
 static int __init cyberjack_init (void)

drivers/usb/serial/cypress_m8.c

@@ -824,7 +824,7 @@ static void cypress_send(struct usb_serial_port *port)
 	priv->bytes_out += count; /* do not count the line control and size bytes */
 	spin_unlock_irqrestore(&priv->lock, flags);
 
-	schedule_work(&port->work);
+	usb_serial_port_softint(port);
 } /* cypress_send */
 
 

drivers/usb/serial/empeg.c

@@ -335,7 +335,7 @@ static void empeg_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
 		return;
 	}
 
-	schedule_work(&port->work);
+	usb_serial_port_softint(port);
 }
 
 

drivers/usb/serial/ftdi_sio.c

@@ -1472,7 +1472,7 @@ static void ftdi_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
 		return;
 	}
 
-	schedule_work(&port->work);
+	usb_serial_port_softint(port);
 } /* ftdi_write_bulk_callback */
 
 

drivers/usb/serial/garmin_gps.c

@@ -1012,7 +1012,7 @@ static void garmin_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
 		garmin_data_p->flags |= CLEAR_HALT_REQUIRED;
 	}
 
-	schedule_work(&port->work);
+	usb_serial_port_softint(port);
 }
 
 

drivers/usb/serial/generic.c

@@ -299,9 +299,7 @@ void usb_serial_generic_write_bulk_callback (struct urb *urb, struct pt_regs *re
 		return;
 	}
 
-	usb_serial_port_softint((void *)port);
-
-	schedule_work(&port->work);
+	usb_serial_port_softint(port);
 }
 EXPORT_SYMBOL_GPL(usb_serial_generic_write_bulk_callback);
 

drivers/usb/serial/ipaq.c

@@ -870,7 +870,7 @@ static void ipaq_write_bulk_callback(struct urb *urb, struct pt_regs *regs)
 		spin_unlock_irqrestore(&write_list_lock, flags);
 	}
 
-	schedule_work(&port->work);
+	usb_serial_port_softint(port);
 }
 
 static int ipaq_write_room(struct usb_serial_port *port)

drivers/usb/serial/ipw.c

@@ -376,7 +376,7 @@ static void ipw_write_bulk_callback(struct urb *urb, struct pt_regs *regs)
 	if (urb->status)
 		dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status);
 
-	schedule_work(&port->work);
+	usb_serial_port_softint(port);
 }
 
 static int ipw_write(struct usb_serial_port *port, const unsigned char *buf, int count)

drivers/usb/serial/ir-usb.c

@@ -408,7 +408,7 @@ static void ir_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
 		urb->actual_length,
 		urb->transfer_buffer);
 
-	schedule_work(&port->work);
+	usb_serial_port_softint(port);
 }
 
 static void ir_read_bulk_callback (struct urb *urb, struct pt_regs *regs)

drivers/usb/serial/keyspan.c

@@ -481,7 +481,7 @@ static void	usa2x_outdat_callback(struct urb *urb, struct pt_regs *regs)
 	dbg ("%s - urb %d", __FUNCTION__, urb == p_priv->out_urbs[1]); 
 
 	if (port->open_count)
-		schedule_work(&port->work);
+		usb_serial_port_softint(port);
 }
 
 static void	usa26_inack_callback(struct urb *urb, struct pt_regs *regs)

drivers/usb/serial/kl5kusb105.c

@@ -569,8 +569,7 @@ static void klsi_105_write_bulk_callback ( struct urb *urb, struct pt_regs *regs
 		return;
 	}
 
-	/* from generic_write_bulk_callback */
-	schedule_work(&port->work);
+	usb_serial_port_softint(port);
 } /* klsi_105_write_bulk_completion_callback */
 
 

drivers/usb/serial/omninet.c

@@ -320,7 +320,7 @@ static void omninet_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
 		return;
 	}
 
-	schedule_work(&port->work);
+	usb_serial_port_softint(port);
 }
 
 

drivers/usb/serial/option.c

@@ -365,8 +365,7 @@ static void option_outdat_callback(struct urb *urb, struct pt_regs *regs)
 
 	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)

drivers/usb/serial/pl2303.c

@@ -314,7 +314,7 @@ static void pl2303_send(struct usb_serial_port *port)
 		// TODO: reschedule pl2303_send
 	}
 
-	schedule_work(&port->work);
+	usb_serial_port_softint(port);
 }
 
 static int pl2303_write_room(struct usb_serial_port *port)

drivers/usb/serial/usb-serial.c

@@ -531,7 +531,17 @@ static int serial_tiocmset (struct tty_struct *tty, struct file *file,
 	return -EINVAL;
 }
 
-void usb_serial_port_softint(void *private)
+/*
+ * We would be calling tty_wakeup here, but unfortunately some line
+ * disciplines have an annoying habit of calling tty->write from
+ * the write wakeup callback (e.g. n_hdlc.c).
+ */
+void usb_serial_port_softint(struct usb_serial_port *port)
+{
+	schedule_work(&port->work);
+}
+
+static void usb_serial_port_work(void *private)
 {
 	struct usb_serial_port *port = private;
 	struct tty_struct *tty;
@@ -794,7 +804,7 @@ int usb_serial_probe(struct usb_interface *interface,
 		port->serial = serial;
 		spin_lock_init(&port->lock);
 		mutex_init(&port->mutex);
-		INIT_WORK(&port->work, usb_serial_port_softint, port);
+		INIT_WORK(&port->work, usb_serial_port_work, port);
 		serial->port[i] = port;
 	}
 

drivers/usb/serial/usb-serial.h

@@ -236,7 +236,7 @@ struct usb_serial_driver {
 
 extern int  usb_serial_register(struct usb_serial_driver *driver);
 extern void usb_serial_deregister(struct usb_serial_driver *driver);
-extern void usb_serial_port_softint(void *private);
+extern void usb_serial_port_softint(struct usb_serial_port *port);
 
 extern int usb_serial_probe(struct usb_interface *iface, const struct usb_device_id *id);
 extern void usb_serial_disconnect(struct usb_interface *iface);

drivers/usb/serial/visor.c

@@ -480,7 +480,7 @@ static void visor_write_bulk_callback (struct urb *urb, struct pt_regs *regs)
 	--priv->outstanding_urbs;
 	spin_unlock_irqrestore(&priv->lock, flags);
 
-	schedule_work(&port->work);
+	usb_serial_port_softint(port);
 }
 
 

drivers/usb/serial/whiteheat.c

@@ -1089,9 +1089,7 @@ static void whiteheat_write_callback(struct urb *urb, struct pt_regs *regs)
 		return;
 	}
 
-	usb_serial_port_softint((void *)port);
-
-	schedule_work(&port->work);
+	usb_serial_port_softint(port);
 }