[PATCH 2/7] Add serio start() and stop() methods

[Dmitry Torokhov <dtor_core@ameritech.net>]

===================================================================


ChangeSet@1.1986, 2004-11-11 23:04:12-05:00, dtor_core@ameritech.net
  Input: add serio->start() and serio->stop() callback methods that
         are called whenever serio port is finishes being registered
         or unregistered. The callbacks are useful for drivers that
         share interrupt between several ports and there is a danger
         that interrupt handler will reference port that was just
         unregistered.
  
  Signed-off-by: Dmitry Torokhov <dtor@mail.ru>


 drivers/input/serio/serio.c |    8 +++++++-
 include/linux/serio.h       |    2 ++
 2 files changed, 9 insertions(+), 1 deletion(-)


===================================================================



diff -Nru a/drivers/input/serio/serio.c b/drivers/input/serio/serio.c
--- a/drivers/input/serio/serio.c	2004-11-12 01:00:20 -05:00
+++ b/drivers/input/serio/serio.c	2004-11-12 01:00:20 -05:00
@@ -328,7 +328,10 @@
 	serio->dev.release = serio_release_port;
 	if (serio->parent)
 		serio->dev.parent = &serio->parent->dev;
-	device_register(&serio->dev);
+	device_initialize(&serio->dev);
+	if (serio->start)
+		serio->start(serio);
+	device_add(&serio->dev);
 }
 
 /*
@@ -350,6 +353,9 @@
 		up_write(&serio_bus.subsys.rwsem);
 		put_driver(&drv->driver);
 	}
+
+	if (serio->stop)
+		serio->stop(serio);
 
 	if (serio->parent) {
 		spin_lock_irqsave(&serio->parent->lock, flags);
diff -Nru a/include/linux/serio.h b/include/linux/serio.h
--- a/include/linux/serio.h	2004-11-12 01:00:20 -05:00
+++ b/include/linux/serio.h	2004-11-12 01:00:20 -05:00
@@ -42,6 +42,8 @@
 	int (*write)(struct serio *, unsigned char);
 	int (*open)(struct serio *);
 	void (*close)(struct serio *);
+	int (*start)(struct serio *);
+	void (*stop)(struct serio *);
 
 	struct serio *parent, *child;