Input: serio - support multiple child devices per single parent
Some (rare) serio devices need to have multiple serio children. One of
the examples is PS/2 multiplexer present on several TQC STKxxx boards,
which connect PS/2 keyboard and mouse to single tty port.
Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/include/linux/serio.h b/include/linux/serio.h
index 111ad50..109b237 100644
--- a/include/linux/serio.h
+++ b/include/linux/serio.h
@@ -41,7 +41,9 @@
int (*start)(struct serio *);
void (*stop)(struct serio *);
- struct serio *parent, *child;
+ struct serio *parent;
+ struct list_head child_node; /* Entry in parent->children list */
+ struct list_head children;
unsigned int depth; /* level of nesting in serio hierarchy */
struct serio_driver *drv; /* accessed from interrupt, must be protected by serio->lock and serio->sem */