struct serio_device_id id;
- spinlock_t lock; /* protects critical sections from port's interrupt handler */
+ /* Protects critical sections from port's interrupt handler */
+ spinlock_t lock;
int (*write)(struct serio *, unsigned char);
int (*open)(struct serio *);
void (*stop)(struct serio *);
struct serio *parent;
- struct list_head child_node; /* Entry in parent->children list */
+ /* Entry in parent->children list */
+ struct list_head child_node;
struct list_head children;
- unsigned int depth; /* level of nesting in serio hierarchy */
+ /* Level of nesting in serio hierarchy */
+ unsigned int depth;
- struct serio_driver *drv; /* accessed from interrupt, must be protected by serio->lock and serio->sem */
- struct mutex drv_mutex; /* protects serio->drv so attributes can pin driver */
+ /*
+ * serio->drv is accessed from interrupt handlers; when modifying
+ * caller should acquire serio->drv_mutex and serio->lock.
+ */
+ struct serio_driver *drv;
+ /* Protects serio->drv so attributes can pin current driver */
+ struct mutex drv_mutex;
struct device dev;
struct list_head node;
+
+ /*
+ * For use by PS/2 layer when several ports share hardware and
+ * may get indigestion when exposed to concurrent access (i8042).
+ */
+ struct mutex *ps2_cmd_mutex;
};
#define to_serio_port(d) container_of(d, struct serio, dev)
irqreturn_t serio_interrupt(struct serio *serio, unsigned char data, unsigned int flags);
void __serio_register_port(struct serio *serio, struct module *owner);
-static inline void serio_register_port(struct serio *serio)
-{
- __serio_register_port(serio, THIS_MODULE);
-}
+
+/* use a define to avoid include chaining to get THIS_MODULE */
+#define serio_register_port(serio) \
+ __serio_register_port(serio, THIS_MODULE)
void serio_unregister_port(struct serio *serio);
void serio_unregister_child_port(struct serio *serio);
-int __serio_register_driver(struct serio_driver *drv, struct module *owner, const char *mod_name);
-static inline int __must_check serio_register_driver(struct serio_driver *drv)
-{
- return __serio_register_driver(drv, THIS_MODULE, KBUILD_MODNAME);
-}
+int __must_check __serio_register_driver(struct serio_driver *drv,
+ struct module *owner, const char *mod_name);
+
+/* use a define to avoid include chaining to get THIS_MODULE & friends */
+#define serio_register_driver(drv) \
+ __serio_register_driver(drv, THIS_MODULE, KBUILD_MODNAME)
+
void serio_unregister_driver(struct serio_driver *drv);
static inline int serio_write(struct serio *serio, unsigned char data)