#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/kthread.h>
+#include <linux/sched.h> /* HZ */
/*#include <asm/io.h>*/
static LIST_HEAD(gameport_list);
-static struct bus_type gameport_bus = {
- .name = "gameport",
-};
+static struct bus_type gameport_bus;
static void gameport_add_port(struct gameport *gameport);
static void gameport_destroy_port(struct gameport *gameport);
#if defined(__i386__)
+#include <asm/i8253.h>
+
#define DELTA(x,y) ((y)-(x)+((y)<(x)?1193182/HZ:0))
#define GET_TIME(x) do { x = get_time_pit(); } while (0)
static unsigned int get_time_pit(void)
{
- extern spinlock_t i8253_lock;
unsigned long flags;
unsigned int count;
return event;
}
-static void gameport_handle_events(void)
+static void gameport_handle_event(void)
{
struct gameport_event *event;
struct gameport_driver *gameport_drv;
down(&gameport_sem);
- while ((event = gameport_get_event())) {
+ /*
+ * Note that we handle only one event here to give swsusp
+ * a chance to freeze kgameportd thread. Gameport events
+ * should be pretty rare so we are not concerned about
+ * taking performance hit.
+ */
+ if ((event = gameport_get_event())) {
switch (event->type) {
case GAMEPORT_REGISTER_PORT:
static int gameport_thread(void *nothing)
{
do {
- gameport_handle_events();
+ gameport_handle_event();
wait_event_interruptible(gameport_wait,
kthread_should_stop() || !list_empty(&gameport_event_list));
try_to_freeze();
return 0;
}
+static struct bus_type gameport_bus = {
+ .name = "gameport",
+ .probe = gameport_driver_probe,
+ .remove = gameport_driver_remove,
+};
+
void __gameport_register_driver(struct gameport_driver *drv, struct module *owner)
{
drv->driver.bus = &gameport_bus;
- drv->driver.probe = gameport_driver_probe;
- drv->driver.remove = gameport_driver_remove;
gameport_queue_event(drv, owner, GAMEPORT_REGISTER_DRIVER);
}