static DEFINE_SPINLOCK(hardware_lock);
static DEFINE_SPINLOCK(dev_lock);
+static bool device_open;
static int rx_buf[RBUF_LEN];
unsigned int rx_tail, rx_head;
static int lirc_open(struct inode *inode, struct file *file)
{
spin_lock(&dev_lock);
- if (module_refcount(THIS_MODULE)) {
+ if (device_open) {
spin_unlock(&dev_lock);
return -EBUSY;
}
+ device_open = true;
spin_unlock(&dev_lock);
return 0;
}
static int lirc_close(struct inode *inode, struct file *file)
{
+ spin_lock(&dev_lock);
+ device_open = false;
+ spin_unlock(&dev_lock);
return 0;
}
};
-#ifdef MODULE
static int init_chrdev(void)
{
driver.minor = lirc_register_driver(&driver);
{
lirc_unregister_driver(driver.minor);
}
-#endif
/* SECTION: Hardware */