Fix when CONFIG_MODULES is not enabled:
drivers/staging/lirc/lirc_parallel.c:243: error: implicit declaration of function 'module_refcount'
drivers/staging/lirc/lirc_it87.c:150: error: implicit declaration of function 'module_refcount'
drivers/built-in.o: In function `it87_probe':
lirc_it87.c:(.text+0x4079b0): undefined reference to `init_chrdev'
lirc_it87.c:(.text+0x4079cc): undefined reference to `drop_chrdev'
drivers/built-in.o: In function `lirc_it87_exit':
lirc_it87.c:(.exit.text+0x38a5): undefined reference to `drop_chrdev'
Its a quick hack and untested beyond building, since I don't have the
hardware, but it should do the trick.
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
static DEFINE_SPINLOCK(hardware_lock);
static DEFINE_SPINLOCK(dev_lock);
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 rx_buf[RBUF_LEN];
unsigned int rx_tail, rx_head;
static int lirc_open(struct inode *inode, struct file *file)
{
spin_lock(&dev_lock);
static int lirc_open(struct inode *inode, struct file *file)
{
spin_lock(&dev_lock);
- if (module_refcount(THIS_MODULE)) {
spin_unlock(&dev_lock);
return -EBUSY;
}
spin_unlock(&dev_lock);
return -EBUSY;
}
spin_unlock(&dev_lock);
return 0;
}
spin_unlock(&dev_lock);
return 0;
}
static int lirc_close(struct inode *inode, struct file *file)
{
static int lirc_close(struct inode *inode, struct file *file)
{
+ spin_lock(&dev_lock);
+ device_open = false;
+ spin_unlock(&dev_lock);
static int init_chrdev(void)
{
driver.minor = lirc_register_driver(&driver);
static int init_chrdev(void)
{
driver.minor = lirc_register_driver(&driver);
{
lirc_unregister_driver(driver.minor);
}
{
lirc_unregister_driver(driver.minor);
}
unsigned int level, newlevel;
unsigned int timeout;
unsigned int level, newlevel;
unsigned int timeout;
- if (!module_refcount(THIS_MODULE))
static int lirc_open(struct inode *node, struct file *filep)
{
static int lirc_open(struct inode *node, struct file *filep)
{
- if (module_refcount(THIS_MODULE) || !lirc_claim())
+ if (is_open || !lirc_claim())
return -EBUSY;
parport_enable_irq(pport);
return -EBUSY;
parport_enable_irq(pport);