/**
* usb_tranzport_delete
*/
static void usb_tranzport_delete(struct usb_tranzport *dev)
{
usb_tranzport_abort_transfers(dev);
/* This is just too twisted to be correct */
if(dev->intf != NULL) {
device_remove_file(&dev->intf->dev, &dev_attr_LightRecord);
device_remove_file(&dev->intf->dev, &dev_attr_LightTrackrec);
device_remove_file(&dev->intf->dev, &dev_attr_LightTrackmute);
device_remove_file(&dev->intf->dev, &dev_attr_LightTracksolo);
device_remove_file(&dev->intf->dev, &dev_attr_LightTrackmute);
device_remove_file(&dev->intf->dev, &dev_attr_LightAnysolo);
device_remove_file(&dev->intf->dev, &dev_attr_LightLoop);
device_remove_file(&dev->intf->dev, &dev_attr_LightPunch);
device_remove_file(&dev->intf->dev, &dev_attr_wheel);
device_remove_file(&dev->intf->dev, &dev_attr_enable);
device_remove_file(&dev->intf->dev, &dev_attr_event);
device_remove_file(&dev->intf->dev, &dev_attr_offline);
device_remove_file(&dev->intf->dev, &dev_attr_compress_wheel);
device_remove_file(&dev->intf->dev, &dev_attr_dump_state);
}
/* free data structures */
usb_free_urb(dev->interrupt_in_urb);
usb_free_urb(dev->interrupt_out_urb);
kfree(dev->ring_buffer);
kfree(dev->interrupt_in_buffer);
kfree(dev->interrupt_out_buffer);
kfree(dev);
}
/**
* usb_tranzport_delete
*/
static void usb_tranzport_delete(struct usb_tranzport *dev)
{
usb_tranzport_abort_transfers(dev);
if (dev->intf != NULL) {
device_remove_file(&dev->intf->dev, &dev_attr_enable);
device_remove_file(&dev->intf->dev, &dev_attr_offline);
device_remove_file(&dev->intf->dev, &dev_attr_compress_wheel);
}
/* free data structures */
usb_free_urb(dev->interrupt_in_urb);
usb_free_urb(dev->interrupt_out_urb);
kfree(dev->ring_buffer);
kfree(dev->interrupt_in_buffer);
kfree(dev->interrupt_out_buffer);
kfree(dev);
}
/**
* usb_tranzport_release
*/
static int usb_tranzport_release(struct inode *inode, struct file *file)
{
struct usb_tranzport *dev;
int retval = 0;
dev = file->private_data;
if (dev == NULL) {
retval = -ENODEV;
goto exit;
}
if (mutex_lock_interruptible(&dev->mtx)) {
retval = -ERESTARTSYS;
goto exit;
}
if (dev->open_count != 1) {
retval = -ENODEV;
goto unlock_exit;
}
if (dev->intf == NULL) {
/* the device was unplugged before the file was released */
mutex_unlock(&dev->mtx);
/* unlock here as usb_tranzport_delete frees dev */
usb_tranzport_delete(dev);
retval = -ENODEV;
goto exit;
}
/* wait until write transfer is finished */
if (dev->interrupt_out_busy)
wait_event_interruptible_timeout(dev->write_wait,
!dev->interrupt_out_busy,
2 * HZ);
usb_tranzport_abort_transfers(dev);
dev->open_count = 0;
unlock_exit:
mutex_unlock(&dev->mtx);
exit:
return retval;
}
