static void vtpm_proxy_work(struct work_struct *work)
{
struct proxy_dev *proxy_dev = container_of(work, struct proxy_dev,
work);
int rc;
rc = tpm_chip_register(proxy_dev->chip);
if (rc)
vtpm_proxy_fops_undo_open(proxy_dev);
else
proxy_dev->state |= STATE_REGISTERED_FLAG;
}
/*
* Counter part to vtpm_create_device.
*/
static void vtpm_proxy_delete_device(struct proxy_dev *proxy_dev)
{
vtpm_proxy_work_stop(proxy_dev);
/*
* A client may hold the 'ops' lock, so let it know that the server
* side shuts down before we try to grab the 'ops' lock when
* unregistering the chip.
*/
vtpm_proxy_fops_undo_open(proxy_dev);
tpm_chip_unregister(proxy_dev->chip);
vtpm_proxy_delete_proxy_dev(proxy_dev);
}
static void vtpm_proxy_work(struct work_struct *work)
{
struct proxy_dev *proxy_dev = container_of(work, struct proxy_dev,
work);
int rc;
rc = tpm_chip_register(proxy_dev->chip);
if (rc)
goto err;
return;
err:
vtpm_proxy_fops_undo_open(proxy_dev);
}
/*
* vtpm_proxy_work_stop: make sure the work has finished
*
* This function is useful when user space closed the fd
* while the driver still determines timeouts.
*/
static void vtpm_proxy_work_stop(struct proxy_dev *proxy_dev)
{
vtpm_proxy_fops_undo_open(proxy_dev);
flush_work(&proxy_dev->work);
}