/**
* zcrypt_card_unregister(): Unregister a crypto card device.
* @zc: Pointer to crypto card device
*
* Unregister a crypto card device.
*/
void zcrypt_card_unregister(struct zcrypt_card *zc)
{
ZCRYPT_DBF(DBF_INFO, "card=%02x unregister\n", zc->card->id);
spin_lock(&zcrypt_list_lock);
list_del_init(&zc->list);
spin_unlock(&zcrypt_list_lock);
sysfs_remove_group(&zc->card->ap_dev.device.kobj,
&zcrypt_card_attr_group);
}
/**
* Process a rescan of the transport layer.
*
* Returns 1, if the rescan has been processed, otherwise 0.
*/
static inline int zcrypt_process_rescan(void)
{
if (atomic_read(&zcrypt_rescan_req)) {
atomic_set(&zcrypt_rescan_req, 0);
atomic_inc(&zcrypt_rescan_count);
ap_bus_force_rescan();
ZCRYPT_DBF(DBF_INFO, "rescan count=%07d",
atomic_inc_return(&zcrypt_rescan_count));
return 1;
}
return 0;
}
/**
* zcrypt_card_register() - Register a crypto card device.
* @zc: Pointer to a crypto card device
*
* Register a crypto card device. Returns 0 if successful.
*/
int zcrypt_card_register(struct zcrypt_card *zc)
{
int rc;
rc = sysfs_create_group(&zc->card->ap_dev.device.kobj,
&zcrypt_card_attr_group);
if (rc)
return rc;
spin_lock(&zcrypt_list_lock);
list_add_tail(&zc->list, &zcrypt_card_list);
spin_unlock(&zcrypt_list_lock);
zc->online = 1;
ZCRYPT_DBF(DBF_INFO, "card=%02x register online=1\n", zc->card->id);
return rc;
}
static ssize_t zcrypt_card_online_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct zcrypt_card *zc = to_ap_card(dev)->private;
struct zcrypt_queue *zq;
int online, id;
if (sscanf(buf, "%d\n", &online) != 1 || online < 0 || online > 1)
return -EINVAL;
zc->online = online;
id = zc->card->id;
ZCRYPT_DBF(DBF_INFO, "card=%02x online=%d\n", id, online);
spin_lock(&zcrypt_list_lock);
list_for_each_entry(zq, &zc->zqueues, list)
zcrypt_queue_force_online(zq, online);
spin_unlock(&zcrypt_list_lock);
return count;
}
