diff options
Diffstat (limited to 'drivers/s390/crypto/zcrypt_card.c')
| -rw-r--r-- | drivers/s390/crypto/zcrypt_card.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/s390/crypto/zcrypt_card.c b/drivers/s390/crypto/zcrypt_card.c index c53cab4b0c9e..e342eb86acd1 100644 --- a/drivers/s390/crypto/zcrypt_card.c +++ b/drivers/s390/crypto/zcrypt_card.c @@ -50,22 +50,28 @@ static ssize_t online_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct zcrypt_card *zc = to_ap_card(dev)->private; + struct ap_card *ac = to_ap_card(dev); + struct zcrypt_card *zc = ac->private; + int online = ac->config && zc->online ? 1 : 0; - return scnprintf(buf, PAGE_SIZE, "%d\n", zc->online); + return scnprintf(buf, PAGE_SIZE, "%d\n", online); } static ssize_t 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 ap_card *ac = to_ap_card(dev); + struct zcrypt_card *zc = ac->private; struct zcrypt_queue *zq; int online, id; if (sscanf(buf, "%d\n", &online) != 1 || online < 0 || online > 1) return -EINVAL; + if (online && !ac->config) + return -ENODEV; + zc->online = online; id = zc->card->id; |