rtl88x2CE_WiFi_linux driver

hc

2024-05-10 cde9070d9970eef1f7ec2360586c802a16230ad8

 kernel/drivers/s390/crypto/zcrypt_card.c
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@@ -1,7 +1,5 @@
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 // SPDX-License-Identifier: GPL-2.0+
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 /*
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- *  zcrypt 2.1.0
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- *
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3
  *  Copyright IBM Corp. 2001, 2012
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  *  Author(s): Robert Burroughs
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  *	       Eric Rossman (edrossma@us.ibm.com)
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@@ -43,7 +41,7 @@
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 {
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 	struct zcrypt_card *zc = to_ap_card(dev)->private;
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-	return snprintf(buf, PAGE_SIZE, "%s\n", zc->type_string);
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+	return scnprintf(buf, PAGE_SIZE, "%s\n", zc->type_string);
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 }
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46
 
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 static DEVICE_ATTR_RO(type);
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@@ -52,21 +50,27 @@
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 			   struct device_attribute *attr,
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 			   char *buf)
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 {
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-	struct zcrypt_card *zc = to_ap_card(dev)->private;
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+	struct ap_card *ac = to_ap_card(dev);
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+	struct zcrypt_card *zc = ac->private;
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+	int online = ac->config && zc->online ? 1 : 0;
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-	return snprintf(buf, PAGE_SIZE, "%d\n", zc->online);
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+	return scnprintf(buf, PAGE_SIZE, "%d\n", online);
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 }
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59
 
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 static ssize_t online_store(struct device *dev,
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 			    struct device_attribute *attr,
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 			    const char *buf, size_t count)
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 {
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-	struct zcrypt_card *zc = to_ap_card(dev)->private;
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+	struct ap_card *ac = to_ap_card(dev);
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+	struct zcrypt_card *zc = ac->private;
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 	struct zcrypt_queue *zq;
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 	int online, id;
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 	if (sscanf(buf, "%d\n", &online) != 1 || online < 0 || online > 1)
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 		return -EINVAL;
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+
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+	if (online && !ac->config)
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+		return -ENODEV;
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 	zc->online = online;
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 	id = zc->card->id;
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@@ -88,7 +92,7 @@
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 {
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 	struct zcrypt_card *zc = to_ap_card(dev)->private;
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-	return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&zc->load));
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+	return scnprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&zc->load));
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 }
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 static DEVICE_ATTR_RO(load);
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@@ -153,11 +157,6 @@
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 {
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 	int rc;
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-	rc = sysfs_create_group(&zc->card->ap_dev.device.kobj,
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-				&zcrypt_card_attr_group);
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-	if (rc)
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-		return rc;
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-
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 	spin_lock(&zcrypt_list_lock);
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 	list_add_tail(&zc->list, &zcrypt_card_list);
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 	spin_unlock(&zcrypt_list_lock);
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@@ -165,6 +164,14 @@
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 	zc->online = 1;
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165
 
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 	ZCRYPT_DBF(DBF_INFO, "card=%02x register online=1\n", zc->card->id);
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+
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+	rc = sysfs_create_group(&zc->card->ap_dev.device.kobj,
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+				&zcrypt_card_attr_group);
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+	if (rc) {
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+		spin_lock(&zcrypt_list_lock);
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+		list_del_init(&zc->list);
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+		spin_unlock(&zcrypt_list_lock);
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+	}
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 	return rc;
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 }
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@@ -185,5 +192,6 @@
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 	spin_unlock(&zcrypt_list_lock);
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 	sysfs_remove_group(&zc->card->ap_dev.device.kobj,
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 			   &zcrypt_card_attr_group);
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+	zcrypt_card_put(zc);
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 }
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 EXPORT_SYMBOL(zcrypt_card_unregister);