Bluetooth: Remove enable_smp parameter

The enable_smp parameter is no longer needed. It can be replaced by
checking lmp_host_le_capable.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>

2 files changed, 10 insertions, 14 deletions

diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 886cc44e1717..270933523097 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -60,8 +60,6 @@ static void hci_tx_task(unsigned long arg);
 
 static DEFINE_RWLOCK(hci_task_lock);
 
-static int enable_smp;
-
 /* HCI device list */
 LIST_HEAD(hci_dev_list);
 DEFINE_RWLOCK(hci_dev_list_lock);
@@ -1368,14 +1366,6 @@ int hci_add_adv_entry(struct hci_dev *hdev,
         return 0;
 }
 
-static struct crypto_blkcipher *alloc_cypher(void)
-{
-        if (enable_smp)
-                return crypto_alloc_blkcipher("ecb(aes)", 0, CRYPTO_ALG_ASYNC);
-
-        return ERR_PTR(-ENOTSUPP);
-}
-
 /* Register HCI device */
 int hci_register_dev(struct hci_dev *hdev)
 {
@@ -1460,7 +1450,7 @@ int hci_register_dev(struct hci_dev *hdev)
         if (!hdev->workqueue)
                 goto nomem;
 
-        hdev->tfm = alloc_cypher();
+        hdev->tfm = crypto_alloc_blkcipher("ecb(aes)", 0, CRYPTO_ALG_ASYNC);
         if (IS_ERR(hdev->tfm))
                 BT_INFO("Failed to load transform for ecb(aes): %ld",
                                                         PTR_ERR(hdev->tfm));
@@ -2352,6 +2342,3 @@ static void hci_cmd_task(unsigned long arg)
                 }
         }
 }
-
-module_param(enable_smp, bool, 0644);
-MODULE_PARM_DESC(enable_smp, "Enable SMP support (LE only)");
diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c
index a36f8707d964..ba55bd4b5dda 100644
--- a/net/bluetooth/smp.c
+++ b/net/bluetooth/smp.c
@@ -434,6 +434,9 @@ int smp_conn_security(struct l2cap_conn *conn, __u8 sec_level)
 
         BT_DBG("conn %p hcon %p level 0x%2.2x", conn, hcon, sec_level);
 
+        if (!lmp_host_le_capable(hcon->hdev))
+                return 1;
+
         if (IS_ERR(hcon->hdev->tfm))
                 return 1;
 
@@ -477,6 +480,12 @@ int smp_sig_channel(struct l2cap_conn *conn, struct sk_buff *skb)
         __u8 reason;
         int err = 0;
 
+        if (!lmp_host_le_capable(conn->hcon->hdev)) {
+                err = -ENOTSUPP;
+                reason = SMP_PAIRING_NOTSUPP;
+                goto done;
+        }
+
         if (IS_ERR(conn->hcon->hdev->tfm)) {
                 err = PTR_ERR(conn->hcon->hdev->tfm);
                 reason = SMP_PAIRING_NOTSUPP;