Bluetooth: Update smp_random to return a response code

Since we're now calling smp_random() "inline" we can have it directly
return a response code and have the shared command handler send the
response.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

1 files changed, 11 insertions, 23 deletions

diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c
index 8d1a1903e458..fa782d7b495b 100644
--- a/net/bluetooth/smp.c
+++ b/net/bluetooth/smp.c
@@ -503,19 +503,17 @@ error:
         smp_failure(conn, reason);
 }
 
-static void smp_random(struct smp_chan *smp)
+static u8 smp_random(struct smp_chan *smp)
 {
         struct l2cap_conn *conn = smp->conn;
         struct hci_conn *hcon = conn->hcon;
         struct hci_dev *hdev = hcon->hdev;
         struct crypto_blkcipher *tfm = hdev->tfm_aes;
-        u8 reason, confirm[16];
+        u8 confirm[16];
         int ret;
 
-        if (IS_ERR_OR_NULL(tfm)) {
-                reason = SMP_UNSPECIFIED;
-                goto error;
-        }
+        if (IS_ERR_OR_NULL(tfm))
+                return SMP_UNSPECIFIED;
 
         BT_DBG("conn %p %s", conn, conn->hcon->out ? "master" : "slave");
 
@@ -528,15 +526,12 @@ static void smp_random(struct smp_chan *smp)
 
         hci_dev_unlock(hdev);
 
-        if (ret) {
-                reason = SMP_UNSPECIFIED;
-                goto error;
-        }
+        if (ret)
+                return SMP_UNSPECIFIED;
 
         if (memcmp(smp->pcnf, confirm, sizeof(smp->pcnf)) != 0) {
                 BT_ERR("Pairing failed (confirmation values mismatch)");
-                reason = SMP_CONFIRM_FAILED;
-                goto error;
+                return SMP_CONFIRM_FAILED;
         }
 
         if (hcon->out) {
@@ -549,10 +544,8 @@ static void smp_random(struct smp_chan *smp)
                 memset(stk + smp->enc_key_size, 0,
                        SMP_MAX_ENC_KEY_SIZE - smp->enc_key_size);
 
-                if (test_and_set_bit(HCI_CONN_ENCRYPT_PEND, &hcon->flags)) {
-                        reason = SMP_UNSPECIFIED;
-                        goto error;
-                }
+                if (test_and_set_bit(HCI_CONN_ENCRYPT_PEND, &hcon->flags))
+                        return SMP_UNSPECIFIED;
 
                 hci_le_start_enc(hcon, ediv, rand, stk);
                 hcon->enc_key_size = smp->enc_key_size;
@@ -574,10 +567,7 @@ static void smp_random(struct smp_chan *smp)
                             ediv, rand);
         }
 
-        return;
-
-error:
-        smp_failure(conn, reason);
+        return 0;
 }
 
 static struct smp_chan *smp_chan_create(struct l2cap_conn *conn)
@@ -815,9 +805,7 @@ static u8 smp_cmd_pairing_random(struct l2cap_conn *conn, struct sk_buff *skb)
         memcpy(smp->rrnd, skb->data, sizeof(smp->rrnd));
         skb_pull(skb, sizeof(smp->rrnd));
 
-        smp_random(smp);
-
-        return 0;
+        return smp_random(smp);
 }
 
 static u8 smp_ltk_encrypt(struct l2cap_conn *conn, u8 sec_level)