Bluetooth: Rename smp->local_rr into smp->local_rand

The variable for the out-of-band random number was badly named and
with that confusing. Just rename it to local_rand so it is clear
what value it represents.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

net/bluetooth/smp.c

@@ -78,7 +78,7 @@ struct smp_dev {
 	/* Secure Connections OOB data */
 	u8			local_pk[64];
 	u8			local_sk[32];
-	u8			local_rr[16];
+	u8			local_rand[16];
 	bool			debug_key;
 
 	struct crypto_blkcipher	*tfm_aes;
@@ -569,14 +569,14 @@ int smp_generate_oob(struct hci_dev *hdev, u8 hash[16], u8 rand[16])
 	SMP_DBG("OOB Public Key Y: %32phN", smp->local_pk + 32);
 	SMP_DBG("OOB Private Key:  %32phN", smp->local_sk);
 
-	get_random_bytes(smp->local_rr, 16);
+	get_random_bytes(smp->local_rand, 16);
 
 	err = smp_f4(smp->tfm_cmac, smp->local_pk, smp->local_pk,
-		     smp->local_rr, 0, hash);
+		     smp->local_rand, 0, hash);
 	if (err < 0)
 		return err;
 
-	memcpy(rand, smp->local_rr, 16);
+	memcpy(rand, smp->local_rand, 16);
 
 	return 0;
 }
@@ -1841,7 +1841,7 @@ static u8 sc_send_public_key(struct smp_chan *smp)
 
 		memcpy(smp->local_pk, smp_dev->local_pk, 64);
 		memcpy(smp->local_sk, smp_dev->local_sk, 32);
-		memcpy(smp->lr, smp_dev->local_rr, 16);
+		memcpy(smp->lr, smp_dev->local_rand, 16);
 
 		if (smp_dev->debug_key)
 			set_bit(SMP_FLAG_DEBUG_KEY, &smp->flags);