BLUETOOTH: Fix unaligned access in hci_send_to_sock.

The "u16 *" derefs of skb->data need to be wrapped inside of
a get_unaligned().

Thanks to Gustavo Zacarias for the bug report.
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Adrian Bunk <bunk@stusta.de>

net/bluetooth/hci_sock.c

@@ -121,10 +121,13 @@ void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb)
 			if (!hci_test_bit(evt, &flt->event_mask))
 				continue;
 
-			if (flt->opcode && ((evt == HCI_EV_CMD_COMPLETE && 
-					flt->opcode != *(__u16 *)(skb->data + 3)) ||
-					(evt == HCI_EV_CMD_STATUS && 
-					flt->opcode != *(__u16 *)(skb->data + 4))))
+			if (flt->opcode &&
+			    ((evt == HCI_EV_CMD_COMPLETE &&
+			      flt->opcode !=
+			      get_unaligned((__u16 *)(skb->data + 3))) ||
+			     (evt == HCI_EV_CMD_STATUS &&
+			      flt->opcode !=
+			      get_unaligned((__u16 *)(skb->data + 4)))))
 				continue;
 		}