wl1271: remove workaround for disconnection

Now we're using a the idle information coming from mac80211 to decide when to
disconnect.  If we have joined (ie. we're listening to a channel), whenever
the interface goes to idle, we will issue a disconnect command.  So the
workaround to send a disconnect command before joining is not needed anymore.
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Reviewed-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/wl12xx/wl1271_cmd.c

@@ -344,19 +344,6 @@ int wl1271_cmd_join(struct wl1271 *wl)
 			do_cal = false;
 	}
 
-	/* FIXME: This is a workaround, because with the current stack, we
-	 * cannot know when we have disassociated.  So, if we have already
-	 * joined, we disconnect before joining again. */
-	if (wl->joined) {
-		ret = wl1271_cmd_disconnect(wl);
-		if (ret < 0) {
-			wl1271_error("failed to disconnect before rejoining");
-			goto out;
-		}
-
-		wl->joined = false;
-	}
-
 	join = kzalloc(sizeof(*join), GFP_KERNEL);
 	if (!join) {
 		ret = -ENOMEM;
@@ -421,8 +408,6 @@ int wl1271_cmd_join(struct wl1271 *wl)
 		goto out_free;
 	}
 
-	wl->joined = true;
-
 	/*
 	 * ugly hack: we should wait for JOIN_EVENT_COMPLETE_ID but to
 	 * simplify locking we just sleep instead, for now