From patchwork Mon Dec 22 11:53:07 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johannes Berg X-Patchwork-Id: 5527221 Return-Path: X-Original-To: patchwork-linux-wireless@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 481BB9F2F7 for ; Mon, 22 Dec 2014 11:53:19 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 5394820160 for ; Mon, 22 Dec 2014 11:53:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1E6012015A for ; Mon, 22 Dec 2014 11:53:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754790AbaLVLxM (ORCPT ); Mon, 22 Dec 2014 06:53:12 -0500 Received: from s3.sipsolutions.net ([5.9.151.49]:33152 "EHLO sipsolutions.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754616AbaLVLxL (ORCPT ); Mon, 22 Dec 2014 06:53:11 -0500 Received: by sipsolutions.net with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_CBC_SHA256:128) (Exim 4.84) (envelope-from ) id 1Y31Xx-00063H-Nf; Mon, 22 Dec 2014 12:53:09 +0100 From: Johannes Berg To: linux-wireless@vger.kernel.org Cc: David Binderman , Johannes Berg Subject: [PATCH] mac80211_hwsim: fix check for custom world regdom array size Date: Mon, 22 Dec 2014 12:53:07 +0100 Message-Id: <1419249187-8823-1-git-send-email-johannes@sipsolutions.net> X-Mailer: git-send-email 2.1.1 Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Johannes Berg David Binderman reports that the conditions in the first loop are the wrong way around - checking the array contents before the size. Instead of leaving the empty loop there and reordering the two checks unify it into a single loop that skips over non-matches and exits after the first match. Reported-by: David Binderman Signed-off-by: Johannes Berg --- drivers/net/wireless/mac80211_hwsim.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c index a71b9d5e353d..057a99e01637 100644 --- a/drivers/net/wireless/mac80211_hwsim.c +++ b/drivers/net/wireless/mac80211_hwsim.c @@ -2150,14 +2150,14 @@ static int append_radio_msg(struct sk_buff *skb, int id, if (param->regd) { int i; - for (i = 0; hwsim_world_regdom_custom[i] != param->regd && - i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) - ; + for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) { + if (hwsim_world_regdom_custom[i] != param->regd) + continue; - if (i < ARRAY_SIZE(hwsim_world_regdom_custom)) { ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i); if (ret < 0) return ret; + break; } }