From patchwork Fri Jan 30 13:35:22 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sujith Manoharan X-Patchwork-Id: 5749971 X-Patchwork-Delegate: kvalo@adurom.com 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 [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id A0CAE9F3E6 for ; Fri, 30 Jan 2015 13:32:48 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id DF73120279 for ; Fri, 30 Jan 2015 13:32:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 097C12027D for ; Fri, 30 Jan 2015 13:32:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932446AbbA3Ncp (ORCPT ); Fri, 30 Jan 2015 08:32:45 -0500 Received: from s72.web-hosting.com ([198.187.29.22]:39880 "EHLO s72.web-hosting.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761333AbbA3Ncn (ORCPT ); Fri, 30 Jan 2015 08:32:43 -0500 Received: from [117.207.72.194] (port=10794 helo=sujith-pixel.qualcomm.com) by server72.web-hosting.com with esmtpsa (UNKNOWN:AES128-SHA256:128) (Exim 4.82) (envelope-from ) id 1YHBgg-004FiR-Ii for linux-wireless@vger.kernel.org; Fri, 30 Jan 2015 08:32:42 -0500 From: Sujith Manoharan To: linux-wireless@vger.kernel.org Subject: [PATCH 02/17] ath9k: Return early for error conditions Date: Fri, 30 Jan 2015 19:05:22 +0530 Message-Id: <1422624937-4810-3-git-send-email-sujith@msujith.org> X-Mailer: git-send-email 2.2.2 In-Reply-To: <1422624937-4810-1-git-send-email-sujith@msujith.org> References: <1422624937-4810-1-git-send-email-sujith@msujith.org> X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - server72.web-hosting.com X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - msujith.org X-Get-Message-Sender-Via: server72.web-hosting.com: authenticated_id: sujith@msujith.org X-Source: X-Source-Args: X-Source-Dir: 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: Sujith Manoharan Do not try to cancel work instances and ANI when the device is not present or WOW triggers are not configured. Bail out early and use ath_err() for such error conditions. Signed-off-by: Sujith Manoharan --- drivers/net/wireless/ath/ath9k/wow.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/wow.c b/drivers/net/wireless/ath/ath9k/wow.c index 4ffaadd..1d5cd88 100644 --- a/drivers/net/wireless/ath/ath9k/wow.c +++ b/drivers/net/wireless/ath/ath9k/wow.c @@ -197,21 +197,21 @@ int ath9k_suspend(struct ieee80211_hw *hw, mutex_lock(&sc->mutex); - ath_cancel_work(sc); - ath_stop_ani(sc); - if (test_bit(ATH_OP_INVALID, &common->op_flags)) { - ath_dbg(common, ANY, "Device not present\n"); - ret = -EINVAL; + ath_err(common, "Device not present\n"); + ret = -ENODEV; goto fail_wow; } if (WARN_ON(!wowlan)) { - ath_dbg(common, WOW, "None of the WoW triggers enabled\n"); + ath_err(common, "None of the WoW triggers enabled\n"); ret = -EINVAL; goto fail_wow; } + ath_cancel_work(sc); + ath_stop_ani(sc); + if (!device_can_wakeup(sc->dev)) { ath_dbg(common, WOW, "device_can_wakeup failed, WoW is not enabled\n"); ret = 1;