From patchwork Thu Apr 7 06:37:31 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rajkumar Manoharan X-Patchwork-Id: 8769141 Return-Path: X-Original-To: patchwork-ath10k@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 75A8E9FBEA for ; Thu, 7 Apr 2016 06:39:04 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A5ABA201B9 for ; Thu, 7 Apr 2016 06:39:03 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C3FE2201C7 for ; Thu, 7 Apr 2016 06:39:02 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1ao3al-0001nG-LW; Thu, 07 Apr 2016 06:38:59 +0000 Received: from wolverine02.qualcomm.com ([199.106.114.251]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1ao3aj-0001jd-BB for ath10k@lists.infradead.org; Thu, 07 Apr 2016 06:38:58 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=qti.qualcomm.com; i=@qti.qualcomm.com; q=dns/txt; s=qcdkim; t=1460011137; x=1491547137; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=WX5U0P5DE2Mf20dGyRrL/GKNxznUyVnPghCSJsnGNtE=; b=CvKiVHPXpslleqD8NgmzLpvJwgUgcDw5nh1ZaQkF45Aj2YhJZEGUGTuv mJNof4NNavGxq7/rBhF3xO168lTzZrr+IKtVv0c7nFLydJeT3kDK3Cqcb kjBlOvm/InjNFxUV5KY3o9u/tOhoezR+RbrXWzDfvRw9WSpwP+4I5c95/ A=; X-IronPort-AV: E=Sophos;i="5.24,448,1455004800"; d="scan'208";a="277962074" Received: from ironmsg03-l-new.qualcomm.com (HELO Ironmsg03-L.qualcomm.com) ([10.53.140.110]) by wolverine02.qualcomm.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 06 Apr 2016 23:38:36 -0700 X-IronPort-AV: E=McAfee;i="5700,7163,8127"; a="1125696065" Received: from nasanexm02f.na.qualcomm.com ([10.85.0.87]) by Ironmsg03-L.qualcomm.com with ESMTP/TLS/RC4-SHA; 06 Apr 2016 23:38:36 -0700 Received: from aphydexm01b.ap.qualcomm.com (10.252.127.11) by nasanexm02f.na.qualcomm.com (10.85.0.87) with Microsoft SMTP Server (TLS) id 15.0.1130.7; Wed, 6 Apr 2016 23:38:35 -0700 Received: from qcmail1.qualcomm.com (10.80.80.8) by aphydexm01b.ap.qualcomm.com (10.252.127.11) with Microsoft SMTP Server (TLS) id 15.0.1130.7; Thu, 7 Apr 2016 12:08:12 +0530 Received: by qcmail1.qualcomm.com (sSMTP sendmail emulation); Thu, 07 Apr 2016 12:08:05 +0530 From: Rajkumar Manoharan To: Subject: [PATCH v2 3/3] ath10k: fix unconditional num_mpdus_ready subtraction Date: Thu, 7 Apr 2016 12:07:31 +0530 Message-ID: <1460011051-8272-3-git-send-email-rmanohar@qti.qualcomm.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1460011051-8272-1-git-send-email-rmanohar@qti.qualcomm.com> References: <1460011051-8272-1-git-send-email-rmanohar@qti.qualcomm.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: NASANEXM01B.na.qualcomm.com (10.85.0.82) To aphydexm01b.ap.qualcomm.com (10.252.127.11) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160406_233857_457246_D9803334 X-CRM114-Status: UNSURE ( 8.67 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -8.0 (--------) X-BeenThere: ath10k@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-wireless@vger.kernel.org, Rajkumar Manoharan , rmanohar@codeaurora.org Sender: "ath10k" Errors-To: ath10k-bounces+patchwork-ath10k=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-5.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED,RP_MATCHES_RCVD,T_DKIM_INVALID,UNPARSEABLE_RELAY autolearn=unavailable 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 Decrement num_mpdus_ready only when rx amsdu is processed successfully. Not doing so, will result in leak and impact stabilty under low memory cases. Also commit 3128b3d8a2b9 ("ath10k: speedup htt rx descriptor processing for rx_ind") missed to removed unused skb list rx_q. Fixes: 3128b3d8a2b9 ("ath10k: speedup htt rx descriptor processing for rx_ind") Signed-off-by: Rajkumar Manoharan --- v2: updated commit log drivers/net/wireless/ath/ath10k/htt_rx.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c index 41adf62d7555..9390897a00c6 100644 --- a/drivers/net/wireless/ath/ath10k/htt_rx.c +++ b/drivers/net/wireless/ath/ath10k/htt_rx.c @@ -2412,14 +2412,12 @@ static void ath10k_htt_txrx_compl_task(unsigned long ptr) struct ath10k_htt *htt = (struct ath10k_htt *)ptr; struct ath10k *ar = htt->ar; struct htt_tx_done tx_done = {}; - struct sk_buff_head rx_q; struct sk_buff_head rx_ind_q; struct sk_buff_head tx_ind_q; struct sk_buff *skb; unsigned long flags; int num_mpdus; - __skb_queue_head_init(&rx_q); __skb_queue_head_init(&rx_ind_q); __skb_queue_head_init(&tx_ind_q); @@ -2447,11 +2445,13 @@ static void ath10k_htt_txrx_compl_task(unsigned long ptr) ath10k_mac_tx_push_pending(ar); num_mpdus = atomic_read(&htt->num_mpdus_ready); - atomic_sub(num_mpdus, &htt->num_mpdus_ready); - while (num_mpdus--) { + while (num_mpdus) { if (ath10k_htt_rx_handle_amsdu(htt)) break; + + num_mpdus--; + atomic_dec(&htt->num_mpdus_ready); } while ((skb = __skb_dequeue(&rx_ind_q))) {