From patchwork Wed Jul 22 11:53:45 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Amitkumar Karwar X-Patchwork-Id: 6842291 X-Patchwork-Delegate: kvalo@adurom.com Return-Path: X-Original-To: patchwork-linux-wireless@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 140BCC05AC for ; Wed, 22 Jul 2015 11:54:31 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 38AB32075A for ; Wed, 22 Jul 2015 11:54:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 647E3206D0 for ; Wed, 22 Jul 2015 11:54:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964859AbbGVLy2 (ORCPT ); Wed, 22 Jul 2015 07:54:28 -0400 Received: from mx0a-0016f401.pphosted.com ([67.231.148.174]:4743 "EHLO mx0a-0016f401.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964845AbbGVLy0 (ORCPT ); Wed, 22 Jul 2015 07:54:26 -0400 Received: from pps.filterd (m0045849.ppops.net [127.0.0.1]) by mx0a-0016f401.pphosted.com (8.15.0.59/8.15.0.59) with SMTP id t6MBnm6P028385 for ; Wed, 22 Jul 2015 04:54:26 -0700 Received: from sc-exch03.marvell.com ([199.233.58.183]) by mx0a-0016f401.pphosted.com with ESMTP id 1vqm5jkw4w-1 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT) for ; Wed, 22 Jul 2015 04:54:26 -0700 Received: from SC-EXCH03.marvell.com (10.93.176.83) by SC-EXCH03.marvell.com (10.93.176.83) with Microsoft SMTP Server (TLS) id 15.0.1044.25; Wed, 22 Jul 2015 04:54:25 -0700 Received: from maili.marvell.com (10.93.176.43) by SC-EXCH03.marvell.com (10.93.176.83) with Microsoft SMTP Server id 15.0.1044.25 via Frontend Transport; Wed, 22 Jul 2015 04:54:25 -0700 Received: from pe-lt101 (unknown [10.31.130.41]) by maili.marvell.com (Postfix) with ESMTP id 3D1DC3F703F; Wed, 22 Jul 2015 04:54:24 -0700 (PDT) Received: from pe-lt101 (pe-lt077 [127.0.0.1]) by pe-lt101 (8.14.4/8.14.4) with ESMTP id t6MBs3bk003366; Wed, 22 Jul 2015 04:54:03 -0700 Received: (from root@localhost) by pe-lt101 (8.14.4/8.14.4/Submit) id t6MBs3Ys003365; Wed, 22 Jul 2015 04:54:03 -0700 From: Amitkumar Karwar To: CC: Cathy Luo , Amitkumar Karwar , Zhaoyang Liu Subject: [PATCH 4/4] mwifiex: corrections in PCIe event skb handling Date: Wed, 22 Jul 2015 04:53:45 -0700 Message-ID: <1437566025-3324-4-git-send-email-akarwar@marvell.com> X-Mailer: git-send-email 1.7.3.4 In-Reply-To: <1437566025-3324-1-git-send-email-akarwar@marvell.com> References: <1437566025-3324-1-git-send-email-akarwar@marvell.com> MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2015-07-22_04:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 kscore.is_bulkscore=0 kscore.compositescore=1 compositescore=0.9 suspectscore=1 malwarescore=0 phishscore=0 bulkscore=0 kscore.is_spamscore=0 rbsscore=0.9 spamscore=0 urlsuspectscore=0.9 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1506180000 definitions=main-1507220196 Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org X-Spam-Status: No, score=-8.1 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, 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 Preallocated event SKBs are getting reused for PCIe chipset. Their physical addresses are shared with firmware so that firmware can write data into them. This patch makes sure that SKB is cleared and length is set to default while submitting it to firmware. Signed-off-by: Amitkumar Karwar Signed-off-by: Zhaoyang Liu --- drivers/net/wireless/mwifiex/pcie.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/wireless/mwifiex/pcie.c b/drivers/net/wireless/mwifiex/pcie.c index 77b9055..33c75d7 100644 --- a/drivers/net/wireless/mwifiex/pcie.c +++ b/drivers/net/wireless/mwifiex/pcie.c @@ -1807,6 +1807,8 @@ static int mwifiex_pcie_event_complete(struct mwifiex_adapter *adapter, if (!card->evt_buf_list[rdptr]) { skb_push(skb, INTF_HEADER_LEN); + skb_put(skb, MAX_EVENT_SIZE - skb->len); + memset(skb->data, 0, MAX_EVENT_SIZE); if (mwifiex_map_pci_memory(adapter, skb, MAX_EVENT_SIZE, PCI_DMA_FROMDEVICE))