From patchwork Wed Apr 3 19:06:36 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Gustavo A. R. Silva" X-Patchwork-Id: 10884377 X-Patchwork-Delegate: kvalo@adurom.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6776A1708 for ; Wed, 3 Apr 2019 19:30:39 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 52852289D0 for ; Wed, 3 Apr 2019 19:30:39 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 464F2289C9; Wed, 3 Apr 2019 19:30:39 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E51DC289C9 for ; Wed, 3 Apr 2019 19:30:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726585AbfDCTah (ORCPT ); Wed, 3 Apr 2019 15:30:37 -0400 Received: from gateway20.websitewelcome.com ([192.185.65.13]:40464 "EHLO gateway20.websitewelcome.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726151AbfDCTah (ORCPT ); Wed, 3 Apr 2019 15:30:37 -0400 X-Greylist: delayed 1367 seconds by postgrey-1.27 at vger.kernel.org; Wed, 03 Apr 2019 15:30:37 EDT Received: from cm12.websitewelcome.com (cm12.websitewelcome.com [100.42.49.8]) by gateway20.websitewelcome.com (Postfix) with ESMTP id 20EC3400ED61C for ; Wed, 3 Apr 2019 14:06:38 -0500 (CDT) Received: from gator4166.hostgator.com ([108.167.133.22]) by cmsmtp with SMTP id BlDahcJNdiQerBlDahNIT6; Wed, 03 Apr 2019 14:06:38 -0500 X-Authority-Reason: nr=8 Received: from [189.250.114.183] (port=48104 helo=embeddedor) by gator4166.hostgator.com with esmtpa (Exim 4.91) (envelope-from ) id 1hBlDZ-0033Pm-BZ; Wed, 03 Apr 2019 14:06:37 -0500 Date: Wed, 3 Apr 2019 14:06:36 -0500 From: "Gustavo A. R. Silva" To: Kalle Valo , "David S. Miller" Cc: ath10k@lists.infradead.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, "Gustavo A. R. Silva" Subject: [PATCH][next] ath10k: coredump: use struct_size() helper Message-ID: <20190403190636.GA9827@embeddedor> MIME-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.9.4 (2018-02-28) X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - gator4166.hostgator.com X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - embeddedor.com X-BWhitelist: no X-Source-IP: 189.250.114.183 X-Source-L: No X-Exim-ID: 1hBlDZ-0033Pm-BZ X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: (embeddedor) [189.250.114.183]:48104 X-Source-Auth: gustavo@embeddedor.com X-Email-Count: 4 X-Source-Cap: Z3V6aWRpbmU7Z3V6aWRpbmU7Z2F0b3I0MTY2Lmhvc3RnYXRvci5jb20= X-Local-Domain: yes Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Make use of the struct_size() helper instead of an open-coded version in order to avoid any potential type mistakes, in particular in the context in which this code is being used. So, replace code of the following form: sizeof(*ce_hdr) + CE_COUNT * sizeof(ce_hdr->entries[0]) with: struct_size(ce_hdr, entries, CE_COUNT) This code was detected with the help of Coccinelle. Signed-off-by: Gustavo A. R. Silva --- drivers/net/wireless/ath/ath10k/coredump.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/ath/ath10k/coredump.c b/drivers/net/wireless/ath/ath10k/coredump.c index 33838d9c1cb6..7825b6a1b104 100644 --- a/drivers/net/wireless/ath/ath10k/coredump.c +++ b/drivers/net/wireless/ath/ath10k/coredump.c @@ -1192,8 +1192,8 @@ static struct ath10k_dump_file_data *ath10k_coredump_build(struct ath10k *ar) if (test_bit(ATH10K_FW_CRASH_DUMP_CE_DATA, &ath10k_coredump_mask)) { dump_tlv = (struct ath10k_tlv_dump_data *)(buf + sofar); dump_tlv->type = cpu_to_le32(ATH10K_FW_CRASH_DUMP_CE_DATA); - dump_tlv->tlv_len = cpu_to_le32(sizeof(*ce_hdr) + - CE_COUNT * sizeof(ce_hdr->entries[0])); + dump_tlv->tlv_len = cpu_to_le32(struct_size(ce_hdr, entries, + CE_COUNT)); ce_hdr = (struct ath10k_ce_crash_hdr *)(dump_tlv->tlv_data); ce_hdr->ce_count = cpu_to_le32(CE_COUNT); memset(ce_hdr->reserved, 0, sizeof(ce_hdr->reserved));