From patchwork Fri Mar 15 16:36:32 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luca Coelho X-Patchwork-Id: 10855219 X-Patchwork-Delegate: luca@coelho.fi 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 D673E1515 for ; Fri, 15 Mar 2019 16:37:25 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BEB402AACA for ; Fri, 15 Mar 2019 16:37:25 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B30B32AB2B; Fri, 15 Mar 2019 16:37:25 +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 8813F2AACA for ; Fri, 15 Mar 2019 16:37:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729601AbfCOQhY (ORCPT ); Fri, 15 Mar 2019 12:37:24 -0400 Received: from paleale.coelho.fi ([176.9.41.70]:44360 "EHLO farmhouse.coelho.fi" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1729541AbfCOQhX (ORCPT ); Fri, 15 Mar 2019 12:37:23 -0400 Received: from 91-156-6-193.elisa-laajakaista.fi ([91.156.6.193] helo=redipa.ger.corp.intel.com) by farmhouse.coelho.fi with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.91) (envelope-from ) id 1h4ppF-0004qp-09; Fri, 15 Mar 2019 18:36:53 +0200 From: Luca Coelho To: kvalo@codeaurora.org Cc: linux-wireless@vger.kernel.org, YueHaibing , Luca Coelho Date: Fri, 15 Mar 2019 18:36:32 +0200 Message-Id: <20190315163634.17315-15-luca@coelho.fi> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190315163634.17315-1-luca@coelho.fi> References: <20190315163634.17315-1-luca@coelho.fi> MIME-Version: 1.0 Subject: [PATCH 14/16] iwlwifi: Use struct_size() in kzalloc 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 From: YueHaibing Use struct_size() in kzalloc instead of the 'regd_to_copy' Signed-off-by: YueHaibing Signed-off-by: Luca Coelho --- drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c | 13 +++---------- 1 file changed, 3 insertions(+), 10 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c b/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c index 1408c89242a7..2d11fc0e351f 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c +++ b/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c @@ -1086,7 +1086,6 @@ iwl_parse_nvm_mcc_info(struct device *dev, const struct iwl_cfg *cfg, u32 reg_rule_flags, prev_reg_rule_flags = 0; const u16 *nvm_chan; struct ieee80211_regdomain *regd, *copy_rd; - int size_of_regd, regd_to_copy; struct ieee80211_reg_rule *rule; struct regdb_ptrs *regdb_ptrs; enum nl80211_band band; @@ -1116,11 +1115,7 @@ iwl_parse_nvm_mcc_info(struct device *dev, const struct iwl_cfg *cfg, num_of_ch); /* build a regdomain rule for every valid channel */ - size_of_regd = - sizeof(struct ieee80211_regdomain) + - num_of_ch * sizeof(struct ieee80211_reg_rule); - - regd = kzalloc(size_of_regd, GFP_KERNEL); + regd = kzalloc(struct_size(regd, reg_rules, num_of_ch), GFP_KERNEL); if (!regd) return ERR_PTR(-ENOMEM); @@ -1196,10 +1191,8 @@ iwl_parse_nvm_mcc_info(struct device *dev, const struct iwl_cfg *cfg, * Narrow down regdom for unused regulatory rules to prevent hole * between reg rules to wmm rules. */ - regd_to_copy = sizeof(struct ieee80211_regdomain) + - valid_rules * sizeof(struct ieee80211_reg_rule); - - copy_rd = kmemdup(regd, regd_to_copy, GFP_KERNEL); + copy_rd = kmemdup(regd, struct_size(regd, reg_rules, valid_rules), + GFP_KERNEL); if (!copy_rd) { copy_rd = ERR_PTR(-ENOMEM); goto out;