From patchwork Mon Feb 25 18:42:58 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Kirsher, Jeffrey T" X-Patchwork-Id: 1047928 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=intel.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 447W6Y3Ptgz9sBr for ; Tue, 26 Feb 2019 05:43:17 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728945AbfBYSnQ (ORCPT ); Mon, 25 Feb 2019 13:43:16 -0500 Received: from mga02.intel.com ([134.134.136.20]:17913 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728922AbfBYSnP (ORCPT ); Mon, 25 Feb 2019 13:43:15 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 25 Feb 2019 10:43:10 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.58,412,1544515200"; d="scan'208";a="137088384" Received: from jtkirshe-desk1.jf.intel.com ([134.134.177.96]) by orsmga002.jf.intel.com with ESMTP; 25 Feb 2019 10:43:12 -0800 From: Jeff Kirsher To: davem@davemloft.net Cc: Bruce Allan , netdev@vger.kernel.org, nhorman@redhat.com, sassmann@redhat.com, Anirudh Venkataramanan , Andrew Bowers , Jeff Kirsher Subject: [net-next 08/16] ice: fix numeric overflow warning Date: Mon, 25 Feb 2019 10:42:58 -0800 Message-Id: <20190225184306.13505-9-jeffrey.t.kirsher@intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190225184306.13505-1-jeffrey.t.kirsher@intel.com> References: <20190225184306.13505-1-jeffrey.t.kirsher@intel.com> MIME-Version: 1.0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Bruce Allan When compiling and analyzing the driver on newer kernels, a static analyzer warns about the following "numeric overflow" issues: "The result of expression: 'budget-1' generates 4-byte type while casting to a bigger size of 8-byte". "The result of expression: '*words-words_read' generates 4-byte type while casting to a bigger size of 8-byte". Fix them both. Signed-off-by: Bruce Allan Signed-off-by: Anirudh Venkataramanan Tested-by: Andrew Bowers Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/ice/ice_nvm.c | 7 ++++--- drivers/net/ethernet/intel/ice/ice_txrx.c | 2 +- 2 files changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/intel/ice/ice_nvm.c b/drivers/net/ethernet/intel/ice/ice_nvm.c index ce64cecdae9c..413fdbbcc4d0 100644 --- a/drivers/net/ethernet/intel/ice/ice_nvm.c +++ b/drivers/net/ethernet/intel/ice/ice_nvm.c @@ -152,9 +152,10 @@ ice_read_sr_buf_aq(struct ice_hw *hw, u16 offset, u16 *words, u16 *data) */ off_w = offset % ICE_SR_SECTOR_SIZE_IN_WORDS; read_size = off_w ? - min(*words, - (u16)(ICE_SR_SECTOR_SIZE_IN_WORDS - off_w)) : - min((*words - words_read), ICE_SR_SECTOR_SIZE_IN_WORDS); + min_t(u16, *words, + (ICE_SR_SECTOR_SIZE_IN_WORDS - off_w)) : + min_t(u16, (*words - words_read), + ICE_SR_SECTOR_SIZE_IN_WORDS); /* Check if this is last command, if so set proper flag */ if ((words_read + read_size) >= *words) diff --git a/drivers/net/ethernet/intel/ice/ice_txrx.c b/drivers/net/ethernet/intel/ice/ice_txrx.c index 67d129bfe489..c289d97f477d 100644 --- a/drivers/net/ethernet/intel/ice/ice_txrx.c +++ b/drivers/net/ethernet/intel/ice/ice_txrx.c @@ -1169,7 +1169,7 @@ int ice_napi_poll(struct napi_struct *napi, int budget) if (test_bit(ICE_FLAG_MSIX_ENA, pf->flags)) ice_update_ena_itr(vsi, q_vector); - return min(work_done, budget - 1); + return min_t(int, work_done, budget - 1); } /* helper function for building cmd/type/offset */