From patchwork Fri Apr 17 00:06:05 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Catherine Sullivan X-Patchwork-Id: 461890 X-Patchwork-Delegate: jeffrey.t.kirsher@intel.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from fraxinus.osuosl.org (fraxinus.osuosl.org [140.211.166.137]) by ozlabs.org (Postfix) with ESMTP id 3A9571402B0 for ; Fri, 17 Apr 2015 10:03:22 +1000 (AEST) Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id 8F69189E85; Fri, 17 Apr 2015 00:03:21 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id GBb6uw37Tdx4; Fri, 17 Apr 2015 00:03:21 +0000 (UTC) Received: from ash.osuosl.org (ash.osuosl.org [140.211.166.34]) by fraxinus.osuosl.org (Postfix) with ESMTP id 104F689E8C; Fri, 17 Apr 2015 00:03:21 +0000 (UTC) X-Original-To: intel-wired-lan@lists.osuosl.org Delivered-To: intel-wired-lan@lists.osuosl.org Received: from fraxinus.osuosl.org (fraxinus.osuosl.org [140.211.166.137]) by ash.osuosl.org (Postfix) with ESMTP id 509461C223A for ; Fri, 17 Apr 2015 00:03:19 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id 4C67289E85 for ; Fri, 17 Apr 2015 00:03:19 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id SIOPvyTsIdNM for ; Fri, 17 Apr 2015 00:03:18 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by fraxinus.osuosl.org (Postfix) with ESMTP id D9E1189E8C for ; Fri, 17 Apr 2015 00:03:18 +0000 (UTC) Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga102.jf.intel.com with ESMTP; 16 Apr 2015 17:03:18 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.11,591,1422950400"; d="scan'208";a="481989673" Received: from catheri1-tigger.jf.intel.com ([134.134.176.92]) by FMSMGA003.fm.intel.com with ESMTP; 16 Apr 2015 17:03:18 -0700 From: Catherine Sullivan To: intel-wired-lan@lists.osuosl.org Date: Thu, 16 Apr 2015 20:06:05 -0400 Message-Id: <1429229172-143692-9-git-send-email-catherine.sullivan@intel.com> X-Mailer: git-send-email 1.9.3 In-Reply-To: <1429229172-143692-1-git-send-email-catherine.sullivan@intel.com> References: <1429229172-143692-1-git-send-email-catherine.sullivan@intel.com> Subject: [Intel-wired-lan] [net-next S4 08/15] i40e: fix unrecognized FCOE EOF case X-BeenThere: intel-wired-lan@lists.osuosl.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Intel Wired Ethernet Linux Kernel Driver Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: intel-wired-lan-bounces@lists.osuosl.org Sender: "Intel-wired-lan" From: Vasu Dev Because i40e_fcoe_ctxt_eof should never be called without i40e_fcoe_eof_is_supported being called first, the EOF in fcoe_ctxt_eof should always be valid and therefore we do not need to print an error if it is not valid. However, a WARN ON to easily catch any calls to i40e_fcoe_ctxt_eof that aren't preceded with a call to i40e_fcoe_eof_is_supported is helpful. Signed-off-by: Vasu Dev Change-ID: I3b536b1981ec0bce80576a74440b7dea3908bdb9 Tested-by: Jim Young --- drivers/net/ethernet/intel/i40e/i40e_fcoe.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e_fcoe.c b/drivers/net/ethernet/intel/i40e/i40e_fcoe.c index 1803afe..c8b621e 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_fcoe.c +++ b/drivers/net/ethernet/intel/i40e/i40e_fcoe.c @@ -118,7 +118,7 @@ static inline int i40e_fcoe_fc_eof(struct sk_buff *skb, u8 *eof) * * The FC EOF is converted to the value understood by HW for descriptor * programming. Never call this w/o calling i40e_fcoe_eof_is_supported() - * first. + * first and that already checks for all supported valid eof values. **/ static inline u32 i40e_fcoe_ctxt_eof(u8 eof) { @@ -132,9 +132,12 @@ static inline u32 i40e_fcoe_ctxt_eof(u8 eof) case FC_EOF_A: return I40E_TX_DESC_CMD_L4T_EOFT_EOF_A; default: - /* FIXME: still returns 0 */ - pr_err("Unrecognized EOF %x\n", eof); - return 0; + /* Supported valid eof shall be already checked by + * calling i40e_fcoe_eof_is_supported() first, + * therefore this default case shall never hit. + */ + WARN_ON(1); + return -EINVAL; } }