From patchwork Mon Jun 27 17:44:01 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jon Mason X-Patchwork-Id: 102233 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id A4AE2B6F68 for ; Tue, 28 Jun 2011 03:44:15 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752865Ab1F0RoI (ORCPT ); Mon, 27 Jun 2011 13:44:08 -0400 Received: from mail-pv0-f174.google.com ([74.125.83.174]:52919 "EHLO mail-pv0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752752Ab1F0RoG (ORCPT ); Mon, 27 Jun 2011 13:44:06 -0400 Received: by mail-pv0-f174.google.com with SMTP id 12so2991698pvg.19 for ; Mon, 27 Jun 2011 10:44:06 -0700 (PDT) Received: by 10.68.22.72 with SMTP id b8mr534747pbf.293.1309196646413; Mon, 27 Jun 2011 10:44:06 -0700 (PDT) Received: from scylla (cpe-70-113-48-102.austin.res.rr.com [70.113.48.102]) by mx.google.com with ESMTPS id x1sm4456306pbb.50.2011.06.27.10.44.03 (version=TLSv1/SSLv3 cipher=OTHER); Mon, 27 Jun 2011 10:44:05 -0700 (PDT) Received: by scylla (sSMTP sendmail emulation); Mon, 27 Jun 2011 12:44:01 -0500 From: Jon Mason To: Jeff Kirsher Cc: e1000-devel@lists.sourceforge.net, netdev@vger.kernel.org Subject: [PATCH 09/19] igb: remove unnecessary reads of PCI_CAP_ID_EXP Date: Mon, 27 Jun 2011 12:44:01 -0500 Message-Id: <1309196641-16003-1-git-send-email-jdmason@kudzu.us> X-Mailer: git-send-email 1.7.5.4 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The PCIE capability offset is saved during PCI bus walking. It will remove an unnecessary search in the PCI configuration space if this value is referenced instead of reacquiring it. Signed-off-by: Jon Mason --- drivers/net/igb/igb_main.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c index 6e67258..d6c4bd8 100644 --- a/drivers/net/igb/igb_main.c +++ b/drivers/net/igb/igb_main.c @@ -6267,7 +6267,7 @@ s32 igb_read_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value) struct igb_adapter *adapter = hw->back; u16 cap_offset; - cap_offset = pci_find_capability(adapter->pdev, PCI_CAP_ID_EXP); + cap_offset = adapter->pdev->pcie_cap; if (!cap_offset) return -E1000_ERR_CONFIG; @@ -6281,7 +6281,7 @@ s32 igb_write_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value) struct igb_adapter *adapter = hw->back; u16 cap_offset; - cap_offset = pci_find_capability(adapter->pdev, PCI_CAP_ID_EXP); + cap_offset = adapter->pdev->pcie_cap; if (!cap_offset) return -E1000_ERR_CONFIG;