From nobody Fri Dec 19 03:44:07 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8CC0ECA0ECB for ; Mon, 11 Sep 2023 21:17:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245276AbjIKVJL (ORCPT ); Mon, 11 Sep 2023 17:09:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51788 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237214AbjIKMPh (ORCPT ); Mon, 11 Sep 2023 08:15:37 -0400 Received: from mgamail.intel.com (mgamail.intel.com [134.134.136.65]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9D618CEB; Mon, 11 Sep 2023 05:15:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1694434533; x=1725970533; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=IUhBzeQfkRSLlRegZBQsKn8efuvEYSiJqgGwvHl8g+s=; b=NXTRS7zyG2DM3E6oFFvDou2aEXuYHHwhzwAcWj4aU5sExJcmxc7sH4k0 nOLsNV+wjTuJFtYOoguM9AoiseAqvN059MOfijQCWnf3pt3Ug0aXpBwIV mqG3RoUMH+uvH09PLZa/V7KFgG23i45+IZVAttayKpR+SYkNi4pj7PRLx fnqRRpNqsnTLBbAnwkGoeoyS5xFD6YXOsJVZgmFOjGc4hhB2/asqrUluf gQUf2lNsmUGY1X1kQA+BcERzKYkvOhHYJRJ9XOQBh8aHePbzmQytuIFU2 pOAc8DuMj5WXLo++mDrKk1ggaFbClDB4ktknUrZ0IfjnJoicoU66/vQ6W g==; X-IronPort-AV: E=McAfee;i="6600,9927,10830"; a="381863570" X-IronPort-AV: E=Sophos;i="6.02,244,1688454000"; d="scan'208";a="381863570" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Sep 2023 05:15:33 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10830"; a="746383348" X-IronPort-AV: E=Sophos;i="6.02,244,1688454000"; d="scan'208";a="746383348" Received: from mzarkov-mobl3.ger.corp.intel.com (HELO ijarvine-mobl2.ger.corp.intel.com) ([10.252.36.200]) by fmsmga007-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Sep 2023 05:15:31 -0700 From: =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= To: linux-pci@vger.kernel.org, Bjorn Helgaas , Bjorn Helgaas , linux-kernel@vger.kernel.org Cc: =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= Subject: [PATCH 6/8] PCI: Use FIELD_GET() to extract Link Width Date: Mon, 11 Sep 2023 15:14:59 +0300 Message-Id: <20230911121501.21910-7-ilpo.jarvinen@linux.intel.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230911121501.21910-1-ilpo.jarvinen@linux.intel.com> References: <20230911121501.21910-1-ilpo.jarvinen@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Use FIELD_GET() to extract PCIe Negotiated and Maximum Link Width fields instead of custom masking and shifting. Signed-off-by: Ilpo J=C3=A4rvinen --- drivers/pci/pci-sysfs.c | 5 ++--- drivers/pci/pci.c | 6 +++--- 2 files changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c index d9eede2dbc0e..5a6241044c3c 100644 --- a/drivers/pci/pci-sysfs.c +++ b/drivers/pci/pci-sysfs.c @@ -12,7 +12,7 @@ * Modeled after usb's driverfs.c */ =20 - +#include #include #include #include @@ -230,8 +230,7 @@ static ssize_t current_link_width_show(struct device *d= ev, if (err) return -EINVAL; =20 - return sysfs_emit(buf, "%u\n", - (linkstat & PCI_EXP_LNKSTA_NLW) >> PCI_EXP_LNKSTA_NLW_SHIFT); + return sysfs_emit(buf, "%u\n", FIELD_GET(PCI_EXP_LNKSTA_NLW, linkstat)); } static DEVICE_ATTR_RO(current_link_width); =20 diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 59c01d68c6d5..a8adc34dc86f 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -9,6 +9,7 @@ */ =20 #include +#include #include #include #include @@ -6257,8 +6258,7 @@ u32 pcie_bandwidth_available(struct pci_dev *dev, str= uct pci_dev **limiting_dev, pcie_capability_read_word(dev, PCI_EXP_LNKSTA, &lnksta); =20 next_speed =3D pcie_link_speed[lnksta & PCI_EXP_LNKSTA_CLS]; - next_width =3D (lnksta & PCI_EXP_LNKSTA_NLW) >> - PCI_EXP_LNKSTA_NLW_SHIFT; + next_width =3D FIELD_GET(PCI_EXP_LNKSTA_NLW, lnksta); =20 next_bw =3D next_width * PCIE_SPEED2MBS_ENC(next_speed); =20 @@ -6330,7 +6330,7 @@ enum pcie_link_width pcie_get_width_cap(struct pci_de= v *dev) =20 pcie_capability_read_dword(dev, PCI_EXP_LNKCAP, &lnkcap); if (lnkcap) - return (lnkcap & PCI_EXP_LNKCAP_MLW) >> 4; + return FIELD_GET(PCI_EXP_LNKCAP_MLW, lnkcap); =20 return PCIE_LNK_WIDTH_UNKNOWN; } --=20 2.30.2