{"id":2231361,"url":"http://patchwork.ozlabs.org/api/covers/2231361/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-pci/cover/20260430161254.40278-1-18255117159@163.com/","project":{"id":28,"url":"http://patchwork.ozlabs.org/api/projects/28/?format=json","name":"Linux PCI development","link_name":"linux-pci","list_id":"linux-pci.vger.kernel.org","list_email":"linux-pci@vger.kernel.org","web_url":null,"scm_url":null,"webscm_url":null,"list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260430161254.40278-1-18255117159@163.com>","list_archive_url":null,"date":"2026-04-30T16:12:38","name":"[00/16] PCI: Use FIELD_MODIFY() to simplify bitfield operations","submitter":{"id":89937,"url":"http://patchwork.ozlabs.org/api/people/89937/?format=json","name":"Hans Zhang","email":"18255117159@163.com"},"mbox":"http://patchwork.ozlabs.org/project/linux-pci/cover/20260430161254.40278-1-18255117159@163.com/mbox/","series":[{"id":502337,"url":"http://patchwork.ozlabs.org/api/series/502337/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-pci/list/?series=502337","date":"2026-04-30T16:12:44","name":"PCI: Use FIELD_MODIFY() to simplify bitfield operations","version":1,"mbox":"http://patchwork.ozlabs.org/series/502337/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/covers/2231361/comments/","headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-pci@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=163.com header.i=@163.com header.a=rsa-sha256\n header.s=s110527 header.b=aC9MMdHI;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c0a:e001:db::12fc:5321; helo=sea.lore.kernel.org;\n envelope-from=linux-pci+bounces-53500-incoming=patchwork.ozlabs.org@vger.kernel.org;\n receiver=patchwork.ozlabs.org)","smtp.subspace.kernel.org;\n\tdkim=pass (1024-bit key) header.d=163.com header.i=@163.com\n header.b=\"aC9MMdHI\"","smtp.subspace.kernel.org;\n arc=none smtp.client-ip=117.135.210.3","smtp.subspace.kernel.org;\n dmarc=pass (p=none dis=none) header.from=163.com","smtp.subspace.kernel.org;\n spf=pass smtp.mailfrom=163.com"],"Received":["from sea.lore.kernel.org (sea.lore.kernel.org\n [IPv6:2600:3c0a:e001:db::12fc:5321])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4g5zsR28nlz1yJr\n\tfor ; Fri, 01 May 2026 02:19:55 +1000 (AEST)","from smtp.subspace.kernel.org (conduit.subspace.kernel.org\n [100.90.174.1])\n\tby sea.lore.kernel.org (Postfix) with ESMTP id 958373051CAA\n\tfor ; Thu, 30 Apr 2026 16:14:09 +0000 (UTC)","from localhost.localdomain (localhost.localdomain [127.0.0.1])\n\tby smtp.subspace.kernel.org (Postfix) with ESMTP id 6E9C7472791;\n\tThu, 30 Apr 2026 16:13:53 +0000 (UTC)","from m16.mail.163.com (m16.mail.163.com [117.135.210.3])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby smtp.subspace.kernel.org (Postfix) with ESMTPS id 97249358D32;\n\tThu, 30 Apr 2026 16:13:50 +0000 (UTC)","from zhb.. (unknown [])\n\tby gzga-smtp-mtada-g0-4 (Coremail) with SMTP id\n _____wDnbymkf_NpTNe+Cg--.31297S2;\n\tFri, 01 May 2026 00:13:25 +0800 (CST)"],"ARC-Seal":"i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116;\n\tt=1777565633; cv=none;\n b=NtU/bqtnCXhT6+9rA8+BHGyV659lC+spQfThftefAIbYXpNGGkCaK8uz9G8BfuDI48lK+LEBA79yDpsgsAJ1up/uiOLDE2bK9ozwk5h4uJgAkltzDEKiPEmRz1R+7XBE8O+iEZTKnHu1a+wBK3b8TGe+YK4wdhAKknSlduRHq+c=","ARC-Message-Signature":"i=1; a=rsa-sha256; d=subspace.kernel.org;\n\ts=arc-20240116; t=1777565633; c=relaxed/simple;\n\tbh=XYlepJ2zg8v2sfg25HgD6d5qLoil4AuAtFUxxV1iqBg=;\n\th=From:To:Cc:Subject:Date:Message-Id:MIME-Version;\n b=kFJ7BNaWkNAKH/LZ1nJr/VF82dkbdrLSHEAaN9+oxf95jAjNavxuHFlDRwY+St2QHsonE53TAlzfNuqsyzG7ooslrl+xp/9JAOOMGQSSzns9kiZEK4fPFihYo4uZTTWPf7R9+w8emOesLECPGAgvbYIhWnvvz+LWQIUOGaZ2swQ=","ARC-Authentication-Results":"i=1; smtp.subspace.kernel.org;\n dmarc=pass (p=none dis=none) header.from=163.com;\n spf=pass smtp.mailfrom=163.com;\n dkim=pass (1024-bit key) header.d=163.com header.i=@163.com\n header.b=aC9MMdHI; arc=none smtp.client-ip=117.135.210.3","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com;\n\ts=s110527; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=sW\n\tKKnHbzkHVqsnzjDuIPGOuEmQVnvRdiBjV7VHlqOFA=; b=aC9MMdHIv+TtOy2F7C\n\tG2tHMlfePjtWEvpL3Qa/0S/UCvyP/HVCfjGpTnd+SLe5nJvBPO/8m8HbrswTLUDC\n\toY2Oneiermng7oPFuNr2WuFLUtKs+4I2+KY7TDhES4lVrsdxuEZ5VG3xfANO6C9g\n\tE8k3uALjkjsf/mvlgvg6Z8mTk=","From":"Hans Zhang <18255117159@163.com>","To":"bhelgaas@google.com,\n\tlpieralisi@kernel.org,\n\tkwilczynski@kernel.org,\n\tmani@kernel.org,\n\tjingoohan1@gmail.com","Cc":"robh@kernel.org,\n\ts32@nxp.com,\n\tlinux-pci@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org,\n\tHans Zhang <18255117159@163.com>","Subject":"[PATCH 00/16] PCI: Use FIELD_MODIFY() to simplify bitfield operations","Date":"Fri, 1 May 2026 00:12:38 +0800","Message-Id":"<20260430161254.40278-1-18255117159@163.com>","X-Mailer":"git-send-email 2.34.1","Precedence":"bulk","X-Mailing-List":"linux-pci@vger.kernel.org","List-Id":"","List-Subscribe":"","List-Unsubscribe":"","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","X-CM-TRANSID":"_____wDnbymkf_NpTNe+Cg--.31297S2","X-Coremail-Antispam":"1Uf129KBjvJXoW7Ar43Kr17CF1xWFW7tFyDAwb_yoW8uFy3pa\n\ty5KFyxZF18tr45ZF43Xa10kas0vFnYkFyUKa9Fg3srW3ZxCrWjgrWUtFyrtr9xJFW8uFyU\n\tKw1Ut34UGFs3JFUanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2\n\t9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x0pimFAdUUUUU=","X-CM-SenderInfo":"rpryjkyvrrlimvzbiqqrwthudrp/xtbC6wVgBGnzf6XqMgAA3S"},"content":"Replace open-coded bitmask clear + FIELD_PREP() sequences with the\ndedicated FIELD_MODIFY() macro. FIELD_MODIFY() performs the same\noperation but is shorter, less error-prone, and includes compile-time\nchecks to prevent field overflow.\n\nThis series touches the PCI core, PCIe extended capabilities (PTM, IDE,\nTPH, MSI, REBAR, IOV, CardBus), and several DesignWare-based and\nother PCI host controllers. No functional change is intended.\n\nThe patches are split per subsystem or per driver to ease review:\n---\nHi, If the Maintainers think it's not necessary, please ignore it.\n---\n\nHans Zhang (16):\n PCI: Use FIELD_MODIFY()\n PCI/PTM: Use FIELD_MODIFY()\n PCI/IDE: Use FIELD_MODIFY()\n PCI/IOV: Use FIELD_MODIFY()\n PCI/TPH: Use FIELD_MODIFY()\n PCI/MSI: Use FIELD_MODIFY()\n PCI/REBAR: Use FIELD_MODIFY()\n PCI/CARDBUS: Use FIELD_MODIFY()\n PCI: al: Use FIELD_MODIFY()\n PCI: eswin: Use FIELD_MODIFY()\n PCI: s32g: Use FIELD_MODIFY()\n PCI: tegra194: Use FIELD_MODIFY()\n PCI: qcom: Use FIELD_MODIFY()\n PCI: dwc: Use FIELD_MODIFY()\n PCI: mvebu: Use FIELD_MODIFY()\n PCI: mediatek-gen3: Use FIELD_MODIFY()\n\n drivers/pci/controller/dwc/pcie-al.c | 12 ++----\n .../controller/dwc/pcie-designware-debugfs.c | 23 ++++-------\n .../pci/controller/dwc/pcie-designware-ep.c | 3 +-\n drivers/pci/controller/dwc/pcie-designware.c | 3 +-\n drivers/pci/controller/dwc/pcie-eswin.c | 3 +-\n drivers/pci/controller/dwc/pcie-nxp-s32g.c | 3 +-\n drivers/pci/controller/dwc/pcie-qcom-common.c | 40 +++++++------------\n drivers/pci/controller/dwc/pcie-qcom-ep.c | 6 +--\n drivers/pci/controller/dwc/pcie-tegra194.c | 8 ++--\n drivers/pci/controller/pci-mvebu.c | 3 +-\n drivers/pci/controller/pcie-mediatek-gen3.c | 3 +-\n drivers/pci/ide.c | 6 +--\n drivers/pci/iov.c | 3 +-\n drivers/pci/msi/msi.c | 11 ++---\n drivers/pci/pci.c | 3 +-\n drivers/pci/pcie/ptm.c | 3 +-\n drivers/pci/rebar.c | 6 +--\n drivers/pci/setup-cardbus.c | 3 +-\n drivers/pci/tph.c | 10 ++---\n 19 files changed, 51 insertions(+), 101 deletions(-)\n\n\nbase-commit: 3b3bea6d4b9c162f9e555905d96b8c1da67ecd5b"}