{"id":2231371,"url":"http://patchwork.ozlabs.org/api/patches/2231371/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-pci/patch/20260430161254.40278-5-18255117159@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":"<20260430161254.40278-5-18255117159@163.com>","list_archive_url":null,"date":"2026-04-30T16:12:42","name":"[04/16] PCI/IOV: Use FIELD_MODIFY()","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"148c83a619c318b9984b1a6ba6c532da44fb6837","submitter":{"id":89937,"url":"http://patchwork.ozlabs.org/api/people/89937/?format=json","name":"Hans Zhang","email":"18255117159@163.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linux-pci/patch/20260430161254.40278-5-18255117159@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/patches/2231371/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2231371/checks/","tags":{},"related":[],"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=I91tr3Dn;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c15:e001:75::12fc:5321; helo=sin.lore.kernel.org;\n envelope-from=linux-pci+bounces-53504-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=\"I91tr3Dn\"","smtp.subspace.kernel.org;\n arc=none smtp.client-ip=117.135.210.4","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 sin.lore.kernel.org (sin.lore.kernel.org\n [IPv6:2600:3c15:e001:75::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 4g5zxV1nNYz1xqf\n\tfor ; Fri, 01 May 2026 02:23:26 +1000 (AEST)","from smtp.subspace.kernel.org (conduit.subspace.kernel.org\n [100.90.174.1])\n\tby sin.lore.kernel.org (Postfix) with ESMTP id 9B0BE3023B9A\n\tfor ; Thu, 30 Apr 2026 16:14:54 +0000 (UTC)","from localhost.localdomain (localhost.localdomain [127.0.0.1])\n\tby smtp.subspace.kernel.org (Postfix) with ESMTP id C33DD478E39;\n\tThu, 30 Apr 2026 16:14:00 +0000 (UTC)","from m16.mail.163.com (m16.mail.163.com [117.135.210.4])\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 D92F046AF0F;\n\tThu, 30 Apr 2026 16:13:57 +0000 (UTC)","from zhb.. (unknown [])\n\tby gzga-smtp-mtada-g0-4 (Coremail) with SMTP id\n _____wDnbymkf_NpTNe+Cg--.31297S6;\n\tFri, 01 May 2026 00:13:27 +0800 (CST)"],"ARC-Seal":"i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116;\n\tt=1777565640; cv=none;\n b=SM6S0EZbPdS1PZm4SuHY3HxnPlch+/DKMYMTrb3geQ+uwDyfXstv0Foo1MvgVX7lN+A8oiQoeOMt07htWd1JFnHbQeKPhFU6TaLyZGatpWvbqWs4ymq1Y2Exk+qB879Zm2UWlgnDlhNHLQX60E1b06jqVjlDCuIxIJ4LfMOoeCw=","ARC-Message-Signature":"i=1; a=rsa-sha256; d=subspace.kernel.org;\n\ts=arc-20240116; t=1777565640; c=relaxed/simple;\n\tbh=BH20/sZFBY5SJOCp+kiWdmJX7w80ygTDJBjP+F2Pzb8=;\n\th=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References:\n\t MIME-Version;\n b=fXqknbw6n51gqqhiM//20r4caBD2NRmixpZGpVyN8cNkYMKUzIr7jYB19KUEZSc9UnUxjJU6yo3qpAlZLxtW7Fb5GMXXLCX8Ko1mEMKT1v/gGDxMMwab0eLiH5MVhgH0HY+oVh0PP4VJPcD0Jnjws558YXPdB27lqv8WvjcIbR0=","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=I91tr3Dn; arc=none smtp.client-ip=117.135.210.4","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=S2\n\tsAL3YnLBb8rVf9/WlGtBa/nywRSHxKsLjvU4T4r2Q=; b=I91tr3DndFooEJAV51\n\ty/mkqdw1Kvlg87pvT7FOjfCxAOb8jDrFVj7CzjgPgrFxjCX1PIWww5TILhzye52R\n\t0nucLwF+dVrZ3maHpwlNhJrSjKHi9rcjw6QHL1aV37xKPFxL/rZcsJGsmsssq9S/\n\tnp1jad8jft3tI6UAHGRg+mAuE=","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 04/16] PCI/IOV: Use FIELD_MODIFY()","Date":"Fri, 1 May 2026 00:12:42 +0800","Message-Id":"<20260430161254.40278-5-18255117159@163.com>","X-Mailer":"git-send-email 2.34.1","In-Reply-To":"<20260430161254.40278-1-18255117159@163.com>","References":"<20260430161254.40278-1-18255117159@163.com>","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--.31297S6","X-Coremail-Antispam":"1Uf129KBjvdXoWrur17tw47Wr45Gr43Cw4UJwb_yoWfCFb_Wr\n\t18G34xGr1UAr1UGw4Fkr1Svr9Y9ws0qa1v9a40ga45u3s5Xrn8Wryvv3yvkF48uw43CrW3\n\tA3yUXr15u3yIgjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT\n\t9fnUUvcSsGvfC2KfnxnUUI43ZEXa7sRiznQUUUUUU==","X-CM-SenderInfo":"rpryjkyvrrlimvzbiqqrwthudrp/xtbC7AdgBGnzf6fz6AAA3W"},"content":"Use FIELD_MODIFY() to remove open-coded bit manipulation.\nNo functional change intended.\n\nSigned-off-by: Hans Zhang <18255117159@163.com>\n---\n drivers/pci/iov.c | 3 +--\n 1 file changed, 1 insertion(+), 2 deletions(-)","diff":"diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c\nindex 91ac4e37ecb9..fdae70abe804 100644\n--- a/drivers/pci/iov.c\n+++ b/drivers/pci/iov.c\n@@ -946,8 +946,7 @@ static void sriov_restore_vf_rebar_state(struct pci_dev *dev)\n \t\tpci_read_config_dword(dev, pos + PCI_VF_REBAR_CTRL, &ctrl);\n \t\tbar_idx = FIELD_GET(PCI_VF_REBAR_CTRL_BAR_IDX, ctrl);\n \t\tsize = pci_rebar_bytes_to_size(dev->sriov->barsz[bar_idx]);\n-\t\tctrl &= ~PCI_VF_REBAR_CTRL_BAR_SIZE;\n-\t\tctrl |= FIELD_PREP(PCI_VF_REBAR_CTRL_BAR_SIZE, size);\n+\t\tFIELD_MODIFY(PCI_VF_REBAR_CTRL_BAR_SIZE, &ctrl, size);\n \t\tpci_write_config_dword(dev, pos + PCI_VF_REBAR_CTRL, ctrl);\n \t}\n }\n","prefixes":["04/16"]}