{"id":2231357,"url":"http://patchwork.ozlabs.org/api/patches/2231357/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-pci/patch/20260430161254.40278-2-18255117159@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":"<20260430161254.40278-2-18255117159@163.com>","list_archive_url":null,"date":"2026-04-30T16:12:39","name":"[01/16] PCI: Use FIELD_MODIFY()","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"24e97398b6fa0ff32bba6438aaa0972f8ebae231","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/20260430161254.40278-2-18255117159@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/2231357/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2231357/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=qRoA8vKh;\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-53496-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=\"qRoA8vKh\"","smtp.subspace.kernel.org;\n arc=none smtp.client-ip=220.197.31.4","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 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 4g5zrH6v9Cz1yGq\n\tfor ; Fri, 01 May 2026 02:18:55 +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 237573022681\n\tfor ; Thu, 30 Apr 2026 16:13:52 +0000 (UTC)","from localhost.localdomain (localhost.localdomain [127.0.0.1])\n\tby smtp.subspace.kernel.org (Postfix) with ESMTP id 95EEB44D688;\n\tThu, 30 Apr 2026 16:13:51 +0000 (UTC)","from m16.mail.163.com (m16.mail.163.com [220.197.31.4])\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 059AF44BCAA;\n\tThu, 30 Apr 2026 16:13:48 +0000 (UTC)","from zhb.. (unknown [])\n\tby gzga-smtp-mtada-g0-4 (Coremail) with SMTP id\n _____wDnbymkf_NpTNe+Cg--.31297S3;\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=1777565631; cv=none;\n b=D8BJXWsicwa1WTXnvx0jZifcCdlTYfcNTlKAjluITntup35L0ooJGV8np2Dj+XZB7GQllOWLCSmLV6vMQ5d0Jc0l/NGyv4rEhCQ0UXcLill3pWZ0xGcNxOaWEm18ulx4CEu6VhPxa3gPyoAL+CAC0HWnq7ICdvPZ8BcxdOWlNDY=","ARC-Message-Signature":"i=1; a=rsa-sha256; d=subspace.kernel.org;\n\ts=arc-20240116; t=1777565631; c=relaxed/simple;\n\tbh=PWQa6kmZuv3zdHViw4antbtQC4IL6oOR4srb64P6UUc=;\n\th=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References:\n\t MIME-Version;\n b=c0e7OZPlxPPoLaSwMjwvRiLppJr94zq0G5XDTaaoYLaoHRdOrQJ/T1myTyG19DgPoccVHjikO1EQpHHZyjeYynrPC1C9sgeKpooboolPkYcZWhPJGpYz9dPmXvTTeNLi+hYIvC9Vp/Et+0l0OBqHHQNUYPoCujOBmjicX1sULW0=","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=qRoA8vKh; arc=none smtp.client-ip=220.197.31.4","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=Dn\n\t+bcvrZaMvrCdXQIg31n1Ub72ehyce3TBLdKzywkAM=; b=qRoA8vKhnpFU0xUWHG\n\tx0K+PRWCwbHkTbjf9+Ht/oyw4Yj4dkXr69FDMnNMSnTISAVipXge6TcnI9CUonvN\n\trZD2WXrMKCNANOd/Mu8KRWu28JMAOzUh1pabwDFsC7tm6LdxoFtJjS/egX43vTIe\n\tJx4zyzkAvOee1zTRMkIQ6Xpls=","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 01/16] PCI: Use FIELD_MODIFY()","Date":"Fri, 1 May 2026 00:12:39 +0800","Message-Id":"<20260430161254.40278-2-18255117159@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--.31297S3","X-Coremail-Antispam":"1Uf129KBjvdXoWrur17tw4fAr17Aw4rWF1UGFg_yoW3GFg_ur\n\t1rAr4xCrWjyr17Ca42kw18Jr9YkayxXr4kuFy0yFySyr17J34YgFykXFy8JFW5ur43JryU\n\tC3srWryUuryxZjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT\n\t9fnUUvcSsGvfC2KfnxnUUI43ZEXa7sR_5rcDUUUUU==","X-CM-SenderInfo":"rpryjkyvrrlimvzbiqqrwthudrp/xtbC7AZgBGnzf6bzpAAA3a"},"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/pci.c | 3 +--\n 1 file changed, 1 insertion(+), 2 deletions(-)","diff":"diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c\nindex 8f7cfcc00090..942f70f6a441 100644\n--- a/drivers/pci/pci.c\n+++ b/drivers/pci/pci.c\n@@ -5771,8 +5771,7 @@ int pcix_set_mmrbc(struct pci_dev *dev, int mmrbc)\n \t\tif (v > o && (dev->bus->bus_flags & PCI_BUS_FLAGS_NO_MMRBC))\n \t\t\treturn -EIO;\n \n-\t\tcmd &= ~PCI_X_CMD_MAX_READ;\n-\t\tcmd |= FIELD_PREP(PCI_X_CMD_MAX_READ, v);\n+\t\tFIELD_MODIFY(PCI_X_CMD_MAX_READ, &cmd, v);\n \t\tif (pci_write_config_word(dev, cap + PCI_X_CMD, cmd))\n \t\t\treturn -EIO;\n \t}\n","prefixes":["01/16"]}