{"id":2220098,"url":"http://patchwork.ozlabs.org/api/1.0/patches/2220098/?format=json","project":{"id":28,"url":"http://patchwork.ozlabs.org/api/1.0/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},"msgid":"<20260406104708.1218648-3-18255117159@163.com>","date":"2026-04-06T10:47:07","name":"[v5,2/3] PCI: Move pci_bus_speed2lnkctl2() to public header","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"5f6bdef428927a928d465c98fef322ccbc64412f","submitter":{"id":89937,"url":"http://patchwork.ozlabs.org/api/1.0/people/89937/?format=json","name":"Hans Zhang","email":"18255117159@163.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linux-pci/patch/20260406104708.1218648-3-18255117159@163.com/mbox/","series":[{"id":498838,"url":"http://patchwork.ozlabs.org/api/1.0/series/498838/?format=json","date":"2026-04-06T10:47:06","name":"PCI: Refactor PCIe speed validation and conversion functions","version":5,"mbox":"http://patchwork.ozlabs.org/series/498838/mbox/"}],"check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2220098/checks/","tags":{},"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=blLQMJQd;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c04:e001:36c::12fc:5321; helo=tor.lore.kernel.org;\n envelope-from=linux-pci+bounces-51946-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=\"blLQMJQd\"","smtp.subspace.kernel.org;\n arc=none smtp.client-ip=117.135.210.5","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 tor.lore.kernel.org (tor.lore.kernel.org\n [IPv6:2600:3c04:e001:36c::12fc:5321])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature ECDSA (secp384r1) server-digest SHA384)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fq5fZ4TYFz1xy1\n\tfor ; Mon, 06 Apr 2026 20:48:54 +1000 (AEST)","from smtp.subspace.kernel.org (conduit.subspace.kernel.org\n [100.90.174.1])\n\tby tor.lore.kernel.org (Postfix) with ESMTP id 4CD42301D962\n\tfor ; Mon, 6 Apr 2026 10:48:10 +0000 (UTC)","from localhost.localdomain (localhost.localdomain [127.0.0.1])\n\tby smtp.subspace.kernel.org (Postfix) with ESMTP id 404A12C028F;\n\tMon, 6 Apr 2026 10:48:01 +0000 (UTC)","from m16.mail.163.com (m16.mail.163.com [117.135.210.5])\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 0959F42048;\n\tMon, 6 Apr 2026 10:47:58 +0000 (UTC)","from Precision-7960.. 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arc=none smtp.client-ip=117.135.210.5","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=6m\n\tMCrDR47EQMAbgME22s7g/ZL+FO83j+pRNlGGThkDM=; b=blLQMJQdBJzGMyIPNN\n\tX76MsQyuw1rlx+rsK7tEbxgtt38lWDapLabgxOGcJ9sNngN6LoR9eTn9l/TM7rfT\n\tK8de32Km8jFWsFgpPzBi75xdcu28S4b2rUlAmC311P/rGnn1BBSY9ViV2qDs1QfR\n\tGqew97PHmn8nZNFW/71bne2B8=","From":"Hans Zhang <18255117159@163.com>","To":"bhelgaas@google.com,\n\tlpieralisi@kernel.org,\n\tkw@linux.com,\n\tkwilczynski@kernel.org,\n\tmani@kernel.org,\n\tilpo.jarvinen@linux.intel.com,\n\tjingoohan1@gmail.com","Cc":"robh@kernel.org,\n\tlinux-pci@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org,\n\tHans Zhang <18255117159@163.com>","Subject":"[PATCH v5 2/3] PCI: Move pci_bus_speed2lnkctl2() to public header","Date":"Mon, 6 Apr 2026 18:47:07 +0800","Message-Id":"<20260406104708.1218648-3-18255117159@163.com>","X-Mailer":"git-send-email 2.34.1","In-Reply-To":"<20260406104708.1218648-1-18255117159@163.com>","References":"<20260406104708.1218648-1-18255117159@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":"PigvCgDXX3Qwj9NpKHYUAA--.1246S4","X-Coremail-Antispam":"1Uf129KBjvJXoW7Ww4UCw4ktF48ury7Kw1kAFb_yoW5JFy7pa\n\t9xCFy5AF18A3W3AFZ0g3WkXa45XFn3GFWUCr43W393XFy3A395Ga4ayFWFvryaqrW0kryr\n\tJ3WUJF48C3WUKF7anT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2\n\t9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x0piZNVPUUUUU=","X-CM-SenderInfo":"rpryjkyvrrlimvzbiqqrwthudrp/xtbCxBdA42nTjzfV5AAA3D"},"content":"Move the static array-based pci_bus_speed2lnkctl2() function from\nbwctrl.c to pci.h as a public inline function.\n\nThis provides efficient O(1) speed-to-LNKCTL2 value conversion using\nstatic array lookup, maintaining optimal performance while enabling\ncode reuse by other PCIe drivers.\n\nSigned-off-by: Hans Zhang <18255117159@163.com>\n---\n drivers/pci/pci.h | 17 +++++++++++++++++\n drivers/pci/pcie/bwctrl.c | 17 -----------------\n 2 files changed, 17 insertions(+), 17 deletions(-)","diff":"diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h\nindex f0a082bfd6f1..db91878a86ac 100644\n--- a/drivers/pci/pci.h\n+++ b/drivers/pci/pci.h\n@@ -611,6 +611,23 @@ static inline bool pcie_valid_speed(enum pci_bus_speed speed)\n \treturn (speed >= PCIE_SPEED_2_5GT) && (speed <= PCIE_SPEED_64_0GT);\n }\n \n+static inline u16 pci_bus_speed2lnkctl2(enum pci_bus_speed speed)\n+{\n+\tstatic const u8 speed_conv[] = {\n+\t\t[PCIE_SPEED_2_5GT] = PCI_EXP_LNKCTL2_TLS_2_5GT,\n+\t\t[PCIE_SPEED_5_0GT] = PCI_EXP_LNKCTL2_TLS_5_0GT,\n+\t\t[PCIE_SPEED_8_0GT] = PCI_EXP_LNKCTL2_TLS_8_0GT,\n+\t\t[PCIE_SPEED_16_0GT] = PCI_EXP_LNKCTL2_TLS_16_0GT,\n+\t\t[PCIE_SPEED_32_0GT] = PCI_EXP_LNKCTL2_TLS_32_0GT,\n+\t\t[PCIE_SPEED_64_0GT] = PCI_EXP_LNKCTL2_TLS_64_0GT,\n+\t};\n+\n+\tif (WARN_ON_ONCE(!pcie_valid_speed(speed)))\n+\t\treturn 0;\n+\n+\treturn speed_conv[speed];\n+}\n+\n static inline int pcie_dev_speed_mbps(enum pci_bus_speed speed)\n {\n \tswitch (speed) {\ndiff --git a/drivers/pci/pcie/bwctrl.c b/drivers/pci/pcie/bwctrl.c\nindex ea82e326f164..d48021bfd844 100644\n--- a/drivers/pci/pcie/bwctrl.c\n+++ b/drivers/pci/pcie/bwctrl.c\n@@ -48,23 +48,6 @@ struct pcie_bwctrl_data {\n /* Prevent port removal during Link Speed changes. */\n static DECLARE_RWSEM(pcie_bwctrl_setspeed_rwsem);\n \n-static u16 pci_bus_speed2lnkctl2(enum pci_bus_speed speed)\n-{\n-\tstatic const u8 speed_conv[] = {\n-\t\t[PCIE_SPEED_2_5GT] = PCI_EXP_LNKCTL2_TLS_2_5GT,\n-\t\t[PCIE_SPEED_5_0GT] = PCI_EXP_LNKCTL2_TLS_5_0GT,\n-\t\t[PCIE_SPEED_8_0GT] = PCI_EXP_LNKCTL2_TLS_8_0GT,\n-\t\t[PCIE_SPEED_16_0GT] = PCI_EXP_LNKCTL2_TLS_16_0GT,\n-\t\t[PCIE_SPEED_32_0GT] = PCI_EXP_LNKCTL2_TLS_32_0GT,\n-\t\t[PCIE_SPEED_64_0GT] = PCI_EXP_LNKCTL2_TLS_64_0GT,\n-\t};\n-\n-\tif (WARN_ON_ONCE(!pcie_valid_speed(speed)))\n-\t\treturn 0;\n-\n-\treturn speed_conv[speed];\n-}\n-\n static inline u16 pcie_supported_speeds2target_speed(u8 supported_speeds)\n {\n \treturn __fls(supported_speeds);\n","prefixes":["v5","2/3"]}