From patchwork Fri Apr 16 20:58:53 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= X-Patchwork-Id: 12208821 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 47CBEC433ED for ; Fri, 16 Apr 2021 20:59:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0D35A613E0 for ; Fri, 16 Apr 2021 20:59:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343947AbhDPU7o (ORCPT ); Fri, 16 Apr 2021 16:59:44 -0400 Received: from mail-ej1-f51.google.com ([209.85.218.51]:39509 "EHLO mail-ej1-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1343954AbhDPU7k (ORCPT ); Fri, 16 Apr 2021 16:59:40 -0400 Received: by mail-ej1-f51.google.com with SMTP id v6so42706287ejo.6 for ; Fri, 16 Apr 2021 13:59:15 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=imUCWi5f0L0u44r4h5ePrxjMjkXDq587H6qCYb8kQvE=; b=PxclICk0vbACZjOXqP3DScizUQO0k0h26EHTBNUQZSDNYL7oUbQ9qK5GHZXmO9BLf1 bTj4VzYThLqdPctiwz9fAK8EfHajZV+sVUh26K5jOGmg0xJbm4WaWnUfwzPoIB02mFE+ 0BXe3jCvweO62zveJHRNejqOsLZ5vg9xXiVyO1rkVZ5BGSrLHw073VjlhdY0H7HcH/wR lSlyOIkkzOVWTuPDmbfbdB0h9djW9romjs+rQKubMS9YMTqZPpJgwaWLpmc3q/sZGaA9 aYKMi7kK/YclR/3wIXdncl6RpaBN8zLkayrcROV+QhjXrVJmvbs7YFyltAlQvslC5ZZI r1Jw== X-Gm-Message-State: AOAM530B+7SP3TODVxMf7nh642CKjHYAhnCyzZgzcga2v6a1S33ZvxEo M9JILZCCIuHLLPV5u7FQoas= X-Google-Smtp-Source: ABdhPJw5PQ1ZoXzIDd+BYON0gNtmEdml9gLAKllaEqpuZ/gPEM5mL2RMO9aizP/o61O5o4l6bky/Cg== X-Received: by 2002:a17:907:f93:: with SMTP id kb19mr9993175ejc.207.1618606754838; Fri, 16 Apr 2021 13:59:14 -0700 (PDT) Received: from workstation.lan ([95.155.85.46]) by smtp.gmail.com with ESMTPSA id n11sm5103864ejg.43.2021.04.16.13.59.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 16 Apr 2021 13:59:14 -0700 (PDT) From: =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= To: Bjorn Helgaas Cc: =?utf-8?q?Pali_Roh=C3=A1r?= , "Oliver O'Halloran" , Greg Kroah-Hartman , Daniel Vetter , Joe Perches , Dan Williams , Mauro Carvalho Chehab , David Sterba , linux-pci@vger.kernel.org Subject: [PATCH 17/20] PCI: Rearrange attributes from the pci_bridge_attr_group Date: Fri, 16 Apr 2021 20:58:53 +0000 Message-Id: <20210416205856.3234481-18-kw@linux.com> X-Mailer: git-send-email 2.31.0 In-Reply-To: <20210416205856.3234481-1-kw@linux.com> References: <20210416205856.3234481-1-kw@linux.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org When new sysfs objects were added to the PCI device over time, the code that implemented new attributes has been added in many different places in the pci-sysfs.c file. This makes it hard to read and also hard to find relevant code. Thus, collect all the attributes that are part of the "pci_bridge_attr_group" attribute group together and move to the top of the file sorting everything attribute in the order of use. No functional change intended. Suggested-by: Bjorn Helgaas Signed-off-by: Krzysztof Wilczyński --- drivers/pci/pci-sysfs.c | 108 ++++++++++++++++++++-------------------- 1 file changed, 54 insertions(+), 54 deletions(-) diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c index bf909e9a9528..1899c24081f7 100644 --- a/drivers/pci/pci-sysfs.c +++ b/drivers/pci/pci-sysfs.c @@ -886,6 +886,60 @@ static const struct attribute_group pci_dev_hp_attr_group = { .is_visible = pci_dev_hp_attr_is_visible, }; +static ssize_t subordinate_bus_number_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct pci_dev *pdev = to_pci_dev(dev); + u8 sub_bus; + int err; + + err = pci_read_config_byte(pdev, PCI_SUBORDINATE_BUS, &sub_bus); + if (err) + return -EINVAL; + + return sysfs_emit(buf, "%u\n", sub_bus); +} +static DEVICE_ATTR_RO(subordinate_bus_number); + +static ssize_t secondary_bus_number_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct pci_dev *pdev = to_pci_dev(dev); + u8 sec_bus; + int err; + + err = pci_read_config_byte(pdev, PCI_SECONDARY_BUS, &sec_bus); + if (err) + return -EINVAL; + + return sysfs_emit(buf, "%u\n", sec_bus); +} +static DEVICE_ATTR_RO(secondary_bus_number); + +static struct attribute *pci_bridge_attrs[] = { + &dev_attr_subordinate_bus_number.attr, + &dev_attr_secondary_bus_number.attr, + NULL, +}; + +static umode_t pci_bridge_attr_is_visible(struct kobject *kobj, + struct attribute *a, int n) +{ + struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj)); + + if (!pci_is_bridge(pdev)) + return 0; + + return a->mode; +} + +static const struct attribute_group pci_bridge_attr_group = { + .attrs = pci_bridge_attrs, + .is_visible = pci_bridge_attr_is_visible, +}; + /* * PCI Bus Class Devices */ @@ -952,38 +1006,6 @@ static ssize_t current_link_width_show(struct device *dev, } static DEVICE_ATTR_RO(current_link_width); -static ssize_t secondary_bus_number_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct pci_dev *pdev = to_pci_dev(dev); - u8 sec_bus; - int err; - - err = pci_read_config_byte(pdev, PCI_SECONDARY_BUS, &sec_bus); - if (err) - return -EINVAL; - - return sysfs_emit(buf, "%u\n", sec_bus); -} -static DEVICE_ATTR_RO(secondary_bus_number); - -static ssize_t subordinate_bus_number_show(struct device *dev, - struct device_attribute *attr, - char *buf) -{ - struct pci_dev *pdev = to_pci_dev(dev); - u8 sub_bus; - int err; - - err = pci_read_config_byte(pdev, PCI_SUBORDINATE_BUS, &sub_bus); - if (err) - return -EINVAL; - - return sysfs_emit(buf, "%u\n", sub_bus); -} -static DEVICE_ATTR_RO(subordinate_bus_number); - static ssize_t rescan_store(struct bus_type *bus, const char *buf, size_t count) { bool rescan; @@ -1041,12 +1063,6 @@ static ssize_t bus_rescan_store(struct device *dev, static struct device_attribute dev_attr_bus_rescan = __ATTR(rescan, 0200, NULL, bus_rescan_store); -static struct attribute *pci_bridge_attrs[] = { - &dev_attr_subordinate_bus_number.attr, - &dev_attr_secondary_bus_number.attr, - NULL, -}; - static struct attribute *pcie_dev_attrs[] = { &dev_attr_current_link_speed.attr, &dev_attr_current_link_width.attr, @@ -1539,17 +1555,6 @@ static int __init pci_sysfs_init(void) } late_initcall(pci_sysfs_init); -static umode_t pci_bridge_attr_is_visible(struct kobject *kobj, - struct attribute *a, int n) -{ - struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj)); - - if (!pci_is_bridge(pdev)) - return 0; - - return a->mode; -} - static umode_t pcie_dev_attr_is_visible(struct kobject *kobj, struct attribute *a, int n) { @@ -1576,11 +1581,6 @@ const struct attribute_group *pci_dev_groups[] = { NULL, }; -static const struct attribute_group pci_bridge_attr_group = { - .attrs = pci_bridge_attrs, - .is_visible = pci_bridge_attr_is_visible, -}; - static const struct attribute_group pcie_dev_attr_group = { .attrs = pcie_dev_attrs, .is_visible = pcie_dev_attr_is_visible,