From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754087Ab1JKDSe (ORCPT ); Mon, 10 Oct 2011 23:18:34 -0400 Received: from smtp-out.google.com ([216.239.44.51]:23070 "EHLO smtp-out.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751049Ab1JKDSc (ORCPT ); Mon, 10 Oct 2011 23:18:32 -0400 DomainKey-Signature: a=rsa-sha1; s=beta; d=google.com; c=nofws; q=dns; h=subject:to:from:cc:date:message-id:in-reply-to:references: user-agent:mime-version:content-type: content-transfer-encoding:x-system-of-record; b=w1c5P1oLxjrB7IvYZEU0TD9SwOlxXg2hOfo7bNg0HjPirdxiiMZ/D9/jHWxWHF2QB +NaUdnYdM0ra4bbIZN31g== Subject: [PATCH 01/12] PCI: add helpers for building PCI bus resource lists To: linux-pci@vger.kernel.org From: Bjorn Helgaas Cc: linux-kernel@vger.kernel.org Date: Mon, 10 Oct 2011 21:18:30 -0600 Message-ID: <20111011031829.5149.43868.stgit@bhelgaas.mtv.corp.google.com> In-Reply-To: <20111011030726.5149.23793.stgit@bhelgaas.mtv.corp.google.com> References: <20111011030726.5149.23793.stgit@bhelgaas.mtv.corp.google.com> User-Agent: StGit/0.15 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-System-Of-Record: true Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org We'd like to supply a list of resources when we create a new PCI bus, e.g., the root bus under a PCI host bridge. These are helpers for constructing that list. Signed-off-by: Bjorn Helgaas --- drivers/pci/bus.c | 30 +++++++++++++++++++++++++----- include/linux/pci.h | 2 ++ 2 files changed, 27 insertions(+), 5 deletions(-) diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c index 1e2ad92..79fc31a 100644 --- a/drivers/pci/bus.c +++ b/drivers/pci/bus.c @@ -18,6 +18,30 @@ #include "pci.h" +void pci_add_resource(struct list_head *resources, struct resource *res) +{ + struct pci_bus_resource *bus_res; + + bus_res = kzalloc(sizeof(struct pci_bus_resource), GFP_KERNEL); + if (!bus_res) { + printk(KERN_ERR "PCI: can't add bus resource %pR\n", res); + return; + } + + bus_res->res = res; + list_add_tail(&bus_res->list, resources); +} + +void pci_free_resource_list(struct list_head *resources) +{ + struct pci_bus_resource *bus_res, *tmp; + + list_for_each_entry_safe(bus_res, tmp, resources, list) { + list_del(&bus_res->list); + kfree(bus_res); + } +} + void pci_bus_add_resource(struct pci_bus *bus, struct resource *res, unsigned int flags) { @@ -52,16 +76,12 @@ EXPORT_SYMBOL_GPL(pci_bus_resource_n); void pci_bus_remove_resources(struct pci_bus *bus) { - struct pci_bus_resource *bus_res, *tmp; int i; for (i = 0; i < PCI_BRIDGE_RESOURCE_NUM; i++) bus->resource[i] = NULL; - list_for_each_entry_safe(bus_res, tmp, &bus->resources, list) { - list_del(&bus_res->list); - kfree(bus_res); - } + pci_free_resource_list(&bus->resources); } /** diff --git a/include/linux/pci.h b/include/linux/pci.h index 9fc0122..6841e7f 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -907,6 +907,8 @@ int pci_request_selected_regions_exclusive(struct pci_dev *, int, const char *); void pci_release_selected_regions(struct pci_dev *, int); /* drivers/pci/bus.c */ +void pci_add_resource(struct list_head *resources, struct resource *res); +void pci_free_resource_list(struct list_head *resources); void pci_bus_add_resource(struct pci_bus *bus, struct resource *res, unsigned int flags); struct resource *pci_bus_resource_n(const struct pci_bus *bus, int n); void pci_bus_remove_resources(struct pci_bus *bus);