Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752469AbZLABUO (ORCPT ); Mon, 30 Nov 2009 20:20:14 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752196AbZLABUM (ORCPT ); Mon, 30 Nov 2009 20:20:12 -0500 Received: from hera.kernel.org ([140.211.167.34]:41162 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752107AbZLABUL (ORCPT ); Mon, 30 Nov 2009 20:20:11 -0500 Message-ID: <4B146F0D.7050203@kernel.org> Date: Mon, 30 Nov 2009 17:19:09 -0800 From: Yinghai Lu User-Agent: Thunderbird 2.0.0.23 (X11/20090817) MIME-Version: 1.0 To: Kenji Kaneshige , Jesse Barnes , "Eric W. Biederman" , Alex Chiang , Bjorn Helgaas CC: Ingo Molnar , "linux-kernel@vger.kernel.org" , "linux-pci@vger.kernel.org" , Ivan Kokshaysky Subject: [PATCH 1/2] pci: pci_bridge_release_res References: <4ADEB601.8020200@kernel.org> <4AE57976.4060107@jp.fujitsu.com> <4AE5E37F.8070707@kernel.org> <4AE5EFDB.2060908@kernel.org> <4AE80170.6030402@jp.fujitsu.com> <4AE88305.8020207@kernel.org> <4AE899A0.3020006@kernel.org> <4AE95247.8080401@jp.fujitsu.com> <4AE952B9.1010603@kernel.org> <4AE9588E.90708@jp.fujitsu.com> <4AE9657F.7010302@kernel.org> <4AE965D9.9040702@kernel.org> <20091104093044.17ab628a@jbarnes-piketon> <4AF1CD79.4010602@kernel.org> <4AF22CF1.1020508@kernel.org> <4AF22D26.4070500@kernel.org> <4AF508F0.9060105@kernel.org> <4AF91F54.10507@jp.fujitsu.com> <4AF936DB.1030309@kernel.org> <4AFCF7D8.1090207@jp.fujitsu.com> <4AFCFC0D.4030002@kernel.org> <4AFD19DA.7010602@jp.fujitsu.com> <4AFE6F39.5080505@kernel.org> <4B0B321E.4010103@jp.fujitsu.com> <4B0B335E.1070809@kernel.org> <4B0B3C13.9030502@jp.fujit! su.com> <4B0C69AD.3030106@kernel. org> <4B0D13EB.9010403@jp.fujitsu.com> <4B10D084.8070608@kernel.org> <4B10D30D.3020108@ker! nel.org> In-Reply-To: <4B10D30D.3020108@kernel.org> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2338 Lines: 83 need to apply this after 9/9 patchset prepare for pciehp_realloc it will clear the resource size for bridge Signed-off-by: Yinghai Lu --- drivers/pci/setup-bus.c | 42 ++++++++++++++++++++++++++++++++++++++++++ include/linux/pci.h | 1 + 2 files changed, 43 insertions(+) Index: linux-2.6/drivers/pci/setup-bus.c =================================================================== --- linux-2.6.orig/drivers/pci/setup-bus.c +++ linux-2.6/drivers/pci/setup-bus.c @@ -739,6 +739,48 @@ static void __ref __pci_bridge_assign_re break; } } + +void pci_bridge_release_res(struct pci_bus *bus) +{ + int idx; + bool changed = false; + struct pci_dev *dev; + struct resource *r; + + /* The root bus? */ + if (!bus->self) + return; + + /* for pci bridges res only */ + dev = bus->self; + if ((dev->class >> 8) != PCI_CLASS_BRIDGE_PCI) + return; + + for (idx = PCI_BRIDGE_RESOURCES; idx < PCI_BRIDGE_RESOURCES + 3; + idx++) { + r = &dev->resource[idx]; + if (!r->parent) + continue; + + /* if there are children under that, we should not release it */ + if (r->child) + continue; + + if (!release_resource(r)) { + dev_printk(KERN_DEBUG, &dev->dev, + "resource %d %pR released\n", idx, r); + /* old size is not kept */ + r->start = 0; + r->end = 0; + r->flags = 0; + changed = true; + } + } + + if (changed) + pci_setup_bridge(bus); +} + static void release_children_resource(struct resource *r) { struct resource *p; Index: linux-2.6/include/linux/pci.h =================================================================== --- linux-2.6.orig/include/linux/pci.h +++ linux-2.6/include/linux/pci.h @@ -767,6 +767,7 @@ int pci_vpd_truncate(struct pci_dev *dev void pci_bus_assign_resources(const struct pci_bus *bus); void pci_bus_size_bridges(struct pci_bus *bus); int pci_claim_resource(struct pci_dev *, int); +void pci_bridge_release_res(struct pci_bus *bus); void pci_assign_unassigned_resources(void); void pci_assign_unassigned_bridge_resources(struct pci_dev *bridge); void pdev_enable_device(struct pci_dev *); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/