From patchwork Sun May 5 00:22:57 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Herrenschmidt X-Patchwork-Id: 241495 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from ozlabs.org (localhost [IPv6:::1]) by ozlabs.org (Postfix) with ESMTP id 4290C2C0295 for ; Sun, 5 May 2013 10:23:31 +1000 (EST) Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 2EB4C2C00C0 for ; Sun, 5 May 2013 10:23:04 +1000 (EST) Received: from [127.0.0.1] (localhost.localdomain [127.0.0.1]) by gate.crashing.org (8.14.1/8.13.8) with ESMTP id r450MwrC009734 for ; Sat, 4 May 2013 19:23:00 -0500 Message-ID: <1367713377.11982.24.camel@pasglop> Subject: [PATCH] powerpc/pci: Don't add bogus empty resources to PHBs From: Benjamin Herrenschmidt To: linuxppc-dev@lists.ozlabs.org Date: Sun, 05 May 2013 10:22:57 +1000 X-Mailer: Evolution 3.6.2-0ubuntu0.1 Mime-Version: 1.0 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" When converting to use the new pci_add_resource_offset() we didn't properly account for empty resources (0 flags) and add those bogons to the PHBs. The result is some annoying messages in the log. Signed-off-by: Benjamin Herrenschmidt --- BTW. Anybody knows if we really need those ppc32 workarounds anymore ? They smell like ancient pre-device-tree crap... if a bridge is missing a window in its "ranges" property it should probably not have it exposed to the generic code nowadays. diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c index f325dc9..5775ea9 100644 --- a/arch/powerpc/kernel/pci-common.c +++ b/arch/powerpc/kernel/pci-common.c @@ -1532,12 +1532,16 @@ static void pcibios_setup_phb_resources(struct pci_controller *hose, res->flags = IORESOURCE_IO; #endif /* CONFIG_PPC32 */ } + if (res->flags) { + pr_debug("PCI: PHB IO resource = %016llx-%016llx [%lx]\n", + (unsigned long long)res->start, + (unsigned long long)res->end, + (unsigned long)res->flags); + pci_add_resource_offset(resources, res, pcibios_io_space_offset(hose)); - pr_debug("PCI: PHB IO resource = %016llx-%016llx [%lx]\n", - (unsigned long long)res->start, - (unsigned long long)res->end, - (unsigned long)res->flags); - pci_add_resource_offset(resources, res, pcibios_io_space_offset(hose)); + pr_debug("PCI: PHB IO offset = %08lx\n", + (unsigned long)hose->io_base_virt - _IO_BASE); + } /* Hookup PHB Memory resources */ for (i = 0; i < 3; ++i) { @@ -1555,19 +1559,17 @@ static void pcibios_setup_phb_resources(struct pci_controller *hose, res->flags = IORESOURCE_MEM; #endif /* CONFIG_PPC32 */ } - - pr_debug("PCI: PHB MEM resource %d = %016llx-%016llx [%lx]\n", i, - (unsigned long long)res->start, - (unsigned long long)res->end, - (unsigned long)res->flags); - pci_add_resource_offset(resources, res, hose->pci_mem_offset); + if (res->flags) { + pr_debug("PCI: PHB MEM resource %d = %016llx-%016llx [%lx]\n", i, + (unsigned long long)res->start, + (unsigned long long)res->end, + (unsigned long)res->flags); + pci_add_resource_offset(resources, res, hose->pci_mem_offset); + } } pr_debug("PCI: PHB MEM offset = %016llx\n", (unsigned long long)hose->pci_mem_offset); - pr_debug("PCI: PHB IO offset = %08lx\n", - (unsigned long)hose->io_base_virt - _IO_BASE); - } /*