From patchwork Mon Oct 28 08:54:24 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oliver O'Halloran X-Patchwork-Id: 11214999 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9F55713B1 for ; Mon, 28 Oct 2019 08:54:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7E089214E0 for ; Mon, 28 Oct 2019 08:54:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="jPPkZL9o" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733262AbfJ1Iyt (ORCPT ); Mon, 28 Oct 2019 04:54:49 -0400 Received: from mail-pf1-f195.google.com ([209.85.210.195]:34684 "EHLO mail-pf1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730954AbfJ1Iys (ORCPT ); Mon, 28 Oct 2019 04:54:48 -0400 Received: by mail-pf1-f195.google.com with SMTP id b128so6488901pfa.1 for ; Mon, 28 Oct 2019 01:54:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=r0Avz0Tu7xGXTMueLduwreUTtk3OeBAu9BGY0062r5s=; b=jPPkZL9oZ+4BBGtNUSParTCdoxGMTcmV/DOHFtVKBM3djJukwwTI4vexOF3xR0d2HK AfzmuPuaeriVHEIOcl2ZkiSMIqu3aynaAXfTOm0LnATEdO5e8ZzX5weS/CRzuCjhc+3j CID7lxWP5wEiNXC86dNOf5HflyUqUNc4THfshMLo5c17+U+glm1wrCe7bEVa15xpYppP UjmbSMBNaoAuOC9q+Y1tqdZGzIKAeupnhs1dfjmIBBaVNCqI+nXU7L05EaPtfsTY7zIB 2zzVKtE8EvYEcg22LyTe0hAHXw67J2dFe+4AuT1ACeZR4KW8ACdq8g1egfTJHgvBB/H+ alEg== 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=r0Avz0Tu7xGXTMueLduwreUTtk3OeBAu9BGY0062r5s=; b=PBt8Hlqyb12RgBs4+7GWsK/B9kr2Rjbk8CENef6SBmCCtQLq5hLwOJsFW420vovRxb ZnHI7akEU5UUrOIEx0gbTwwaXurDl2cOAL4wydob9WVy2aZwZebFX7pF2afb+B46xn/5 n/HKMP67WtYHbFjqDSYkIh1VP2sAcANihlc+3k7D4FvTqgJYcf4cKh7UXjsfe6OzkoJi fX3A5yIDUMFnQVFRFEnBmiw5Z/6Cqb5r0lP7y1zVz1gms0JdhYf9T+JYk2hQLOvkQ8wQ 9KAfts2ymGKOqJDB7YLquBs+JSXHruYKlBaBc4/3dVIEmiT67kHMaFw/+iT+YwNafOEY jbHw== X-Gm-Message-State: APjAAAWJWubxsgcy2n7PkVi64e0berb6ALQLqKZr85tg/XJGaOWuAY4I Y73EwZCWUxQwUSOAIffMlSw= X-Google-Smtp-Source: APXvYqxwWQ+V7hAAVr6qKOUlkaphE8bJSOrJP3OgpvivebAwlApw//DL8Q8ukOBbelij4/ESEo60Tg== X-Received: by 2002:a65:628e:: with SMTP id f14mr19910357pgv.114.1572252888010; Mon, 28 Oct 2019 01:54:48 -0700 (PDT) Received: from wafer.ozlabs.ibm.com ([122.99.82.10]) by smtp.gmail.com with ESMTPSA id l24sm10046115pff.151.2019.10.28.01.54.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 28 Oct 2019 01:54:47 -0700 (PDT) From: Oliver O'Halloran To: linuxppc-dev@lists.ozlabs.org Cc: aik@ozlabs.ru, shawn@anastas.io, linux-pci@vger.kernel.org, Oliver O'Halloran Subject: [PATCH v2 3/3] powerpc/pci: Remove pcibios_setup_bus_devices() Date: Mon, 28 Oct 2019 19:54:24 +1100 Message-Id: <20191028085424.12006-3-oohall@gmail.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20191028085424.12006-1-oohall@gmail.com> References: <20191028085424.12006-1-oohall@gmail.com> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org With the previous patch applied pcibios_setup_device() will always be run when pcibios_bus_add_device() is called. There are several code paths where pcibios_setup_bus_device() is still called (the PowerPC specific PCI hotplug support is one) so with just the previous patch applied the setup can be run multiple times on a device, once before the device is added to the bus and once after. There's no need to run the setup in the early case any more so just remove it entirely. Signed-off-by: Oliver O'Halloran Tested-by: Alexey Kardashevskiy Reviewed-by: Alexey Kardashevskiy --- arch/powerpc/include/asm/pci.h | 1 - arch/powerpc/kernel/pci-common.c | 25 ------------------------- arch/powerpc/kernel/pci-hotplug.c | 1 - arch/powerpc/kernel/pci_of_scan.c | 1 - 4 files changed, 28 deletions(-) diff --git a/arch/powerpc/include/asm/pci.h b/arch/powerpc/include/asm/pci.h index 327567b..63ed7e3 100644 --- a/arch/powerpc/include/asm/pci.h +++ b/arch/powerpc/include/asm/pci.h @@ -113,7 +113,6 @@ extern pgprot_t pci_phys_mem_access_prot(struct file *file, pgprot_t prot); extern resource_size_t pcibios_io_space_offset(struct pci_controller *hose); -extern void pcibios_setup_bus_devices(struct pci_bus *bus); extern void pcibios_setup_bus_self(struct pci_bus *bus); extern void pcibios_setup_phb_io_space(struct pci_controller *hose); extern void pcibios_scan_phb(struct pci_controller *hose); diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c index b89925ed..f8a59d7 100644 --- a/arch/powerpc/kernel/pci-common.c +++ b/arch/powerpc/kernel/pci-common.c @@ -1000,24 +1000,6 @@ int pcibios_add_device(struct pci_dev *dev) return 0; } -void pcibios_setup_bus_devices(struct pci_bus *bus) -{ - struct pci_dev *dev; - - pr_debug("PCI: Fixup bus devices %d (%s)\n", - bus->number, bus->self ? pci_name(bus->self) : "PHB"); - - list_for_each_entry(dev, &bus->devices, bus_list) { - /* Cardbus can call us to add new devices to a bus, so ignore - * those who are already fully discovered - */ - if (pci_dev_is_added(dev)) - continue; - - pcibios_setup_device(dev); - } -} - void pcibios_set_master(struct pci_dev *dev) { /* No special bus mastering setup handling */ @@ -1036,13 +1018,6 @@ void pcibios_fixup_bus(struct pci_bus *bus) } EXPORT_SYMBOL(pcibios_fixup_bus); -void pci_fixup_cardbus(struct pci_bus *bus) -{ - /* Now fixup devices on that bus */ - pcibios_setup_bus_devices(bus); -} - - static int skip_isa_ioresource_align(struct pci_dev *dev) { if (pci_has_flag(PCI_CAN_SKIP_ISA_ALIGN) && diff --git a/arch/powerpc/kernel/pci-hotplug.c b/arch/powerpc/kernel/pci-hotplug.c index fc62c4b..d6a67f8 100644 --- a/arch/powerpc/kernel/pci-hotplug.c +++ b/arch/powerpc/kernel/pci-hotplug.c @@ -134,7 +134,6 @@ void pci_hp_add_devices(struct pci_bus *bus) */ slotno = PCI_SLOT(PCI_DN(dn->child)->devfn); pci_scan_slot(bus, PCI_DEVFN(slotno, 0)); - pcibios_setup_bus_devices(bus); max = bus->busn_res.start; /* * Scan bridges that are already configured. We don't touch diff --git a/arch/powerpc/kernel/pci_of_scan.c b/arch/powerpc/kernel/pci_of_scan.c index f91d7e9..c3024f1 100644 --- a/arch/powerpc/kernel/pci_of_scan.c +++ b/arch/powerpc/kernel/pci_of_scan.c @@ -414,7 +414,6 @@ static void __of_scan_bus(struct device_node *node, struct pci_bus *bus, */ if (!rescan_existing) pcibios_setup_bus_self(bus); - pcibios_setup_bus_devices(bus); /* Now scan child busses */ for_each_pci_bridge(dev, bus)