From patchwork Tue Dec 7 10:49:20 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sergio Paracuellos X-Patchwork-Id: 12661571 X-Patchwork-Delegate: lorenzo.pieralisi@arm.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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 66861C433EF for ; Tue, 7 Dec 2021 10:49:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235336AbhLGKxB (ORCPT ); Tue, 7 Dec 2021 05:53:01 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49476 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235334AbhLGKxA (ORCPT ); Tue, 7 Dec 2021 05:53:00 -0500 Received: from mail-wr1-x431.google.com (mail-wr1-x431.google.com [IPv6:2a00:1450:4864:20::431]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6024DC061746; Tue, 7 Dec 2021 02:49:30 -0800 (PST) Received: by mail-wr1-x431.google.com with SMTP id t9so28554077wrx.7; Tue, 07 Dec 2021 02:49:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=X+bN8SexTbCT5j9k/6OymCyhRoZPMwyN555jgSjh4EQ=; b=P1lAEmSty9+oVN7ngYjQ4zFH+Wx/uOVSwAHA63Hqcy888EZH8enMV/Tmlvz8hET7OV 0DJqXbZB2VVbEieInVsSFnETOol0DedILeRicm7yzom7m+HH2zqmlf892OTXLnJ3c7WA 8nDGPgGcATwR/PQtOB5myEi/zMTL2oCElqPk4CV8OpGj5FJ9UqI7PXsmHQHsFYsXCU8T 53jno+TEowDJCj+HDQo6DIAmObGQ95cAeIs04Az5mKCtoksEfwPiaMuRj2jOGlck9fpM GMydobjL15YMFP/UU0x6YIQMsVksyGQHztt4bX7l8EOEJSHTqFpXp6uGuuXaymDve+bh UxFw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=X+bN8SexTbCT5j9k/6OymCyhRoZPMwyN555jgSjh4EQ=; b=YDJwPklf+lZHVbUfNS29C7tNT6rRhn7fnlKaLDL5RnClxRmjUrSdpzauzbQ35cc/Co MxWKHb71iWVPlmA0VSNKJYDIhD6k78a7oo2OlolvU+MBQkW7p/mH+3eW6Q4woPsX+jMs fpq/xcescg/2F0BpdCjHqfxoBANLfdJ4SgKz5gJg0H9G+X5tqHx0nhP2F0+uF9nv3A1e tnQNdwkqF7xLysVDyoDdOzZ8/DVWzHtKLaXv3hozlFcU0szHM2KDVCvZqTJSXLVGodG0 I27HJfOgzKRwZOQtoqMNxUyoIZZrzPqx89CKrz9y9F1l2lcjOAVBQjRH/6yz+PpFY2AL QZIg== X-Gm-Message-State: AOAM531LXRHvwoqRupPeIol817DEVYzaiYS5BQsp06ZSaQzSztgQfQGl WrLyWSIC1I+B1Ea4y05oyAUUul02nWw= X-Google-Smtp-Source: ABdhPJzaqN6ETNDykpM2QqXb22kDi1lRS7wiK0GqelsIplLzN1LcAIybRtvPj4y24KxfKcJKsWWSMQ== X-Received: by 2002:a5d:6101:: with SMTP id v1mr51625072wrt.598.1638874168667; Tue, 07 Dec 2021 02:49:28 -0800 (PST) Received: from localhost.localdomain (27.red-83-54-181.dynamicip.rima-tde.net. [83.54.181.27]) by smtp.gmail.com with ESMTPSA id z6sm13958561wrm.93.2021.12.07.02.49.27 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Tue, 07 Dec 2021 02:49:27 -0800 (PST) From: Sergio Paracuellos To: linux-pci@vger.kernel.org Cc: tsbogend@alpha.franken.de, lorenzo.pieralisi@arm.com, bhelgaas@google.com, linux@roeck-us.net, linux-kernel@vger.kernel.org, Arnd Bergmann Subject: [PATCH v3 1/5] PCI: Let pcibios_root_bridge_prepare() access to 'bridge->windows' Date: Tue, 7 Dec 2021 11:49:20 +0100 Message-Id: <20211207104924.21327-2-sergio.paracuellos@gmail.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20211207104924.21327-1-sergio.paracuellos@gmail.com> References: <20211207104924.21327-1-sergio.paracuellos@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org When function pci_register_host_bridge() is called, 'bridge->windows' are already available. However this windows are being moved temporarily from there. To let pcibios_root_bridge_prepare() to have access to this windows move this windows movement after call this function. This is interesting for MIPS ralink mt7621 platform to be able to properly set I/O coherence units with this information and avoid custom MIPS code in generic PCIe controller drivers. Acked-by: Arnd Bergmann Signed-off-by: Sergio Paracuellos --- drivers/pci/probe.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 087d3658f75c..372a70efccc6 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -898,8 +898,6 @@ static int pci_register_host_bridge(struct pci_host_bridge *bridge) bridge->bus = bus; - /* Temporarily move resources off the list */ - list_splice_init(&bridge->windows, &resources); bus->sysdata = bridge->sysdata; bus->ops = bridge->ops; bus->number = bus->busn_res.start = bridge->busnr; @@ -925,6 +923,8 @@ static int pci_register_host_bridge(struct pci_host_bridge *bridge) if (err) goto free; + /* Temporarily move resources off the list */ + list_splice_init(&bridge->windows, &resources); err = device_add(&bridge->dev); if (err) { put_device(&bridge->dev);