From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9BB21CA9EAF for ; Thu, 24 Oct 2019 17:29:26 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4DFF0205F4 for ; Thu, 24 Oct 2019 17:29:26 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=yadro.com header.i=@yadro.com header.b="HhZBdrmD" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4DFF0205F4 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=yadro.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 46zZ435VCkzDqWx for ; Fri, 25 Oct 2019 04:29:23 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=yadro.com (client-ip=89.207.88.252; helo=mta-01.yadro.com; envelope-from=s.miroshnichenko@yadro.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=yadro.com Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=yadro.com header.i=@yadro.com header.b="HhZBdrmD"; dkim-atps=neutral Received: from mta-01.yadro.com (mta-02.yadro.com [89.207.88.252]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 46zYhz067KzDqMK for ; Fri, 25 Oct 2019 04:12:51 +1100 (AEDT) Received: from localhost (unknown [127.0.0.1]) by mta-01.yadro.com (Postfix) with ESMTP id E266F43E07; Thu, 24 Oct 2019 17:12:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=yadro.com; h= content-type:content-type:content-transfer-encoding:mime-version :references:in-reply-to:x-mailer:message-id:date:date:subject :subject:from:from:received:received:received; s=mta-01; t= 1571937162; x=1573751563; bh=03Gd2zXei/2YVqAgwHE1WQSBVHfa/dXqAQ0 t5M0opgg=; b=HhZBdrmDOr2TM39pzhh+ZTPVAtEDS1Dk78BQOXXT1xTBf8+6ONH ap3ZfaMg1kObCG//5WNo3RkffKpsjkeCjJgLV642ovh6OYK1Cv6zZyTonkePNJgF nIkiS/j/AxmBXx2unVtHDpdWpaL27iyspEGwIT38uTsriqqwPGdw9Xrs= X-Virus-Scanned: amavisd-new at yadro.com Received: from mta-01.yadro.com ([127.0.0.1]) by localhost (mta-01.yadro.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 6JcBIMhHLZ5w; Thu, 24 Oct 2019 20:12:42 +0300 (MSK) Received: from T-EXCH-02.corp.yadro.com (t-exch-02.corp.yadro.com [172.17.10.102]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by mta-01.yadro.com (Postfix) with ESMTPS id 1BD46437F3; Thu, 24 Oct 2019 20:12:41 +0300 (MSK) Received: from NB-148.yadro.com (172.17.15.136) by T-EXCH-02.corp.yadro.com (172.17.10.102) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P384) id 15.1.669.32; Thu, 24 Oct 2019 20:12:39 +0300 From: Sergey Miroshnichenko To: , Subject: [PATCH v6 05/30] PCI: hotplug: movable BARs: Fix reassigning the released bridge windows Date: Thu, 24 Oct 2019 20:12:03 +0300 Message-ID: <20191024171228.877974-6-s.miroshnichenko@yadro.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191024171228.877974-1-s.miroshnichenko@yadro.com> References: <20191024171228.877974-1-s.miroshnichenko@yadro.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [172.17.15.136] X-ClientProxiedBy: T-EXCH-01.corp.yadro.com (172.17.10.101) To T-EXCH-02.corp.yadro.com (172.17.10.102) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Sergey Miroshnichenko , Bjorn Helgaas , linux@yadro.com Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" When a bridge window is temporarily released during the rescan, its old size is not relevant anymore - it will be recreated from pbus_size_*(), so it's start value should be zero. If such window can't be reassigned, don't apply reset_resource(), so the next retry may succeed. Signed-off-by: Sergey Miroshnichenko --- drivers/pci/setup-bus.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c index 2c02eb1acf5d..f2f02e6c9000 100644 --- a/drivers/pci/setup-bus.c +++ b/drivers/pci/setup-bus.c @@ -295,7 +295,8 @@ static void assign_requested_resources_sorted(struct list_head *head, 0 /* don't care */, 0 /* don't care */); } - reset_resource(res); + if (!pci_can_move_bars) + reset_resource(res); } } } @@ -1579,8 +1580,8 @@ static void pci_bridge_release_resources(struct pci_bus *bus, type = old_flags = r->flags & PCI_RES_TYPE_MASK; pci_info(dev, "resource %d %pR released\n", PCI_BRIDGE_RESOURCES + idx, r); - /* Keep the old size */ - r->end = resource_size(r) - 1; + /* Don't keep the old size if the bridge will be recalculated */ + r->end = pci_can_move_bars ? 0 : (resource_size(r) - 1); r->start = 0; r->flags = 0; -- 2.23.0