From patchwork Thu Oct 24 17:21:53 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sergei Miroshnichenko X-Patchwork-Id: 11210505 X-Patchwork-Delegate: bhelgaas@google.com 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 C80FA13B1 for ; Thu, 24 Oct 2019 17:22:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9827D21925 for ; Thu, 24 Oct 2019 17:22:10 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=yadro.com header.i=@yadro.com header.b="ElPypuDL" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2503450AbfJXRWK (ORCPT ); Thu, 24 Oct 2019 13:22:10 -0400 Received: from mta-02.yadro.com ([89.207.88.252]:49510 "EHLO mta-01.yadro.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S2440030AbfJXRWJ (ORCPT ); Thu, 24 Oct 2019 13:22:09 -0400 Received: from localhost (unknown [127.0.0.1]) by mta-01.yadro.com (Postfix) with ESMTP id A5F5A42F14; Thu, 24 Oct 2019 17:22:08 +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= 1571937727; x=1573752128; bh=vyz6eYyJqPZgaHNDYBpoQrHsS/fKfuLAlcp X0Sq71NU=; b=ElPypuDLevzApI78T+K1DC4GjG51NTtHTt/SNfSqqOvzu8epBxy Pku+3CdZVD79pWi4jXHfSTZ1ueZhtWg7m+5Sk3QgHqvFhQqt1o+pW7Gdn7PeNmZm 8SUl4AbPtS8XXylbVBVeJzns7mHlGDAXNzaRVGiJ8D0ePcizPVMXTiaE= 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 QGi8usQSkGY4; Thu, 24 Oct 2019 20:22:07 +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 BB9F042F15; Thu, 24 Oct 2019 20:22:05 +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 20:22:05 +0300 From: Sergey Miroshnichenko To: , CC: Bjorn Helgaas , , Sergey Miroshnichenko Subject: [PATCH RFC 07/11] powerpc/pci: Don't reduce the host bridge bus range Date: Thu, 24 Oct 2019 20:21:53 +0300 Message-ID: <20191024172157.878735-8-s.miroshnichenko@yadro.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191024172157.878735-1-s.miroshnichenko@yadro.com> References: <20191024172157.878735-1-s.miroshnichenko@yadro.com> MIME-Version: 1.0 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) Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Currently the last possible bus number of the PHB is set to the last used bus number during the boot. So when hotplugging a bridge later, no new buses can be allocated because they are limited by this value. Let the host bridge contain any number of buses up to 255. Signed-off-by: Sergey Miroshnichenko --- arch/powerpc/kernel/pci-common.c | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c index 1c448cf25506..5877ef7a39a0 100644 --- a/arch/powerpc/kernel/pci-common.c +++ b/arch/powerpc/kernel/pci-common.c @@ -1631,7 +1631,6 @@ void pcibios_scan_phb(struct pci_controller *hose) if (mode == PCI_PROBE_NORMAL) { pci_bus_update_busn_res_end(bus, 255); hose->last_busno = pci_scan_child_bus(bus); - pci_bus_update_busn_res_end(bus, hose->last_busno); } /* Platform gets a chance to do some global fixups before