From patchwork Thu May 20 09:22:26 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 444120 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=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham 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 2129EC43462 for ; Thu, 20 May 2021 10:59:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0547961186 for ; Thu, 20 May 2021 10:59:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237155AbhETLAn (ORCPT ); Thu, 20 May 2021 07:00:43 -0400 Received: from mail.kernel.org ([198.145.29.99]:57202 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235969AbhETK6X (ORCPT ); Thu, 20 May 2021 06:58:23 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 558C961CFE; Thu, 20 May 2021 10:02:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1621504947; bh=ptNW44jHsjRZArmDd3G8VBS22Tjv0sPsPiBKScOyMBA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=s3LWDUwJOmDPjVwXBjujVbXwpfYNEELywq7noFRGRFvCBvOJN0L8GuNNwXKSN0etH pZdEPQl63JpXnJEOeb+lzNlLW5MobH5lwcrUWKAQpoWHchMZSy/tvyDrArby7kbtTo qglwcuRQrDmUyVJ5Z1J09NN+L593amobQBokG8LQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Ilya Lipnitskiy , Liviu Dudau , Thomas Bogendoerfer , Sasha Levin Subject: [PATCH 4.9 154/240] MIPS: pci-legacy: stop using of_pci_range_to_resource Date: Thu, 20 May 2021 11:22:26 +0200 Message-Id: <20210520092113.816398528@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210520092108.587553970@linuxfoundation.org> References: <20210520092108.587553970@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Ilya Lipnitskiy [ Upstream commit 3ecb9dc1581eebecaee56decac70e35365260866 ] Mirror commit aeba3731b150 ("powerpc/pci: Fix IO space breakage after of_pci_range_to_resource() change"). Most MIPS platforms do not define PCI_IOBASE, nor implement pci_address_to_pio(). Moreover, IO_SPACE_LIMIT is 0xffff for most MIPS platforms. of_pci_range_to_resource passes the _start address_ of the IO range into pci_address_to_pio, which then checks it against IO_SPACE_LIMIT and fails, because for MIPS platforms that use pci-legacy (pci-lantiq, pci-rt3883, pci-mt7620), IO ranges start much higher than 0xffff. In fact, pci-mt7621 in staging already works around this problem, see commit 09dd629eeabb ("staging: mt7621-pci: fix io space and properly set resource limits") So just stop using of_pci_range_to_resource, which does not work for MIPS. Fixes PCI errors like: pci_bus 0000:00: root bus resource [io 0xffffffff] Fixes: 0b0b0893d49b ("of/pci: Fix the conversion of IO ranges into IO resources") Signed-off-by: Ilya Lipnitskiy Cc: Liviu Dudau Signed-off-by: Thomas Bogendoerfer Signed-off-by: Sasha Levin --- arch/mips/pci/pci-legacy.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/arch/mips/pci/pci-legacy.c b/arch/mips/pci/pci-legacy.c index 2d6886f09ba3..009b840ee5ef 100644 --- a/arch/mips/pci/pci-legacy.c +++ b/arch/mips/pci/pci-legacy.c @@ -158,8 +158,13 @@ void pci_load_of_ranges(struct pci_controller *hose, struct device_node *node) res = hose->mem_resource; break; } - if (res != NULL) - of_pci_range_to_resource(&range, node, res); + if (res != NULL) { + res->name = node->full_name; + res->flags = range.flags; + res->start = range.cpu_addr; + res->end = range.cpu_addr + range.size - 1; + res->parent = res->child = res->sibling = NULL; + } } }