From patchwork Fri Apr 6 14:55:35 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Petazzoni X-Patchwork-Id: 10326955 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id CE31C6053F for ; Fri, 6 Apr 2018 14:55:57 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C0437293F9 for ; Fri, 6 Apr 2018 14:55:57 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B4FFB2955C; Fri, 6 Apr 2018 14:55:57 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 66473293F9 for ; Fri, 6 Apr 2018 14:55:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753056AbeDFOz4 (ORCPT ); Fri, 6 Apr 2018 10:55:56 -0400 Received: from mail.bootlin.com ([62.4.15.54]:59578 "EHLO mail.bootlin.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755442AbeDFOzo (ORCPT ); Fri, 6 Apr 2018 10:55:44 -0400 Received: by mail.bootlin.com (Postfix, from userid 110) id 53B1C20723; Fri, 6 Apr 2018 16:55:43 +0200 (CEST) Received: from localhost (LStLambert-657-1-97-87.w90-63.abo.wanadoo.fr [90.63.216.87]) by mail.bootlin.com (Postfix) with ESMTPSA id 29CFB20712; Fri, 6 Apr 2018 16:55:43 +0200 (CEST) From: Thomas Petazzoni To: Bjorn Helgaas , Lorenzo Pieralisi , linux-pci@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, Gregory Clement , =?UTF-8?q?Miqu=C3=A8l=20Raynal?= , Maxime Chevallier , Antoine Tenart , Nadav Haklai , Victor Gu , Wilson Ding , Thomas Petazzoni Subject: [PATCH v4 5/6] PCI: aardvark: Introduce an advk_pcie_valid_device() helper Date: Fri, 6 Apr 2018 16:55:35 +0200 Message-Id: <20180406145536.19637-6-thomas.petazzoni@bootlin.com> X-Mailer: git-send-email 2.14.3 In-Reply-To: <20180406145536.19637-1-thomas.petazzoni@bootlin.com> References: <20180406145536.19637-1-thomas.petazzoni@bootlin.com> Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP In other to mimic other PCIe host controller drivers, introduce an advk_pcie_valid_device() helper, used in the configuration read/write functions. Signed-off-by: Thomas Petazzoni --- Changes since v4: - Move later into the series, so that it doesn't need to be pushed as a fix for stable. Changes since v3: - Make the new helper return a bool instead of int Changes since v2: - New patch --- drivers/pci/host/pci-aardvark.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/pci/host/pci-aardvark.c b/drivers/pci/host/pci-aardvark.c index 9abf549631b4..69c4fd50947e 100644 --- a/drivers/pci/host/pci-aardvark.c +++ b/drivers/pci/host/pci-aardvark.c @@ -431,6 +431,15 @@ static int advk_pcie_wait_pio(struct advk_pcie *pcie) return -ETIMEDOUT; } +static bool advk_pcie_valid_device(struct advk_pcie *pcie, struct pci_bus *bus, + int devfn) +{ + if ((bus->number == pcie->root_bus_nr) && PCI_SLOT(devfn) != 0) + return false; + + return true; +} + static int advk_pcie_rd_conf(struct pci_bus *bus, u32 devfn, int where, int size, u32 *val) { @@ -438,7 +447,7 @@ static int advk_pcie_rd_conf(struct pci_bus *bus, u32 devfn, u32 reg; int ret; - if ((bus->number == pcie->root_bus_nr) && PCI_SLOT(devfn) != 0) { + if (!advk_pcie_valid_device(pcie, bus, devfn)) { *val = 0xffffffff; return PCIBIOS_DEVICE_NOT_FOUND; } @@ -492,7 +501,7 @@ static int advk_pcie_wr_conf(struct pci_bus *bus, u32 devfn, int offset; int ret; - if ((bus->number == pcie->root_bus_nr) && PCI_SLOT(devfn) != 0) + if (!advk_pcie_valid_device(pcie, bus, devfn)) return PCIBIOS_DEVICE_NOT_FOUND; if (where % size)