From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70]:59958 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755534AbdLORgE (ORCPT ); Fri, 15 Dec 2017 12:36:04 -0500 Date: Fri, 15 Dec 2017 17:36:43 +0000 From: Lorenzo Pieralisi To: Manikanta Maddireddy , thierry.reding@gmail.com Cc: cyndis@kapsi.fi, bhelgaas@google.com, jonathanh@nvidia.com, robh+dt@kernel.org, frowand.list@gmail.com, rjw@rjwysocki.net, tglx@linutronix.de, vidyas@nvidia.com, kthota@nvidia.com, linux-tegra@vger.kernel.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, linux-pm@vger.kernel.org Subject: Re: [PATCH V4 3/7] PCI: tegra: Remove PCI_REASSIGN_ALL_BUS flag for Tegra PCIe Message-ID: <20171215173643.GA1050@red-moon> References: <1512723493-865-1-git-send-email-mmaddireddy@nvidia.com> <1512723493-865-4-git-send-email-mmaddireddy@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <1512723493-865-4-git-send-email-mmaddireddy@nvidia.com> Sender: linux-pci-owner@vger.kernel.org List-ID: On Fri, Dec 08, 2017 at 02:28:09PM +0530, Manikanta Maddireddy wrote: > Primary, secondary and subordinate default bus numbers are 0 in Tegra and > it is expecting SW to program these numbers in configration space. > > pci_scan_bridge_extend() function programs these numbers in configuration > space if secondary & subordinate bus numbers are 0 or PCI_REASSIGN_ALL_BUS > flag is set. Since secondary & subordinate default bus numbers are 0, > PCI_REASSIGN_ALL_BUS flag can be removed for Tegra PCIe. > > Signed-off-by: Manikanta Maddireddy > --- > V3: > * new patch in V3 > V4: > * no change in this patch > > drivers/pci/host/pci-tegra.c | 1 - > 1 file changed, 1 deletion(-) > > diff --git a/drivers/pci/host/pci-tegra.c b/drivers/pci/host/pci-tegra.c > index a549c5899e26..0d91f1a3a6b4 100644 > --- a/drivers/pci/host/pci-tegra.c > +++ b/drivers/pci/host/pci-tegra.c > @@ -2604,7 +2604,6 @@ static int tegra_pcie_probe(struct platform_device *pdev) > > tegra_pcie_enable_ports(pcie); > > - pci_add_flags(PCI_REASSIGN_ALL_BUS); This looks obviously OK to me but I need Thierry's ACK to queue it. Lorenzo > host->busnr = pcie->busn.start; > host->dev.parent = &pdev->dev; > host->ops = &tegra_pcie_ops; > -- > 2.1.4 >