From: Thierry Reding <thierry.reding@gmail.com>
To: Vidya Sagar <vidyas@nvidia.com>
Cc: mark.rutland@arm.com, devicetree@vger.kernel.org,
lorenzo.pieralisi@arm.com, mperttunen@nvidia.com,
mmaddireddy@nvidia.com, linux-pci@vger.kernel.org,
catalin.marinas@arm.com, will.deacon@arm.com,
linux-kernel@vger.kernel.org, kthota@nvidia.com, kishon@ti.com,
linux-tegra@vger.kernel.org, robh+dt@kernel.org,
gustavo.pimentel@synopsys.com, jingoohan1@gmail.com,
bhelgaas@google.com, jonathanh@nvidia.com,
linux-arm-kernel@lists.infradead.org, sagar.tv@gmail.com
Subject: Re: [PATCH V5 03/16] PCI: Export pcie_bus_config symbol
Date: Fri, 3 May 2019 13:07:32 +0200 [thread overview]
Message-ID: <20190503110732.GC32400@ulmo> (raw)
In-Reply-To: <20190424052004.6270-4-vidyas@nvidia.com>
[-- Attachment #1.1: Type: text/plain, Size: 1343 bytes --]
On Wed, Apr 24, 2019 at 10:49:51AM +0530, Vidya Sagar wrote:
> Export pcie_bus_config to enable host controller drivers setting it to a
> specific configuration be able to build as loadable modules
>
> Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
> ---
> Changes since [v4]:
> * None
>
> Changes since [v3]:
> * None
>
> Changes since [v2]:
> * None
>
> Changes since [v1]:
> * This is a new patch in v2 series
>
> drivers/pci/pci.c | 1 +
> 1 file changed, 1 insertion(+)
It doesn't look to me like this is something that host controller
drivers are supposed to change. This is set via the pci kernel command-
line parameter, meaning it's a way of tuning the system configuration.
Drivers should not be allowed to override this after the fact.
Why do we need to set this?
Thierry
> diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
> index f5ff01dc4b13..731f78508601 100644
> --- a/drivers/pci/pci.c
> +++ b/drivers/pci/pci.c
> @@ -94,6 +94,7 @@ unsigned long pci_hotplug_mem_size = DEFAULT_HOTPLUG_MEM_SIZE;
> unsigned long pci_hotplug_bus_size = DEFAULT_HOTPLUG_BUS_SIZE;
>
> enum pcie_bus_config_types pcie_bus_config = PCIE_BUS_DEFAULT;
> +EXPORT_SYMBOL_GPL(pcie_bus_config);
>
> /*
> * The default CLS is used if arch didn't set CLS explicitly and not
> --
> 2.17.1
>
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next prev parent reply other threads:[~2019-05-03 11:07 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-24 5:19 [PATCH V5 00/16] Add Tegra194 PCIe support Vidya Sagar
2019-04-24 5:19 ` [PATCH V5 01/16] PCI: Add #defines for some of PCIe spec r4.0 features Vidya Sagar
2019-04-24 5:19 ` [PATCH V5 02/16] PCI/PME: Export pcie_pme_disable_msi() & pcie_pme_no_msi() APIs Vidya Sagar
2019-05-03 11:01 ` Thierry Reding
2019-05-07 7:10 ` Vidya Sagar
2019-05-07 7:51 ` Vidya Sagar
2019-04-24 5:19 ` [PATCH V5 03/16] PCI: Export pcie_bus_config symbol Vidya Sagar
2019-05-03 11:07 ` Thierry Reding [this message]
2019-05-10 6:21 ` Vidya Sagar
2019-05-10 16:46 ` Bjorn Helgaas
2019-05-10 17:50 ` Vidya Sagar
2019-04-24 5:19 ` [PATCH V5 04/16] PCI: dwc: Perform dbi regs write lock towards the end Vidya Sagar
2019-05-03 11:13 ` Thierry Reding
2019-05-07 7:49 ` Vidya Sagar
2019-04-24 5:19 ` [PATCH V5 05/16] PCI: dwc: Move config space capability search API Vidya Sagar
2019-04-24 8:13 ` Gustavo Pimentel
2019-05-07 8:04 ` Vidya Sagar
2019-04-24 5:19 ` [PATCH V5 06/16] PCI: dwc: Add ext " Vidya Sagar
2019-04-24 5:19 ` [PATCH V5 07/16] dt-bindings: PCI: designware: Add binding for CDM register check Vidya Sagar
2019-04-26 14:32 ` Rob Herring
2019-05-07 8:25 ` Vidya Sagar
2019-05-13 15:15 ` Rob Herring
2019-05-14 5:29 ` Vidya Sagar
2019-04-24 5:19 ` [PATCH V5 08/16] PCI: dwc: Add support to enable " Vidya Sagar
2019-04-24 5:19 ` [PATCH V5 09/16] Documentation/devicetree: Add PCIe supports-clkreq property Vidya Sagar
2019-04-26 15:22 ` Rob Herring
2019-05-07 8:31 ` Vidya Sagar
2019-04-24 5:19 ` [PATCH V5 10/16] dt-bindings: PCI: tegra: Add device tree support for T194 Vidya Sagar
2019-04-26 15:43 ` Rob Herring
2019-05-07 9:20 ` Vidya Sagar
2019-05-13 15:20 ` Rob Herring
2019-05-14 6:25 ` Vidya Sagar
2019-05-03 11:19 ` Thierry Reding
2019-05-07 9:26 ` Vidya Sagar
2019-04-24 5:19 ` [PATCH V5 11/16] dt-bindings: PHY: P2U: Add Tegra 194 P2U block Vidya Sagar
2019-04-26 15:45 ` Rob Herring
2019-04-26 16:07 ` Thierry Reding
2019-04-26 18:05 ` Rob Herring
2019-05-07 9:57 ` Vidya Sagar
2019-04-24 5:20 ` [PATCH V5 12/16] arm64: tegra: Add P2U and PCIe controller nodes to Tegra194 DT Vidya Sagar
2019-05-03 11:26 ` Thierry Reding
2019-05-07 10:10 ` Vidya Sagar
2019-04-24 5:20 ` [PATCH V5 13/16] arm64: tegra: Enable PCIe slots in P2972-0000 board Vidya Sagar
2019-05-03 11:27 ` Thierry Reding
2019-05-07 10:11 ` Vidya Sagar
2019-04-24 5:20 ` [PATCH V5 14/16] phy: tegra: Add PCIe PIPE2UPHY support Vidya Sagar
2019-05-03 11:35 ` Thierry Reding
2019-05-07 10:25 ` Vidya Sagar
2019-04-24 5:20 ` [PATCH V5 15/16] PCI: tegra: Add Tegra194 PCIe support Vidya Sagar
2019-05-03 13:08 ` Thierry Reding
2019-05-07 13:54 ` Vidya Sagar
2019-04-24 5:20 ` [PATCH V5 16/16] arm64: Add Tegra194 PCIe driver to defconfig Vidya Sagar
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