linux-kernel - Re: [PATCH v2 6/9] PCI: Rename is_thunderbolt to is

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Message-ID: <d6466210-fdb7-e9e2-68bb-551b263f439d@redhat.com>
Date:   Fri, 3 Nov 2023 20:38:20 +0100
From:   Hans de Goede <hdegoede@...hat.com>
To:     Mario Limonciello <mario.limonciello@....com>,
        Karol Herbst <kherbst@...hat.com>,
        Lyude Paul <lyude@...hat.com>,
        Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Lukas Wunner <lukas@...ner.de>
Cc:     Danilo Krummrich <dakr@...hat.com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Xinhui Pan <Xinhui.Pan@....com>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Mark Gross <markgross@...nel.org>,
        Andreas Noever <andreas.noever@...il.com>,
        Michael Jamet <michael.jamet@...el.com>,
        Yehezkel Bernat <YehezkelShB@...il.com>,
        Pali Rohár <pali@...nel.org>,
        Marek Behún <kabel@...nel.org>,
        "Maciej W . Rozycki" <macro@...am.me.uk>,
        Manivannan Sadhasivam <mani@...nel.org>,
        "open list:DRM DRIVER FOR NVIDIA GEFORCE/QUADRO GPUS" 
        <dri-devel@...ts.freedesktop.org>,
        "open list:DRM DRIVER FOR NVIDIA GEFORCE/QUADRO GPUS" 
        <nouveau@...ts.freedesktop.org>,
        open list <linux-kernel@...r.kernel.org>,
        "open list:RADEON and AMDGPU DRM DRIVERS" 
        <amd-gfx@...ts.freedesktop.org>,
        "open list:PCI SUBSYSTEM" <linux-pci@...r.kernel.org>,
        "open list:ACPI" <linux-acpi@...r.kernel.org>,
        "open list:X86 PLATFORM DRIVERS" 
        <platform-driver-x86@...r.kernel.org>,
        "open list:THUNDERBOLT DRIVER" <linux-usb@...r.kernel.org>
Subject: Re: [PATCH v2 6/9] PCI: Rename is_thunderbolt to is_tunneled

Hi,

On 11/3/23 20:07, Mario Limonciello wrote:
> The `is_thunderbolt` bit has been used to indicate that a PCIe device
> contained the Intel VSEC which is used by various parts of the kernel
> to change behavior. To later allow usage with USB4 controllers as well,
> rename this to `is_tunneled`.
> 
> Signed-off-by: Mario Limonciello <mario.limonciello@....com>

Here is my ack for the trivial drivers/platform/x86/apple-gmux.c change:

Acked-by: Hans de Goede <hdegoede@...hat.com>

Bjorn, feel free to route this through the PCI tree.

Regards,

Hans




> ---
>  drivers/pci/pci.c                 | 2 +-
>  drivers/pci/probe.c               | 2 +-
>  drivers/platform/x86/apple-gmux.c | 2 +-
>  include/linux/pci.h               | 2 +-
>  4 files changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
> index 59c01d68c6d5..d9aa5a39f585 100644
> --- a/drivers/pci/pci.c
> +++ b/drivers/pci/pci.c
> @@ -3032,7 +3032,7 @@ bool pci_bridge_d3_possible(struct pci_dev *bridge)
>  			return true;
>  
>  		/* Even the oldest 2010 Thunderbolt controller supports D3. */
> -		if (bridge->is_thunderbolt)
> +		if (bridge->is_tunneled)
>  			return true;
>  
>  		/* Platform might know better if the bridge supports D3 */
> diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
> index 795534589b98..518413d15402 100644
> --- a/drivers/pci/probe.c
> +++ b/drivers/pci/probe.c
> @@ -1597,7 +1597,7 @@ static void set_pcie_thunderbolt(struct pci_dev *dev)
>  	/* Is the device part of a Thunderbolt controller? */
>  	vsec = pci_find_vsec_capability(dev, PCI_VENDOR_ID_INTEL, PCI_VSEC_ID_INTEL_TBT);
>  	if (vsec)
> -		dev->is_thunderbolt = 1;
> +		dev->is_tunneled = 1;
>  }
>  
>  static void set_pcie_untrusted(struct pci_dev *dev)
> diff --git a/drivers/platform/x86/apple-gmux.c b/drivers/platform/x86/apple-gmux.c
> index 1417e230edbd..20315aa4463a 100644
> --- a/drivers/platform/x86/apple-gmux.c
> +++ b/drivers/platform/x86/apple-gmux.c
> @@ -774,7 +774,7 @@ static int gmux_resume(struct device *dev)
>  
>  static int is_thunderbolt(struct device *dev, void *data)
>  {
> -	return to_pci_dev(dev)->is_thunderbolt;
> +	return to_pci_dev(dev)->is_tunneled;
>  }
>  
>  static int gmux_probe(struct pnp_dev *pnp, const struct pnp_device_id *id)
> diff --git a/include/linux/pci.h b/include/linux/pci.h
> index 439c2dac8a3e..b1724f25fb02 100644
> --- a/include/linux/pci.h
> +++ b/include/linux/pci.h
> @@ -440,7 +440,7 @@ struct pci_dev {
>  	unsigned int	is_virtfn:1;
>  	unsigned int	is_hotplug_bridge:1;
>  	unsigned int	shpc_managed:1;		/* SHPC owned by shpchp */
> -	unsigned int	is_thunderbolt:1;	/* Thunderbolt controller */
> +	unsigned int	is_tunneled:1;		/* Tunneled TBT or USB4 link */
>  	unsigned int	no_command_complete:1;	/* No command completion */
>  	/*
>  	 * Devices marked being untrusted are the ones that can potentially