Messages in this thread | | | Date | Thu, 2 Nov 2023 10:26:31 -0500 | Subject | Re: [PATCH 2/2] PCI: Ignore PCIe ports used for tunneling in pcie_bandwidth_available() | From | Mario Limonciello <> |
| |
On 11/2/2023 10:21, Lukas Wunner wrote: > On Wed, Nov 01, 2023 at 08:14:31PM -0500, Mario Limonciello wrote: >> Considering this I think it's a good idea to move that creation of the >> device link into drivers/pci/pci-acpi.c and store a bit in struct pci_device >> to indicate it's a tunneled port. >> >> Then 'thunderbolt' can look for this directly instead of walking all the FW >> nodes. >> >> pcie_bandwidth_available() can just look at the tunneled port bit instead of >> the existence of the device link. > > pci_is_thunderbolt_attached() should already be doing exactly what > you want to achieve with the new bit. It tells you whether a PCI > device is behind a Thunderbolt tunnel. So I don't think a new bit > is actually needed. > > Thanks, > > Lukas
It's only for a device connected to an Intel TBT3 controller though; it won't apply to USB4.
| |