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...st don't > see the benefit to having it in the core. The above contradicts your statement 3 days earlier: "Assuming we need it, having it in struct pci_dev is fine. There's no point in looking up the VSEC capability more than once." (http://www.spinics.net/lists/linux-pci/msg58532.html) Please explain. Thanks, Lukas

On Fri, Feb 24, 2017 at 08:19:45PM +0100, Lukas Wunner wrote: > Detect on probe whether a PCI device is part of a Thunderbolt controller. > > Intel uses a Vendor-Specific Extended Capability (VSEC) with ID 0x1234 > on such devices. Detect presence of this VSEC and cache it in a newly > added is_thunderbolt bit in struct pci_dev. Add a helper to check > whether a given PCI