On Tue, Apr 23, 2024 at 01:54:27PM -0500, Mario Limonciello wrote: > Hi, > > We've got a collection of bug reports about how if a Thunderbolt device is > connected at bootup it doesn't behave the same as if it were hotplugged by > the user after bootup. Issues range from non-functional devices or display > devices working at lower performance. > > All of the issues stem from a pre-OS firmware initializing the USB4 > controller and the OS re-using those tunnels. This has been fixed in > 6.9-rc1 by resetting the controller to a fresh state and discarding whatever > firmware has done. I'd like to bring it back to 6.6.y LTS and 6.8.y stable. > > 01da6b99d49f6 thunderbolt: Introduce tb_port_reset() > b35c1d7b11da8 thunderbolt: Introduce tb_path_deactivate_hop() > ec8162b3f0683 thunderbolt: Make tb_switch_reset() support Thunderbolt 2, 3 > and USB4 routers > 9a54c5f3dbde thunderbolt: Reset topology created by the boot firmware The last one seems wrong, it's really 59a54c5f3dbde00b8ad30aef27fe35b1fe07bf5c, right? thanks, greg k-h
