Re: Thunderbolt: reboot hangs in nhi_pci_remove() with CalDigit TS5 Plus on AMD Strix Halo

[Mika Westerberg <mika.westerberg@linux.intel.com>]

On Mon, Sep 28, 2026 at 08:29:55PM +0000, brandon.proulx@42fifty.dev wrote:
> 
> Hi Mika,
> 
> Yes. Those fixes clear the hang on my system.
> 
> I could not boot the fixes branch as-is. It is based on 7.3-rc1, and this system runs 7.2.5-3-omarchy. I applied these four commits onto the 7.2.5 thunderbolt driver and loaded that module:
> 
> • thunderbolt: Fix domain reference leak when DPRX read is canceled
> • thunderbolt: Don't access a DP tunnel after its DPRX read was canceled
> • thunderbolt: Mark discovered tunnels as active
> • thunderbolt: Tear down inactive DP tunnels when the domain is stopped
> 
> Before that, unbinding 0000:c5:00.6 with the TS5 Plus attached blocked in nhi_pci_remove() at wait_for_completion(&nhi->domain_released), and reboot(2) stuck in the same place until I held the power button. dprx_timeout is 12000, but the wait lasted many minutes.
> 
> With the patched module, that unbind returned in about a second and the dock came back on rebind. A normal systemctl reboot then finished: systemd unmounted the filesystems and the machine reset, instead of sitting on the splash.
> 

Great to hear that it helped :)