linux-kernel - Re: Thunderbolt 3 (Skylake / Alpine Ridge) hotplug

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Message-ID: <56F0FE22.6050206@jscinoz.so>
Date:	Tue, 22 Mar 2016 19:11:14 +1100
From:	Jack Coulter <jscinoz@...inoz.so>
To:	Andreas Noever <andreas.noever@...il.com>
Cc:	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-acpi@...r.kernel.org, "Rafael J. Wysocki" <rafael@...nel.org>
Subject: Re: Thunderbolt 3 (Skylake / Alpine Ridge) hotplug

Hi Andreas,

> That is correct. On your device TB should be handled by the firmware.
>
> Björn suggested that we might not be reacting to acpi notifications
> (or pci hotplug interrupts) properly. To confirm this you could try to
> issue a manual pci rescan via
>
> echo "1" > /sys/bus/pci/rescan
>
> This should make the device appear (if the issue lies with our
> handling of hotplug events).
I tried this but unfortunately no additional devices showed up, nor was
any additional dmesg output generated.

> Otherwise you might want to take a look at the ACPI tables and search
> for code which turn off thunderbolt or something like that. Does
> hotplug work under Windows (without additional drivers)?
I'm unable to comment as to whether it works under Windows - I do not
have Windows installed on this machine nor do I have sufficient
unallocated disk space to install it.


Kind regards,
Jack



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