Bug 106681

Created attachment 191221 [details]
The kernel configuration file of my system.

==Summary==

Apple Thunderbolt Ethernet Adapter not Working After Suspend & Resume

==Overview==

On a Retina MacBook Pro 11,3, with an Apple Thunderbolt Ethernet Adapter plugged in, the previously working adapter does not work after suspend & resume.  

==Steps to Reproduce==

1) Boot the Retina MacBook Pro 11,3. Plug in the Apple Thunderbolt Ethernet Adapter. (Thunderbolt hot-plugging works on my setup.) The adapter is usable now (Link is reported up, lspci as in attachment

2) Suspend the machine (I close the lid which works when disabling 'XHCI' in `/proc/acpi/wakeup`)

3) Resume the machine (Open the lid)

4) The adapter does not work now. It is reported DOWN by `ip link`. lspci output shows different lables (see attachments). Many error messages in log output.

==Actual Result==

As described above: The Thunderbolt Ethernet Adapter does not work anymore after resume.
Unplug and re-plugin does not resolve the issue.
(See additional information for my current workarounds)

==Expected Result==

The Thunderbolt Ethernet Adapter should continue to work link before suspend.

==Build Data & Hardware==

Linux 4.3.0-rc7 https://www.kernel.org/pub/linux/kernel/v4.x/testing/linux-4.3-rc7.tar.xz
Kernel Config: See attachment
Userland: Arch Linux
Retina MacBook Pro 11,3 http://www.everymac.com/systems/apple/macbook_pro/specs/macbook-pro-core-i7-2.3-15-dual-graphics-late-2013-retina-display-specs.html
Apple Thunderbolt Ethernet Adapter (labeled BCM2590 on the backside, can't explain why this identifier differs from lspci output. I think this is not of critical importance for this bug report.)

==Addtitional Information==

Workaround 1: The obvious workaround is to unplug the adapter before suspending.
Workaround 2: If the machine is in the state described in "Steps to Reproduce", unplug the adapter in normal operation, the suspend and resume, then plug-in again. The adapter works again.
	
==Attachments==

kernel_config	The kernel configuration file of my system.

thunderbolt_ethernet_lspci_before_suspend.txt	lspci -k output before suspending the system (as in "Steps to Reproduce")
thunderbolt_ethernet_after_resume.log	lspci -k output after resuming the system (as in "Steps to Reproduce")

thunderbolt_ethernet_normal_plugin_unplug.log	journalctl output of what happens when just plugging in and shortly after unplugging the adapter. All this works as expected. (meant as a possible reference)	

thunderbolt_ethernet_workaround_2_wakeup.log	journalctl output of what happens when resuming like in workaround 2
thunderbolt_ethernet_workaround_2_replugin_thunderbolt_adapter.log	journalctl output of what happens when plugging in the adapter again after resume like in workaround 2