[Bug 199631] New: WARNING: at drivers/thunderbolt/switch.c:587 tb_switch_add+0x63e/0x730 [thunderbolt]

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

https://bugzilla.kernel.org/show_bug.cgi?id=199631

            Bug ID: 199631
           Summary: WARNING:  at drivers/thunderbolt/switch.c:587
                    tb_switch_add+0x63e/0x730 [thunderbolt]
           Product: Drivers
           Version: 2.5
    Kernel Version: 4.17.0-0.rc3.git4.1.fc29.x86_64
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: PCI
          Assignee: drivers_pci@xxxxxxxxxxxxxxxxxxxx
          Reporter: bugzilla@xxxxxxxxxxxxxxxxx
        Regression: No

Soon after boot, I'm getting a warning and a call trace

[   36.051674] thunderbolt 0000:03:00.0: timeout reading config space 1 from
0x36
[   36.051757] ------------[ cut here ]------------
[   36.051769] thunderbolt 0000:03:00.0: 0:1: non switch port without a PHY
[   36.051881] WARNING: CPU: 3 PID: 1511 at drivers/thunderbolt/switch.c:587
tb_switch_add+0x63e/0x730 [thunderbolt]


Does not happen with 4.16.6.

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