** Changed in: linux (Ubuntu Focal)
Status: Incomplete => In Progress
** Changed in: linux (Ubuntu Hirsute)
Status: Incomplete => In Progress
** Changed in: linux (Ubuntu Focal)
Assignee: (unassigned) => Chris Chiu (mschiu77)
** Changed in: linux (Ubuntu Hirsute)
Assignee: (unassigned) => Chris Chiu (mschiu77)
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https://bugs.launchpad.net/bugs/1945211
Title:
Fix cold plugged USB device on certain PCIe USB cards
Status in linux package in Ubuntu:
Incomplete
Status in linux source package in Focal:
In Progress
Status in linux source package in Hirsute:
In Progress
Bug description:
[SRU Justification]
[Impact]
Cold plugged USB device was not detected on certain PCIe USB cards
(like Inateck card connected to AM64 EVM or connected to J7200 EVM).
And also the root hub mentioned in https://bugs.launchpad.net/bugs/1939638.
Re-plugging the USB device always gets it enumerated.
[Fix]
As soonprimary roothub is registered, port status change is handled
even before xHC is running and leads to cold plug USB devices not
detected. Register both root hubs along with the secondary hcd for xhci.
[Test Case]
1. Plug the USB device to the ports of problematic root hub.
2. Power on the machine.
3. Check if the USB device can work or not after boot.
[Regression Potential]
Low. It simply make sure both primary and secondary roothubs are registered
along with the second HCD.
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