On 22.2.2024 16.06, Greg KH wrote:
On Thu, Feb 22, 2024 at 03:38:18PM +0200, Mathias Nyman wrote:
Ports with _UPC (USB Port Capability) ACPI objects stating they are
"not connectable" are not wired to any connector or internal device.
They only exist inside the host controller.
These ports may not have an ACPI _PLD (Physical Location of Device)
object.
Rework the code so that _UPC is read even if _PLD does not exist, and
make sure the port->connect_type is set to "USB_PORT_NOT_USED" instead
of "USB_PORT_CONNECT_TYPE_UNKNOWN".
Signed-off-by: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx>
Does patch 2/2 need this? If so, why isn't it marked for stable?
2/2 alone fixes the real world port peering problem seen.
This is something I stumbled upon while debugging that issue.
This patch just makes sure we don't skip marking some unused ports as
unused due to how we parse ACPI tables.
Thanks
Mathias
