[SRU] [Unstable/OEM-5.14] [PATCH 0/7] Improve USB Type-C support

[Timo Aaltonen]

On 15.12.2021 5.17, Kai-Heng Feng wrote:
> On Tue, Dec 14, 2021 at 11:06 PM Timo Aaltonen <tjaalton at ubuntu.com> wrote:
>>
>> On 16.11.2021 3.38, Kai-Heng Feng wrote:
>>> BugLink: https://bugs.launchpad.net/bugs/1950974
>>>
>>> [Impact]
>>> Error message "ucsi_acpi USBC000:00: GET_CONNECTOR_STATUS failed (-110)"
>>> can be found on many systems.
>>>
>>> [Fix]
>>> The main issue is that the PD firmware is unreliable, so use more
>>> deterministic methods to make it reliable
>>>
>>> [Test]
>>> The error message is gone. Also tried to plug/unplug USB Type-C power
>>> cord, and the status are always reported correctly.
>>>
>>> [Where problems could occur]
>>> This is quite a huge refactor, so regression can be expected. Only
>>> target to unstable and latest OEM kernel to reduce risk we are taking.
>>>
>>> Heikki Krogerus (7):
>>>     usb: typec: ucsi: Always cancel the command if PPM reports BUSY
>>>       condition
>>>     usb: typec: ucsi: Don't stop alt mode registration on busy condition
>>>     usb: typec: ucsi: Add polling mechanism for partner tasks like alt
>>>       mode checking
>>>     usb: typec: ucsi: acpi: Reduce the command completion timeout
>>>     usb: typec: ucsi: Check the partner alt modes always if there is PD
>>>       contract
>>>     usb: typec: ucsi: Read the PDOs in separate work
>>>     usb: typec: ucsi: Better fix for missing unplug events issue
>>>
>>>    drivers/usb/typec/ucsi/ucsi.c      | 337 ++++++++++++++---------------
>>>    drivers/usb/typec/ucsi/ucsi.h      |   3 +-
>>>    drivers/usb/typec/ucsi/ucsi_acpi.c |   2 +-
>>>    3 files changed, 167 insertions(+), 175 deletions(-)
>>>
>>
>> What's the plan to get this in jammy/5.15? Remember that the upgrade
>> path for oem-5.14 is hwe-5.15..
> 
> Isn't Jammy going to base on Unstable tree (5.15)?

Jammy already has 5.15, unstable is tracking 5.16/5.17 at this point.


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