On Wed, Oct 28, 2020 at 10:10:43AM +0100, Greg Kroah-Hartman wrote: > On Fri, Oct 09, 2020 at 04:40:45PM +0200, Benjamin Berg wrote: > > From: Benjamin Berg <bberg@xxxxxxxxxx> > > > > Hi all, > > > > so, I kept running in an issue where the UCSI port information was saying > > that power was being delivered (online: 1), while no cable was attached. > > > > The core of the problem is that there are scenarios where UCSI change > > notifications are lost. This happens because querying the changes that > > happened is done using the GET_CONNECTOR_STATUS command while clearing the > > bitfield happens from the separate ACK command. Any change in between will > > be lost. > > > > Note that the problem may be almost invisible in the UI as e.g. GNOME will > > still show the battery as discharging. But some policies like automatic > > suspend may be applied incorrectly. > > > > Cc: Hans de Goede <hdegoede@xxxxxxxxxx> > > Cc: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx> > > > > Benjamin Berg (2): > > usb: typec: ucsi: acpi: Always decode connector change information > > usb: typec: ucsi: Work around PPM losing change information > > Do these need to be backported to stable kernel releases? If so, how > far back? Due to the lack of response, I guess they don't need to go to any stable kernel, so will queue them up for 5.11-rc1. thanks, greg k-h
