On Wed, Sep 16, 2020 at 05:56:54PM +0200, Hans de Goede wrote: > Hi, > > On 9/9/20 12:32 PM, Hans de Goede wrote: > > Some ACPI i2c-devices _STA method (which is used to detect if the device > > is present) use autodetection code which probes which device is present > > over i2c. This requires the I2C ACPI OpRegion handler to be registered > > before we enumerate i2c-clients under the i2c-adapter. > > > > This fixes the i2c touchpad on the Lenovo ThinkBook 14-IIL and > > ThinkBook 15 IIL not getting an i2c-client instantiated and thus not > > working. > > > > BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1842039 > > Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx> > > Ping? This fixes a serious problem (non working touchpad on various > laptop models) and is a pretty straight-forward fix. > > Arguably it should even go to stable, but I'm not 100% sure about that > because these sorta ACPI enumeration problems can sometimes by > tricky. With that said in this case the fix does seem to be > very straight forward and obviously correct. > > Mika, since this deals with the ACPI bits of the i2c-core can > you review this one please? Sure, looks like the right thing to do: Reviewed-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
