On Thu, Dec 30, 2021 at 12:14:22AM +0100, Hans de Goede wrote: > x86 ACPI devices which ship with only Android as their factory image use > older kernels which do not yet support ACPI serdev enumeration, as such > the serdev information in their ACPI tables is not reliable. > > For example on the Asus ME176C tablet the serdev describing the Bluetooth > HCI points to the serdev_controller connected to the GPS and the other way > around. > > Use the new acpi_quirk_skip_serdev_enumeration() helper to identify > known boards with this issue and then either abort adding the serdev > controller (creating a tty cdev instead) or only create the controller > leaving the instantation of the serdev itself up to platform code. > > In the case where only the serdev controller is created the necessary > serdevs will instead be instantiated by the > drivers/platform/x86/x86-android-tablets.c kernel module. > > Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx> > --- > drivers/tty/serdev/core.c | 14 ++++++++++++++ > 1 file changed, 14 insertions(+) Acked-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
