ACPI: x86: Add ACPI_QUIRK_UART1_SKIP for Lenovo Yoga Book yb1-x90f/l

The Lenovo Yoga Book yb1-x90f/l 2-in-1 which ships with Android as
Factory OS has (another) bug in its DSDT where the UART resource for
the BTH0 ACPI device contains "\\_SB.PCIO.URT1" as path to the UART.

Note that is with a letter 'O' instead of the number '0' which is wrong.

This causes Linux to instantiate a standard /dev/ttyS? device for
the UART instead of a /sys/bus/serial device, which in turn causes
bluetooth to not work.

Similar DSDT bugs have been encountered before and to work around those
the acpi_quirk_skip_serdev_enumeration() helper exists.

Previous devices had the broken resource pointing to the first UART, while
the BT HCI was on the second UART, which ACPI_QUIRK_UART1_TTY_UART2_SKIP
deals with. Add a new ACPI_QUIRK_UART1_SKIP quirk for skipping enumeration
of UART1 instead for the Yoga Book case and add this quirk to the
existing DMI quirk table entry for the yb1-x90f/l .

This leaves the UART1 controller unbound allowing the x86-android-tablets
module to manually instantiate a serdev for it fixing bluetooth.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

0 files changed, 0 insertions, 0 deletions