From: Hans de Goede hdegoede@redhat.com
[ Upstream commit fa153b7cddce795662d38f78a87612c166c0f692 ]
Some x86/ACPI laptops with MIPI cameras have a LATT2021 ACPI device in the _DEP dependency list of the ACPI devices for the camera-sensors (which have flags.honor_deps set).
The _DDN for the LATT2021 device is "Lattice FW Update Client Driver", suggesting that this is used for firmware updates of something. There is no Linux driver for this and if Linux gets support for updates it will likely be in userspace through fwupd.
For now add the LATT2021 HID to acpi_ignore_dep_ids[] so that acpi_dev_ready_for_enumeration() will return true once the other _DEP dependencies are met.
Signed-off-by: Hans de Goede hdegoede@redhat.com Signed-off-by: Rafael J. Wysocki rafael.j.wysocki@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/acpi/scan.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 42cec8120f18..adfeb5770efd 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -796,6 +796,7 @@ static bool acpi_info_matches_ids(struct acpi_device_info *info, static const char * const acpi_ignore_dep_ids[] = { "PNP0D80", /* Windows-compatible System Power Management Controller */ "INT33BD", /* Intel Baytrail Mailbox Device */ + "LATT2021", /* Lattice FW Update Client Driver */ NULL };