This is a note to let you know that I've just added the patch titled
ACPI: scan: Add LATT2021 to acpi_ignore_dep_ids[]
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
acpi-scan-add-latt2021-to-acpi_ignore_dep_ids.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 42b810d7a2701cc26edaceb92587ab52005e3956
Author: Hans de Goede <hdegoede@xxxxxxxxxx>
Date: Tue Oct 25 14:12:23 2022 +0200
ACPI: scan: Add LATT2021 to acpi_ignore_dep_ids[]
[ 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@xxxxxxxxxx>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 6e9cd41c5f9b..ae74720888db 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -793,6 +793,7 @@ 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
};
