From: Pratap Nirujogi Date: Wed, 18 Mar 2026 03:47:57 +0000 (-0400) Subject: ACPI: bus: Fix MFD child automatic modprobe issue X-Git-Tag: v7.0-rc5~33^2^3 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=e7648ffecb7fcb7400e123bb6ea989633a104fc3;p=thirdparty%2Fkernel%2Fstable.git ACPI: bus: Fix MFD child automatic modprobe issue MFD child devices sharing parent's ACPI Companion fails to probe as acpi_companion_match() returns incompatible ACPI Companion handle for binding with the check for pnp.type.backlight added recently. Remove this pnp.type.backlight check in acpi_companion_match() to fix the automatic modprobe issue. Fixes: 7a7a7ed5f8bdb ("ACPI: scan: Register platform devices for backlight device objects") Signed-off-by: Pratap Nirujogi Link: https://patch.msgid.link/20260318034842.1216536-1-pratap.nirujogi@amd.com Signed-off-by: Rafael J. Wysocki --- diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index f6707325f5821..2ec095e2009e4 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -818,9 +818,6 @@ const struct acpi_device *acpi_companion_match(const struct device *dev) if (list_empty(&adev->pnp.ids)) return NULL; - if (adev->pnp.type.backlight) - return adev; - return acpi_primary_dev_companion(adev, dev); }