From: Hans de Goede hdegoede@redhat.com
[ Upstream commit d431dfb764b145369be820fcdfd50f2159b9bbc2 ]
It turns out that there is a WMI object which controls the PWM2 device used for the keyboard backlight and that WMI object also provides some other useful functionality.
The upcoming lenovo-yogabook-wmi driver will offer both backlight control and the other functionality, so there no longer is a need to have the lpss-pwm driver binding to PWM2 for backlight control; and this is now actually undesirable because this will cause both the WMI code and the lpss-pwm driver to poke at the same PWM controller.
Drop the always-present quirk for the PWM2 ACPI-device, so that the lpss-pwm controller will no longer bind to it.
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/x86/utils.c | 4 ---- 1 file changed, 4 deletions(-)
diff --git a/drivers/acpi/x86/utils.c b/drivers/acpi/x86/utils.c index bdc1ba00aee9f..baaa44edc9441 100644 --- a/drivers/acpi/x86/utils.c +++ b/drivers/acpi/x86/utils.c @@ -54,10 +54,6 @@ static const struct always_present_id always_present_ids[] = { ENTRY("80860F09", "1", X86_MATCH(ATOM_SILVERMONT), {}), ENTRY("80862288", "1", X86_MATCH(ATOM_AIRMONT), {}),
- /* Lenovo Yoga Book uses PWM2 for keyboard backlight control */ - ENTRY("80862289", "2", X86_MATCH(ATOM_AIRMONT), { - DMI_MATCH(DMI_PRODUCT_NAME, "Lenovo YB1-X9"), - }), /* * The INT0002 device is necessary to clear wakeup interrupt sources * on Cherry Trail devices, without it we get nobody cared IRQ msgs.