This is a note to let you know that I've just added the patch titled platform/x86: ideapad-laptop: Disable touchpad_switch to the 6.0-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: platform-x86-ideapad-laptop-disable-touchpad_switch.patch and it can be found in the queue-6.0 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 160b2f49cc5a1ad462147e8e9d75861003e7a57e Author: Manyi Li <limanyi@xxxxxxxxxxxxx> Date: Tue Oct 18 17:53:23 2022 +0800 platform/x86: ideapad-laptop: Disable touchpad_switch [ Upstream commit a231224a601c1924b9df620281ad04472900d75f ] Ideapads for "Lenovo Yoga 3 Pro 1370" and "ZhaoYang K4e-IML" do not use EC to switch touchpad. Reading VPCCMD_R_TOUCHPAD will return zero thus touchpad may be blocked unexpectedly. Signed-off-by: Manyi Li <limanyi@xxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20221018095323.14591-1-limanyi@xxxxxxxxxxxxx Reviewed-by: Hans de Goede <hdegoede@xxxxxxxxxx> Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c index abd0c81d62c4..33b3dfdd1b08 100644 --- a/drivers/platform/x86/ideapad-laptop.c +++ b/drivers/platform/x86/ideapad-laptop.c @@ -1533,6 +1533,24 @@ static const struct dmi_system_id hw_rfkill_list[] = { {} }; +static const struct dmi_system_id no_touchpad_switch_list[] = { + { + .ident = "Lenovo Yoga 3 Pro 1370", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo YOGA 3"), + }, + }, + { + .ident = "ZhaoYang K4e-IML", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "ZhaoYang K4e-IML"), + }, + }, + {} +}; + static void ideapad_check_features(struct ideapad_private *priv) { acpi_handle handle = priv->adev->handle; @@ -1541,7 +1559,12 @@ static void ideapad_check_features(struct ideapad_private *priv) priv->features.hw_rfkill_switch = dmi_check_system(hw_rfkill_list); /* Most ideapads with ELAN0634 touchpad don't use EC touchpad switch */ - priv->features.touchpad_ctrl_via_ec = !acpi_dev_present("ELAN0634", NULL, -1); + if (acpi_dev_present("ELAN0634", NULL, -1)) + priv->features.touchpad_ctrl_via_ec = 0; + else if (dmi_check_system(no_touchpad_switch_list)) + priv->features.touchpad_ctrl_via_ec = 0; + else + priv->features.touchpad_ctrl_via_ec = 1; if (!read_ec_data(handle, VPCCMD_R_FAN, &val)) priv->features.fan_mode = true;