Patch "HID: quirks: Fix keyboard + touchpad on Toshiba Click Mini not working" has been added to the 4.4-stable tree

[<gregkh@linuxfoundation.org>]

This is a note to let you know that I've just added the patch titled

    HID: quirks: Fix keyboard + touchpad on Toshiba Click Mini not working

to the 4.4-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:
     hid-quirks-fix-keyboard-touchpad-on-toshiba-click-mini-not-working.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From edfc3722cfef4217c7fe92b272cbe0288ba1ff57 Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede@redhat.com>
Date: Wed, 17 Jan 2018 21:05:55 +0100
Subject: HID: quirks: Fix keyboard + touchpad on Toshiba Click Mini not working

From: Hans de Goede <hdegoede@redhat.com>

commit edfc3722cfef4217c7fe92b272cbe0288ba1ff57 upstream.

The Toshiba Click Mini uses an i2c attached keyboard/touchpad combo
(single i2c_hid device for both) which has a vid:pid of 04F3:0401,
which is also used by a bunch of Elan touchpads which are handled by the
drivers/input/mouse/elan_i2c driver, but that driver deals with pure
touchpads and does not work for a combo device such as the one on the
Toshiba Click Mini.

The combo on the Mini has an ACPI id of ELAN0800, which is not claimed
by the elan_i2c driver, so check for that and if it is found do not ignore
the device. This fixes the keyboard/touchpad combo on the Mini not working
(although with the touchpad in mouse emulation mode).

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/hid/hid-core.c |   12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -2308,7 +2308,6 @@ static const struct hid_device_id hid_ig
 	{ HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x0004) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x000a) },
 	{ HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, 0x0400) },
-	{ HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, 0x0401) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC5UH) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC4UM) },
@@ -2578,6 +2577,17 @@ bool hid_ignore(struct hid_device *hdev)
 			strncmp(hdev->name, "www.masterkit.ru MA901", 22) == 0)
 			return true;
 		break;
+	case USB_VENDOR_ID_ELAN:
+		/*
+		 * Many Elan devices have a product id of 0x0401 and are handled
+		 * by the elan_i2c input driver. But the ACPI HID ELAN0800 dev
+		 * is not (and cannot be) handled by that driver ->
+		 * Ignore all 0x0401 devs except for the ELAN0800 dev.
+		 */
+		if (hdev->product == 0x0401 &&
+		    strncmp(hdev->name, "ELAN0800", 8) != 0)
+			return true;
+		break;
 	}
 
 	if (hdev->type == HID_TYPE_USBMOUSE &&


Patches currently in stable-queue which might be from hdegoede@redhat.com are

queue-4.4/ahci-add-pci-ids-for-intel-bay-trail-cherry-trail-and-apollo-lake-ahci.patch
queue-4.4/bluetooth-btsdio-do-not-bind-to-non-removable-bcm43341.patch
queue-4.4/hid-quirks-fix-keyboard-touchpad-on-toshiba-click-mini-not-working.patch
queue-4.4/ahci-annotate-pci-ids-for-mobile-intel-chipsets-as-such.patch
queue-4.4/bluetooth-btusb-restore-qca-rome-suspend-resume-fix-with-a-rewritten-version.patch