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Commit d37c95f5 authored by Jason Gerecke's avatar Jason Gerecke Committed by Greg Kroah-Hartman
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HID: wacom: Correct logical maximum Y for 2nd-gen Intuos Pro large 



commit d471b6b22d37bf9928c6d0202bdaaf76583b8b61 upstream.

The HID descriptor for the 2nd-gen Intuos Pro large (PTH-860) contains
a typo which defines an incorrect logical maximum Y value. This causes
a small portion of the bottom of the tablet to become unusable (both
because the area is below the "bottom" of the tablet and because
'wacom_wac_event' ignores out-of-range values). It also results in a
skewed aspect ratio.

To fix this, we add a quirk to 'wacom_usage_mapping' which overwrites
the data with the correct value.

Signed-off-by: default avatarJason Gerecke <jason.gerecke@wacom.com>
CC: stable@vger.kernel.org # v4.10+
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent ab17de60

drivers/hid/wacom_sys.c

+8 −0
Original line number Diff line number Diff line
@@ -284,6 +284,14 @@ static void wacom_usage_mapping(struct hid_device *hdev, 
		}

	}



	/* 2nd-generation Intuos Pro Large has incorrect Y maximum */

	if (hdev->vendor == USB_VENDOR_ID_WACOM &&

	    hdev->product == 0x0358 &&

	    WACOM_PEN_FIELD(field) &&

	    wacom_equivalent_usage(usage->hid) == HID_GD_Y) {

		field->logical_maximum = 43200;

	}



	switch (usage->hid) {

	case HID_GD_X:

		features->x_max = field->logical_maximum;