This is a note to let you know that I've just added the patch titled
Input: wacom - make sure touch_max is set for touch devices
to the 3.10-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:
input-wacom-make-sure-touch_max-is-set-for-touch-devices.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 1d0d6df02750b4a6f466768cbfbf860e24f4c8d4 Mon Sep 17 00:00:00 2001
From: Ping Cheng <pinglinux@xxxxxxxxx>
Date: Mon, 25 Nov 2013 18:43:45 -0800
Subject: Input: wacom - make sure touch_max is set for touch devices
From: Ping Cheng <pinglinux@xxxxxxxxx>
commit 1d0d6df02750b4a6f466768cbfbf860e24f4c8d4 upstream.
Old single touch Tablet PCs do not have touch_max set at
wacom_features. Since touch device at lease supports one
finger, assign touch_max to 1 when touch usage is defined
in its HID Descriptor and touch_max is not pre-defined.
Tested-by: Jason Gerecke <killertofu@xxxxxxxxx>
Signed-off-by: Ping Cheng <pingc@xxxxxxxxx>
Reviewed-by: Chris Bagwell <chris@xxxxxxxxxxxxxx>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
Cc: Josh Boyer <jwboyer@xxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/input/tablet/wacom_sys.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
--- a/drivers/input/tablet/wacom_sys.c
+++ b/drivers/input/tablet/wacom_sys.c
@@ -339,7 +339,7 @@ static int wacom_parse_hid(struct usb_in
struct usb_device *dev = interface_to_usbdev(intf);
char limit = 0;
/* result has to be defined as int for some devices */
- int result = 0;
+ int result = 0, touch_max = 0;
int i = 0, usage = WCM_UNDEFINED, finger = 0, pen = 0;
unsigned char *report;
@@ -386,7 +386,8 @@ static int wacom_parse_hid(struct usb_in
if (usage == WCM_DESKTOP) {
if (finger) {
features->device_type = BTN_TOOL_FINGER;
-
+ /* touch device at least supports one touch point */
+ touch_max = 1;
switch (features->type) {
case TABLETPC2FG:
features->pktlen = WACOM_PKGLEN_TPC2FG;
@@ -539,6 +540,8 @@ static int wacom_parse_hid(struct usb_in
}
out:
+ if (!features->touch_max && touch_max)
+ features->touch_max = touch_max;
result = 0;
kfree(report);
return result;
Patches currently in stable-queue which might be from pinglinux@xxxxxxxxx are
queue-3.10/input-wacom-make-sure-touch_max-is-set-for-touch-devices.patch
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