Patch "Input: wacom_w8001 - ignore invalid pen data packets" has been added to the 3.14-stable tree
From: <gregkh@linuxfoundation.org>
Date: 2016-08-03 05:24:00
This is a note to let you know that I've just added the patch titled
Input: wacom_w8001 - ignore invalid pen data packets
to the 3.14-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_w8001-ignore-invalid-pen-data-packets.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let [off-list ref] know about it.
From 9e72ac7492149a229ce9039c680849cb682d7092 Mon Sep 17 00:00:00 2001
From: Ping Cheng <redacted> Date: Thu, 23 Jun 2016 10:55:11 -0700 Subject: Input: wacom_w8001 - ignore invalid pen data packets From: Ping Cheng <redacted> commit 9e72ac7492149a229ce9039c680849cb682d7092 upstream. ThinkPad X60 Tablet PC (pen only device) sometime posts packets that are larger than W8001_PKTLEN_TPCPEN. Reported-by: Chris J Arges <redacted> Tested-by: Chris J Arges <redacted> Signed-off-by: Ping Cheng <redacted> Reviewed-by: Peter Hutterer <redacted> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/input/touchscreen/wacom_w8001.c | 9 +++++++++ 1 file changed, 9 insertions(+)
--- a/drivers/input/touchscreen/wacom_w8001.c
+++ b/drivers/input/touchscreen/wacom_w8001.c@@ -342,6 +342,15 @@ static irqreturn_t w8001_interrupt(struc w8001->idx = 0; parse_multi_touch(w8001); break; + + default: + /* + * ThinkPad X60 Tablet PC (pen only device) sometimes + * sends invalid data packets that are larger than + * W8001_PKTLEN_TPCPEN. Let's start over again. + */ + if (!w8001->touch_dev && w8001->idx > W8001_PKTLEN_TPCPEN - 1) + w8001->idx = 0; } return IRQ_HANDLED;
Patches currently in stable-queue which might be from pinglinux@gmail.com are queue-3.14/input-wacom_w8001-w8001_max_length-should-be-13.patch queue-3.14/input-wacom_w8001-ignore-invalid-pen-data-packets.patch