Patch "Input: wacom_w8001 - ignore invalid pen data packets" has been added to the 4.4-stable tree

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 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:
input-wacom_w8001-ignore-invalid-pen-data-packets.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 <[email protected]> know about it.

From: Ping Cheng <[email protected]>
Date: Thu, 23 Jun 2016 10:55:11 -0700
Subject: Input: wacom_w8001 - ignore invalid pen data packets

From: Ping Cheng <[email protected]>

commit 9e72ac7492149a229ce9039c680849cb682d7092 upstream.

ThinkPad X60 Tablet PC (pen only device) sometime posts packets that are larger than W8001_PKTLEN_TPCPEN.

---
 drivers/input/touchscreen/wacom_w8001.c |    9 +++++++++
 1 file changed, 9 insertions(+)

@@ -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 [email protected] are

queue-4.4/input-wacom_w8001-w8001_max_length-should-be-13.patch queue-4.4/input-wacom_w8001-ignore-invalid-pen-data-packets.patch