This is a note to let you know that I've just added the patch titled
HID: Fix Speedlink VAD Cezanne support for some devices
to the 3.11-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-fix-speedlink-vad-cezanne-support-for-some-devices.patch
and it can be found in the queue-3.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 06bb5219118fb098f4b0c7dcb484b28a52bf1c14 Mon Sep 17 00:00:00 2001
From: Stefan Kriwanek <dev@xxxxxxxxxxxxxxxxx>
Date: Sun, 25 Aug 2013 10:46:13 +0200
Subject: HID: Fix Speedlink VAD Cezanne support for some devices
From: Stefan Kriwanek <dev@xxxxxxxxxxxxxxxxx>
commit 06bb5219118fb098f4b0c7dcb484b28a52bf1c14 upstream.
Some devices of the "Speedlink VAD Cezanne" model need more aggressive fixing
than already done.
I made sure through testing that this patch would not interfere with the proper
working of a device that is bug-free. (The driver drops EV_REL events with
abs(val) >= 256, which are not achievable even on the highest laser resolution
hardware setting.)
Signed-off-by: Stefan Kriwanek <mail@xxxxxxxxxxxxxxxxx>
Signed-off-by: Jiri Kosina <jkosina@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/hid/hid-speedlink.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
--- a/drivers/hid/hid-speedlink.c
+++ b/drivers/hid/hid-speedlink.c
@@ -3,7 +3,7 @@
* Fixes "jumpy" cursor and removes nonexistent keyboard LEDS from
* the HID descriptor.
*
- * Copyright (c) 2011 Stefan Kriwanek <mail@xxxxxxxxxxxxxxxxx>
+ * Copyright (c) 2011, 2013 Stefan Kriwanek <dev@xxxxxxxxxxxxxxxxx>
*/
/*
@@ -46,8 +46,13 @@ static int speedlink_event(struct hid_de
struct hid_usage *usage, __s32 value)
{
/* No other conditions due to usage_table. */
- /* Fix "jumpy" cursor (invalid events sent by device). */
- if (value == 256)
+
+ /* This fixes the "jumpy" cursor occuring due to invalid events sent
+ * by the device. Some devices only send them with value==+256, others
+ * don't. However, catching abs(value)>=256 is restrictive enough not
+ * to interfere with devices that were bug-free (has been tested).
+ */
+ if (abs(value) >= 256)
return 1;
/* Drop useless distance 0 events (on button clicks etc.) as well */
if (value == 0)
Patches currently in stable-queue which might be from dev@xxxxxxxxxxxxxxxxx are
queue-3.11/hid-fix-speedlink-vad-cezanne-support-for-some-devices.patch
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