Patch "Input: trackpoint - add new trackpoint firmware ID" has been added to the 4.12-stable tree

gregkh
2017-08-27T07:48:17Z

This is a note to let you know that I've just added the patch titled

Input: trackpoint - add new trackpoint firmware ID

to the 4.12-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-trackpoint-add-new-trackpoint-firmware-id.patch
and it can be found in the queue-4.12 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.

>From ec667683c532c93fb41e100e5d61a518971060e2 Mon Sep 17 00:00:00 2001
From: Aaron Ma <aaron.ma@canonical.com>
Date: Fri, 18 Aug 2017 12:17:21 -0700
Subject: Input: trackpoint - add new trackpoint firmware ID

From: Aaron Ma <aaron.ma@canonical.com>

commit ec667683c532c93fb41e100e5d61a518971060e2 upstream.

Synaptics add new TP firmware ID: 0x2 and 0x3, for now both lower 2 bits
are indicated as TP. Change the constant to bitwise values.

This makes trackpoint to be recognized on Lenovo Carbon X1 Gen5 instead
of it being identified as "PS/2 Generic Mouse".

Signed-off-by: Aaron Ma <aaron.ma@canonical.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/input/mouse/trackpoint.c | 3 ++-
drivers/input/mouse/trackpoint.h | 3 ++-
2 files changed, 4 insertions(+), 2 deletions(-)

--- a/drivers/input/mouse/trackpoint.c
+++ b/drivers/input/mouse/trackpoint.c
@@ -265,7 +265,8 @@ static int trackpoint_start_protocol(str
if (ps2_command(&psmouse->ps2dev, param, MAKE_PS2_CMD(0, 2, TP_READ_ID)))
return -1;

- if (param[0] != TP_MAGIC_IDENT)
+ /* add new TP ID. */
+ if (!(param[0] & TP_MAGIC_IDENT))
return -1;

if (firmware_id)
--- a/drivers/input/mouse/trackpoint.h
+++ b/drivers/input/mouse/trackpoint.h
@@ -21,8 +21,9 @@
#define TP_COMMAND 0xE2 /* Commands start with this */

#define TP_READ_ID 0xE1 /* Sent for device identification */
-#define TP_MAGIC_IDENT 0x01 /* Sent after a TP_READ_ID followed */
+#define TP_MAGIC_IDENT 0x03 /* Sent after a TP_READ_ID followed */
/* by the firmware ID */
+ /* Firmware ID includes 0x1, 0x2, 0x3 */

/*

Patches currently in stable-queue which might be from aaron.ma@canonical.com are

queue-4.12/input-trackpoint-add-new-trackpoint-firmware-id.patch