git.ipfire.org Git - thirdparty/kernel/stable-queue.git/blob

   1 From 15e2cffec3aa0d47a8d75ae80e1b136bfb5dff30 Mon Sep 17 00:00:00 2001
   2 From: Edvard Holst <edvard.holst@gmail.com>
   3 Date: Sat, 3 Feb 2018 11:46:15 -0800
   4 Subject: Input: synaptics - Lenovo Thinkpad X1 Carbon G5 (2017) with Elantech trackpoints should use RMI
   5
   6 From: Edvard Holst <edvard.holst@gmail.com>
   7
   8 commit 15e2cffec3aa0d47a8d75ae80e1b136bfb5dff30 upstream.
   9
  10 Lenovo use two different trackpoints in the fifth generation Thinkpad X1
  11 Carbon. Both are accessible over SMBUS/RMI but the pnpIDs are missing.
  12 This patch is for the Elantech trackpoint specifically which also
  13 reports SMB version 3 so rmi_smbus needs to be updated in order to
  14 handle it.
  15
  16 For the record, I was not the first one to come up with this patch as it
  17 has been floating around the internet for a while now. However, I have
  18 spent significant time with testing and my efforts to find the original
  19 author of the patch have been unsuccessful.
  20
  21 Signed-off-by: Edvard Holst <edvard.holst@gmail.com>
  22 Cc: stable@vger.kernel.org
  23 Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
  24 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  25
  26 ---
  27  drivers/input/mouse/synaptics.c |    1 +
  28  1 file changed, 1 insertion(+)
  29
  30 --- a/drivers/input/mouse/synaptics.c
  31 +++ b/drivers/input/mouse/synaptics.c
  32 @@ -173,6 +173,7 @@ static const char * const smbus_pnp_ids[
  33         "LEN0046", /* X250 */
  34         "LEN004a", /* W541 */
  35         "LEN0072", /* X1 Carbon Gen 5 (2017) - Elan/ALPS trackpoint */
  36 +       "LEN0073", /* X1 Carbon G5 (Elantech) */
  37         "LEN200f", /* T450s */
  38         NULL
  39  };