linux.git/drivers/input/mouse, branch v5.4.164

Input: elantench - fix misreporting trackpoint coordinates

2021-11-17T08:48:16+00:00

commit be896bd3b72b44126c55768f14c22a8729b0992e upstream.

Some firmwares occasionally report bogus data from trackpoint, with X or Y
displacement being too large (outside of [-127, 127] range). Let's drop such
packets so that we do not generate jumps.

Signed-off-by: Phoenix Huang 
Tested-by: Yufei Du 
Link: https://lore.kernel.org/r/20210729010940.5752-1-phoenix@emc.com.tw
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman

Input: elantech - fix protocol errors for some trackpoints in SMBus mode

2021-03-07T11:20:41+00:00

commit e4c9062717feda88900b566463228d1c4910af6d upstream.

There are some version of Elan trackpads that send incorrect data when
in SMbus mode, unless they are switched to use 0x5f reports instead of
standard 0x5e. This patch implements querying device to retrieve chips
identifying data, and switching it, when needed to the alternative
report.

Signed-off-by: Jingle Wu 
Link: https://lore.kernel.org/r/20201211071531.32413-1-jingle.wu@emc.com.tw
Signed-off-by: Dmitry Torokhov 
Cc: Uwe Kleine-König 
Signed-off-by: Greg Kroah-Hartman

Input: cyapa_gen6 - fix out-of-bounds stack access

2020-12-30T10:51:32+00:00

commit f051ae4f6c732c231046945b36234e977f8467c6 upstream.

gcc -Warray-bounds warns about a serious bug in
cyapa_pip_retrieve_data_structure:

drivers/input/mouse/cyapa_gen6.c: In function 'cyapa_pip_retrieve_data_structure.constprop':
include/linux/unaligned/access_ok.h:40:17: warning: array subscript -1 is outside array bounds of 'struct retrieve_data_struct_cmd[1]' [-Warray-bounds]
   40 |  *((__le16 *)p) = cpu_to_le16(val);
drivers/input/mouse/cyapa_gen6.c:569:13: note: while referencing 'cmd'
  569 |  } __packed cmd;
      |             ^~~

Apparently the '-2' was added to the pointer instead of the value,
writing garbage into the stack next to this variable.

Fixes: c2c06c41f700 ("Input: cyapa - add gen6 device module support")
Signed-off-by: Arnd Bergmann 
Link: https://lore.kernel.org/r/20201026161332.3708389-1-arnd@kernel.org
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman

Input: trackpoint - enable Synaptics trackpoints

2020-10-07T06:01:29+00:00

[ Upstream commit 996d585b079ad494a30cac10e08585bcd5345125 ]

Add Synaptics IDs in trackpoint_start_protocol() to mark them as valid.

Signed-off-by: Vincent Huang 
Fixes: 6c77545af100 ("Input: trackpoint - add new trackpoint variant IDs")
Reviewed-by: Harry Cutts 
Tested-by: Harry Cutts 
Link: https://lore.kernel.org/r/20200924053013.1056953-1-vincent.huang@tw.synaptics.com
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Sasha Levin

Input: trackpoint - add new trackpoint variant IDs

2020-09-23T10:40:45+00:00

commit 6c77545af100a72bf5e28142b510ba042a17648d upstream.

Add trackpoint variant IDs to allow supported control on Synaptics
trackpoints.

Signed-off-by: Vincent Huang 
Link: https://lore.kernel.org/r/20200914120327.2592-1-vincent.huang@tw.synaptics.com
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman

Input: psmouse - add a newline when printing 'proto' by sysfs

2020-08-26T08:40:55+00:00

[ Upstream commit 4aec14de3a15cf9789a0e19c847f164776f49473 ]

When I cat parameter 'proto' by sysfs, it displays as follows. It's
better to add a newline for easy reading.

root@syzkaller:~# cat /sys/module/psmouse/parameters/proto
autoroot@syzkaller:~#

Signed-off-by: Xiongfeng Wang 
Link: https://lore.kernel.org/r/20200720073846.120724-1-wangxiongfeng2@huawei.com
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Sasha Levin

Input: sentelic - fix error return when fsp_reg_write fails

2020-08-21T11:05:36+00:00

[ Upstream commit ea38f06e0291986eb93beb6d61fd413607a30ca4 ]

Currently when the call to fsp_reg_write fails -EIO is not being returned
because the count is being returned instead of the return value in retval.
Fix this by returning the value in retval instead of count.

Addresses-Coverity: ("Unused value")
Fixes: fc69f4a6af49 ("Input: add new driver for Sentelic Finger Sensing Pad")
Signed-off-by: Colin Ian King 
Link: https://lore.kernel.org/r/20200603141218.131663-1-colin.king@canonical.com
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Sasha Levin

Input: elan_i2c - only increment wakeup count on touch

2020-07-29T08:18:38+00:00

[ Upstream commit 966334dfc472bdfa67bed864842943b19755d192 ]

This moves the wakeup increment for elan devices to the touch report.
This prevents the drivers from incorrectly reporting a wakeup when the
resume callback resets then device, which causes an interrupt to
occur.

Signed-off-by: Derek Basehore 
Link: https://lore.kernel.org/r/20200706235046.1984283-1-dbasehore@chromium.org
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Sasha Levin

Input: synaptics - enable InterTouch for ThinkPad X1E 1st gen

2020-07-29T08:18:37+00:00

[ Upstream commit dcb00fc799dc03fd320e123e4c81b3278c763ea5 ]

Tested on my own laptop, touchpad feels slightly more responsive with
this on, though it might just be placebo.

Signed-off-by: Ilya Katsnelson 
Reviewed-by: Lyude Paul 
Link: https://lore.kernel.org/r/20200703143457.132373-1-me@0upti.me
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Sasha Levin

Input: synaptics - add a second working PNP_ID for Lenovo T470s

2020-06-17T14:40:21+00:00

[ Upstream commit 642aa86eaf8f1e6fe894f20fd7f12f0db52ee03c ]

The Lenovo Thinkpad T470s I own has a different touchpad with "LEN007a"
instead of the already included PNP ID "LEN006c". However, my touchpad
seems to work well without any problems using RMI. So this patch adds the
other PNP ID.

Signed-off-by: Dennis Kadioglu 
Link: https://lore.kernel.org/r/ff770543cd53ae818363c0fe86477965@mail.eclipso.de
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Sasha Levin