linux-toradex.git/drivers/input, branch v4.9.78

Input: twl4030-vibra - fix sibling-node lookup

2018-01-23T18:57:07+00:00

commit 5b189201993ab03001a398de731045bfea90c689 upstream.

A helper purported to look up a child node based on its name was using
the wrong of-helper and ended up prematurely freeing the parent of-node
while searching the whole device tree depth-first starting at the parent
node.

Fixes: 64b9e4d803b1 ("input: twl4030-vibra: Support for DT booted kernel")
Fixes: e661d0a04462 ("Input: twl4030-vibra - fix ERROR: Bad of_node_put() warning")
Signed-off-by: Johan Hovold 
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman

Input: twl6040-vibra - fix child-node lookup

2018-01-23T18:57:07+00:00

commit dcaf12a8b0bbdbfcfa2be8dff2c4948d9844b4ad upstream.

Fix child-node lookup during probe, which ended up searching the whole
device tree depth-first starting at parent rather than just matching on
its children.

Later sanity checks on node properties (which would likely be missing)
should prevent this from causing much trouble however, especially as the
original premature free of the parent node has already been fixed
separately (but that "fix" was apparently never backported to stable).

Fixes: e7ec014a47e4 ("Input: twl6040-vibra - update for device tree support")
Fixes: c52c545ead97 ("Input: twl6040-vibra - fix DT node memory management")
Signed-off-by: Johan Hovold 
Acked-by: Peter Ujfalusi 
Tested-by: H. Nikolaus Schaller  (on Pyra OMAP5 hardware)
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman

Input: 88pm860x-ts - fix child-node lookup

2018-01-23T18:57:07+00:00

commit 906bf7daa0618d0ef39f4872ca42218c29a3631f upstream.

Fix child node-lookup during probe, which ended up searching the whole
device tree depth-first starting at parent rather than just matching on
its children.

To make things worse, the parent node was prematurely freed, while the
child node was leaked.

Fixes: 2e57d56747e6 ("mfd: 88pm860x: Device tree support")
Signed-off-by: Johan Hovold 
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman

Input: ALPS - fix multi-touch decoding on SS4 plus touchpads

2018-01-23T18:57:07+00:00

commit 4d94e776bd29670f01befa27e12df784fa05fa2e upstream.

The fix for handling two-finger scroll (i4a646580f793 - "Input: ALPS -
fix two-finger scroll breakage in right side on ALPS touchpad")
introduced a minor "typo" that broke decoding of multi-touch events are
decoded on some ALPS touchpads.  For example, tapping with three-fingers
can no longer be used to emulate middle-mouse-button (the kernel doesn't
recognize this as the proper event, and doesn't report it correctly to
userspace).  This affects touchpads that use SS4 "plus" protocol
variant, like those found on Dell E7270 & E7470 laptops (tested on
E7270).

First, probably the code in alps_decode_ss4_v2() for case
SS4_PACKET_ID_MULTI used inconsistent indices to "f->mt[]". You can see
0 & 1 are used for the "if" part but 2 & 3 are used for the "else" part.

Second, in the previous patch, new macros were introduced to decode X
coordinates specific to the SS4 "plus" variant, but the macro to
define the maximum X value wasn't changed accordingly. The macros to
decode X values for "plus" variant are effectively shifted right by 1
bit, but the max wasn't shifted too. This causes the driver to
incorrectly handle "no data" cases, which also interfered with how
multi-touch was handled.

Fixes: 4a646580f793 ("Input: ALPS - fix two-finger scroll breakage...")
Signed-off-by: Nir Perry 
Reviewed-by: Masaki Ota 
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman

Input: elantech - add new icbody type 15

2018-01-10T08:29:53+00:00

commit 10d900303f1c3a821eb0bef4e7b7ece16768fba4 upstream.

The touchpad of Lenovo Thinkpad L480 reports it's version as 15.

Signed-off-by: Aaron Ma 
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman

Input: i8042 - add TUXEDO BU1406 (N24_25BU) to the nomux list

2017-12-20T09:07:20+00:00

[ Upstream commit a4c2a13129f7c5bcf81704c06851601593303fd5 ]

TUXEDO BU1406 does not implement active multiplexing mode properly,
and takes around 550 ms in i8042_set_mux_mode(). Given that the
device does not have external AUX port, there is no downside in
disabling the MUX mode.

Reported-by: Paul Menzel 
Suggested-by: Vojtech Pavlik 
Reviewed-by: Marcos Paulo de Souza 
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

Input: ims-psu - check if CDC union descriptor is sane

2017-11-18T10:22:24+00:00

commit ea04efee7635c9120d015dcdeeeb6988130cb67a upstream.

Before trying to use CDC union descriptor, try to validate whether that it
is sane by checking that intf->altsetting->extra is big enough and that
descriptor bLength is not too big and not too small.

Reported-by: Andrey Konovalov 
Signed-off-by: Dmitry Torokhov 
Cc: Ben Hutchings 
Signed-off-by: Greg Kroah-Hartman

Input: elan_i2c - add ELAN060C to the ACPI table

2017-11-15T14:53:19+00:00

commit cdea6a30c2689cc33b34c6691b57cca277f0c5dc upstream.

ELAN060C touchpad uses elan_i2c as its driver. It can be
found on Lenovo ideapad 320-14AST.

BugLink: https://bugs.launchpad.net/bugs/1727544
Signed-off-by: Kai-Heng Feng 
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman

Input: mpr121 - set missing event capability

2017-11-15T14:53:16+00:00

[ Upstream commit 9723ddc8fe0d76ce41fe0dc16afb241ec7d0a29d ]

This driver reports misc scan input events on the sensor's status
register changes.  But the event capability for them was not set in the
device initialization, so these events were ignored.

This change adds the missing event capability.

Signed-off-by: Akinobu Mita 
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

Input: mpr121 - handle multiple bits change of status register

2017-11-15T14:53:15+00:00

[ Upstream commit 08fea55e37f58371bffc5336a59e55d1f155955a ]

This driver reports input events on their interrupts which are triggered
by the sensor's status register changes.  But only single bit change is
reported in the interrupt handler.  So if there are multiple bits are
changed at almost the same time, other press or release events are ignored.

This fixes it by detecting all changed bits in the status register.

Signed-off-by: Akinobu Mita 
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman