linux-stable.git/drivers/input, branch v3.16.50

Input: joystick - use get_cycles on ARMv8

2017-11-11T13:33:45+00:00

commit a6b48699ae50ccce700506ced863ba1f5ce2af11 upstream.

As with ARM the ARMv8 architecture provides a cycle counter which can be
used to provide a high resolution time for the joystick driver and
silence the build warning that results from not having a precise timer
on ARMv8, making allmodconfig and allyesconfig quieter.

Signed-off-by: Mark Brown 
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Arnd Bergmann 
Signed-off-by: Ben Hutchings

Input: gscps2 - fix MODULE_DEVICE_TABLE invocation

2017-11-11T13:33:42+00:00

commit 6c8afa88adce613c23f27e719f805cc2a6441b07 upstream.

The patch "module: fix types of device tables aliases" newly requires
that invocations of

MODULE_DEVICE_TABLE(type, name);

come *after* the definition of `name'.  That is reasonable, but gscps2
wasn't doing this.  Fix it.

Signed-off-by: Geert Uytterhoeven 
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Ben Hutchings

Input: trackpoint - add new trackpoint firmware ID

2017-11-11T13:33:23+00:00

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 
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Ben Hutchings

Input: ads7846 - correct the value got from SPI

2017-10-12T14:28:16+00:00

commit 879f2fea8a5a748bcbf98d2cdce9139c045505d3 upstream.

According to the touch controller spec, SPI return a 16 bit value, only 12
bits are valid, they are bit[14-3].

The value of MISO and MOSI can be configured when SPI is in idle mode.
Currently this touch driver assumes the SPI bus sets the MOSI and MISO in
low level when SPI bus is in idle mode. So the bit[15] of the value got
from SPI bus is always 0. But when SPI bus congfigures the MOSI and MISO in
high level during the SPI idle mode, the bit[15] of the value get from SPI
is always 1. If bit[15] is not masked, we may get the wrong value.

Mask the invalid bit to make sure the correct value gets returned.
Regardless of the SPI bus idle configuration.

Signed-off-by: Andrey Gelman 
Signed-off-by: Haibo Chen 
Signed-off-by: Igor Grinberg 
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Ben Hutchings

Input: i8042 - fix crash at boot time

2017-10-12T14:28:05+00:00

commit 340d394a789518018f834ff70f7534fc463d3226 upstream.

The driver checks port->exists twice in i8042_interrupt(), first when
trying to assign temporary "serio" variable, and second time when deciding
whether it should call serio_interrupt(). The value of port->exists may
change between the 2 checks, and we may end up calling serio_interrupt()
with a NULL pointer:

BUG: unable to handle kernel NULL pointer dereference at 0000000000000050
IP: [] _spin_lock_irqsave+0x1f/0x40
PGD 0
Oops: 0002 [#1] SMP
last sysfs file:
CPU 0
Modules linked in:

Pid: 1, comm: swapper Not tainted 2.6.32-358.el6.x86_64 #1 QEMU Standard PC (i440FX + PIIX, 1996)
RIP: 0010:[]  [] _spin_lock_irqsave+0x1f/0x40
RSP: 0018:ffff880028203cc0  EFLAGS: 00010082
RAX: 0000000000010000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000282 RSI: 0000000000000098 RDI: 0000000000000050
RBP: ffff880028203cc0 R08: ffff88013e79c000 R09: ffff880028203ee0
R10: 0000000000000298 R11: 0000000000000282 R12: 0000000000000050
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000098
FS:  0000000000000000(0000) GS:ffff880028200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
CR2: 0000000000000050 CR3: 0000000001a85000 CR4: 00000000001407f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process swapper (pid: 1, threadinfo ffff88013e79c000, task ffff88013e79b500)
Stack:
ffff880028203d00 ffffffff813de186 ffffffffffffff02 0000000000000000
 0000000000000000 0000000000000000 0000000000000000 0000000000000098
 ffff880028203d70 ffffffff813e0162 ffff880028203d20 ffffffff8103b8ac
Call Trace:

 [] serio_interrupt+0x36/0xa0
[] i8042_interrupt+0x132/0x3a0
[] ? kvm_clock_read+0x1c/0x20
[] ? kvm_clock_get_cycles+0x9/0x10
[] handle_IRQ_event+0x60/0x170
[] ? kvm_guest_apic_eoi_write+0x44/0x50
[] handle_edge_irq+0xde/0x180
[] handle_irq+0x49/0xa0
[] do_IRQ+0x6c/0xf0
[] ret_from_intr+0x0/0x11
[] ? __do_softirq+0x73/0x1e0
[] ? hrtimer_interrupt+0x14b/0x260
[] ? call_softirq+0x1c/0x30
[] ? do_softirq+0x65/0xa0
[] ? irq_exit+0x85/0x90
[] ? smp_apic_timer_interrupt+0x70/0x9b
[] ? apic_timer_interrupt+0x13/0x20

To avoid the issue let's change the second check to test whether serio is
NULL or not.

Also, let's take i8042_lock in i8042_start() and i8042_stop() instead of
trying to be overly smart and using memory barriers.

Signed-off-by: Chen Hong 
[dtor: take lock in i8042_start()/i8042_stop()]
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Ben Hutchings

Input: i8042 - add Fujitsu Lifebook AH544 to notimeout list

2017-09-15T17:30:12+00:00

commit 817ae460c784f32cd45e60b2b1b21378c3c6a847 upstream.

Without this quirk, the touchpad is not responsive on this product, with
the following message repeated in the logs:

 psmouse serio1: bad data from KBC - timeout

Add it to the notimeout list alongside other similar Fujitsu laptops.

Signed-off-by: Daniel Drake 
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Ben Hutchings

Input: elantech - add Fujitsu Lifebook E546/E557 to force crc_enabled

2017-09-15T17:30:05+00:00

commit 47eb0c8b4d9eb6368941c6a9bb443f00847a46d7 upstream.

The Lifebook E546 and E557 touchpad were also not functioning and
worked after running:

        echo "1" > /sys/devices/platform/i8042/serio2/crc_enabled

Add them to the list of machines that need this workaround.

Signed-off-by: Ulrik De Bie 
Reviewed-by: Arjan Opmeer 
Signed-off-by: Dmitry Torokhov 
[bwh: Backported to 3.16: adjust context]
Signed-off-by: Ben Hutchings

Input: twl4030-pwrbutton - use correct device for irq request

2017-08-26T01:14:42+00:00

commit 3071e9dd6cd3f2290d770117330f2c8b2e9a97e4 upstream.

The interrupt should be requested for the platform device
and not for the input device.

Fixes: 7f9ce649d267 ("Input: twl4030-pwrbutton - simplify driver using devm_*")
Signed-off-by: Sebastian Reichel 
Signed-off-by: Dmitry Torokhov 
[bwh: Backported to 3.16: adjust context]
Signed-off-by: Ben Hutchings

Input: i8042 - add Clevo P650RS to the i8042 reset list

2017-07-18T17:40:38+00:00

commit 7c5bb4ac2b76d2a09256aec8a7d584bf3e2b0466 upstream.

Clevo P650RS and other similar devices require i8042 to be reset in order
to detect Synaptics touchpad.

Reported-by: Paweł Bylica 
Tested-by: Ed Bordin 
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=190301
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Ben Hutchings

Input: elantech - add Fujitsu Lifebook E547 to force crc_enabled

2017-07-18T17:40:36+00:00

commit 704de489e0e3640a2ee2d0daf173e9f7375582ba upstream.

Temporary got a Lifebook E547 into my hands and noticed the touchpad
only works after running:

	echo "1" > /sys/devices/platform/i8042/serio2/crc_enabled

Add it to the list of machines that need this workaround.

Signed-off-by: Thorsten Leemhuis 
Reviewed-by: Ulrik De Bie 
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Ben Hutchings