linux.git/drivers/input, branch v4.13-rc2

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

2017-07-15T05:53:37+00:00

Pull a few more input updates from Dmitry Torokhov:

 - multi-touch handling for Xen

 - fix for long-standing bug causing crashes in i8042 on boot

 - change to gpio_keys to better handle key presses during system state
   transition

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: i8042 - fix crash at boot time
  Input: gpio_keys - handle the missing key press event in resume phase
  Input: xen-kbdfront - add multi-touch support

Merge branch 'next' into for-linus

2017-07-12T21:17:17+00:00

Prepare second round of input updates for 4.13 merge window.

Input: i8042 - fix crash at boot time

2017-07-12T18:42:15+00:00

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()]
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov

Input: gpio_keys - handle the missing key press event in resume phase

2017-07-09T21:43:27+00:00

The GPIO key press event might be missed in the resume phase, if the key
had been released before the system had been resumed to the stage that it
could capture the press event. So we simulate the wakeup key press event
in case the key had been released by the time we got interrupt handler
to run.

Signed-off-by: Joseph Lo 
Signed-off-by: Enric Balletbo i Serra 
Signed-off-by: Dmitry Torokhov

Input: xen-kbdfront - add multi-touch support

2017-07-09T21:43:26+00:00

Extend xen_kbdfront to provide multi-touch support to unprivileged domains.

Signed-off-by: Oleksandr Andrushchenko 
[dtor: factor out various sub-protocols - multitouch, single touch, keys]
Signed-off-by: Dmitry Torokhov

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

2017-07-08T19:39:37+00:00

Pull input updates from Dmitry Torokhov:

 - a new driver for STM FingerTip touchscreen

 - a new driver for D-Link DIR-685 touch keys

 - updated list of supported devices in xpad driver

 - other assorted updates and fixes

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (23 commits)
  MAINTAINERS: update input subsystem patterns
  Input: introduce KEY_ASSISTANT
  Input: xpad - sync supported devices with XBCD
  Input: xpad - sync supported devices with 360Controller
  Input: xen-kbdfront - use string constants from PV protocol
  Input: stmfts - mark all PM functions as __maybe_unused
  Input: add support for the STMicroelectronics FingerTip touchscreen
  Input: add D-Link DIR-685 touchkeys driver
  Input: s3c2410_ts - handle return value of clk_prepare_enable
  Input: axp20x-pek - add wakeup support
  Input: synaptics-rmi4 - use %phN to form F34 configuration ID
  Input: synaptics-rmi4 - change a char type to u8
  Input: sparse-keymap - remove sparse_keymap_free()
  Input: tsc2007 - move header file out of I2C realm
  Input: mms114 - move header file out of I2C realm
  Input: mcs - move header file out of I2C realm
  Input: lm8323 - move header file out of I2C realm
  Input: elantech - force relative mode on a certain module
  Input: elan_i2c - add support for fetching chip type on newer hardware
  Input: elan_i2c - check if device is there before really probing
  ...

Merge tag 'gpio-v4.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

2017-07-07T19:40:27+00:00

Pull GPIO updates from Linus Walleij:
"This is the bulk of GPIO changes for the v4.13 series.

Some administrativa:

I have a slew of 8250 serial patches and the new IOT2040 serial+GPIO
driver coming in through this tree, along with a whole bunch of Exar
8250 fixes. These are ACKed by Greg and also hit drivers/platform/*
where they are ACKed by Andy Shevchenko.

Speaking about drivers/platform/* there is also a bunch of ACPI stuff
coming through that route, again ACKed by Andy.

The MCP23S08 changes are coming in here as well. You already have the
commits in your tree, so this is just a result of sharing an immutable
branch between pin control and GPIO.

Core:
- Export add/remove for lookup tables so that modules can export GPIO
descriptor tables.
- Handle GPIO sleep states: it is now possible to flag that a GPIO
line may loose its state during suspend/resume of the system to
save power. This is used in the Wolfson Micro Arizona driver.
- ACPI-based GPIO was tightened up a lot around the edges.
- Use bitmap_fill() to speed up a loop.

New drivers:
- Exar XRA1403 SPI-based GPIO.
- MVEBU driver now supports Armada 7K and 8K.
- LP87565 PMIC GPIO.
- Renesas R-CAR R8A7743 (RZ/G1M).
- The new IOT2040 8250 serial/GPIO also comes in through this
changeset.

Substantial driver changes:
- Seriously fix the Exar 8250 GPIO portions to work.
- The MCP23S08 was moved out to a pin control driver.
- Convert MEVEBU to use regmap for register access.
- Drop Vulcan support from the Broadcom driver.
- Serious cleanup and improvement of the mockup driver, giving us a
better test coverage.

Misc:
- Lots of janitorial clean up.
- A bunch of documentation fixes"

* tag 'gpio-v4.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (70 commits)
serial: exar: Add support for IOT2040 device
gpio-exar/8250-exar: Make set of exported GPIOs configurable
platform: Accept const properties
serial: exar: Factor out platform hooks
gpio-exar/8250-exar: Rearrange gpiochip parenthood
gpio: exar: Fix iomap request
gpio-exar/8250-exar: Do not even instantiate a GPIO device for Commtech cards
serial: uapi: Add support for bus termination
gpio: rcar: Add R8A7743 (RZ/G1M) support
gpio: gpio-wcove: Fix GPIO control register offset calculation
gpio: lp87565: Add support for GPIO
gpio: dwapb: fix missing first irq for edgeboth irq type
MAINTAINERS: Take maintainership for GPIO ACPI support
gpio: exar: Fix reading of directions and values
gpio: exar: Allocate resources on behalf of the platform device
gpio-exar/8250-exar: Fix passing in of parent PCI device
gpio: mockup: use devm_kcalloc() where applicable
gpio: mockup: add myself as author
gpio: mockup: improve the error message
gpio: mockup: don't return magic numbers from probe()
...

Merge branch 'work.probe_kernel_read' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2017-07-07T05:06:11+00:00

Pull probe_kernel_read() uses from Al Viro:
 "Several open-coded probe_kernel_read()..."

* 'work.probe_kernel_read' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  dio: use probe_kernel_read()
  hp_sdc: use probe_kernel_read()
  hpfb: use probe_kernel_read()

Merge branch 'next' into for-linus

2017-07-06T20:51:43+00:00

Prepare input updates for 4.13 merge window.

Input: synaptics-rmi4 - only read the F54 query registers which are used

2017-06-23T07:08:48+00:00

The F54 driver is currently only using the first 6 bytes of F54 so there is
no need to read all 27 bytes. Some Dell systems (Dell XP13 9333 and
similar) have an issue with the touchpad or I2C bus when reading reports
larger then 16 bytes. Reads larger then 16 bytes are reported in two HID
reports. Something about the back to back reports seems to cause the next
read to report incorrect data. This results in F30 failing to load and the
click button failing to work.

Previous issues with the I2C controller or touchpad were addressed in:
commit 5b65c2a02966 ("HID: rmi: check sanity of the incoming report")

Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=195949
Signed-off-by: Andrew Duggan 
Reviewed-by: Benjamin Tissoires 
Reviewed-by: Nick Dyer 
Signed-off-by: Dmitry Torokhov