Mutexes shall be initialized before they are used.

Fixes: 12e510dbc57b2 ("Input: usbtouchscreen - fix deadlock in autosuspend")
Reported-by: syzbot+199ea16c7f26418b4365@syzkaller.appspotmail.com
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details you
  should have received a copy of the gnu general public license along
  with this program if not write to the free software foundation inc
  675 mass ave cambridge ma 02139 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 441 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190520071858.739733335@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Allow querying of the firmware revision of the device

example:

4.10

Tested on ZII RDU2 platform and on Intel x86_64 PC.

Signed-off-by: Nick Dyer <nick@shmanahar.org>
Tested-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

If the device is unused and suspended, a call to open will cause the
device to autoresume through the call to usb_autopm_get_interface().

input_dev->users is already incremented by the input subsystem,
therefore this expression will always be evaluated to true:

	if (input->users || usbtouch->type->irq_always)
		result = usb_submit_urb(usbtouch->irq, GFP_NOIO);

The same URB will then be fail when resubmitted in usbtouch_open().

Introduce usbtouch->is_open to keep track of the state instead.

Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

usb_autopm_get_interface() that is called in usbtouch_open() does an
autoresume if the device is suspended.

input_dev->mutex used in usbtouch_resume() is in this case already
taken by the input subsystem and will cause a deadlock.

Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Inline macro for MODULE_LICENSE to make the license information easy to
find, eg with grep.  Inline the other module-related macros at the same
time.

A simplified version of the semantic patch for the MODULE_LICENSE
case is as follows: (http://coccinelle.lip6.fr/)

// <smpl>
@s@
identifier i; expression e;
@@

@@
declarer name MODULE_LICENSE;
identifier s.i;
expression s.e;
@@
MODULE_LICENSE(
- i
+ e
 );
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
[dtor: added a couple of drivers missed by the script, removed a few unused
 DRIVER_VERSION macros]
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

This patch fixes a problem in the usbtouchscreen driver for DMC TSC-30
touch screen.  Due to a missing delay between the RESET and SET_RATE
commands, the touch screen may become unresponsive during system startup or
driver loading.

According to the DMC documentation, a delay is needed after the RESET
command to allow the chip to complete its internal initialization. As this
delay is not guaranteed, we had a system where the touch screen
occasionally did not send any touch data. There was no other indication of
the problem.

The patch fixes the problem by adding a 150ms delay between the RESET and
SET_RATE commands.

Cc: stable@vger.kernel.org
Suggested-by: Jakob Mustafa <jakob.mustafa@bytecmed.com>
Signed-off-by: Bernhard Bender <bernhard.bender@bytecmed.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

This adds support for another model of IRTOUCH SYSTEMS Co.,LtD infrared
touchscreens. The USB vendorID/deviceID is 6615/0012. It is also sold
under the label "Elektrosil".

The datasheet states that coordinates for x and y are in the range from
0 to 32767.

Signed-off-by: Lars Poeschel <poeschel@lemonage.de>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

None of these files are actually using any __init type directives
and hence don't need to include <linux/init.h>.  Most are just a
left over from __devinit and __cpuinit removal, or simply due to
code getting copied from one driver to the next.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Pull input updates from Dmitry Torokhov:
 "An update to ALPS to support devices on Dell XT2 (hopefully working
  better this time around and although it is largish it should not
  affect any other ALPS devices) and a tiny update to Elantech driver to
  support newer devices as well.

  Also a coupe of new input event codes have been defined"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: ALPS - add support for DualPoint device on Dell XT2 model
  Input: elantech - add support for newer (August 2013) devices
  Input: add SW_MUTE_DEVICE switch definition
  Input: usbtouchscreen - separate report and transmit buffer size handling
  Input: sur40 - suppress false uninitialized variable warning
  Input: add key code for ambient light sensor button
  Input: keyboard - "keycode & KEY_MAX" changes some keycode values