staging: comedi: ni_routing: Add NI signal routing info

See README for a thorough discussion of this content.

Adds tables of all register values for routing various signals to various
terminals on National Instruments hardware.  This information is directly
compared to and taken from register-level programming documentation and/or
register-level programming examples as provided by National Instruments.

Furthermore, this information was mostly compared (favorably) to the
register values already used in the comedi drivers for NI hardware.

Adds tables of valid routes for many devices.  This information is not
consistent from device to device, nor entirely consistent within device
families.  One additional major challenge is that this information does not
seem to be obtainable in any programmatic fashion, neither through the
proprietary NIDAQmx(-base) c-libraries, nor with register level
programming, _nor_ through any documentation.  In fact, the only consistent
source of this information is through the proprietary NI-MAX software,
which currently only runs on Windows platforms.  A further challenge is
that this information cannot be exported from NI-MAX, except by screenshot.

The collection and maintenance of this information is somewhat tedious and
requires frequent re-examination and comparison of NI-MAX and/or the
NI-MHDDK documentation (register programming information) and NI-MHDDK
examples.  Tools are added with this patch to facilitate generating CSV
files from the data tables.  These CSV files can be used with a spreadsheet
program to provide better visual comparision with screenshots gathered from
NI-MAX.  Tools are also added to regenerate the data tables from CSV
content--this greatly enhances updating data tables with large changes
(such as when adding devices).

Signed-off-by: Spencer E. Olson <olsonse@umich.edu>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: add new device-global config interface

Adds interface for configuring options that are global to all sub-devices.
For now, only options to configure device-globally identified signal routes
have been defined.

Signed-off-by: Spencer E. Olson <olsonse@umich.edu>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: add abstracted NI signal/terminal named constants

This change adds abstracted constants for National Instruments
terminal/signal names.

Some background:
  There have been significant confusions over the past many years for users
  when trying to understand how to connect to/from signals and terminals on
  NI hardware using comedi.  The major reason for this is that the actual
  register values were exposed and required to be used by users.  Several
  major reasons exist why this caused major confusion for users:

  1) The register values are _NOT_ in user documentation, but rather in
    arcane locations, such as a few register programming manuals that are
    increasingly hard to find and the NI-MHDDK (comments in in example
    code).  There is no one place to find the various valid values of the
    registers.

  2) The register values are _NOT_ completely consistent.  There is no way
    to gain any sense of intuition of which values, or even enums one
    should use for various registers.  There was some attempt in prior use
    of comedi to name enums such that a user might know which enums should
    be used for varying purposes, but the end-user had to gain a knowledge
    of register values to correctly wield this approach.

  3) The names for signals and registers found in the various register
    level programming manuals and vendor-provided documentation are _not_
    even close to the same names that are in the end-user documentation.

Similar confusion, albeit less, plagued NI's previous version of their own
proprietary drivers.  Earlier than 2003, NI greatly simplified the
situation for users by releasing a new API that abstracted the names of
signals/terminals to a common and intuitive set of names.  In addition,
this new API provided a much more common interface to use for most of NI
hardware.

The names added here mirror the names chosen and well documented by NI.
These names are exposed to the user via the comedilib user library.  By
keeping the names in this format, in spite of the use of CamelScript,
maintenance will be greatly eased and confusion for users _and_ comedi
developers will be greatly reduced.

Signed-off-by: Spencer E. Olson <olsonse@umich.edu>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: tests: add unittest framework for comedi

Adds a framework for unittests for comedi drivers.  It was certainly
possible to write some unit tests before and test various aspects of a
particular driver, but this framework makes this a bit easier and hopefully
inspires more unittest modules to be written.

Signed-off-by: Spencer E. Olson <olsonse@umich.edu>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: comedi_test: implement INSN_CONFIG_GET_CMD_TIMING_CONSTRAINTS

Adds implementation of the new INSN_CONFIG_GET_CMD_TIMING_CONSTRAINTS
instruction.

Signed-off-by: Spencer E. Olson <olsonse@umich.edu>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: ni_pcidio: implement INSN_CONFIG_GET_CMD_TIMING_CONSTRAINTS

Adds implementation of the new INSN_CONFIG_GET_CMD_TIMING_CONSTRAINTS
instruction.  This patch also adds data for this implementation, based on
spec sheets from NI.

Signed-off-by: Spencer E. Olson <olsonse@umich.edu>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: ni_mio_common: implement INSN_CONFIG_GET_CMD_TIMING_CONSTRAINTS

Adds implementation of the new INSN_CONFIG_GET_CMD_TIMING_CONSTRAINTS
instruction.  This patch also adds data for digital subdevices that are
streaming capable (within the ni_mio_* family).  Mostly, only the m-series
devices are capable of digital streaming.

Signed-off-by: Spencer E. Olson <olsonse@umich.edu>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: add facility to directly query subdevice timing constraints

Adds facility to directly query the hardware speed limits of subdevices,
in particular for scan_begin and convert signals.  This information can be
critical for integrating comedi with other hardware modules, and also
comedi modules together with software where software requires specific
timing capabilities in order to properly coordinate multiple devices.

Currently, comedi_command_test almost satisfies this need, but really only
for when *_src == TRIG_TIMER.  For *_src == TRIG_EXT, comedi_command_test
does not help at all.  For many subdevices, one might simply use
*_src==TRIG_TIMER in command_test in order to determine these limits.  For
other subdevices, this tactic does not work since *_src == TRIG_TIMER might
not be valid.  There is also the possibility that the timing limits are
different between the TRIG_TIMER and TRIG_EXT modes.

Signed-off-by: Spencer E. Olson <olsonse@umich.edu>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging:rtl8192u: Correct comparison with NULL - Style

Correct code to remote comparison with NULL, this clears the resulting
checkpatch issue.

This is a coding style change which should not impact runtime code
execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging:rtl8192u: Correct code alignment - Style

Correct the alignment of a function, this clears checkpatch issue.

This is a simple coding style change which should not impact runtime
code execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging:rtl8192u: Remove unnecessary line continuation - Style

Remove the unnecessary line continuation character to clear checkpatch
issue.

This is a simple coding style change which should not impact runtime
code execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging:rtl8192u: Add missing blank lines - Style

Add missing blank lines after declarations. This clears the resulting
checkpatch issue.

This is a simple coding style change which should not impact runtime
code execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging:rtl8192u: Correct code indentation - Style

Rewrite code block to correct the indentation of code. This clears the
resulting checkpatch issue.

This is a coding style change which should not impact runtime code
execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging:rtl8192u: Add spaces around + operator - Style

Add spaces around '+' operator to clear the checkpatch issue.

This is a coding style change which should have no impact on runtime
code execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging:rtl8192u: Remove extra blank lines - Style

Remove the extra blank lines to clear checkpatch issue.

This is a simple coding style change which should have no impact
on runtime code execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging:rtl8192u: Clear error with line ending ( - Style

Rewrite function call to clear the checkpatch issue with lines ending
with a '(' character.

This is a coding style change which should have no impact on runtime
code execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging:rtl8192u: Removed commented out include - Style

Remove commented out #include directive.

Additionally shorted a block comment to clear the checkpatch issue
with line length.

These are coding style changes which should have no impact on runtime
code execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging:rtl8192u: Add missing SPDX-License-Identifier - Style

Add the missing SPDX-License-Identifier tag to file to clear the
checkpatch issue.

This is a coding style change which should have no impact on runtime
code execution.

Signed-off-by: John Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: vc04_services: Drop no longer needed headers

Previously, connection.h was only required for the definition of
VCHI_CONNECTION_T, but now all usages of it are gone. Remove this unused
header.

After connection.h is gone, message.h and vchi_cfg_internal.h are no
longer referenced by anything either. Drop them as well.

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
Acked-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: vc04_services: Drop unused parameters from vchi_connect()

Remove two parameters which are never used and all where all callers
just pass in dummy values anyway.

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
Acked-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: vc04_services: Drop VCHI_SERVICE_INIT and SERVICE_INFO_T

These types are not used anywhere, remove them.

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
Acked-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: vc04_services: Drop declaration of vchi_crc_control()

There is no definition for this unused function, so drop its prototype.

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
Acked-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: vc04_services: Drop trivially unused fields from SERVICE_CREATION_T

These fields are only initialized with constants and never read. Drop
them.

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
Acked-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: vc04_services: Drop 'connection' field from SERVICE_CREATION_T

The connection field of SERVICE_CREATION_T is assigned to but its value
is never read. Drop the field and the resulting no longer needed code
from bcm2835-audio and bcm2835-camera.

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
Acked-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: vc04_services: Drop pointless stub functions

These functions do nothing besides returning NULL and are unused.
Just drop them.

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
Acked-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: ni_mio_common: protect register write overflow

Fixes two problems introduced as early as
commit 03aef4b6dc12  ("Staging: comedi: add ni_mio_common code"):
(1) Ensures that the last four bits of NISTC_RTSI_TRIGB_OUT_REG register is
    not unduly overwritten on e-series devices.  On e-series devices, the
    first three of the last four bits are reserved.  The last bit defines
    the output selection of the RGOUT0 pin, otherwise known as
    RTSI_Sub_Selection.  For m-series devices, these last four bits are
    indeed used as the output selection of the RTSI7 pin (and the
    RTSI_Sub_Selection bit for the RGOUT0 pin is moved to the
    RTSI_Trig_Direction register.
(2) Allows all 4 RTSI_BRD lines to be treated as valid sources for RTSI
    lines.

This patch also cleans up the ni_get_rtsi_routing command for readability.

Fixes: 03aef4b6dc12  ("Staging: comedi: add ni_mio_common code")
Signed-off-by: Spencer E. Olson <olsonse@umich.edu>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: add spaces around operators in odm_rtl8188e.c

Add spaces around '|', '>>' and '/' to follow kernel coding style.
Reported by checkpatch.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: remove dead code from dm_fast_training_init()

The variable AntCombination is initialized to 2 and never changed.
So the else if path is never used. Remove the dead code and the
variable AntCombination.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: remove whitespace in rtw_mlme_ext.h

Remove spaces and/or replace tabs with spaces in some declarations
in rtw_mlme_ext.h.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: make struct field of action_handler const

The strings in the use of struct action_handler are constant.
Change the type of field str from 'char *' to 'const char *'.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: make struct field of mlme_handler const

The strings in the uses of struct mlme_handler are constant.
Change the type of field str from 'char *' to 'const char *'.

Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: change array type to const u8

Change the type of MCS_rate_1R from unsigned char to const u8.

Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: rewrite if tests - style

Rewrite if tests to clear a 'line over 80 characters' and
'Comparisons should place the constant on the right side of the test'
checkpatch warning.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: cleanup array declaration - style

Cleanup array declaration to clear two 'line over 80 characters'
checkpatch warnings and improve readability.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: fix line over 80 characters - style

Line break array declaration to clear a 'line over 80 characters'
checkpatch warning. For consistency replace 0x0 with 0x00.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: mt7621-mmc: Add blank line after declaration

Add blank line after declaration.
Reported by checkpatch.

Signed-off-by: Jaakko Tyynismaa <jaakko.tyynismaa@hotmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: emxx_udc: Remove unused device_desc declaration

Clang warns:

drivers/staging/emxx_udc/emxx_udc.c:1373:37: warning: variable
'device_desc' is not needed and will not be emitted
[-Wunneeded-internal-declaration]
static struct usb_device_descriptor device_desc = {
                                    ^
1 warning generated.

This definition hasn't been attached to anything since the driver was
introduced in commit 33aa8d45a4fe ("staging: emxx_udc: Add Emma Mobile
USB Gadget driver") and neither GCC nor Clang emit any reference to the
variable in the final assembly. The only reason GCC doesn't warn about
this variable being unused is the sizeof function.

Reported-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: Remove unnecessary parentheses and dead commented code

Clang warns when multiple pairs of parentheses are used for a single
conditional statement.

drivers/staging/rtl8723bs/hal/rtl8723b_hal_init.c:3351:20: warning:
equality comparison with extraneous parentheses [-Wparentheses-equality]

The commented code is pointless since _HW_STATE_AP_ is handled right
below this block.

Link: https://github.com/ClangBuiltLinux/linux/issues/168
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: mt7621-mmc: Remove #if 0 blocks in dbg.h

This patch removes #if 0 code blocks and usages of
functions defined in the #if 0 blocks in dbg.h.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: mt7621-mmc: Remove #if 0 blocks in dbg.c

This patch removes #if 0 code blocks and usages of
functions defined in the #if 0 blocks in dbg.c

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: mt7621-mmc: Remove #if 0 blocks in sd.c

This patch removes #if 0 code blocks and usages of
functions defined in the #if 0 blocks in sd.c.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtlwifi: Remove unnecessary parentheses

Clang warns when multiple pairs of parentheses are used for a single
conditional statement.

drivers/staging/rtlwifi/phydm/phydm_adc_sampling.c:558:33: warning:
equality comparison with extraneous parentheses [-Wparentheses-equality]
                } else if ((is_enable_la_mode == 1)) {
                            ~~~~~~~~~~~~~~~~~~^~~~
drivers/staging/rtlwifi/phydm/phydm_adc_sampling.c:558:33: note: remove
extraneous parentheses around the comparison to silence this warning
                } else if ((is_enable_la_mode == 1)) {
                           ~                  ^   ~
drivers/staging/rtlwifi/phydm/phydm_adc_sampling.c:558:33: note: use '='
to turn this equality comparison into an assignment
                } else if ((is_enable_la_mode == 1)) {
                                              ^~
                                              =
1 warning generated.

Link: https://github.com/ClangBuiltLinux/linux/issues/172
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: axis-fifo: remove duplicated include from axis-fifo.c

Remove duplicated include.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: media: davinci_vpfe: Use __func__ instead of function name

Access current function name using __func__.
Use %s and __func__ instead of function name.
Use of predefined identifier __func__ prevents typo error in function
name in print calls.

Issue found with checkpatch.pl

Signed-off-by: Mamta Shukla <mamtashukla555@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: vt6655: Remove space after cast

Remove space after cast to fix checkpatch issue.
CHECK: No space is necessary after a cast

Signed-off-by: Mamta Shukla <mamtashukla555@gmail.com>
Reviewed-by: Himanshu Jha <himanshujha199640@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: vt6655: Add spaces around operators

Add spaces around '*' and '-' to fix checkpatch issue.

Signed-off-by: Mamta Shukla <mamtashukla555@gmail.com>
Reviewed-by: Himanshu Jha <himanshujha199640@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: vt6655: Add blank line after function/struct/union/enum declarations

Add blank line after function/struct/union/enum declarations to fix
checkpatch issue.
CHECK: Please use a blank line after function/struct/union/enum
declarations

Signed-off-by: Mamta Shukla <mamtashukla555@gmail.com>
Reviewed-by: Himanshu Jha <himanshujha199640@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: mt7621-pci: Prefer using the BIT macro

Replace all occurrences of (1<<x) with BIT(x).

Signed-off-by: Mamta Shukla <mamtashukla555@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: mt7621-pci: Add spaces around '<<'

Add spaces around '<<' to fix checkpatch issue.
CHECK: spaces preferred around that '<<' (ctx:VxV)

Signed-off-by: Mamta Shukla <mamtashukla555@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: mt7621-pci: Add spaces around '|'

Add spaces around '|' to fix checkpatch issue
CHECK: spaces preferred around that '|' (ctx:VxV)

Signed-off-by: Mamta Shukla <mamtashukla555@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: mt7621-pci: Add spaces around '&'

Add spaces around '&' to fix checkpatch issue.
CHECK: spaces preferred around that '&' (ctx:VxV)

Signed-off-by: Mamta Shukla <mamtashukla555@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: mt7621-pci: Do not initialise statics to 0

Remove initialisation for static global variable to fix checkpatch issue.
ERROR: do not initialise statics to 0

Signed-off-by: Mamta Shukla <mamtashukla555@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: core: Remove true and false comparison

Remove comparison to true and false in if statement.
Issue found with checkpatch.pl.
CHECK: Using comparison to true is error prone
CHECK: Using comparison to false is error prone

Signed-off-by: Mamta Shukla <mamtashukla555@gmail.com>
ACKed-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: sm750fb: Remove space after cast

Remove space after cast to fix checkpatch issue.
CHECK: No space is necessary after a cast

Signed-off-by: Mamta Shukla <mamtashukla555@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: clocking-wizard: match parenthesis indentation

Match parenthesis indentation after line end, and fixed alignment
to conform to the coding style guidelines.
Reported by checkpatch.

Signed-off-by: Ioannis Valasakis <code@wizofe.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: axis-fifo: Remove parentheses in axis-fifo.c

staging: axis-fifo: remove parentheses in axis-fifo.c

Remove parentheses from the end of line and conform to
the coding style guidelines. Reported by checkpatch.

Add an extra space to the function arguments to fix
indentation.

Signed-off-by: Ioannis Valasakis <code@wizofe.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8712: add SPDX identifiers

This satisfies a checkpatch warning and is the preferred
method for notating the license.

The SPDX identifier is a legally binding shorthand, which
can be used instead of the full boiler plate text.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: fbtft: Prefer using the BIT macro

Replacing all occurrences of (1<<x) with BIT(x) to fix checkpatch issue.
CHECK:Prefer using the BIT macro

Signed-off-by: Mamta Shukla <mamtashukla555@gmail.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: fix spelling mistake in comment

Fix a spelling mistake reported by checkpatch.
Caculate -> Calculate

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: remove braces from single if statement

Remove braces from single line if statement.
Reported by checkpatch.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: remove unnecessary parentheses in odm_rtl8188e.c

Remove unnecessary parentheses in odm_rtl8188e.c.
Reported by checkpatch.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: add spaces around '+' in fw.c

Add spaces around '+' in fw.c to follow kernel coding style.
Reported by checkpatch.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: simplify block comment in pwrseq.c

Simplify block comment to a single line to clear a checkpatch warning.
WARNING: Block comments use * on subsequent lines

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: correct block comment in bb_cfg.c

Correct block comment to clear a checkpatch warning.
WARNING: Block comments should align the * on each line

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: rename odm_SignalScaleMapping()

Rename odm_SignalScaleMapping to avoid CamelCase.
odm_SignalScaleMapping -> odm_signal_scale_mapping

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: rename variable in odm_SignalScaleMapping()

Rename variable in odm_SignalScaleMapping() to avoid CamelCase.
RetSig -> retsig

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: rename parameter of odm_SignalScaleMapping()

Rename parameter of odm_SignalScaleMapping() to avoid CamelCase.
CurrSig -> currsig

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: rename odm_EVMdbToPercentage()

Rename odm_EVMdbToPercentage() to avoid CamelCase.
odm_EVMdbToPercentage -> odm_evm_db_to_percentage

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: rename parameter of odm_EVMdbToPercentage()

Rename parameter of odm_EVMdbToPercentage() to avoid CamelCase.
Value -> value

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: rename odm_QueryRxPwrPercentage()

Rename odm_QueryRxPwrPercentage() to avoid CamelCase.
odm_QueryRxPwrPercentage -> odm_query_rxpwrpercentage

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: rename parameter of odm_QueryRxPwrPercentage()

Rename parameter of odm_QueryRxPwrPercentage() to avoid CamelCase.
AntPower -> antpower

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: replace tabs with spaces in odm_hwconfig.c

Replace tabs with spaces in odm_hwconfig.c where appropriate.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: add spaces around '*' in odm_hwconfig.c

Add spaces around '*' in odm_hwconfig.c to follow kernel coding style.
Reported by checkpatch.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: add spaces around '+' in odm_hwconfig.c

Add spaces around '+' in odm_hwconfig.c to follow kernel coding style.
Reported by checkpatch.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: remove wrapper odm_SignalScaleMapping()

The function odm_SignalScaleMapping() is just a wrapper for
odm_SignalScaleMapping_92CSeries().

Rename odm_SignalScaleMapping_92CSeries() to odm_SignalScaleMapping()
and remove the wrapper.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: rename odm_HWConfig

Rename source and header file to avoid CamelCase.
odm_HWConfig.c -> odm_hwconfig.c
odm_HWConfig.h -> odm_hwconfig.h

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: cleanup inconsistent indenting

Cleanup all inconsistent indenting reported by smatch.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: ks7010: Remove unnecessary null check

Remove the unnecessary socket buffer null check in hostif_data_request.
There is already an appropriate null check in the calling function:

(ks_wlan_net.c) ks_wlan_start_xmit

Signed-off-by: Aymen Qader <qader.aymen@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: sm750fb: Remove extra space character

Remove an extra space in ddk750_mode.c to fix indentation

Signed-off-by: Aymen Qader <qader.aymen@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtlwifi: Removed unused define and code efuse_re_pg* from wifi.h

The following:
 bool efuse_re_pg_sec1flag;
 u8 efuse_re_pg_data[8];
are not referenced anywhere in the rtlwifi code.

Signed-off-by: Rick Veens <rickveens92@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: axis-fifo: add error handling of class_create()

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: most: usb: add release function for DCI device

This patch adds the missing release function for the DCI device that frees
the container structure it is embedded in.

Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

MAINTAINERS: removed staging/ft1000 driver

Delete the ft1000 MAINTAINERS entry, concluding the
earlier removal of the driver in commit 6512edec48b2
("staging: ft1000: remove obsolete driver").

Reported-by: Joe Perches <joe@perches.com>
Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtlwifi: Return -ENOMEM instead of -1

Use the ENOMEM constant instead of -1 for kzalloc failure checks in
rtl_halmac.c

Signed-off-by: Aymen Qader <qader.aymen@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: mt7621-mmc: Remove unused single statement macros

This patch removes unused single statement macros in sd.c

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: mt7621-mmc: Remove single statement macro msdc_irq_restore()

This patch removes the macro msdc_irq_restore() and replaces its
usage with call to the function called in the macro definition.
Issue found by checkpatch.

Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: dgnc: delete the driver

Digi does not support it, no one has hardware for it, and no one is
working on it, so let's drop it for now.  If anyone wants to pick it
back up, then can revert this patch.

Reported-by: Lidza Louina <lidza.louina@gmail.com>
Reported-by: Mark Hounschell <markh@compro.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: dgnc: Fix Kconfig help header and text

Replace Kconfig help header and text to match other modules. Issue found
by checkpatch.

Spacing adjusted to match Documentation/process/coding-style.rst. Issue
reported by rdunlap@infradead.org.

Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Sehro Rautenkranz <sehro@sehro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: clean up clang warning on extraneous parentheses

There are extraneous parantheses that are causing clang to produce a
warning so remove these.

Clean up 3 clang warnings:
equality comparison with extraneous parentheses [-Wparentheses-equality]

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8712: Remove unnecessary parentheses

Remove unnecessary parentheses between 'address-of' operators
and struct members.
Issues found with checkpatch.pl

Signed-off-by: Dafna Hirschfeld <dafna3@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: Mark ACPI table declaration as used

Clang emits the following warning:

drivers/staging/rtl8723bs/os_dep/sdio_intf.c:25:36: warning: variable
'acpi_ids' is not needed and will not be emitted
[-Wunneeded-internal-declaration]
static const struct acpi_device_id acpi_ids[] = {
                                   ^
1 warning generated.

Mark acpi_ids with the attribute __used, which makes it clear to Clang
that we don't want this warning while not inhibiting Clang's dead code
elimination from removing the unreferenced internal symbol when moving
the data to the globally available symbol with MODULE_DEVICE_TABLE.

$ nm -S drivers/staging/rtl8723bs/os_dep/sdio_intf.o | grep acpi
0000000000000000 0000000000000040 R __mod_acpi__acpi_ids_device_table

Link: https://github.com/ClangBuiltLinux/linux/issues/169
Suggested-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: mt7621-mmc: replace `printk` with preferred API

Replace calls to `printk` with `dev_info` and `pr_err`
Issues found with checkpatch.pl

Signed-off-by: Dafna Hirschfeld <dafna3@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: mt7621-mmc: Fix comparison to NULL

Replace comparisons of a variable 'x' to NULL with
either 'x' or '!x'.
Issues found with checkpatch.pl

Signed-off-by: Dafna Hirschfeld <dafna3@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: mt7621-mmc: remove unnecessary braces from 'if' statements

Remove unnecessary braces from one line 'if' statements.
Issues found with checkpatch.pl

Signed-off-by: Dafna Hirschfeld <dafna3@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Merge tag 'iio-for-4.20b' of git://git./linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

Second set of IIO new device support features and cleanup for the 4.20 cycle.

One merge commit in here to bring in the SPI_CS_WORD flag patches
that are also going via the SPI tree.

There are a few more fixes than normal for a pull targetting the
next merge window.  These are all long term issues and as we are late
in the cycle, they can wait.

New device support
* ad7606
  - Add support fo the ad7605-4 driver.  This driver is still in staging
    but is heading in the right direction to graduate, motivated partly
    by the requirement for this device support.
* ST VL53L0X ToF ranging sensor
  - New minimal driver. Interrupt support to follow.

New features

* SPI_CS_WORD optimization allows long transfers with the chip select
  toggled every 16bits.   There is a software fallback as well to let
  drivers not care about whether the hardware supports it.

* bh1750
  - Device tree support and bindings.
* ti-ads7950
  - Use the SPI_CS_WORD optmization to save lots of cpu cycles (assuming
    the hardware supports it)

Fixes and cleanups

* ad5064
  - Fix some long incorrect regulator error handling that preventing
    enabling the internal regulator.
* ad7606
  - The ad7606 doesn't actually have a 2.5V range and the values provided
    for scale have always been wrong.  Fix them.
  - Drop some wrong kernel-doc (things that don't exist)
  - Add missing kernel-doc
* at91-adc
  - Fixing missing ack of dataready on sysfs channel reads to avoid spurious
    interrupts.
  - Fix a wrong channel numbers in triggered_buffer_mode
* hmc5843
  - Fix incorrect part number in a comment.
* imx25-gcq
  - Fix a device_node leak in an error path.
* meson-saradc
  - Drop an unused and pointless define.
  - Use of_device_get_match_data instead of opencoding
  - Tidy up how meson_sar_adc_param is accessed.
  - Rework prior to adding some temperature sensor support.

* tag 'iio-for-4.20b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio:
  iio: ad5064: Fix regulator handling
  iio: adc: meson-saradc: use the address attribute from iio_chan_spec
  iio: adc: meson-saradc: do not use meson_sar_adc_iio_channels directly
  iio: adc: at91: fix wrong channel number in triggered buffer mode
  iio: adc: at91: fix acking DRDY irq on simple conversions
  iio: adc: meson-saradc: simplify access to meson_sar_adc_param
  iio: adc: meson-saradc: use of_device_get_match_data
  iio: adc: meson-saradc: remove #define MESON_SAR_ADC_DELTA_10_TS_C_SHIFT
  iio: light: bh1750: Add device tree support
  dt-bindings: iio: light: bh1750: Add device tree binding documentation
  staging:iio:ad7606: Add support for the ad7605-4
  iio: proximity: Add driver support for ST's VL53L0X ToF ranging sensor.
  staging:iio:ad7606: update structs with doc annotations
  iio: magnetometer: hmc5843: Fixed a comment error.
  iio: adc: imx25-gcq: Fix leak of device_node in mx25_gcq_setup_cfgs()
  iio: adc: ti-ads7950: use SPI_CS_WORD to reduce CPU usage
  spi: add software implementation for SPI_CS_WORD
  spi: add new SPI_CS_WORD flag
  staging:iio:ad7606: Remove incorrect kernel doc annotations
  staging:iio:ad7606: fix voltage scales

staging: vboxvideo: Use more drm_fb_helper functions

Store fbhelper and afb struct directly in vbox_private and use
drm_fb_helper_fbdev_setup to replace vbox_fbdev_init, note we cannot use
drm_fb_helper_fbdev_teardown since we use a private framebuffer for the
fbdev.

And replace vbox_driver_lastclose with drm_fb_helper_lastclose.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: vboxvideo: Drop unnecessary drm_connector_helper_funcs callbacks

vbox_mode_valid always returns MODE_OK, which is also the default if no
mode_valid callback is defined.

vbox_best_single_encoder chains to drm_encoder_find, the drm-core will
call drm_encoder_find itself if there is no best_encoder call back.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: vboxvideo: Call drm_atomic_helper_check_plane_state from atomic_check

Extend our planes atomic_check callbacks to be more thorough by calling
the drm_atomic_helper_check_plane_state helper.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: vboxvideo: Replace crtc_helper enable/disable functions

Replace vbox_crtc_commit and vbox_crtc_disable with
vbox_crtc_atomic_[en|dis]able which are the preferred callbacks for
these for atomic drivers.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: vboxvideo: Fix DPMS support after atomic conversion

Atomic modesetting does not use the traditional dpms call backs, instead
we should check crtc_state->active.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>