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The comedi code came into the kernel back in 2008, but traces its
lifetime to much much earlier. It's been polished and buffed and
there's really nothing preventing it from being part of the "real"
portion of the kernel.
So move it to drivers/comedi/ as it belongs there.
Many thanks to the hundreds of developers who did the work to make this
happen.
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: H Hartley Sweeten <hsweeten@visionengravers.com>
Link: https://lore.kernel.org/r/YHauop4u3sP6lz8j@kroah.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fixed various different checkpatch duplicate word warnings, the TODO
file said to fix checkpatch warnings.
Signed-off-by: Ethan Edwards <ethancarteredwards@gmail.com>
Link: https://lore.kernel.org/r/20200825002955.e3wvtwsoqqbc2cvl@archlaptop.localdomain
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Uses a single macro to define multiple macros that represent a series of
terminals for NI devices. This patch also redefines NI_MAX_COUNTERS as the
maximum number of counters possible on NI devices (instead of the maximum
index of the counters). This was a little confusing and caused a bug in
commit 347e244884c3b ("staging: comedi: tio: implement global tio/ctr routing")
when setting/reading registers for counter terminals.
Fixes: 347e244884c3b ("staging: comedi: tio: implement global tio/ctr routing")
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>
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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>
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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>
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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>
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Fixed SPDX-License-Identifier comment on first line
Signed-off-by: ankit patel <ankit.mayurbhai.patel@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Now that the SPDX tag is in all comedi files, that identifies the
license in a specific and legally-defined manner. So the extra GPL text
wording can be removed as it is no longer needed at all.
This is done on a quest to remove the 700+ different ways that files in
the kernel describe the GPL license text. And there's unneeded stuff
like the address (sometimes incorrect) for the FSF which is never
needed.
No copyright headers or other non-license-description text was removed.
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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It's good to have SPDX identifiers in all files to make it easier to
audit the kernel tree for correct licenses.
Update the drivers/staging/comedi files files with the correct SPDX
license identifier based on the license text in the file itself. The
SPDX identifier is a legally binding shorthand, which can be used
instead of the full boiler plate text.
This work is based on a script and data from Thomas Gleixner, Philippe
Ombredanne, and Kate Stewart.
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This makes INSN_CONFIG_DIO_{INPUT,OUTPUT,OPENDRAIN} simply be copies of the
already-existing constants COMEDI_INPUT, COMEDI_OUTPUT, and
COMEDI_OPENDRAIN.
This change also ensures that if a user happens to use, for example,
COMEDI_INPUT in place of where INSN_CONFIG_DIO_INPUT, the result will
always be the same and also acceptable and correct usage.
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>
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Information pertaining to the NI_GPCT_ARM* registers were added to the
comedi.org version of the comedi kernel. This adds this information to
the staging-tree version of the comedi kernel. Relevant comments are also
copied over.
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>
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This patch fixed the checkpatch.pl warning:
WARNING: Prefer 'unsigned int' to bare use of 'unsigned'
Signed-off-by: Nikita Eshkeev <kastolom@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The kernel-doc comment for `struct comedi_krange` refers to the macro
constant `RF_external`. It should be `RF_EXTERNAL`, so fix it. It also
documents the value of the constant as `(1 << 8)`, but the macro now
expands to the hexadecimal constant `0x100`, so use that as the
documented value.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The "comedi.h" file is part of the user API for COMEDI devices, and is
intended to be migrated to "include/uapi/linux". The `BIT` macro from
"include/linux/bitops.h" should not be used there.
Replace the use of the `BIT` macro with hexadecimal constants of the
same value. The `BIT` macro replaced expressions of the form `(1 << N)`
in this file originally, but reverting back to that form would encourage
patches changing them back to use the `BIT` macro.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Replace all instances of bit shifting on 1 with the BIT(x) macro. In
addition, convert other non-1 shift operations with the equivalent
BIT(x) macro for uniformity. Issue pointed out by checkpatch.
CHECK: Prefer using the BIT macro
Signed-off-by: Aybuke Ozdemir <aybuke.147@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The macros `SDF_MODE0`, `SDF_MODE1`, `SDF_MODE2`, `SDF_MODE3`, and
`SDF_MODE4` are COMEDI subdevice flags originally associated with the
obsolete (and no longer present) COMEDI "trigger" functionality. They
have been of no use since COMEDI release 0.7.61 back in November 2001.
Since they were going spare, a couple of them have been aliased as
`SDF_PWM_COUNTER` and `SDF_PWM_HBRIDGE` to mean other things. Remove
the obsolete macros and redefine `SDF_PWM_COUNTER` and `SDF_PWM_HBRIDGE`
as equivalent numeric values.
Some code distributed with the userspace COMEDILIB library uses the
`SDF_MODE0` etc. flags to display the fact that they are set, but
COMEDILIB uses and installs its own, compatible version of "comedi.h"
anyway so isn't affected by their removal from the kernel copy.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Remove `struct comedi_trig` and some associated macros, `TRIG_DITHER`,
`TRIG_DEGLITCH`, `TRIG_CONFIG`, and ioctl code `COMEDI_TRIG`. These
have been obsolete since COMEDI release 0.7.61 back in November 2001.
The userspace COMEDILIB library still has some deprecated code that
may attempt to use these, but it uses its own, compatible version of
"comedi.h", so isn't affected by their removal from the kernel copy.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Add "kernel-doc"-formatted comments to the COMEDI `struct` declarations
used with ioctls. Don't bother documenting `struct comedi_trig` as it
is obsolete and not supported.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Add "kernel-doc"-formatted comments to COMEDI's general-purpose `enum`
type declarations. Don't bother documenting the low-level
driver-specific ones for now.
Move the declaration of `enum comedi_counter_status_flags` next to the
other general-purpose `enum` types.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The wording at the start of the header comment is a bit misleading,
particularly the part in parentheses: "(installed as
/usr/include/comedi.h)". This version of "comedi.h" certainly won't be
installed as that pathname. Fix it.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This patch removes unnecessary typecast of c90 int constant.
Signed-off-by: Pablo G. Gallardo <pggllrd@gmail.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fixed multiple comment blocks that didn't comply with the
kernels coding style, and fixed a few spacing issues as well.
Signed-off-by: Daniel H. Hemmingsen <dhh.kernel@gmail.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fixed a spelling error in a comment.
Signed-off-by: Colin Cronin <colinpatrickcronin@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Now that Comedi has the structures in place to support setting the
current "read" and/or "write" subdevice on a per-file object basis, add
new ioctls to set them. The newly chosen "read" ("write") subdevice
needs to support "read" ("write") commands, and the file cannot be busy
handling a "read" ("write") command on the previous subdevice (if any).
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The COMEDI_CB_* defines are the comedi_async "events" that the drivers set
to let the core detect the state of running async commands. These "events"
are only relevant to the kernel modules and should not be exposed to
userspace in the comedi.h user API header.
Move the defines to comedidev.h to avoid exposing them. For aesthetics,
convert the defines to bit shifts to better indicate that they are bitmask
values. Cleanup the documentation.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The `TRIG_ROUND_...` macros are some of the values that can be OR-ed
into the `flags` member of `struct comedi_cmd`. They may influence the
rounding of sample timings during operation of the asynchronous command.
The names are a bit of a left-over from earlier times. It would be
better to use the names `CMDF_ROUND_...` to match various other command
flags.
Define `CMDF_ROUND_MASK`, `CMDF_ROUND_NEAREST`, `CMDF_ROUND_DOWN`,
`CMDF_ROUND_UP` and `CMDF_ROUND_UP_NEXT` with the same numeric values as
`TRIG_ROUND_MASK`, `TRIG_ROUND_NEAREST`, `TRIG_ROUND_DOWN`,
`TRIG_ROUND_UP` and `TRIG_ROUND_UP_NEXT`, and redefine the
`TRIG_ROUND_...` macros as synonyms of the `CMDF_ROUND_...` macros.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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`TRIG_BOGUS` is one of the values that can be OR-ed into the `flags`
member of `struct comedi_cmd`. It causes the comedi core to go through
some of the motions of setting up an asynchronous command without
actually setting it up. If all goes well, it causes the command set-up
to fail with an `EAGAIN` error.
The name `TRIG_BOGUS` is a bit of a left-over from earlier times. A
better name would be `CMDF_BOGUS` to match various other command flags.
Define `CMDF_BOGUS` with the same numeric value as the old `TRIG_BOGUS`
and redefine `TRIG_BOGUS` as a synonym of it.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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`TRIG_WAKE_EOS` is one of the values that can be OR-ed into the `flags`
member of `struct comedi_cmd`. It's intended action is tune the
asynchronous command to interrupt at the end of every "scan". The name
is a bit of a left-over from earlier times. A better name would be
`CMDF_WAKE_EOS` to match various other command flags.
Define `CMDF_WAKE_EOS` with the same numeric value as the old
`TRIG_WAKE_EOS` and redefine `TRIG_WAKE_EOS` as a synonym of it.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix the checkpatch.pl --strict issues:
CHECK: Please use a blank line after function/struct/union/enum declarations
For aesthetics, convert the inline functions into simple macros.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Signed-off-by: Kinka Huang <kinkabrain@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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As pointed out by Ian Abbott, the INSN_CONFIG_SET_CLOCK_SRC options should
be exposed in the user header comedi.h.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Addresses change...
Remove the paragraph with the FSF address from all the comedi source
files.
Also, remove the paragraph about the finding the complete GPL in the
COPYING file since it's unnecessary.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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All the comedi drivers have been converted to use the request_firmware()
hotplug interface. The COMEDI_DEVCONFIG ioctl support for passing the
firmware blob as 'aux_data' is no longer required.
Remove the feature and give the user a dev_warn message if it is
attempted.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The 'addi_apci_1032' driver recently started supporting the
`INSN_CONFIG_DIGITAL_TRIG` configuration instruction, but as no other
drivers were using it before, there was no existing practice of how the
instruction should look.
Define the format to be something a bit more configurable. In
particular, a subdevice might have more than one trigger requiring an ID
and/or `COMEDI_EV_...` flags to disambiguate them, a trigger might have
more than 32 inputs, and a trigger might need several
`INSN_CONFIG_DIGITAL_TRIG` configuration instructions to configure
completely (if there are more than 32 inputs or if it uses a combination
of edge-triggered and level-triggered inputs).
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Add clock source constants for the timer subdevice of the PCIe cards
supported by the "amplc_dio200" driver.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Add constants to "comedi.h" for the extra clock and gate sources
allowed by the new PCIe cards supported by the "amplc_dio200" driver.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The 'chanlist' is passed to the kernel from user space with the
COMEDI_CMD and COMEDI_CMDTEST ioctls. The do_cmd_ioctl() and
do_cmdtest_ioctl() functions in comedi_fops.c copy this data
to/from user space to kernel space correctly.
Unfortunately, this data is copied back into a struct comedi_cmd
so when the cmd is passed down to the drivers they still see the
pointer as __user data. This results is a number of sparse errors
such as:
warning: dereference of noderef expression
warning: incorrect type in argument 2 (different address spaces)
expected void const *<noident>
got unsigned int [noderef] <asn:1>*chanlist
warning: incorrect type in argument 3 (different address spaces)
expected unsigned int *chanlist
got unsigned int [noderef] <asn:1>*chanlist
warning: incorrect type in assignment (different address spaces)
expected unsigned int *ai_chanlist
got unsigned int [noderef] <asn:1>*chanlist
The two functions in comedi_fops are the only ones that need the
__user tag. Remove the tag so that all the drivers see the chanlist
pointer in the correct address space.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Acked-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The extra indents in this file cause git diff to not know the
section where changes are being made. This results in diff outputs
like:
@@ -365,7 +365,10 @@
instead of the more informational:
@@ -365,6 +365,7 @@ struct comedi_cmd {
Remove all the extra indents.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Acked-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Update comments in comedi.h accordingly.
Signed-off-by: W. Trevor King <wking@drexel.edu>
Acked-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fixed a declaration coding style issue.
Signed-off-by: Ralf Thielow <ralf.thielow@googlemail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patches fixes some long line lengths in comedi.h from checkpatch.pl
Signed-off-by: Mark Rankilor <reodge@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patches fixes long line lengths in comedi.h that were picked up by
checkpatch.pl
Signed-off-by: Mark Rankilor <reodge@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patch fixes quite a few long line lengths in comedi.h as reported by
checkpatch.pl
Signed-off-by: Mark Rankilor <reodge@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This patches fixes some of the long line lengths that checkpatch.pl was
complaining about in comedi.h
Signed-off-by: Mark Rankilor <reodge@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This is really a userspace pointer, so mark it as such.
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Hm, what a mess. I tried to properly mark up the __user pointers,
but for some of these structures, we use them both in the kernel,
and across the user/kernel boundry, which isn't ok. So we end
up generating a few new sparse warnings in places we were not before,
but the large majority of things are now properly tagged in the fops
file.
The whole ioctl interface needs to be carefully looked at in the future.
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This is the start of cleaning up the user pointer markings
in the comedi core.
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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This is a patch to the comedi.h files that fixes up errors found by the
checkpatch.pl tool
Signed-off-by: Gorskin Ilya <revent82@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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The flag COMEDI_CB_BLOCK was marked as "depricated in the header file".
However, this flag is important to wake up the data-reader (and writer)
after new data has arrived from(for) the DAQ card.
Signed-off-by: Bernd Porr <berndporr@f2s.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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c++ isn't supported in the kernel.
Signed-off-by: Shawn Bohrer <shawn.bohrer@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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