The DT2821 series boards do not have programmable analog output ranges.
The range is set, per-channel, with jumpers on the board.

Currently the user has to pass some configuration options when attaching
to the driver in order to set the range for each channel. If they do not
pass the range options they will default to 0. If they pass an invalid
range option they will also default to 0. The 0 range option is bipolar
10V. If the user passes a range option that does not match the hardware
setting it doesn't cause any problems in the driver it just causes the
user space comedilib library to incorrectly convert the hardware values
to physical values.

Make the attach a bit simpler by deprecating these options and providing
a range table with all the valid ranges for the analog outputs. The user
can then select the correct range when they use the comedilib functions.
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>

Most of the boards supported by this driver can do either single-ended or
differential Analog Input but there are a couple that can only do one or
the other. On the boards that can do both the type of input is set with
jumpers on the board.

The 'it->options[4]' passed by the user during the board (*attach) is used
to determine how the Analog Inputs are configured. This is used to set
the subdevice flags and number of channels correctly.

Fix the check of this option so that it only applies when the board can
actually do differential input. Also, default to differential inputs if
that is the only mode the board supports.
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>

For aesthetics, add some whitespace to the Analog Input subdevice init.
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>

For aesthetics, add some whitespace to the Analog Output subdevice init.
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>

This enum is used to index the 'options' values that are passed
by the user attaches to the driver. These options are identified
in the comedi comment block.

For aesthetics, remove the enum and just open code the index values.

Refactor the Analog Input subdevice init so that the it->options[4],
indicating differential inputs, does not have to be checked multiple
times.
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>

For aesthetics, factor the code that initializes the then checks to see
if it is actually a DT2821 series board out of the (*attach).

For clarity, remove the MASK and VAL defines used to check the board and
jsut open code the values.
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>

The comedi core expects the (*insn_read) functions to return 'insn->n'
samples. Fix this function to work like the core expects.

For aesthetics, rename the private data 'ao' member to clarify its
use. Also, remove the unnecessary comment.
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>

The main interrupt handler already has the comedi_subdevice pointer
needed in this function. Pass that subdevice pointer so that it does
not need to be fetched as a local variable.

Tidy up the function a bit.
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>

The main interrupt handler already has the comedi_subdevice pointer
needed in this function. Pass that subdevice pointer so that it does
not need to be fetched as a local variable.

Tidy up the function a bit.
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>

The comedi core sanity checks that the subdevice has a buffer allocated
before allowing an async command to start. The helper functions in comedi_buf
will also sanity check the buffer as a side effect of the 'alloc' helpers
with reading or writing data for the buffer.

Remove the unnecessary sanity checks in the ai/ao dma interrupt handlers.
This will allow the handlers to disable the dma and then fail when they
try to read/write the buffer. Currently dma is left enabled due to the
sanity checks.
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>

For aesthetics, add some whitespace to the Digital I/O subdevice init.
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>

Rename these functions so they have namespace associated with the driver.
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>

This macro is not used in the driver. Remove it.
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>

Convert the '2scomp' flags in the private data into bit-fields to save
a bit of space.
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>

This define is only used in the comedi_request_region() call to specify
the size of the I/O region. Remove it and just open code the value.
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>

This driver requires an IRQ and 2 DMA channels in order to execute async
commands.

Modify the (*attach) so that command support is only hooked up if
DMA is available. This allows removing the extra checks in the
command support functions.
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>

As indicated by checkpatch.pl, "WARNING: Use of volatile is usually
wrong: ...". The variables in the private data that are marked
volatile don't need to be. Remove the volatile.
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>

The (*insn_write) functions are expected to write 'insn->n' samples to the
hardware. Fix this function so it works like the comedi core expects.

The comedi core sanity checks that the samples are within the 'maxdata' range
of the subdevice before calling the (*insn_write) so this function does not
need to mask each sample by 's->maxdata'.

Also, the wrong '*2scomp' flag in the private data was being checked to see
if the sample needs to be munged before being written. Fix this.
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>

This member of the boardinfo is the number of bits in the analog output data.
Convert this member into the subdevice 'maxdata', (1 << board->dabits) - 1,
to avoid needing to do the calculation.

Use the subdevice 'maxdata' in the driver instead of using the boardinfo and
use the comedi_offset_munge() helper to convert the two's complement data to
the offset binary form that the comedi core expects.
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>

This member of the boardinfo is the number of bits in the analog input data.
Convert this member into the subdevice 'maxdata', (1 << board->adbits) - 1,
to avoid needing to do the calculation.

Use the subdevice 'maxdata' in the driver instead of using the boardinfo and
use the comedi_offset_munge() helper to convert the two's complement data to
the offset binary form that the comedi core expects.
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>

All unlisted members in the boardinfo declaraction will default to '0'.
Remove the unnecessary code.
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>

For asethetics, move the boardinfo declaration closer to the struct
definition.
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>

Move some of the functions to remove the need for the forward
declarations.
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>

Introduce an inline helper to return the number of bytes that are
ready to read from the comedi_async buffer. Use the helper in the
comedi drivers that currently do the calculation as part of the
(*poll) operation.

Also, use the helper in comedi_fops where the calculation is used as
part of the subdevice going nonbusy.
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>

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>

This patch removes a test in error handling code by adding a return
path.

The Coccinelle semantic match that found the problem is:

// <smpl>
@@
expression E,E1,E2;
@@

E = alloc_etherdev(...)
... when != E = E1
if (...) { ... free_netdev(E); ... return ...; }
... when != E = E2
(
  if (...)
   {
   ... when != free_netdev(E);
   return dev; }
|
* if (...)
   {
   ... when != free_netdev(E);
   return ...; }
|
register_netdev(E)
)

// </smpl>
Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

A struct member variable is set to the same value more than once

This was found using a static code analysis program called cppcheck.
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Fixed the following error reported by running checkpatch.pl

ERROR: trailing whitespace
Signed-off-by: Chaitanya Hazarey <c@24.io>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Fixed the following warnings issued by checkpatch.pl

WARNING: please, no space before tabs
Signed-off-by: Chaitanya Hazarey <c@24.io>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Fixed some of the following warning generated by checkpatch.pl:

WARNING: Missing a blank line after declarations
Signed-off-by: Chaitanya Hazarey <c@24.io>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This is a patch to the serqt_usb2.c file that fixes three instances
of the following checkpatch.pl warning:
WARNING: else is not generally useful after a break or return
Signed-off-by: Vincent Heuken <me@vincentheuken.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch fixes the following sparse warnings:

drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:46:20: warning: symbol 'the_ksocklnd' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:49:19: warning: symbol 'ksocknal_ip2iface' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:67:15: warning: symbol 'ksocknal_create_route' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:103:1: warning: symbol 'ksocknal_create_peer' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:218:1: warning: symbol 'ksocknal_unlink_peer_locked' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:248:1: warning: symbol 'ksocknal_get_peer_info' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:323:1: warning: symbol 'ksocknal_associate_route_conn_locked' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:368:1: warning: symbol 'ksocknal_add_route_locked' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:409:1: warning: symbol 'ksocknal_del_route_locked' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:511:1: warning: symbol 'ksocknal_del_peer_locked' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:566:1: warning: symbol 'ksocknal_del_peer' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:624:14: warning: symbol 'ksocknal_get_conn_by_idx' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:661:15: warning: symbol 'ksocknal_choose_scheduler_locked' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:685:1: warning: symbol 'ksocknal_local_ipvec' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:713:1: warning: symbol 'ksocknal_match_peerip' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:745:1: warning: symbol 'ksocknal_select_ips' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:847:1: warning: symbol 'ksocknal_create_routes' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:997:1: warning: symbol 'ksocknal_connecting' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:1853:1: warning: symbol 'ksocknal_push_peer' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:1886:1: warning: symbol 'ksocknal_push' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:1935:1: warning: symbol 'ksocknal_add_interface' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:1997:1: warning: symbol 'ksocknal_peer_del_interface_locked' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:2038:1: warning: symbol 'ksocknal_del_interface' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:2213:1: warning: symbol 'ksocknal_free_buffers' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:2256:1: warning: symbol 'ksocknal_base_shutdown' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:2349:1: warning: symbol 'ksocknal_new_incarnation' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:2364:1: warning: symbol 'ksocknal_base_startup' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:2496:1: warning: symbol 'ksocknal_debug_peerhash' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:2603:1: warning: symbol 'ksocknal_enumerate_interfaces' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:2660:1: warning: symbol 'ksocknal_search_new_ipif' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:2702:1: warning: symbol 'ksocknal_start_schedulers' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:2748:1: warning: symbol 'ksocknal_net_start_threads' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:2860:1: warning: symbol 'ksocknal_module_fini' was not declared. Should it be static?
drivers/staging/lustre/lnet/klnds/socklnd/socklnd.c:2866:1: warning: symbol 'ksocknal_module_init' was not declared. Should it be static?
Signed-off-by: James A Shackleford <shack@linux.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Don't run rtw_validate_vendor_specific_ies() on anything but
WLAN_EID_VENDOR_SPECIFIC. In addition use the proper
WLAN_OUI_TYPE_MICROSOFT_* definitions.
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Another case using hard coded offsets counting on the presence of
fixed beacon elements in the IEs array.
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Rewrite rtw_restruct_wmm_ie23a() using cfg80211_find_vendor_ie()
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This also eliminates another round of determine algorithm based on key
length, followed by determine key length based on algorithm.
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

We validate the parameters in cfg80211_rtw_add_key() so no need to do
it all again in rtw_cfg80211_{ap_}set_encryption()
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

struct ieee_parms is obsolete, so stop passing it on.
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>