Comedi drivers do not need to cleanup allocations during the
(*auto_attach). If the (*auto_attach) fails the (*detach) will
automatically be called to handle the cleanup.
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>

Rename the function so it has namespace associated with the driver.

Move the function closer to its only caller and tidy it up a bit.
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>

Rename the local variable used for the comedi_device private data.

Remove all the unnecessary comments and add some whitespace to the
subdevice init.

Use dev->class_dev for the dev_{level} messages.
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>

The SUBDEV_* defines are only used during the (*auto_attach). Remove
the defines and just open code the values.
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>

The comedi core verifies that the command chanlist_len is valid for
the subdevice based on the len_chanlist that was setup during the
attach. There is no need to recheck it in the (*cmd) function.
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>

The comedi core verifies that the command chanlist_len is valid for
the subdevice based on the len_chanlist that was setup during the
attach. There is no need to recheck it in the (*cmd) function.
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>

Rename the function so it has namespace associated with the driver.
Rename the local variable used for the private data pointer.

Remove the dev_err() messages, they are just added noise.
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>

Rename the function so it has namespace associated with the driver.

Rename the local variable used for the private data pointer.

Remove the dev_err() messages, they are just added noise.

Refactor the code to remove the goto.
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>

The comedi functions in this driver can only be called if the
(*auto_attach) successfull kzalloc'ed the private data and set
dev->private. The extra sanity checks are not needed. Remove them.
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>

Use dev->class_dev for all dev_{level} messages.

Remove the unnecessary error message for a kmemdup() failure.
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>

This back pointer to the usb_device is not needed in the private data.
Remove it.
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>

This back pointer to the comedi_device is not needed in the private
data. Remove it.
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>

Rename the CamelCase function.

Pass the comedi_device pointer instead of the private data pointer
to the function.

Use a couple local variables to tidy up the function.

Remove the dev_err() message when usb_submit_urb() fails, its just
added noise.
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>

Rename the variable used for the private data pointer.

Remove dev_err() when usb_blk_msg() fails, it's just added noise.
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>

Rename the variable used for the private data pointer.

Remove dev_err() when usb_blk_msg() fails, it's just added noise.
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>

This define enables a bunch of printk debug in send_dux_commands().
This is just noise used for development debuging. Remove it.
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>

The usb_driver (*probe) already calls comedi_usb_auto_config(), which
will call the comedi_driver (*auto_attach). Move the bulk of the (*probe)
to the (*auto_attach).

This allows the comedi_device private data to be kzalloc'ed and the static
array used to pass the private data from the usb_driver to the comedi_driver
can be removed along with the static semaphore that protected it.

We can also drop a couple variables from the private data since they no
longer are used or needed.
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>

The usb_driver (*disconnect) already calls comedi_usb_auto_unconfig(), which
will call the comedi_driver (*detach). Move the other operations in the
(*disconnect) into the (*detach). The comedi_usb_auto_unconfig() can then
be used directly for the (*disconnect).
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>

To make pushing the usb_driver (*probe) into the comedi_driver (*auto_attach)
cleaner, factor the usb buffer allocation out of the (*probe). This also
cleans up the failure paths in the (*probe).
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>

For aesthetic reasons, rename some of the variables to the "norm" used
in comedi drivers.

Use a local variable for the pointer to the private data instead of
accessing the static array directly. Also use a local variable to
setup the urbs.
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>

For aesthetic reasons, rename the struct used for the comedi_device
private data from usbduxsub to usbduxsigma_private.
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>

Rename the local variables to follow the "norm" for comedi drivers.
The comedi_subdevice is not used in this function. Remove that local
variable.

Use dev->class_dev for any dev_{level} messages.

Remove the extra check of 'pwm_cmd_running' before submitting the urb.
This flag was previously checked.
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>

The 'probed' flag in the private data is used by the usb_driver (*probe)
function to find a free entry in the static usbduxsub array to use for
the comedi_device private data. The (*probe) sets this flag before it
hands off the probe to the comedi_driver (*auto_attach). The 'probed'
flag is cleared in tidy_up() are part of the usb_driver (*disconnect),
which calls the comedi_driver (*detach).

The 'probed' flag will always be set if the comedi_driver (*auto_attach)
completes successfully. The extra sanity checks in the comedi functions
are not needed. Remove them.
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>

Generalize a helper function to replace usbduxsub_submit_{In,Out}URBs().

In the callers, set the 'a[io]_cmd_running' flag after the urbs have been
successfully submitted. This removes the need to clear the flag if the
submit fails.
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>

The usbduxsub_submit_{In,Out}URBs() functions have a couple development
debug messages that are just added noise. Remove them.

Also, the sanity check of 'usbduxsub', the comedi_device private data, is
not necessary. The callers have already validated it. Remove the checks.
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>

Rename the local variables to follow the "norm" for comedi drivers.
The comedi_subdevice for this function is the dev->write_subdev that
was initialized during the (*auto_attach), use that instead of
directly accessing the comedi_device subdevices array.

Use dev->class_dev for any dev_{level} messages.

Remove the extra check of 'ao_cmd_running' before submitting the urb.
This flag was previously checked and if the command is aborted due to
an usbdux_ao_stop() before reaching this point the function will exit.
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>

Rename the local variables to follow the "norm" for comedi drivers.
The comedi_subdevice for this function is the dev->read_subdev that
was initialized during the (*auto_attach), use that instead of
directly accessing the comedi_device subdevices array.

Use dev->class_dev for any dev_{level} messages.
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>

This function is only called by usbdux_pwm_stop(). Absorb it.
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>

In tidy_up(), instead of duplicating the code in usbdux_pwm_stop() to
unlink the pwm urb, just use usbdux_pwm_stop(). Since that function calls
usb_kill_urb() and clears the 'pwm_cmd_running' flag, we can also remove
the redundant code in tidy_up().
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>

This function is only called by usbdux_ao_stop(). Absorb it.
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>

In tidy_up(), instead of duplicating the code in usbdux_ao_stop() to unlink
all the output urbs, just use usbdux_ao_stop(). Since that function calls
usb_kill_urb() for all the urbs and clears the 'ao_cmd_running' flag, we
can also remove the redundant code in tidy_up().
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>

This function is only called by usbdux_ai_stop(). Absorb it.
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>

In tidy_up(), instead of duplicating the code in usbdux_ai_stop() to unlink
all the input urbs, just use usbdux_ai_stop(). Since that function calls
usb_kill_urb() for all the urbs and clears the 'ai_cmd_running' flag, we
can also remove the redundant code in tidy_up().
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>

The (*cancel) functions can only be called by the comedi core it the
(*auto_attach) completed successfully. That function sets the comedi_device
'private' variable before initializing the callbacks so the sanity checks
are unnecessary. Remove them.

Also, rename the 'this_usbduxsub' local variable to 'devpriv' as this is
more common in comedi drivers.

Remove the unnecessary comments.
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>

The comedi_device private data variable 'probed' is set after the usb_driver
has completed its (*probe) before calling comedi_usb_auto_config(). That
function calls the comedi_driver (*auto_attach) which will set the
comedi_device 'private' variable and initialize the subdevices.

The subdevice (*cancel) functions can only be called after the (*auto_attach)
has completed successfully so the sanity checks of 'probed' are unnecessary.
Remove them.
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>

The usbdux_pwm_cancel() function is the only caller that does not validate
the comedi_device private data before calling the stop function. Move the
validation test to that function and remove the unnecessary sanity checks.

Since the stop functions always succeed, change the return type to void.
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>

The 'this_usbduxsub' parameter is actually the comedi_device private data,
rename it to 'devpriv' which is more common in comedi drivers.

Remove the unnecessary pr_err() noise in usbdux_ai_stop().
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>

These functions always return success. Change them to just return void.

The 'usbduxsub_tmp', which is actually the comedi_device private data, is
already validated by the callers. Remove the unnecessary validation and
rename the 'usbduxsub_tmp' parameter to 'devpriv' which is more common in
comedi drivers.

Remove the unnecessary comments.
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>

Remove the dev_dbg() messages in all the unlink urb functions. The 'err'
is always 0 (success) so these messages are just added noise.
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>

Remove all the dev_{level} function trace noise in the driver.
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>