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

Remove the local variables 'j' and 'ret'. They are not used and the
function always returns '0'.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

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

For aesthetic reasons, rename the local variable 'tmp' to 'ret' as
this is more common for checking errno values.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

A dev_err() message is output if send_dux_commands() fails. Remove
the extra dev_err() messages output by the callers.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

For aesthetic reasons, rename this variable to 'duxbuf' and also
rename the define used for its size.

This helps fix some of the > 80 char lines reported by checkpatch.pl.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

For aesthetic reasons, rename this variable to 'inbuf' to match the
define used for its size (SIZEINBUF).
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This buffer space is kmalloc'ed and free'ed but never used. Just
remove it.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Rename the CamelCase variable 'urbIn' in the private data to
simply 'urb'.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The usb_device pointer can be fetched when needed from the comedi_device
by using comedi_to_usb_interface() then interface_to_usbdev().

Do that instead and remove the pointer from the private data.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The usb_interface pointer is already saved in the comedi_device
by the comedi core.

Remove the pointer from the private data and use comedi_to_usb_interface()
to get the usb_interface when needed.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

For consistency in the driver, change all the dev_{level} messages
so they use dev->class_dev for the device.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Now that the comedi_device is passed to the internal functions, the
back pointer to it is not needed in the private data. Remove it.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Instead of passing the private data to the internal functions, pass
the comedi_device pointer and get the private data from it.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The interface number is only needed during the attach of the
device. Remove it from the private data.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The subdevice function pointers are only setup if the device is
attached. The 'attached' flag in the private data is unnecessary.
Remove it.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The 'probed' flag in the private data was used to handle the
disconnect between the usb (*probe) and the comedi_driver
(*auto_attach) so that if the comedi_driver was attached without
an associated usb_device the subdevice functions would return
-ENODEV.

Now that the usb_driver (*probe) is part of the comedi_driver
(*auto_attach), the comedi_driver can only attach if the usb
device is present.

Remove the unnecessary variable from the private data and its
uses in the driver.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Now that the usb (*probe) is handled in the comedi_driver (*auto_attach)
the comedi_driver (*detach) will be called automatically if the
attach fails.

The tidy_up() calls in the (*auto_attach) are not needed. Remove them
and absorb the code in tidy_up() into the (*detach).
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Now that the private data is kzalloc'ed when the device is attached,
the NUMUSBDUXFAST define is not used. Remove it.

The SUBDEV_AD define is only used when setting up the subdevice.
Remove it and just open-code the value.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Currently, the usb_driver (*probe) locates a free place in the static
usbduxfast array to use for the private data in this driver. It then
does some initial setup of the usb device and allocates the buffers
needed. The firmware for the device is then requested and uploaded
before calling comedi_usb_auto_config() to allow the comedi core to
complete the (*auto_attach) of the device.

Move the bulk of the (*probe) into the comedi_driver (*auto_attach).
This allows the private data to be kzalloc'ed. We can then remove the
static array along with the semaphore that protected it.

This also removes the 16 attached devices limitation.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The usb_driver (*disconnect) calls comedi_usb_auto_unconfig() then
frees any allocations by calling tidy_up(). comedi_usb_auto_unconfig()
calls the comedi_driver (*detach) function, usbduxfast_detach().

Move the tidy_up() call into usbduxfast_detach() and use the
comedi_usb_auto_unconfig() directly for the (*disconnect).
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Rename the CamelCase function,

Rename some of the local variables to the normal names used in
comedi drivers. Add a local variable for the comedi_async *.

Remove the sanity checking. The urb that causes this function to
be called can only be submitted if the sanity checks already
passed.

Change the way the comedi_subdevice is fetched. The attach function
sets the dev->read_subev pointer to the correct subdevice. Use that
instead of accessing the dev->subdevices array directly.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

These messages are just function trace noise. Remove them.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Remove the unnecessary comments and tidy up the whitespace in
this function.

Also, remove the dev_info() at the end. It's just added noise.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The struct usb_driver does not have an 'owner' field. Remove the
code in this driver that initializes it.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

For aesthetic reasons, globally rename the variables used for the
struct usbduxfastsub_s * in this driver to 'devpriv'. This variable
pointes to the comedi_device private data.

Also, rename the struct to 'usbduxfast_private' to make its use
a bit clearer.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

For aesthetic reasons, globally rename the variables used for the
struct usb_device * in this driver to simply 'usb'.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

For aesthetic reasons, globally rename the variables used for the
struct usb_interface * in this driver to simply 'intf'.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Add a local variable to hold the pointer to the place in the
usbduxfast array the is being configured for the device.
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The COMEDI_DEBUG noise in the usb (*probe) is just added function
trace noise. Remove it along with the final dev_info().
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Change the request_firmware_nowait() to a request_firmware() so
that the usb_driver (*probe) and continue with the comedi_driver
(*auto_attach).
Signed-off-by: NH Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The function return type is a pointer. Hence return NULL instead
of 0.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Acked-by: NSamuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

'cp' is a pointer. Fix the incorrect comparison with integer to
avoid the below warning:
drivers/staging/speakup/varhandlers.c:283:19: warning:
Using plain integer as NULL pointer
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Acked-by: NSamuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The function returns a pointer. Hence return NULL instead of 0.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Acked-by: NSamuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: NWilliam Hubbs <w.d.hubbs@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: NWilliam Hubbs <w.d.hubbs@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: NWilliam Hubbs <w.d.hubbs@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: NWilliam Hubbs <w.d.hubbs@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: NWilliam Hubbs <w.d.hubbs@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: NWilliam Hubbs <w.d.hubbs@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: NWilliam Hubbs <w.d.hubbs@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: NWilliam Hubbs <w.d.hubbs@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>