Commit graph

3197 commits

Author SHA1 Message Date
Al Viro
6131ffaa1f more file_inode() open-coded instances
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-02-27 16:59:05 -05:00
Ian Abbott
951348b377 staging: comedi: vmk80xx: wait for URBs to complete
For Velleman K8055 (aka VM110), `vmk80xx_read_packet()` and
`vmk8055_write_packet()` send an URB asynchronously and do not wait for
it complete.  However, callers of `vmk80xx_read_packet()` are assuming
the contents of the data buffer `devpriv->usb_rx_buf` are valid
immediately after that function returns.

For Velleman K8061 (aka VM140), `vmk80xx_read_packet()` and
`vmk80xx_write_packet()` punt the requests to `vmk80xx_do_bulk_msg()`
which *does* wait for the URBs to complete (albeit with no error
checking!).

Change `vmk80xx_read_packet()` and `vmk80xx_write_packet()` to use
`usb_interrupt_msg()` for the K8055, so the callers of
`vmk80xx_read_packet()` can assume the data buffer contents are valid
(if no error occurred).  Remove all the code for checking for transfers
in progress and busy waiting, as it's no longer needed.  Pretty much all
the callers of `vmk80xx_read_packet()` and `vmk80xx_write_packet()` hold
the same semaphore anyway, and the only caller that doesn't
(`vmk80xx_reset_device()` called during initialization of the device)
doesn't really matter.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-18 10:53:50 -08:00
Kumar Amit Mehta
6b07b30892 staging: comedi: drivers: addi-data: hwdrv_apci3200.c: Add a missing semicolon
fix for missing end-of-statement by adding a semicolon

Signed-off-by: Kumar Amit Mehta <gmate.amit@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-18 10:53:50 -08:00
Peter Huewe
a81875dd7a staging/comedi: Remove if(); statement without effect
Smatch warns about:
staging/comedi/drivers/cb_pcidas64.c:3304 prep_ao_dma() warn: if();

So the check currently does nothing and can be removed, as indicated by
Ian.

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-15 10:20:14 -08:00
Peter Huewe
8289ad0578 staging/comedi: Use && instead of & for logical comparision
sparse complains that:
drivers/staging/comedi/drivers/adl_pci9118.c:813 pci9118_calc_divisors()
warn: maybe use && instead of &

usessh is used as a boolean flag (0 and 1) and is compared to a boolean
value so we should use && here.

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-15 10:20:14 -08:00
Ian Abbott
f06a23c93b staging: comedi: vmk80xx: initialize K8055 outputs to known state
vmk8055_reset_device() is called during initialization of a Velleman
K8055 (aka VM110) to send a reset command to the hardware.  I don't know
what this does, but I know that it doesn't reset the digital outputs as
I've tried it.  Since the hardware does not have any way to query the
current output values and there is only the one command to update all
the analog and digital outputs simultaneously (VMK8055_CMD_WRT_AD), send
this command during initialization to set all the analog and digital
outputs to a known state.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-15 10:17:55 -08:00
Ian Abbott
e8f311a5b6 staging: comedi: vmk80xx: simplify vmk80xx_reset_device()
vmk80xx_reset_device() is called during initialization of a Velleman
K8055 (aka VM110) to send a reset command to the hardware.  The current
function is a bit long-winded and doesn't set the TRANS_OUT_BUSY flag to
prevent re-use of the transmit buffer while the URB is in progress.

Rewrite the function to use vmk80xx_write_packet() to send the command.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-15 10:17:55 -08:00
Ian Abbott
0cbfc8269b staging: comedi: vmk80xx: zero buffers on allocation
Zero out `devpriv->usb_tx_buf` and `devpriv->usb_rx_buf` on allocation.
When sending data to the USB device, this ensures any unused part of the
buffer will not contain random crap.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-15 10:17:55 -08:00
Peter Huewe
fc9ca48eb6 staging/comedi: Fix undefined array subscript
In vmk80xx_do_insn_bits the local variable reg, which is used as an
index to the tx_buf array, can be used uninitialized if
- data[0] == 0
and
- devpriv->model != VMK8061_MODEL
-> we get into the else branch without having reg initialized.

Since the driver usually differentiates between VMK8061_MODEL and
VMK8055_MODEL it's safe to assume that VMK8055_DO_REG was meant as an
initial value.

And to avoid duplication we can move the assignments to the top.

Acked-by: Ian Abbott <abbotti@mev.co.uk>
Acked-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-13 09:33:38 -08:00
Joe Perches
78110bb8dc staging: Remove unnecessary OOM messages
alloc failures already get standardized OOM
messages and a dump_stack.

For the affected mallocs around these OOM messages:

Converted kzallocs with multiplies to kcalloc.
Converted kmallocs with multiplies to kmalloc_array.
Converted a kmalloc/strlen/strncpy to kstrdup.
Moved a spin_lock below a removed OOM message and
removed a now unnecessary spin_unlock.
Neatened alignment and whitespace.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-11 10:10:33 -08:00
Ian Abbott
b12da2e433 staging: comedi: correct error message in comedi_alloc_subdevice_minor()
`comedi_alloc_subdevice_minors()` currently prints a message about
running out of minor numbers board device files if it runs out of minor
device numbers.  Change it to complain about running out of minor device
numbers for subdevice files as these are in a different range, not
shared with those for board device files.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-07 17:17:17 -08:00
Ian Abbott
da7185462e staging: comedi: don't return minor from comedi_alloc_subdevice_minor()
`comedi_alloc_subdevice_minor()` currently returns the allocated minor
device number on success.  This is not really of any interest to the
caller (in fact the return value is not even checked), so just return 0
on success.  If the caller really needs to know the allocated minor
device number it can look in `s->minor`.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-07 17:17:16 -08:00
H Hartley Sweeten
37fa328f06 staging: comedi: ni_daq_dio24: add back missing 'if (ret)'
The 'if (ret)' after calling comedi_pcmcia_enable() was accidentally
removed in:

Commit: 573a964882
staging: comedi: ni_daq_dio24: use comedi_pcmcia_{enable,disable}

Put if back so that dio24_auto_attach() can finish attaching to
the board after enabling the pcmcia device.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-07 13:59:26 -08:00
H Hartley Sweeten
a9d50943b8 staging: comedi: quatech_daqp_cs: fix build error
The kbuild test robot reported a build error in this driver caused by:

commit: a3ac95195b
staging: comedi: comedi_pcmcia: allow drivers to use a custom conf_check()

This commit changed the comedi_pcmcia_enable() function so that it now
takes two arguments. The new argument is an optional (*conf_check)
function that is passed to pcmcia_loop_config().

This driver uses the default (*conf_check) in comedi_pcmcia.c so just
pass a NULL as the second arg.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-02-06 13:39:38 -08:00
H Hartley Sweeten
82e9ee616a staging: comedi: ni_mio_cs: use pcmcia_request_irq()
Use pcmcia_request_irq() instead of request_irq() to request the
shared irq for the PCMCIA device. This allows the PCMCIA core to
clean up the registration in pcmcia_disable_device().

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>
2013-02-05 18:16:19 -08:00
H Hartley Sweeten
5cd8e85262 staging: comedi: ni_mio_cs: use comedi_pcmcia_{enable, disable}
Use the comedi_pcmcia_{enable,disable} helpers to enable/disable
the PCMCIA device.

This driver uses a local (*conf_check) to check the pcmcia_device
configuration.

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>
2013-02-05 18:16:19 -08:00
H Hartley Sweeten
a3ac95195b staging: comedi: comedi_pcmcia: allow drivers to use a custom conf_check()
Allow comedi pcmcia drivers to use a custom conf_check() when calling
comedi_pcmcia_enable() to enable the pcmcia device. If a conf_check()
is not passed the internal comedi_pcmcia_conf_check() will be used.

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>
2013-02-05 18:16:19 -08:00
H Hartley Sweeten
4f60f6b69c staging: comedi: ni_labpc_cs: use comedi_pcmcia_{enable,disable}
Use the comedi_pcmcia_{enable,disable} helpers to enable/disable
the PCMCIA device.

This driver is not an audio device, remove CONF_AUTO_AUDIO from
the link->config_flags.

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>
2013-02-05 18:16:19 -08:00
H Hartley Sweeten
573a964882 staging: comedi: ni_daq_dio24: use comedi_pcmcia_{enable,disable}
Use the comedi_pcmcia_{enable,disable} helpers to enable/disable
the PCMCIA device.

This driver does not use interrupts and is not an audio device, remove
CONF_ENABLE_IRQ and CONF_AUTO_AUDIO from the link->config_flags.

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>
2013-02-05 18:16:19 -08:00
H Hartley Sweeten
66dbc7b1b0 staging: comedi: vmk80xx: rename vmk80xx_attach_common()
In comedi drivers typically *_attach_common() is used as the 'common'
part of the comedi_driver attach code for drivers that support various
bus types (ISA, PCI, etc.). This driver is specific to a USB device.

To avoid confusion when grepping, rename this function to something
more appropriate.

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>
2013-02-05 18:07:13 -08:00
H Hartley Sweeten
6dcbe00df7 staging: comedi: vmk80xx: remove the 'Changelog' comments
git history provides a better Changelog for 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>
2013-02-05 18:07:13 -08:00
H Hartley Sweeten
f45787c687 staging: comedi: vmk80xx: cleanup the comedi_lrange tables
The vmk8055_range table is a duplicate of the comedi core provided
range_unipolar5 table. Use that instead.

For aesthetic reasons, clean up the formating of the vmk8061_range
table.

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>
2013-02-05 18:07:13 -08:00
H Hartley Sweeten
4c56a2b639 staging: comedi: vmk80xx: remove CONFIG_COMEDI_DEBUG code
If CONFIG_COMEDI_DEBUG is defined a macro is enabled to output some
printk(KERN_REBUG ...) messages. These are just added noise. 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>
2013-02-05 18:07:13 -08:00
H Hartley Sweeten
6f25a527ea staging: comedi: vmk80xx: remove unused #define
This define is no longer used by the driver. 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>
2013-02-05 18:07:13 -08:00
H Hartley Sweeten
0f97889c19 staging: comedi: vmk80xx: remove digital input (*insn_read)
The comedi core can use the (*insn_bits) function to emulate the
(*insn_read) function. Remove the unnecessary (*insn_read) 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>
2013-02-05 18:07:12 -08:00
H Hartley Sweeten
a348b72eae staging: comedi: vmk80xx: remove digital output (*insn_write)
The comedi core can use the (*insn_bits) function to emulate the
(*insn_write) function. Remove the unnecessary (*insn_read)
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>
2013-02-05 18:07:12 -08:00
H Hartley Sweeten
03754bdbb1 staging: comedi: vmk80xx: remove digital output (*insn_read)
The comedi core can use the (*insn_bits) function to emulate the
(*insn_read) function.

The digital output (*insn_bits) function properly handles the
VMK8061_MODEL to read the digital output states before returning.

Remove the unnecessary (*insn_read) function. It's also not
necessary to set the SDF_READABLE flag so remove the entire
conditional in the attach.

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>
2013-02-05 18:07:12 -08:00
H Hartley Sweeten
9a23a7481e staging: comedi: vmk80xx: cleanup pwm subdevice init
Change the 'pwm_bits' in the boardinfo to 'pwm_maxdata' so that the
calculation of s->maxdata can be removed. Also, change the type to
match the comedi_subdevice type. For aesthetic reasons, rename the
'pwm_chans' boardinfo and change its type also.

Remove the '0' values in the boardinfo.

Rename the (*insn_read) and (*insn_write) functions for the pwm
subdevice to make grepping easier.

For aesthetic reasons, add some whitespace to the subdevice init.

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>
2013-02-05 18:07:12 -08:00
H Hartley Sweeten
75a45d924d staging: comedi: vmk80xx: cleanup counter subdevice init
Change the 'cnt_bits' in the boardinfo to 'cnt_maxdata' so that the
calculation of s->maxdata can be removed. Also, change the type to
match the comedi_subdevice type. Add a comment about the '0' value
for DEVICE_VMK8061.

The s->maxdata should always be set for the subdevice. Move it out
of the conditional.

Rename the (*insn_read), (*insn_config_, and (*insn_write) functions
for the counter subdevice to make grepping easier.

For aesthetic reasons, add some whitespace to the subdevice init.

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>
2013-02-05 18:07:12 -08:00
H Hartley Sweeten
b639e09608 staging: comedi: vmk80xx: cleanup digital input subdevice init
Remove the SDF_GROUND flag from s->subdev_flags. This flag only has
meaning for analog subdevices.

Add the missing s->range_table for the subdevice.

Rename the (*insn_write), (*insn_bits), and (*insn_read) functions
for the digital input subdevice to make grepping easier.

For aesthetic reasons, add some whitespace to the subdevice init.

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>
2013-02-05 18:07:12 -08:00
H Hartley Sweeten
268e5148aa staging: comedi: vmk80xx: cleanup digital input subdevice init
Change the type for the digital input 'di_chans' boardinfo to match
the comedi_subdevice type it is set to. For aesthetic reasons, rename
the variable also.

Remove the SDF_GROUND flag from s->subdev_flags. This flag only has
meaning for analog subdevices.

Add the missing s->range_table for the subdevice.

Rename the (*insn_read) and (*insn_bits) functions for the digital
input subdevice to make grepping easier.

For aesthetic reasons, add some whitespace to the subdevice init.

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>
2013-02-05 18:07:12 -08:00
H Hartley Sweeten
8b3ec9f155 staging: comedi: vmk80xx: cleanup analog output subdevice init
Change the type for the analog output 'ao_chans' boardinfo to match
the comedi_subdevice type it is set to. For aesthetic reasons, rename
the variable also.

Rename the (*insn_write) and (*insn_read) functions for the analog
output subdevice to make grepping easier.

For aesthetic reasons, add some whitespace to the subdevice init.

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>
2013-02-05 18:07:11 -08:00
H Hartley Sweeten
658cd3ac2e staging: comedi: vmk80xx: cleanup analog input subdevice init
Change the 'ai_bits' in the boardinfo to 'ai_maxdata' so that the
calculation of s->maxdata can be removed.

Change the types for the analog input boardinfo to match the
comedi_subdevice types they are set to.

Rename the (*insn_read) function for the analog input subdevice from
vmk80xx_ai_rinsn to vmk80xx_ai_insn_read to make grepping easier.

For aesthetic reasons, add some whitespace to the subdevice init.

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>
2013-02-05 18:07:11 -08:00
H Hartley Sweeten
52d895d367 staging: comedi: vmk80xx: remove need for boardinfo in private_data
The only information in the boardinfo that is used outside of the
attach of the driver is the 'model' of the device.

Remove the 'board' pointer from the private data and replace it with
the 'model' enum and just copy that information over during the attach.

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>
2013-02-05 18:07:11 -08:00
H Hartley Sweeten
57cf09aeee staging: comedi: vmk80xx: push usb (*probe) into comedi (*auto_attach)
Make the usb_driver (*probe) simply call comedi_usb_auto_config()
and move all the (*probe) code into the (*auto_attach) function.

This allows getting rid of the static private data array since we
no longer do part of the initialization in the (*probe) and then
finish it in the (*auto_attach). We can simply kzalloc the private
data instead. The comedi core will then handle the kfree of the
data when the driver is detached.

We can also get rid of the static 'glb_mutex' since this mutex was
only used to protect the static private data array.

Change the parameters for a couple of the helper functions used
during the auto attach. Now that the comedi_device is available
we can simply pass that pointer and get the specific pointers
needed by the helper functions from 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>
2013-02-05 18:07:11 -08:00
H Hartley Sweeten
55ab4f641a staging: comedi: comedi_usb: allow comedi usb drivers to pass a 'context'
Allow the comedi usb drivers to pass a 'context' from their (*probe)
functions to the comedi core's comedi_usb_auto_config(). This 'context'
is then passed to comedi_auto_config() and then to the comedi_driver's
(*auto_attach).

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>
2013-02-05 18:07:11 -08:00
H Hartley Sweeten
29d6dd3310 staging: comedi: vmk80xx: remove private data 'attached'
The 'attached' flag in the private data is set after the comedi_driver
(*auto_attach) function has completed successfully.

The only places it's checked are in rudimentary_check(), which does
some basic sanity checks before doing any of the subdevice operations,
and vmk80xx_auto_attach(), which is the comedi_driver (*auto_attach)
function.

The (*auto_attach) function can only be called as the result of a
successfull usb_driver (*probe). Part of the probe is to locate a
free slot in the static private data array. All free slots are
initialized to '0' so the 'attached' flag will always be cleared.

Remove the unneccessary 'attached' flag in the private data.

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>
2013-02-05 18:07:11 -08:00
H Hartley Sweeten
b105ad8a78 staging: comedi: vmk80xx: remove private data 'probed'
The 'probed' variable is used in the usb driver (*probe) to detect an
unused element in the static private data arry. This variable is then
set after the usb driver has completed its (*probe) before calling
comedi_usb_auto_config(). When the comedi core does the auto config
it will call the (*auto_attach) function, vmk80xx_auto_attach(), which
then locates the correct private data in the static array by checking
to see if it has been 'probed' and that the 'intf' variable matches
the usb_interface pointer for the usb device.

Now that the private data is clean after failed usb probes and disconnects
we don't have to worry about have a garbage 'intf' value in the private
data that might match.

Remove the 'probed' flag from the private data and just use the 'intf'
pointer to detect the match.

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>
2013-02-05 18:07:11 -08:00
H Hartley Sweeten
db7dabf707 staging: comedi: vmk80xx: make sure private data is clean when detached
Currently the private data used in this driver is stored in a static
array. During the usb (*probe) and empty location is found in this
array for use by the usb device. Some initialization of the private
data is then done before comedi_usb_auto_config() is called to allow
the comedi core to attach its comedi_device to the usb device.

The (*probe) can fail for various reasons. If it does, make sure that
the private data is clean before returning an error.

The usb (*disconnect) simply calls comedi_usb_auto_unconfig() to
allow the comedi core to disconnect its comedi_device from the usb
device. Since the private data points to the static array it cannot
be kfree'ed during the detach. Instead make sure it clean before
leaving the detach.

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>
2013-02-05 18:07:10 -08:00
H Hartley Sweeten
1cc8f8854c staging: comedi: vmk80xx: remove private data 'count'
The 'count' in the private data is only used in a couple dev_info()
kernel messages. These messages are just added noise.

Remove the 'count' variable in the private data as well as the
dev_info() 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>
2013-02-05 18:07:10 -08:00
H Hartley Sweeten
78f8fa7f00 staging: comedi: vmk80xx: factor out usb buffer allocation
Factor the code that allocates the usb buffers out of vmk80xx_usb_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>
2013-02-05 18:07:10 -08:00
H Hartley Sweeten
49253d542c staging: comedi: vmk80xx: factor out usb endpoint detection
Factor the code that detects the usb endpoints out of vmk80xx_usb_probe().

Cleanup the detection code in the new 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>
2013-02-05 18:07:10 -08:00
H Hartley Sweeten
da7b18ee8b staging: comedi: vmk80xx: consistently use the same local var names
Rename some of the local variables used in this driver to make the
code easier to maintain and understand.

s/udev/usb	the usb_device that the comedi_driver is attached to
s/dev/devpriv	the private data of the comedi_device
s/cdev/dev	the comedi_device

Also, use some local variables in a couple of the functions to tidy
up the code 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>
2013-02-05 18:07:10 -08:00
H Hartley Sweeten
dc49cbfc67 staging: comedi: vmk80xx: rename struct vmk80xx_usb
The struct vmk80xx_usb is actually the private data for the
comedi_device. For aesthetic reasons, rename the struct to
vmk80xx_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>
2013-02-05 18:07:10 -08:00
H Hartley Sweeten
9f4d4de308 staging: comedi: vmk80xx: remove VMK80XX_SUBD_* enum
These enum values are only used in the initialization of the
comedi_subdevices. They don't help make the code any clearer
so just 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>
2013-02-05 18:07:10 -08:00
H Hartley Sweeten
70ba1a5993 staging: comedi: vmk80xx: remove common and unused boardinfo
Some of the information in the boardinfo is common for both boards
supported by this driver. Remove that information from the boardinfo
and just initialize the subdevice values directly.

Also, remove any information in the boardinfo that is not used 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>
2013-02-05 18:07:09 -08:00
H Hartley Sweeten
0dd772bf76 staging: comedi: vmk80xx: save the boardinfo in the comedi_device
Save a copy of the boardinfo pointer in the comedi_device 'board_ptr'.
The subdevice functions can then simply get it using the comedi_board()
helper.

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>
2013-02-05 18:07:09 -08:00
H Hartley Sweeten
20d6007755 staging: comedi: vmk80xx: move boardinfo into a const array
The normal way of presenting the board specific information in comedi
drivers is store the data in a static const array. This data is then
accessed using a pointer, normally the comedi_device 'board_ptr',

Move the boardinfo for the two boards supported by this driver from
the vmk80xx_usb_probe() function into a static const array.

Change the access of this information so a pointer is used.

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>
2013-02-05 18:07:09 -08:00
H Hartley Sweeten
ce87422743 staging: comedi: vmk80xx: use comedi_auto_unconfig() for (*disconnect)
The usb_driver (*disconnect) in this driver is simply a wrapper around
comedi_auto_unconfig(). Just use comedi_auto_unconfig() 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>
2013-02-05 18:07:09 -08:00
H Hartley Sweeten
9377b9234f staging: comedi: vmk80xx: move usb_driver (*disconnect) code
The usb_driver (*disconnect) in this driver calls the comedi core
comedi_usb_auto_unconfig() which calls the comedi_driver (*detach).

Move the code in the (*disconnect) to the (*detach) to get all the
disconnect/detach in one place.

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>
2013-02-05 18:07:09 -08:00