staging: comedi: remove hardware_device from struct comedi_device_info
authorIan Abbott <abbotti@mev.co.uk>
Thu, 4 Apr 2013 13:59:06 +0000 (14:59 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 5 Apr 2013 21:33:20 +0000 (14:33 -0700)
commit0918e595ae45d99e0bd8a9950a0f0cb0e2a9c948
treed85248832d8edc9b2a77e9dea4f400792c2ed945
parentea1cc3973a6f3832956d99f74b20970a4e71bd37
staging: comedi: remove hardware_device from struct comedi_device_info

The `hardware_device` member of `struct comedi_device_info` is only set
to point to a hardware device by the auto-configuration code (specifically
`comedi_alloc_board_minor() with a non-NULL `hardware_device` parameter)
so that it can be found again by the auto-unconfiguration code
(specifically `comedi_release_hardware_device()`).  However, as
`info->device->hw_dev` (where `info` is a pointer to the `struct
comedi_device_info`) is set to the same value as `info->hardware_device`
(by calling `comedi_set_hw_dev()` with the same hardware device pointer)
we can look for that instead, so there is no need for the
`hardware_device` member any more.  Get rid 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>
drivers/staging/comedi/comedi_fops.c