staging: comedi: comedi_fops: introduce comedi_dev_from_minor()
authorH Hartley Sweeten <hsweeten@visionengravers.com>
Wed, 19 Dec 2012 22:34:40 +0000 (15:34 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 7 Jan 2013 22:25:46 +0000 (14:25 -0800)
commit85104e9b409013c78624b367dec02e6ccc996635
tree60e4bdb4ecfa319df2a80625a0de7397d196e7fa
parent43bd33f22444868cbc9d4cbec7a3efb0a7c2cb25
staging: comedi: comedi_fops: introduce comedi_dev_from_minor()

A number of functions have to call comedi_get_device_file_info()
to get the comedi_device_file_info pointer for a given minor. That
pointer is only used to get the actual comedi_device pointer for
the minor.

Introduce a new helper function, comedi_dev_from_minor(), to simplify
this operation. This will also allow us to make the comedi_device_file_info
struct 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>
drivers/staging/comedi/comedi_fops.c
drivers/staging/comedi/comedidev.h