From: H Hartley Sweeten <hsweeten@visionengravers.com>
Date: Tue, 9 Apr 2013 23:32:43 +0000 (-0700)
Subject: staging: comedi: unionxx5: refactor subdevice init
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~137^2~112
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dba89b14d44d463c33c3f49384475bd1316fe28a;p=pandora-kernel.git

staging: comedi: unionxx5: refactor subdevice init

Change the parameters passed to __unioxx5_subdev_init(), we need
the comedi_device pointer to call __comedi_request_region() and
the 'minor' is only used in some kernel noise so remove it. Rename
the parameters 'subdev' and 'subdev_iobase' to simply 's' and
'iobase'.

Use __comedi_request_region() to request the I/O region needed by
the subdevice. Remove the attach noise as well as the error message
when the request_region() fails, comedi_request_reqion() will output
the error message if necessary.

Return -ENOMEM is the kzalloc fails instead of -1.

Fix unioxx5_attach() to use the new parameters to __unioxx5_subdev_init().
Pass on any error codes instead of -1.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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