From: H Hartley Sweeten <hsweeten@visionengravers.com>
Date: Wed, 9 Jan 2013 20:26:26 +0000 (-0700)
Subject: staging: comedi: comedi_buf: factor out new buffer allocation code
X-Git-Tag: v3.9-rc1~127^2~440
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6bd764573179f3f7c165b1ee093aff2d7ad3c59e;p=pandora-kernel.git

staging: comedi: comedi_buf: factor out new buffer allocation code

The function comedi_buf_alloc() first frees any allocated buffer then,
optionally, allocates a new buffer.

Factor out the new buffer allocation code to a new function. This
allows reducing the indent level and makes the code a bit cleaner.

Also, cleanup to factored out code to make it a bit more concise.
Use a local variable for the current comedi_buf_page being allocated.
This cleans up the ugly line breaks used to keep the lines < 80 chars.

Move the #ifdef'ery for the page protection determination out of the
vmap() call.

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