From: H Hartley Sweeten <hsweeten@visionengravers.com>
Date: Wed, 9 Jan 2013 20:30:22 +0000 (-0700)
Subject: staging: comedi: comedi_buf: cleanup comedi_buf_read_n_available()
X-Git-Tag: v3.9-rc1~127^2~434
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=43f9137df461f6365f76b46f404fd6775eab7d51;p=pandora-kernel.git

staging: comedi: comedi_buf: cleanup comedi_buf_read_n_available()

For aesthetic reasons, cleanup this function a bit.

Change the (async == NULL) test to simply (!async).

Reword the comment about the need for the smp_rmb()..

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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