From: H Hartley Sweeten <hsweeten@visionengravers.com>
Date: Tue, 14 May 2013 21:33:09 +0000 (-0700)
Subject: staging: comedi: dt9812: cleanup analog in subdevice (*insn_read)
X-Git-Tag: omap-for-v3.11/fixes-for-merge-window~76^2~611
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=83a69f5adb81b3432fb1e58485639c391cc65f17;p=pandora-kernel.git

staging: comedi: dt9812: cleanup analog in subdevice (*insn_read)

For aesthetic reasons, rename the function to help with grepping and
rename some of the local vars.

dt9812_analog_in() can fail. Make sure to check for any failure and
return the errno.

The comedi core expects the (*insn_read) functions to return either
an errno or the number of samples read. Change the final return to
insn->n to make this clearer.

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>
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