From: H Hartley Sweeten <hsweeten@visionengravers.com>
Date: Thu, 25 Jul 2013 23:10:25 +0000 (-0700)
Subject: staging: comedi: usbdux: simplify initializing the ao urb transfer_buffer
X-Git-Tag: v3.12-rc1~183^2~498
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c769f85e2740ebe7e4c726632fed52818640faba;p=pandora-kernel.git

staging: comedi: usbdux: simplify initializing the ao urb transfer_buffer

Remove the ugly casting of datap to the ao urb->transfer_buffer. The format
of the data in the buffer is simply.

  [0] = # of channels to update (s->async->cmd.chanlist.len)
  [1] = lsb of value for 1st channel to update
  [2] = msb of value for 1st channel to update
  [3] = 1st channel to update (depvriv->dac_commands[0])

If more than 1 channel is to be updated they are simply added to the buffer:

  [4] = lsb of value for 2st channel to update
  [5] = msb of value for 2st channel to update
  [6] = 1st channel to update (depvriv->dac_commands[1])

etc.

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