From: H Hartley Sweeten <hsweeten@visionengravers.com>
Date: Tue, 4 Nov 2014 17:54:11 +0000 (-0700)
Subject: staging: comedi: addi_apci_3120: introduce apci3120_ai_reset_fifo()
X-Git-Tag: omap-for-v3.19/fixes-rc1~73^2~328
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d0bb66aa082c23741e85df459f7444f86cd86792;p=pandora-kernel.git

staging: comedi: addi_apci_3120: introduce apci3120_ai_reset_fifo()

A dummy read of APCI3120_TIMER_MODE_REG resets the analog input FIFO. Introduce
a helper function to clarify this.

It's not necessary to do a dummy read of the FIFO (base + 0) before reseting it.
Remove the unnecessary dummy reads.

The APCI3120_TIMER_MODE_REG is a 16-bit register. This fixes a couple 8-bit reads.

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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