From: H Hartley Sweeten <hsweeten@visionengravers.com>
Date: Mon, 9 Dec 2013 22:31:03 +0000 (-0700)
Subject: staging: comedi: pcmmio: simplify pcmmio_stop_intr()
X-Git-Tag: v3.14-rc1~150^2~315
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=29947fd6310292ce81d1ea4e0b56978a4a921b19;p=pandora-kernel.git

staging: comedi: pcmmio: simplify pcmmio_stop_intr()

This function is only called by the interrupt subdevice so the sanity
check of the 'asic' is not necessary. Remove it.

The 'nports' is always 3 and the 'firstport' is always 0. Remove the
for () loop that clears the registers to disable the interrupts and
just use the pcmmio_dio_write() helper to write to the three page
registers.

This also fixes a bug where the write to the page registers is not
protected with the spinlock.

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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