From 55901d15b6f816af5bff9efd55b6400121dbc04a Mon Sep 17 00:00:00 2001
From: Ian Abbott <abbotti@mev.co.uk>
Date: Mon, 28 Jul 2014 13:09:33 +0100
Subject: [PATCH] staging: comedi: amplc_pc236: add callback to check and clear
 interrupt

Add an optional callback function pointer to the board data to be called
when checking if an interrupt has occurred and to clear it if it has.

Since the callback returns `bool`, change a few other `int` values to
`bool` to match.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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