From 8da8c86f52e5487adfa2e3bae4d539e46f2714dd Mon Sep 17 00:00:00 2001
From: Ian Abbott <abbotti@mev.co.uk>
Date: Fri, 8 Nov 2013 15:03:27 +0000
Subject: [PATCH] staging: comedi: wake up async waiters when become non-busy

Wake up all waiters on the comedi subdevice's async wait queue whenever
the subdevice is marked "non-busy".  This happens when an asynchronous
command is cancelled or when a command is terminated and all data has
been read or written.  Note: use `wake_up_interruptible_all()` as we
only use interruptible waits.

Remove the call to `wake_up_interruptible()` from `do_cancel_ioctl()` as
it will call `wake_up_interruptible_all()` indirectly via `do_cancel()`
and `do_become_nonbusy()`.

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