From 2fa190ce33bdf2f58bb0a65d94e08980d92c76ed Mon Sep 17 00:00:00 2001
From: Kevin Strasser <kevin.strasser@intel.com>
Date: Mon, 19 May 2014 11:14:23 +0300
Subject: [PATCH] ASoC: Intel: Fix pcm stream context restore crash

In some cases the pcm stream is closed while context has been
scheduled to be restored, causing a null pointer deref panic.
Cancel work to ensure stream does not get freed while work is
still active/pending.

Also, restoring the pcm context can be safely skipped after the
stream has been stopped. Check if pcm stream is still running
before restoring stream context to help pending work finish
more quickly in stream close path.

Signed-off-by: Kevin Strasser <kevin.strasser@intel.com>
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
---
Reading git-format-patch failed