Commit e5a340f7 authored Oct 28, 2019 by Alexander Shishkin Committed by Greg Kroah-Hartman Nov 04, 2019

intel_th: msu: Fix an uninitialized mutex

Commit 615c164d ("intel_th: msu: Introduce buffer interface") added a
mutex that it forgot to initialize, resulting in a lockdep splat.

Fix that by initializing the mutex statically.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Fixes: 615c164d ("intel_th: msu: Introduce buffer interface")
Link: https://lore.kernel.org/r/20191028070651.9770-3-alexander.shishkin@linux.intel.com

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 87c0b9c7

drivers/hwtracing/intel_th/msu.c

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -164,7 +164,7 @@ struct msc {
	};		};

	static LIST_HEAD(msu_buffer_list);		static LIST_HEAD(msu_buffer_list);
	static struct mutex msu_buffer_mutex;		static DEFINE_MUTEX(msu_buffer_mutex);

	/**		/**
	* struct msu_buffer_entry - internal MSU buffer bookkeeping		* struct msu_buffer_entry - internal MSU buffer bookkeeping