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intel_th: msu: Fix an uninitialized mutex

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Commit 615c164da0eb ("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: 615c164da0eb ("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>
This commit is contained in:
Alexander Shishkin 2019-10-28 09:06:46 +02:00 committed by Greg Kroah-Hartman
parent 87c0b9c79e
commit e5a340f770
1 changed files with 1 additions and 1 deletions
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2
drivers/hwtracing/intel_th/msu.c
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@ -164,7 +164,7 @@ struct msc {
};
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