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| author |   Alexander Shishkin <alexander.shishkin@linux.intel.com> | 2019-10-28 09:06:46 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-11-04 15:01:23 +0100 |
| commit | e5a340f770278f4de42e8bac19f2ebeb77ddfae4 (patch) | |
| tree | 95ee45e307f7da8780e5d5fbf8cf68cf15bfb0a4 /drivers/hwtracing | |
| parent | intel_th: gth: Fix the window switching sequence (diff) | |
| download | linux-dev-e5a340f770278f4de42e8bac19f2ebeb77ddfae4.tar.xz linux-dev-e5a340f770278f4de42e8bac19f2ebeb77ddfae4.zip | |
intel_th: msu: Fix an uninitialized mutex
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>
Diffstat (limited to 'drivers/hwtracing')
| -rw-r--r-- | drivers/hwtracing/intel_th/msu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/hwtracing/intel_th/msu.c b/drivers/hwtracing/intel_th/msu.c index fc9f15f36ad4..51021020fa3f 100644 --- a/drivers/hwtracing/intel_th/msu.c +++ b/drivers/hwtracing/intel_th/msu.c @@ -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 |