posix-timers: Annotate lock_timer()
lock_timer() conditionally grabs it_lock in case of returning non-NULL but unlock_timer() releases it unconditionally. This leads sparse to complain about the lock context imbalance. Rename and wrap lock_timer using __cond_lock() macro to make sparse happy. Signed-off-by: NNamhyung Kim <namhyung@gmail.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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