Commits
Zilvinas Valinskas committed e29e175b0f4
[PATCH] initialise pi_lock if CONFIG_RT_MUTEXES=N Fixes a bogus lockdep warning which causes lockdep to disable itself. Acked-by: Ingo Molnar <mingo@elte.hu> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>