From a50940510e94f5fb65ffd79877a60592d85598a9 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Mon, 26 Jan 2015 04:43:22 -0800 Subject: [PATCH] Revert "drm/i915: Fix mutex->owner inspection race under DEBUG_MUTEXES" The core fix was applied in commit a63b03e2d2477586440741677ecac45bcf28d7b1 Author: Chris Wilson Date: Tue Jan 6 10:29:35 2015 +0000 mutex: Always clear owner field upon mutex_unlock() (note the absence of stable@ tag) so we can now revert our band-aid commit 226e5ae9e5f910 for -next. Signed-off-by: Chris Wilson Cc: Daniel Vetter Cc: Jani Nikula Signed-off-by: Rodrigo Vivi Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_gem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 361d18b5223a..36f1093e3c63 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -5099,7 +5099,7 @@ static bool mutex_is_locked_by(struct mutex *mutex, struct task_struct *task) if (!mutex_is_locked(mutex)) return false; -#if defined(CONFIG_SMP) && !defined(CONFIG_DEBUG_MUTEXES) +#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_MUTEXES) return mutex->owner == task; #else /* Since UP may be pre-empted, we cannot assume that we own the lock */ -- 2.20.1