The kref_put_mutex() returns with the mutex held after freeing the
object - so we must remember to drop it...
Fixes: 69df05e11ab8 ("drm/i915: Simplify releasing context reference")
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_drv.h | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index ff58583ea757..68b8bf16de57 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -3519,9 +3519,10 @@ static inline void i915_gem_context_put(struct i915_gem_context *ctx)
static inline void i915_gem_context_put_unlocked(struct i915_gem_context *ctx)
{
- kref_put_mutex(&ctx->ref,
- i915_gem_context_free,
- &ctx->i915->drm.struct_mutex);
+ struct mutex *lock = &ctx->i915->drm.struct_mutex;
+
+ if (kref_put_mutex(&ctx->ref, i915_gem_context_free, lock))
+ mutex_unlock(lock);
}
static inline struct intel_timeline *
--
2.11.0
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