| Message ID | 1404948131-12448-2-git-send-email-matthew.d.roper@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 6b25068..6f2729a 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -2196,6 +2196,8 @@ intel_pin_and_fence_fb_obj(struct drm_device *dev, u32 alignment; int ret; + WARN_ON(!mutex_is_locked(&dev->struct_mutex)); + switch (obj->tiling_mode) { case I915_TILING_NONE: if (IS_BROADWATER(dev) || IS_CRESTLINE(dev)) @@ -2252,6 +2254,8 @@ err_interruptible: void intel_unpin_fb_obj(struct drm_i915_gem_object *obj) { + WARN_ON(!mutex_is_locked(&obj->base.dev->struct_mutex)); + i915_gem_object_unpin_fence(obj); i915_gem_object_unpin_from_display_plane(obj); }
Add !mutex_is_locked() checks to intel_pin_and_fence_fb_obj() and intel_unpin_fb_obj() to help catch failures to grab struct_mutex when operating on fb objects. Signed-off-by: Matt Roper <matthew.d.roper@intel.com> --- drivers/gpu/drm/i915/intel_display.c | 4 ++++ 1 file changed, 4 insertions(+)