drm/tegra: Use drm_gem_object_unreference_unlocked()
This only grabs the mutex when really needed, but still has a might-
acquire lockdep check to make sure that's always possible. With this
patch Tegra DRM is officially struct_mutex free, yay!
v2: refernce_unlocked doesn't exist as kbuild spotted.
Cc: Thierry Reding <thierry.reding@gmail.com>
Acked-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
[treding@nvidia.com: remove unused variables]
Signed-off-by: Thierry Reding <treding@nvidia.com>
diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c
index b26f62e..c4910d5 100644
--- a/drivers/gpu/drm/tegra/drm.c
+++ b/drivers/gpu/drm/tegra/drm.c
@@ -277,9 +277,7 @@
if (!gem)
return NULL;
- mutex_lock(&drm->struct_mutex);
- drm_gem_object_unreference(gem);
- mutex_unlock(&drm->struct_mutex);
+ drm_gem_object_unreference_unlocked(gem);
bo = to_tegra_bo(gem);
return &bo->base;