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Diffstat (limited to 'drivers/gpu/drm/drm_gem_atomic_helper.c')
-rw-r--r--drivers/gpu/drm/drm_gem_atomic_helper.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_gem_atomic_helper.c b/drivers/gpu/drm/drm_gem_atomic_helper.c
index a27135084ae5..bc9396f2a0ed 100644
--- a/drivers/gpu/drm/drm_gem_atomic_helper.c
+++ b/drivers/gpu/drm/drm_gem_atomic_helper.c
@@ -135,6 +135,9 @@
* GEM based framebuffer drivers which have their buffers always pinned in
* memory.
*
+ * This function is the default implementation for GEM drivers of
+ * &drm_plane_helper_funcs.prepare_fb if no callback is provided.
+ *
* See drm_atomic_set_fence_for_plane() for a discussion of implicit and
* explicit fencing in atomic modeset updates.
*/