drm: Clarify the role of plane_state argument to drm_simple update().
Like the atomic update hook it's wrapping, the plane_state is the old
one, and the new one is in plane->state. Both msxfb and tinydrm use
it correctly, but I mistook it for the new state in pl111 due to its
naming.
Signed-off-by: Eric Anholt <eric@anholt.net>
Link: http://patchwork.freedesktop.org/patch/msgid/20170320233615.5242-3-eric@anholt.net
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/drm_simple_kms_helper.c b/drivers/gpu/drm/drm_simple_kms_helper.c
index 16789fa..e084f9f 100644
--- a/drivers/gpu/drm/drm_simple_kms_helper.c
+++ b/drivers/gpu/drm/drm_simple_kms_helper.c
@@ -114,7 +114,7 @@ static int drm_simple_kms_plane_atomic_check(struct drm_plane *plane,
}
static void drm_simple_kms_plane_atomic_update(struct drm_plane *plane,
- struct drm_plane_state *pstate)
+ struct drm_plane_state *old_pstate)
{
struct drm_simple_display_pipe *pipe;
@@ -122,7 +122,7 @@ static void drm_simple_kms_plane_atomic_update(struct drm_plane *plane,
if (!pipe->funcs || !pipe->funcs->update)
return;
- pipe->funcs->update(pipe, pstate);
+ pipe->funcs->update(pipe, old_pstate);
}
static int drm_simple_kms_plane_prepare_fb(struct drm_plane *plane,
