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drm: Store new plane state in a variable for atomic_update and disable

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In order to store the new plane state in a subsequent helper, let's move
the plane->state dereferences into a variable.

This was done using the following coccinelle script, plus some hand
changes for vmwgfx:

@ plane_atomic_func @
identifier helpers;
identifier func;
@@

(
 static const struct drm_plane_helper_funcs helpers = {
 	...,
 	.atomic_disable = func,
	...,
 };
|
 static const struct drm_plane_helper_funcs helpers = {
 	...,
 	.atomic_update = func,
	...,
 };
)

@ has_new_state_old_state @
identifier plane_atomic_func.func;
identifier plane;
identifier new_state;
symbol old_state;
@@

 func(struct drm_plane *plane, struct drm_plane_state *old_state)
 {
 	...
 	struct drm_plane_state *new_state = plane->state;
	...
 }

@ depends on !has_new_state_old_state @
identifier plane_atomic_func.func;
identifier plane;
symbol old_state;
@@

 func(struct drm_plane *plane, struct drm_plane_state *old_state)
 {
+	struct drm_plane_state *new_state = plane->state;
 	<+...
-	plane->state
+	new_state
	...+>
 }

@ has_new_state_state @
identifier plane_atomic_func.func;
identifier plane;
identifier new_state;
symbol state;
@@

 func(struct drm_plane *plane, struct drm_plane_state *state)
 {
 	...
 	struct drm_plane_state *new_state = plane->state;
	...
 }

@ depends on !has_new_state_state @
identifier plane_atomic_func.func;
identifier plane;
symbol state;
@@

 func(struct drm_plane *plane, struct drm_plane_state *state)
 {
+	struct drm_plane_state *new_plane_state = plane->state;
 	<+...
-	plane->state
+	new_plane_state
	...+>
 }

@ has_new_state_old_s @
identifier plane_atomic_func.func;
identifier plane;
identifier new_state;
symbol old_s;
@@

 func(struct drm_plane *plane, struct drm_plane_state *old_s)
 {
 	...
 	struct drm_plane_state *new_state = plane->state;
	...
 }

@ depends on !has_new_state_old_s @
identifier plane_atomic_func.func;
identifier plane;
symbol old_s;
@@

 func(struct drm_plane *plane, struct drm_plane_state *old_s)
 {
+	struct drm_plane_state *new_s = plane->state;
 	<+...
-	plane->state
+	new_s
	...+>
 }

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://lore.kernel.org/r/20210219120032.260676-1-maxime@cerno.tech
This commit is contained in:
Maxime Ripard
2021-02-19 13:00:27 +01:00
parent 0b6aaf9d76
commit e05162c017
22 changed files with 151 additions and 126 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
View File

@@ -1582,8 +1582,9 @@ static void
vmw_stdu_primary_plane_atomic_update(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct vmw_plane_state *vps = vmw_plane_state_to_vps(plane->state);
struct drm_crtc *crtc = plane->state->crtc;
struct drm_plane_state *new_state = plane->state;
struct vmw_plane_state *vps = vmw_plane_state_to_vps(new_state);
struct drm_crtc *crtc = new_state->crtc;
struct vmw_screen_target_display_unit *stdu;
struct drm_pending_vblank_event *event;
struct vmw_fence_obj *fence = NULL;
@@ -1591,9 +1592,9 @@ vmw_stdu_primary_plane_atomic_update(struct drm_plane *plane,
int ret;
/* If case of device error, maintain consistent atomic state */
if (crtc && plane->state->fb) {
if (crtc && new_state->fb) {
struct vmw_framebuffer *vfb =
vmw_framebuffer_to_vfb(plane->state->fb);
vmw_framebuffer_to_vfb(new_state->fb);
stdu = vmw_crtc_to_stdu(crtc);
dev_priv = vmw_priv(crtc->dev);