drm/plane: drop num_overlay_planes (v3)
In order to implement plane leasing we need to count things,
just make the code consistent with the counting code currently
used for counting crtcs/encoders/connectors and drop the need
for num_overlay_planes.
v2: don't forget to assign plane_ptr. (keithp)
v3: use correct bounds check, found by igt.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c
index 6af02c7..8090e50 100644
--- a/drivers/gpu/drm/drm_plane.c
+++ b/drivers/gpu/drm/drm_plane.c
@@ -241,8 +241,6 @@ int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
list_add_tail(&plane->head, &config->plane_list);
plane->index = config->num_total_plane++;
- if (plane->type == DRM_PLANE_TYPE_OVERLAY)
- config->num_overlay_plane++;
drm_object_attach_property(&plane->base,
config->plane_type_property,
@@ -353,8 +351,6 @@ void drm_plane_cleanup(struct drm_plane *plane)
list_del(&plane->head);
dev->mode_config.num_total_plane--;
- if (plane->type == DRM_PLANE_TYPE_OVERLAY)
- dev->mode_config.num_overlay_plane--;
WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
if (plane->state && plane->funcs->atomic_destroy_state)
@@ -462,43 +458,33 @@ int drm_mode_getplane_res(struct drm_device *dev, void *data,
struct drm_mode_config *config;
struct drm_plane *plane;
uint32_t __user *plane_ptr;
- int copied = 0;
- unsigned num_planes;
+ int count = 0;
if (!drm_core_check_feature(dev, DRIVER_MODESET))
return -EINVAL;
config = &dev->mode_config;
-
- if (file_priv->universal_planes)
- num_planes = config->num_total_plane;
- else
- num_planes = config->num_overlay_plane;
+ plane_ptr = u64_to_user_ptr(plane_resp->plane_id_ptr);
/*
* This ioctl is called twice, once to determine how much space is
* needed, and the 2nd time to fill it.
*/
- if (num_planes &&
- (plane_resp->count_planes >= num_planes)) {
- plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
+ drm_for_each_plane(plane, dev) {
+ /*
+ * Unless userspace set the 'universal planes'
+ * capability bit, only advertise overlays.
+ */
+ if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
+ !file_priv->universal_planes)
+ continue;
- /* Plane lists are invariant, no locking needed. */
- drm_for_each_plane(plane, dev) {
- /*
- * Unless userspace set the 'universal planes'
- * capability bit, only advertise overlays.
- */
- if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
- !file_priv->universal_planes)
- continue;
-
- if (put_user(plane->base.id, plane_ptr + copied))
- return -EFAULT;
- copied++;
- }
+ if (count < plane_resp->count_planes &&
+ put_user(plane->base.id, plane_ptr + count))
+ return -EFAULT;
+ count++;
}
- plane_resp->count_planes = num_planes;
+ plane_resp->count_planes = count;
return 0;
}