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drm/shmem-helper: Pass GEM shmem object in public interfaces

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Change all GEM SHMEM object functions that receive a GEM object
of type struct drm_gem_object to expect an object of type
struct drm_gem_shmem_object instead.

This change reduces the number of upcasts from struct drm_gem_object
by moving them into callers. The C compiler can now verify that the
GEM SHMEM functions are called with the correct type.

For consistency, the patch also renames drm_gem_shmem_free_object to
drm_gem_shmem_free. It further updates documentation for a number of
functions.

v3:
	* fix docs for drm_gem_shmem_object_free()
v2:
	* mention _object_ callbacks in docs (Daniel)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20211108093149.7226-4-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann
2021-11-08 10:31:49 +01:00
parent c7fbcb7149
commit a193f3b4e0
11 changed files with 107 additions and 102 deletions
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8
drivers/gpu/drm/v3d/v3d_bo.c
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@@ -47,7 +47,7 @@ void v3d_free_object(struct drm_gem_object *obj)
/* GPU execution may have dirtied any pages in the BO. */
bo->base.pages_mark_dirty_on_put = true;
drm_gem_shmem_free_object(obj);
drm_gem_shmem_free(&bo->base);
}
static const struct drm_gem_object_funcs v3d_gem_funcs = {
@@ -95,7 +95,7 @@ v3d_bo_create_finish(struct drm_gem_object *obj)
/* So far we pin the BO in the MMU for its lifetime, so use
* shmem's helper for getting a lifetime sgt.
*/
sgt = drm_gem_shmem_get_pages_sgt(&bo->base.base);
sgt = drm_gem_shmem_get_pages_sgt(&bo->base);
if (IS_ERR(sgt))
return PTR_ERR(sgt);
@@ -141,7 +141,7 @@ struct v3d_bo *v3d_bo_create(struct drm_device *dev, struct drm_file *file_priv,
return bo;
free_obj:
drm_gem_shmem_free_object(&shmem_obj->base);
drm_gem_shmem_free(shmem_obj);
return ERR_PTR(ret);
}
@@ -159,7 +159,7 @@ v3d_prime_import_sg_table(struct drm_device *dev,
ret = v3d_bo_create_finish(obj);
if (ret) {
drm_gem_shmem_free_object(obj);
drm_gem_shmem_free(&to_v3d_bo(obj)->base);
return ERR_PTR(ret);
}