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drm/vc4: Use drm_gem_cma_vmap() directly 

Validated shaders cannot be exported. There's no need for testing this in
the BO's vmap implementation. Call drm_gem_cma_vmap() directly instead.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210108140808.25775-2-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2021-01-08 15:08:06 +01:00
parent 0cf1d70404
commit b100ed1ee8
2 changed files with 1 additions and 14 deletions
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14
drivers/gpu/drm/vc4/vc4_bo.c
View File

@ -386,7 +386,7 @@ static const struct drm_gem_object_funcs vc4_gem_object_funcs = {
.free = vc4_free_object,
.export = vc4_prime_export,
.get_sg_table = drm_gem_cma_get_sg_table,
.vmap = vc4_prime_vmap,
.vmap = drm_gem_cma_vmap,
.vm_ops = &vc4_vm_ops,
};
@ -785,18 +785,6 @@ int vc4_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma)
return drm_gem_prime_mmap(obj, vma);
}
int vc4_prime_vmap(struct drm_gem_object *obj, struct dma_buf_map *map)
{
struct vc4_bo *bo = to_vc4_bo(obj);
if (bo->validated_shader) {
DRM_DEBUG("mmaping of shader BOs not allowed.\n");
return -EINVAL;
}
return drm_gem_cma_vmap(obj, map);
}
struct drm_gem_object *
vc4_prime_import_sg_table(struct drm_device *dev,
struct dma_buf_attachment *attach,

1
drivers/gpu/drm/vc4/vc4_drv.h
View File

@ -808,7 +808,6 @@ int vc4_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma);
struct drm_gem_object *vc4_prime_import_sg_table(struct drm_device *dev,
struct dma_buf_attachment *attach,
struct sg_table *sgt);
int vc4_prime_vmap(struct drm_gem_object *obj, struct dma_buf_map *map);
int vc4_bo_cache_init(struct drm_device *dev);
int vc4_bo_inc_usecnt(struct vc4_bo *bo);
void vc4_bo_dec_usecnt(struct vc4_bo *bo);