Re: [PATCH] drm: rcar-du: Replace drm_driver GEM ops with GEM object functions

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Den 18.06.2019 15.13, skrev Laurent Pinchart:
> The recommended way to specify GEM object functions is to provide a
> drm_gem_object_funcs structure instance and set the GEM object to point
> to it. The drm_cma_gem_create_object_default_funcs() function provided
> by the GEM CMA helper does so when creating the GEM object, simplifying
> the driver implementation. Switch to it, and remove the then unneeded
> GEM-related opertions from rcar_du_driver.

s/opertions/operations/

> 
> Suggested-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
> ---
>  drivers/gpu/drm/rcar-du/rcar_du_drv.c | 8 +-------
>  1 file changed, 1 insertion(+), 7 deletions(-)
> 
> Daniel, is this what you had in mind ?
> 
> diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
> index 3e5e835ea2b6..4cbb82009931 100644
> --- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
> +++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
> @@ -445,16 +445,10 @@ DEFINE_DRM_GEM_CMA_FOPS(rcar_du_fops);
>  static struct drm_driver rcar_du_driver = {
>  	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME
>  				| DRIVER_ATOMIC,
> -	.gem_free_object_unlocked = drm_gem_cma_free_object,
> -	.gem_vm_ops		= &drm_gem_cma_vm_ops,
> +	.gem_create_object      = drm_cma_gem_create_object_default_funcs,
>  	.prime_handle_to_fd	= drm_gem_prime_handle_to_fd,
>  	.prime_fd_to_handle	= drm_gem_prime_fd_to_handle,
> -	.gem_prime_import	= drm_gem_prime_import,
> -	.gem_prime_export	= drm_gem_prime_export,
> -	.gem_prime_get_sg_table	= drm_gem_cma_prime_get_sg_table,
>  	.gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
> -	.gem_prime_vmap		= drm_gem_cma_prime_vmap,
> -	.gem_prime_vunmap	= drm_gem_cma_prime_vunmap,
>  	.gem_prime_mmap		= drm_gem_cma_prime_mmap,

If you want to pick up yet another recommendation, you can use
drm_gem_prime_mmap here.

Either way:

Reviewed-by: Noralf Trønnes <noralf@xxxxxxxxxxx>

>  	.dumb_create		= rcar_du_dumb_create,
>  	.fops			= &rcar_du_fops,
> 
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